https://nuclear.unh.edu/wiki/api.php?action=feedcontributions&user=Nathaly&feedformat=atomNuclear Physics Group Documentation Pages - User contributions [en]2024-03-29T07:57:58ZUser contributionsMediaWiki 1.35.0https://nuclear.unh.edu/wiki/index.php?title=Monitor_Vacuum_System&diff=6487Monitor Vacuum System2020-06-11T16:44:25Z<p>Nathaly: </p>
<hr />
<div>Previous page: [[Shift Workers Documentation]]<br />
<br />
In the system we have two reservoirs that we are constantly pumping, the Shells and the Fridge. The Shells is a high vacuum system and the Fridge is a 4He evaporation system operated at 1K. The pressures range expected for each apparatus are summarized in the following table. <br />
<br />
{| class="wikitable"<br />
|-<br />
! Apparatus<br />
! Pressure (Torr)<br />
|-<br />
| Shells<br />
| 10<sup>-6</sup> - 10 <sup>-7</sup><br />
|-<br />
| Fridge<br />
| ~0.1 @ 1K Pressure depends on Helium4 Temperature. See Figure.<br />
|}<br />
<br />
In principle, the pressures should be stable during the cool-down but possible problems may occur and the indications of an issue are different for the shells and fridge. In the next subsections, the possible problems will be summarized along with the actions to be taken in case of a problem.<br />
<br />
'''Shells'''<br />
<br />
Shells pressure is obtained and maintained by a turbo pump. Keeping low pressure in the chamber is vital for the isolation of the 4K and 1K Helium of the magnet and fridge respectively. The pressure is monitored by a Ionivac ITR-090 and is recorded in the main vi. Monitoring the shells pressure over the course of the cool-down is vital to get leaks before they are unstoppable. Please monitor the pressure regularly and log any unexpected behavior. Here is a list of situations that you may encounter during the cool-down:<br />
<br />
i. Shells pressure decreases as fridge temperature decreases: This effect is caused by the cryogenic cooling generated by the nose of the Fridge. It is normal, and it is expected that when the Fridge achieves the lowest temperature, the shells will get the minimum pressure during the cool-down. <br />
<br />
ii. Sudden spike above 10<sup>-4</sup>Torr. This may be a symptom of a leak and here is a list of the possible causes:<br />
*Abruptly drop in the Fridge temperature. Check the temperature of the CCS located in the shells. If the temperature changes by more than 50 degrees in less than 5 minutes the sudden cooling of the fridge may be creating an abrupt gradient of temperature in the teflon o-ring and it generates a leak. Follow the next steps:<br />
*#Close the needle valves and the roots if the are operating, only keep the roughing pumps, and wait until the pressure is recovered below 10<sup>-5</sup>Torr. <br />
*#Then, slightly open the heat exchanger valve and observe for a couple of minutes the behavior of the Pressure. Adjust the needle valve to a place you find that the cooling of the Fridge is constant and slow.<br />
*#When the temperature of the CCS in the shells reaches the temperature of the failure, proceed to normal operation of the pumps. But, continue monitoring closely in case you need to turn them off again.<br />
<br />
*Loose pressure in the lambda point of Helium4. The lambda point of Helium4 is shown in Figure X. If the pressure of the shells is lost when the Fridge approaches the lambda point of Helium4, the presence of a cold leak in the shells is highly probable. Follow the next steps: <br />
*#Turn off the roots (in case they are on).<br />
*#Close the gate valve and needle valves. Monitor if the pressure of the shells is recovered when the Fridge exits the lambda point.<br />
*#Open the Gate valve slightly and monitor the shells while they approach the lambda point. In case the event repeats, close the gate valve and repeat again, the steps above. If the temperature in the Fridge continues increasing, it means that you possibly lost all the Helium4 in the Fridge. Therefore, open slightly(how much?) the needle valves. <br />
*#If you confirm the presence of a cold leak the physics goals of the cool-down may change and you need to consult your shift leader. While she/he redirect the course of the cool-down, don’t allow the Fridge to warm. Therefore, the steps of opening and closing the gate valve/needle valves need to be repeated constantly until the goals of the cool-down are reset.<br />
<br />
*Roughing pump failed: If there is an abrupt oil spill of the pump and/or it does not restart. Solution: Replace the pump with a spare roughing pump. <br />
<br />
*Turbo Pump failed: If the pressure goes abruptly above 10-3Torr the Turbo will shut-off automatically by its safety system. And, failure of the pump may not be very obvious , but if the shell's pressure was stable as well as the temperature along the different temperature sensors of the Fridge (Check all the temperatures of the fridge during the past ~20 minutes of the event), a turbo pump failure may be the cause. If the pressure is maintained of the order of 80 mTorr or below by the roughing pump attempt to restart the turbo pump and see if the temperature decreases to at least 10-5Torr in a couple of minutes. If it does, the turbo pump may be OK and monitor all the other systems to find the cause and/or prevent a repetition of the event. But, if it does not restart, please change the turbo with a spare.<br />
<br />
[[File:Lambda.png|600px]] <br />
<br />
'''Fridge'''<br />
<br />
The Fridge pressure is related with the temperature of the nose when the temperature is below 4K, as shown in Figure X. It is very difficult to detect Fridge leaks during normal operation of the Fridge but here is a list of things you need to check regularly during the cool-down:<br />
<br />
*During/After a target swap: Make sure the o-rings of the Piston are adequate. Be careful in the insert/extract of the target stick. If the o-rings are compromised after the extraction of the sticks, change them by new ones. Piston o-rings can be found in the red buckets on the wall near to the roots. <br />
*Moving the microwaves/target stick: Since the mechanism for moving the microwaves/target stick changes the sealing that keep vacuum on the Fridge. Always make sure that you do those slow and careful. The rule to follow is that after any movement, the fridge should return to its operation status. Therefore do changes one by one and wait until the Fridge recovers to its previous state to make any other change. <br />
<br />
'''Never let the Fridge go above 30K. Always check that all the pressure systems (Fridge and Magnet) have pop-off valves and they are unfrozen and working to avoid any possible over-pressure (Creating a bomb).'''</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:Lambda.png&diff=6485File:Lambda.png2020-06-11T16:40:20Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Monitor_flow_meters&diff=6464Monitor flow meters2020-06-11T03:38:51Z<p>Nathaly: Created page with "Previous page: Shift Workers Documentation There are 3 flow meters in the system. 1) At the end of the roots roughing pump, 2) after the separator and 3) In the magnet s..."</p>
<hr />
<div>Previous page: [[Shift Workers Documentation]]<br />
<br />
There are 3 flow meters in the system. 1) At the end of the roots roughing pump, 2) after the separator and 3) In the magnet space. The function of the flow meters is to monitor the Helium output/consumption. The typical values expected in the flow meters are summarized in the Table. <br />
<br />
Monitoring the flow meter is checking the fluctuations of the flow meter values is important in order to check how the system is operating. Here are some situations that you may encounter in the shift.<br />
<br />
*Flow meter reading is 0. That means that the Helium flow stopped in the flow meter. It could be due to a part of the line frozen/blocked / the needles valves are closed / among others. If that is the case, please check that the system is not over pressuring, if it is: Stop the helium flow and fix the problem. If the system is not over pressuring check the status of all parts of the system and find the problem.<br />
*Flow meter is above/below the expected value. In this case, something in the system must have changed. If it is due to target/microwaves/other recent change of the system, wait until the system reaches equilibrium again. If it is not due to changes to the system or if the variation continues, check all the parameters that can alter the flow (leaks, needle valve wide open, ice in the lines, among others), and fix it.</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6463Shift Workers Documentation2020-06-11T03:33:00Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|[[Monitor NMR data and check data output]]<br />
|David<br />
|-<br />
|[[Ramp up and down the magnet]]<br />
|Google Doc/David <br />
|-<br />
|[[Monitor and operate the microwaves / know how to find correct frequency]]<br />
|Ellie/David<br />
|-<br />
|[[VNA/VME swaps and calibrations]]<br />
|Ellie/David<br />
|-<br />
|[[Setup system for changes in the polarization parameters (B, T, NMR, target…) Physics Documentation]]<br />
|Karl<br />
|-<br />
|[[Log and report changes in the system]]<br />
|Nathaly<br />
|-<br />
|[[Monitor Vacuum System]]<br />
|Nathaly<br />
|-<br />
|[[Monitor flow meters]]<br />
|Nathaly<br />
|-<br />
|[[Monitor/Operating needle valves]]<br />
|Google Doc/Michael<br />
|-<br />
|[[Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge]]<br />
|Karl<br />
|-<br />
|[[Heat Straps monitor / External heater of the separator line]]<br />
|Ellie/Nathaly<br />
|-<br />
|[[Monitor LHe level in the Magnet and call for fillings]]<br />
|Google Doc<br />
|-<br />
|[[Monitor LHe in the Fridge and adjust them if needed]]<br />
|Future Work<br />
|-<br />
|[[Magnet refills.]]<br />
|Google Doc<br />
|-<br />
|[[Target swaps]]<br />
|Karl<br />
|-<br />
|[[Repair NMR cable]]<br />
|Marie<br />
|-<br />
|[[Calculation of LHe to vapor to convert to flowmeter reading]]<br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
'''Future Discussion:'''<br />
<br />
Define Shift Leader and target operators tasks and names<br />
<br />
Shift Checklist: Physical (What should be included?)<br />
<br />
Shift Summary: At the end of the shift in the Logbook (What should be included?)<br />
<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Monitor_Vacuum_System&diff=6462Monitor Vacuum System2020-06-11T03:20:15Z<p>Nathaly: Created page with "Previous page: Shift Workers Documentation In the system we have two reservoirs that we are constantly pumping, the Shells and the Fridge. The Shells is a high vacuum sys..."</p>
<hr />
<div>Previous page: [[Shift Workers Documentation]]<br />
<br />
In the system we have two reservoirs that we are constantly pumping, the Shells and the Fridge. The Shells is a high vacuum system and the Fridge is a 4He evaporation system operated at 1K. The pressures range expected for each apparatus are summarized in the following table. <br />
<br />
{| class="wikitable"<br />
|-<br />
! Apparatus<br />
! Pressure (Torr)<br />
|-<br />
| Shells<br />
| 10<sup>-6</sup> - 10 <sup>-7</sup><br />
|-<br />
| Fridge<br />
| ~0.1 @ 1K Pressure depends on Helium4 Temperature. See Figure.<br />
|}<br />
<br />
In principle, the pressures should be stable during the cool-down but possible problems may occur and the indications of an issue are different for the shells and fridge. In the next subsections, the possible problems will be summarized along with the actions to be taken in case of a problem.<br />
<br />
'''Shells'''<br />
<br />
Shells pressure is obtained and maintained by a turbo pump. Keeping low pressure in the chamber is vital for the isolation of the 4K and 1K Helium of the magnet and fridge respectively. The pressure is monitored by a Ionivac ITR-090 and is recorded in the main vi. Monitoring the shells pressure over the course of the cool-down is vital to get leaks before they are unstoppable. Please monitor the pressure regularly and log any unexpected behavior. Here is a list of situations that you may encounter during the cool-down:<br />
<br />
i. Shells pressure decreases as fridge temperature decreases: This effect is caused by the cryogenic cooling generated by the nose of the Fridge. It is normal, and it is expected that when the Fridge achieves the lowest temperature, the shells will get the minimum pressure during the cool-down. <br />
<br />
ii. Sudden spike above 10<sup>-4</sup>Torr. This may be a symptom of a leak and here is a list of the possible causes:<br />
*Abruptly drop in the Fridge temperature. Check the temperature of the CCS located in the shells. If the temperature changes by more than 50 degrees in less than 5 minutes the sudden cooling of the fridge may be creating an abrupt gradient of temperature in the teflon o-ring and it generates a leak. Follow the next steps:<br />
*#Close the needle valves and the roots if the are operating, only keep the roughing pumps, and wait until the pressure is recovered below 10<sup>-5</sup>Torr. <br />
*#Then, slightly open the heat exchanger valve and observe for a couple of minutes the behavior of the Pressure. Adjust the needle valve to a place you find that the cooling of the Fridge is constant and slow.<br />
*#When the temperature of the CCS in the shells reaches the temperature of the failure, proceed to normal operation of the pumps. But, continue monitoring closely in case you need to turn them off again.<br />
<br />
*Loose pressure in the lambda point of Helium4. The lambda point of Helium4 is shown in Figure X. If the pressure of the shells is lost when the Fridge approaches the lambda point of Helium4, the presence of a cold leak in the shells is highly probable. Follow the next steps: <br />
*#Turn off the roots (in case they are on).<br />
*#Close the gate valve and needle valves. Monitor if the pressure of the shells is recovered when the Fridge exits the lambda point.<br />
*#Open the Gate valve slightly and monitor the shells while they approach the lambda point. In case the event repeats, close the gate valve and repeat again, the steps above. If the temperature in the Fridge continues increasing, it means that you possibly lost all the Helium4 in the Fridge. Therefore, open slightly(how much?) the needle valves. <br />
*#If you confirm the presence of a cold leak the physics goals of the cool-down may change and you need to consult your shift leader. While she/he redirect the course of the cool-down, don’t allow the Fridge to warm. Therefore, the steps of opening and closing the gate valve/needle valves need to be repeated constantly until the goals of the cool-down are reset.<br />
<br />
*Roughing pump failed: If there is an abrupt oil spill of the pump and/or it does not restart. Solution: Replace the pump with a spare roughing pump. <br />
<br />
*Turbo Pump failed: If the pressure goes abruptly above 10-3Torr the Turbo will shut-off automatically by its safety system. And, failure of the pump may not be very obvious , but if the shell's pressure was stable as well as the temperature along the different temperature sensors of the Fridge (Check all the temperatures of the fridge during the past ~20 minutes of the event), a turbo pump failure may be the cause. If the pressure is maintained of the order of 80 mTorr or below by the roughing pump attempt to restart the turbo pump and see if the temperature decreases to at least 10-5Torr in a couple of minutes. If it does, the turbo pump may be OK and monitor all the other systems to find the cause and/or prevent a repetition of the event. But, if it does not restart, please change the turbo with a spare.<br />
<br />
'''Fridge'''<br />
<br />
The Fridge pressure is related with the temperature of the nose when the temperature is below 4K, as shown in Figure X. It is very difficult to detect Fridge leaks during normal operation of the Fridge but here is a list of things you need to check regularly during the cool-down:<br />
<br />
*During/After a target swap: Make sure the o-rings of the Piston are adequate. Be careful in the insert/extract of the target stick. If the o-rings are compromised after the extraction of the sticks, change them by new ones. Piston o-rings can be found in the red buckets on the wall near to the roots. <br />
*Moving the microwaves/target stick: Since the mechanism for moving the microwaves/target stick changes the sealing that keep vacuum on the Fridge. Always make sure that you do those slow and careful. The rule to follow is that after any movement, the fridge should return to its operation status. Therefore do changes one by one and wait until the Fridge recovers to its previous state to make any other change. <br />
<br />
'''Never let the Fridge go above 30K. Always check that all the pressure systems (Fridge and Magnet) have pop-off valves and they are unfrozen and working to avoid any possible over-pressure (Creating a bomb).'''</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6461Shift Workers Documentation2020-06-11T03:00:24Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|[[Monitor NMR data and check data output]]<br />
|David<br />
|-<br />
|[[Ramp up and down the magnet]]<br />
|Google Doc/David <br />
|-<br />
|[[Monitor and operate the microwaves / know how to find correct frequency]]<br />
|Ellie/David<br />
|-<br />
|[[VNA/VME swaps and calibrations]]<br />
|Ellie/David<br />
|-<br />
|[[Setup system for changes in the polarization parameters (B, T, NMR, target…) Physics Documentation]]<br />
|Karl<br />
|-<br />
|[[Log and report changes in the system]]<br />
|Nathaly<br />
|-<br />
|[[Monitor Vacuum System]]<br />
|Nathaly<br />
|-<br />
|[[Monitor flowmeters]]<br />
|Nathaly<br />
|-<br />
|[[Monitor/Operating needle valves]]<br />
|Google Doc/Michael<br />
|-<br />
|[[Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge]]<br />
|Karl<br />
|-<br />
|[[Heat Straps monitor / External heater of the separator line]]<br />
|Ellie/Nathaly<br />
|-<br />
|[[Monitor LHe level in the Magnet and call for fillings]]<br />
|Google Doc<br />
|-<br />
|[[Monitor LHe in the Fridge and adjust them if needed]]<br />
|Future Work<br />
|-<br />
|[[Magnet refills.]]<br />
|Google Doc<br />
|-<br />
|[[Target swaps]]<br />
|Karl<br />
|-<br />
|[[Repair NMR cable]]<br />
|Marie<br />
|-<br />
|[[Calculation of LHe to vapor to convert to flowmeter reading]]<br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
'''Future Discussion:'''<br />
<br />
Define Shift Leader and target operators tasks and names<br />
<br />
Shift Checklist: Physical (What should be included?)<br />
<br />
Shift Summary: At the end of the shift in the Logbook (What should be included?)<br />
<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6460Shift Workers Documentation2020-06-11T02:59:01Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|[[Monitor NMR data and check data output]]<br />
|David<br />
|-<br />
|[[Ramp up and down the magnet]]<br />
|Google Doc/David <br />
|-<br />
|[[Monitor and operate the microwaves / know how to find correct frequency]]<br />
|Ellie/David<br />
|-<br />
|[[VNA/VME swaps and calibrations]]<br />
|Ellie/David<br />
|-<br />
|[[Setup system for changes in the polarization parameters (B, T, NMR, target…) Physics Documentation]]<br />
|Karl<br />
|-<br />
|[[Log and report changes in the system]]<br />
|Nathaly<br />
|-<br />
|[[Monitor vacuum System]]<br />
|Nathaly<br />
|-<br />
|[[Monitor flowmeters]]<br />
|Nathaly<br />
|-<br />
|[[Monitor/Operating needle valves]]<br />
|Google Doc/Michael<br />
|-<br />
|[[Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge]]<br />
|Karl<br />
|-<br />
|[[Heat Straps monitor / External heater of the separator line]]<br />
|Ellie/Nathaly<br />
|-<br />
|[[Monitor LHe level in the Magnet and call for fillings]]<br />
|Google Doc<br />
|-<br />
|[[Monitor LHe in the Fridge and adjust them if needed]]<br />
|Future Work<br />
|-<br />
|[[Magnet refills.]]<br />
|Google Doc<br />
|-<br />
|[[Target swaps]]<br />
|Karl<br />
|-<br />
|[[Repair NMR cable]]<br />
|Marie<br />
|-<br />
|[[Calculation of LHe to vapor to convert to flowmeter reading]]<br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
'''Future Discussion:'''<br />
<br />
Define Shift Leader and target operators tasks and names<br />
<br />
Shift Checklist: Physical (What should be included?)<br />
<br />
Shift Summary: At the end of the shift in the Logbook (What should be included?)<br />
<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Monitor_vacuum_pumps_and_change_or_replace_a_pump_if_needed&diff=6459Monitor vacuum pumps and change or replace a pump if needed2020-06-11T02:57:26Z<p>Nathaly: </p>
<hr />
<div>Previous page: [[Shift Workers Documentation]]<br />
<br />
In the system we have two reservoirs that we are constantly pumping, the Shells and the Fridge. The Shells is a high vacuum system and the Fridge is a 4He evaporation system operated at 1K. The pressures range expected for each apparatus are summarized in the following table. <br />
<br />
{| class="wikitable"<br />
|-<br />
! Apparatus<br />
! Pressure (Torr)<br />
|-<br />
| Shells<br />
| 10e-6 - 10e-7<br />
|-<br />
| Fridge<br />
| ~0.1 @ 1K<br />
Pressure depends on Helium4 Temperature. See the Figure.<br />
|}<br />
<br />
'''Shells'''<br />
<br />
Shells pressure is obtained and maintained by a turbo pump. Keeping low pressure in the chamber is vital for the isolation of the 4K and 1K Helium of the magnet and fridge respectively. The pressure is monitored by a Ionivac ITR-090 and is recorded in the main vi. Monitoring the shells pressure over the course of the cool-down is vital to get leaks before they are unstoppable. Please monitor the pressure regularly and log any unexpected behavior. Here is a list of situations that you may encounter during the cool-down:<br />
<br />
i. Shells pressure decreases as fridge temperature decreases: This effect is caused by the cryogenic cooling generated by the nose of the Fridge. It is normal, and it is expected that when the Fridge achieves the lowest temperature, the shells will get the minimum pressure during the cool-down. <br />
<br />
ii. Sudden spike above 10-4Torr. This may be a symptom of a leak and here is a list of the possible causes:<br />
<br />
*Abruptly drop in the Fridge temperature. Check the temperature of the CCS located in the shells. If the temperature changes by more than 50 degrees in less than 5 minutes the sudden cooling of the fridge may be creating an abrupt gradient of temperature in the teflon o-ring and it generates a leak. Follow the next steps:<br />
*#Close the needle valves and the roots if the are operating, only keep the roughing pumps, and wait until the pressure is recovered below 10<sup>-5</sup> Torr.<br />
*#Then, slightly open the heat exchanger valve and observe for a couple of minutes the behavior of the Pressure. Adjust the needle valve to a place you find that the cooling of the Fridge is constant and slow.<br />
*#When the temperature of the CCS in the shells reaches the temperature of the failure, proceed to normal operation of the pumps. But, continue monitoring closely in case you need to turn them off again.<br />
<br />
*Loose pressure in the lambda point of Helium4. The lambda point of Helium4 is shown in Figure. If the pressure of the shells is lost when the Fridge approaches the lambda point of Helium4, the presence of a cold leak in the shells is highly probable. Follow the next steps: <br />
*#Turn off the roots (in case they are on).<br />
*#Close the gate valve and needle valves. Monitor if the pressure of the shells is recovered when the Fridge exits the lambda point.<br />
*#Open the Gate valve slightly and monitor the shells while they approach the lambda point. In case the event repeats, close the gate valve and repeat again, the steps above. If the temperature in the Fridge continues increasing, it means that you possibly lost all the Helium4 in the Fridge. Therefore, open slightly the needle valves. <br />
*#If you confirm the presence of a cold leak the physics goals of the cool-down may change and you need to consult your shift leader. While she/he redirect the course of the cool-down, don’t allow the Fridge to warm. Therefore, the steps of opening and closing the gate valve/needle valves need to be repeated constantly until the goals of the cool-down are reset. <br />
<br />
*Roughing pump failed: If there is an abrupt oil spill of the pump and/or it does not restart. Solution: Replace the pump with a spare roughing pump. <br />
<br />
*Turbo Pump failed: If the pressure goes abruptly above 10<sup>-3</sup> Torr the Turbo will shut-off automatically by its safety system. And, failure of the pump may not be very obvious but if the shell's pressure was stable as well as the temperature along the different temperature sensors of the Fridge (Check all the temperatures of the fridge during the past ~20 minutes of the event), a turbo pump failure may be the cause. If the pressure is maintained of the order of 80 mTorr or below by the roughing pump attempt to restart the turbo pump and see if the temperature decreases to at least 10<sup>-5</sup> Torr in a couple of minutes. If it does, the turbo pump may be OK and monitor all the other systems to find the cause and/or prevent a repetition of the event. But, if it does not restart, please change the turbo with a spare.<br />
<br />
'''Fridge'''<br />
<br />
The Fridge pressure is related with the temperature of the nose when the temperature is below 4K, as shown in Figure X. It is very difficult to detect Fridge leaks during normal operation of the Fridge but here is a list of things you need to check regularly during the cool-down:<br />
*During/After a target swap: Make sure the o-rings of the Piston are adequate. Be careful in the insert/extract of the target stick. If the o-rings are compromised after the extraction of the sticks, change them by new ones. Piston o-rings can be found in the red buckets on the wall near to the roots. <br />
*Moving the microwaves/target stick: Since the mechanism for moving the microwaves/target stick changes the sealings that keep vacuum on the Fridge. Always make sure that you do those slow and careful. The rule to follow is that after any movement, the fridge should return to its operation status. Therefore do changes one by one and wait until the Fridge recovers to its previous state to make any other change. <br />
Make shore you always do it slowly avoiding getting the Fridge above of 20K. <br />
<br />
'''Note''' Don't forget to always check that the pop-off valves are unfrozen and are in every space (Magnet and fridge) to avoid over pressuring at all time.</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Monitor_vacuum_pumps_and_change_or_replace_a_pump_if_needed&diff=6458Monitor vacuum pumps and change or replace a pump if needed2020-06-11T02:56:55Z<p>Nathaly: Created page with "Previous page: Shift Workers Documentation In the system we have two reservoirs that we are constantly pumping, the Shells and the Fridge. The Shells is a high vacuum sys..."</p>
<hr />
<div>Previous page: [[Shift Workers Documentation]]<br />
<br />
In the system we have two reservoirs that we are constantly pumping, the Shells and the Fridge. The Shells is a high vacuum system and the Fridge is a 4He evaporation system operated at 1K. The pressures range expected for each apparatus are summarized in the following table. <br />
<br />
{| class="wikitable"<br />
|-<br />
! Apparatus<br />
! Pressure (Torr)<br />
|-<br />
| Shells<br />
| 10e-6 - 10e-7<br />
|-<br />
| Fridge<br />
| ~0.1 @ 1K<br />
Pressure depends on Helium4 Temperature. See the Figure.<br />
|}<br />
<br />
'''Shells'''<br />
<br />
Shells pressure is obtained and maintained by a turbo pump. Keeping low pressure in the chamber is vital for the isolation of the 4K and 1K Helium of the magnet and fridge respectively. The pressure is monitored by a Ionivac ITR-090 and is recorded in the main vi. Monitoring the shells pressure over the course of the cool-down is vital to get leaks before they are unstoppable. Please monitor the pressure regularly and log any unexpected behavior. Here is a list of situations that you may encounter during the cool-down:<br />
<br />
i. Shells pressure decreases as fridge temperature decreases: This effect is caused by the cryogenic cooling generated by the nose of the Fridge. It is normal, and it is expected that when the Fridge achieves the lowest temperature, the shells will get the minimum pressure during the cool-down. <br />
<br />
ii. Sudden spike above 10-4Torr. This may be a symptom of a leak and here is a list of the possible causes:<br />
<br />
*Abruptly drop in the Fridge temperature. Check the temperature of the CCS located in the shells. If the temperature changes by more than 50 degrees in less than 5 minutes the sudden cooling of the fridge may be creating an abrupt gradient of temperature in the teflon o-ring and it generates a leak. Follow the next steps:<br />
*#Close the needle valves and the roots if the are operating, only keep the roughing pumps, and wait until the pressure is recovered below 10<sup>-5</sup> Torr.<br />
*#Then, slightly open the heat exchanger valve and observe for a couple of minutes the behavior of the Pressure. Adjust the needle valve to a place you find that the cooling of the Fridge is constant and slow.<br />
*#When the temperature of the CCS in the shells reaches the temperature of the failure, proceed to normal operation of the pumps. But, continue monitoring closely in case you need to turn them off again.<br />
<br />
*Loose pressure in the lambda point of Helium4. The lambda point of Helium4 is shown in Figure. If the pressure of the shells is lost when the Fridge approaches the lambda point of Helium4, the presence of a cold leak in the shells is highly probable. Follow the next steps: <br />
*#Turn off the roots (in case they are on).<br />
*#Close the gate valve and needle valves. Monitor if the pressure of the shells is recovered when the Fridge exits the lambda point.<br />
*#Open the Gate valve slightly and monitor the shells while they approach the lambda point. In case the event repeats, close the gate valve and repeat again, the steps above. If the temperature in the Fridge continues increasing, it means that you possibly lost all the Helium4 in the Fridge. Therefore, open slightly the needle valves. <br />
*#If you confirm the presence of a cold leak the physics goals of the cool-down may change and you need to consult your shift leader. While she/he redirect the course of the cool-down, don’t allow the Fridge to warm. Therefore, the steps of opening and closing the gate valve/needle valves need to be repeated constantly until the goals of the cool-down are reset. <br />
<br />
*Roughing pump failed: If there is an abrupt oil spill of the pump and/or it does not restart. Solution: Replace the pump with a spare roughing pump. <br />
<br />
*Turbo Pump failed: If the pressure goes abruptly above 10<sup>-3</sup> Torr the Turbo will shut-off automatically by its safety system. And, failure of the pump may not be very obvious but if the shell's pressure was stable as well as the temperature along the different temperature sensors of the Fridge (Check all the temperatures of the fridge during the past ~20 minutes of the event), a turbo pump failure may be the cause. If the pressure is maintained of the order of 80 mTorr or below by the roughing pump attempt to restart the turbo pump and see if the temperature decreases to at least 10<sup>-5</sup> Torr in a couple of minutes. If it does, the turbo pump may be OK and monitor all the other systems to find the cause and/or prevent a repetition of the event. But, if it does not restart, please change the turbo with a spare.<br />
<br />
'''Fridge'''<br />
<br />
The Fridge pressure is related with the temperature of the nose when the temperature is below 4K, as shown in Figure X. It is very difficult to detect Fridge leaks during normal operation of the Fridge but here is a list of things you need to check regularly during the cool-down:<br />
*During/After a target swap: Make sure the o-rings of the Piston are adequate. Be careful in the insert/extract of the target stick. If the o-rings are compromised after the extraction of the sticks, change them by new ones. Piston o-rings can be found in the red buckets on the wall near to the roots. <br />
*Moving the microwaves/target stick: Since the mechanism for moving the microwaves/target stick changes the sealings that keep vacuum on the Fridge. Always make sure that you do those slow and careful. The rule to follow is that after any movement, the fridge should return to its operation status. Therefore do changes one by one and wait until the Fridge recovers to its previous state to make any other change. <br />
Make shore you always do it slowly avoiding getting the Fridge above of 20K. <br />
<br />
'''Note''' Don't forget to always check that the pop-off valves are un frozen and free in every space (Magnet and fridge) to avoid over pressuring at all time.</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6457Shift Workers Documentation2020-06-11T01:57:34Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|[[Monitor NMR data and check data output]]<br />
|David<br />
|-<br />
|[[Ramp up and down the magnet]]<br />
|Google Doc/David <br />
|-<br />
|[[Monitor and operate the microwaves / know how to find correct frequency]]<br />
|Ellie/David<br />
|-<br />
|[[VNA/VME swaps and calibrations]]<br />
|Ellie/David<br />
|-<br />
|[[Setup system for changes in the polarization parameters (B, T, NMR, target…) Physics Documentation]]<br />
|Karl<br />
|-<br />
|[[Log and report changes in the system]]<br />
|Nathaly<br />
|-<br />
|[[Monitor vacuum pumps and change or replace a pump if needed]]<br />
|Nathaly<br />
|-<br />
|[[Monitor flowmeters]]<br />
|Nathaly<br />
|-<br />
|[[Monitor shells pressure and follow the procedures of a possible leak]]<br />
|Nathaly<br />
|-<br />
|[[Monitor/Operating needle valves]]<br />
|Google Doc/Michael<br />
|-<br />
|[[Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge]]<br />
|Karl<br />
|-<br />
|[[Heat Straps monitor / External heater of the separator line]]<br />
|Ellie/Nathaly<br />
|-<br />
|[[Monitor LHe level in the Magnet and call for fillings]]<br />
|Google Doc<br />
|-<br />
|[[Monitor LHe in the Fridge and adjust them if needed]]<br />
|Future Work<br />
|-<br />
|[[Magnet refills.]]<br />
|Google Doc<br />
|-<br />
|[[Target swaps]]<br />
|Karl<br />
|-<br />
|[[Repair NMR cable]]<br />
|Marie<br />
|-<br />
|[[Calculation of LHe to vapor to convert to flowmeter reading]]<br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
'''Future Discussion:'''<br />
<br />
Define Shift Leader and target operators tasks and names<br />
<br />
Shift Checklist: Physical (What should be included?)<br />
<br />
Shift Summary: At the end of the shift in the Logbook (What should be included?)<br />
<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Log_and_report_changes_in_the_system&diff=6456Log and report changes in the system2020-06-11T01:55:39Z<p>Nathaly: </p>
<hr />
<div>Previous page: [[Shift Workers Documentation]]<br />
<br />
Information and timing of all systems in the lab is crucial at the moment of data analysis. Therefore, one of the most important tasks as shift leader consists in login all the changes and/or particular performances of the system. This includes magnetic fields, needle valves, target stick conditions, and every piece of equipment that is operated during the cool-down. In addition, attach pictures/diagrams/among others when you consider necessary. Don’t hesitate in making an entry when you think something is out of normal, it is better to make a new entry with a correction later in the logbook that leaves out an event that could be crucial to understand a possible problem.<br />
<br />
The log entries are stored in the slack channel called Logbook, and there are two ways of making an entry:<br />
<br />
i. VI: In the cool-down vi there is a window that allows entries in the logbook. Please enter detailed information about the event and make sure your name is written correctly in the name box. Submit the entry and that will be posted at Slack.<br />
<br />
ii. Personal Electronic Device (Cell Phone, Computer, tablet, …): Using your personal device you can login the information to slack in the logbook channel directly. Make sure to include all the information.<br />
<br />
'''Checking previous logentries:'''<br />
<br />
Use the vi in the main computer to search the particular entry you are looking for. You can narrow down the options by using clue words/person who made the entry/time or specific date.</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6455Shift Workers Documentation2020-06-11T01:47:34Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|[[Monitor NMR data and check data output.]]<br />
|David<br />
|-<br />
|[[Ramp up and down the magnet.]]<br />
|Google Doc/David <br />
|-<br />
|[[Monitor and operate the microwaves / know how to find correct frequency.]]<br />
|Ellie/David<br />
|-<br />
|[[VNA/VME swaps and calibrations]]<br />
|Ellie/David<br />
|-<br />
|[[Setup system for changes in the polarization parameters (B, T, NMR, target…) Physics Documentation]]<br />
|Karl<br />
|-<br />
|[[Log and report changes in the system]]<br />
|Nathaly<br />
|-<br />
|[[Monitor vacuum pumps and change or replace a pump if needed.]]<br />
|Nathaly<br />
|-<br />
|[[Monitor flowmeters.]]<br />
|Nathaly<br />
|-<br />
|[[Monitor shells pressure and follow the procedures of a possible leak.]]<br />
|Nathaly<br />
|-<br />
|[[Monitor/Operating needle valves.]]<br />
|Google Doc/Michael<br />
|-<br />
|[[Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge.]]<br />
|Karl<br />
|-<br />
|[[Heat Straps monitor / External heater of the separator line]]<br />
|Ellie/Nathaly<br />
|-<br />
|[[Monitor LHe level in the Magnet and call for fillings.]]<br />
|Google Doc<br />
|-<br />
|[[Monitor LHe in the Fridge and adjust them if needed]]<br />
|Future Work<br />
|-<br />
|[[Magnet refills.]]<br />
|Google Doc<br />
|-<br />
|[[Target swaps]]<br />
|Karl<br />
|-<br />
|[[Repair NMR cable]]<br />
|Marie<br />
|-<br />
|[[Calculation of LHe to vapor to convert to flowmeter reading.]]<br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
'''Future Discussion:'''<br />
<br />
Define Shift Leader and target operators tasks and names<br />
<br />
Shift Checklist: Physical (What should be included?)<br />
<br />
Shift Summary: At the end of the shift in the Logbook (What should be included?)<br />
<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Log_and_report_changes_in_the_system&diff=6454Log and report changes in the system2020-06-11T01:44:42Z<p>Nathaly: Created page with "Information and timing of all systems in the lab is crucial at the moment of data analysis. Therefore, one of the most important tasks as shift leader consists in login all th..."</p>
<hr />
<div>Information and timing of all systems in the lab is crucial at the moment of data analysis. Therefore, one of the most important tasks as shift leader consists in login all the changes and/or particular performances of the system. This includes magnetic fields, needle valves, target stick conditions, and every piece of equipment that is operated during the cool-down. In addition, attach pictures/diagrams/among others when you consider necessary. Don’t hesitate in making an entry when you think something is out of normal, it is better to make a new entry with a correction later in the logbook that leaves out an event that could be crucial to understand a possible problem.<br />
<br />
The log entries are stored in the slack channel called Logbook, and there are two ways of making an entry:<br />
<br />
i. VI: In the cool-down vi there is a window that allows entries in the logbook. Please enter detailed information about the event and make sure your name is written correctly in the name box. Submit the entry and that will be posted at Slack.<br />
<br />
ii. Personal Electronic Device (Cell Phone, Computer, tablet, …): Using your personal device you can login the information to slack in the logbook channel directly. Make sure to include all the information.<br />
<br />
'''Checking previous logentries:'''<br />
<br />
Use the vi in the main computer to search the particular entry you are looking for. You can narrow down the options by using clue words/person who made the entry/time or specific date.</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6450Shift Workers Documentation2020-05-05T20:10:36Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|Monitor NMR data and check data output.<br />
|David<br />
|-<br />
|Ramp up and down the magnet.<br />
|Google Doc/David <br />
|-<br />
|Monitor and operate the microwaves / know how to find correct frequency.<br />
|Ellie/David<br />
|-<br />
|VNA/VME swaps and calibrations <br />
|Ellie/David<br />
|-<br />
|Setup system for changes in the polarization parameters (B, T, NMR, target…)<br />
Physics Documentation<br />
|Karl<br />
|-<br />
|Log and report changes in the system, <br />
|Nathaly<br />
|-<br />
|Monitor vacuum pumps and change or replace a pump if needed. <br />
|Nathaly<br />
|-<br />
|Monitor flowmeters. <br />
|Nathaly<br />
|-<br />
|Monitor shells pressure and follow the procedures of a possible leak. <br />
|Nathaly<br />
|-<br />
|Monitor/Operating needle valves.<br />
|Google Doc/Michael<br />
|-<br />
|Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge. <br />
|Karl<br />
|-<br />
|Heat Straps monitor / External heater of the separator line <br />
|Ellie/Nathaly<br />
|-<br />
|Monitor LHe level in the Magnet and call for fillings. <br />
|Google Doc<br />
|-<br />
|Monitor LHe in the Fridge and adjust them if needed <br />
|Future Work<br />
|-<br />
|Magnet refills. <br />
|Google Doc<br />
|-<br />
|Target swaps<br />
|Karl<br />
|-<br />
|Repair NMR cable <br />
|Marie<br />
|-<br />
|Calculation of LHe to vapor to convert to flowmeter reading. <br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
'''Future Discussion:'''<br />
<br />
Define Shift Leader and target operators tasks and names<br />
<br />
Shift Checklist: Physical (What should be included?)<br />
<br />
Shift Summary: At the end of the shift in the Logbook (What should be included?)<br />
<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6449Shift Workers Documentation2020-05-05T20:03:43Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|Monitor NMR data and check data output.<br />
|David<br />
|-<br />
|Ramp up and down the magnet.<br />
|Google Doc/David <br />
|-<br />
|Monitor and operate the microwaves / know how to find correct frequency.<br />
|Ellie/David<br />
|-<br />
|VNA/VME swaps and calibrations <br />
|Ellie/David<br />
|-<br />
|Setup system for changes in the polarization parameters (B, T, NMR, target…)<br />
Physics Documentation<br />
|Karl<br />
|-<br />
|Log and report changes in the system, <br />
|Nathaly<br />
|-<br />
|Monitor vacuum pumps and change or replace a pump if needed. <br />
|Nathaly<br />
|-<br />
|Monitor flowmeters. <br />
|Nathaly<br />
|-<br />
|Monitor shells pressure and follow the procedures of a possible leak. <br />
|Nathaly<br />
|-<br />
|Monitor/Operating needle valves.<br />
|Google Doc/Michael<br />
|-<br />
|Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge. <br />
|Karl<br />
|-<br />
|Heat Straps monitor / External heater of the separator line <br />
|Ellie/Nathaly<br />
|-<br />
|Monitor LHe level in the Magnet and call for fillings. <br />
|Google Doc<br />
|-<br />
|Monitor LHe in the Fridge and adjust them if needed <br />
|Future Work<br />
|-<br />
|Magnet refills. <br />
|Google Doc<br />
|-<br />
|Target swaps<br />
|Karl<br />
|-<br />
|Repair NMR cable <br />
|Marie<br />
|-<br />
|Calculation of LHe to vapor to convert to flowmeter reading. <br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
'''Future Discussion:'''<br />
<br />
Define Shift Leader and target operators tasks and names<br />
<br />
Shift Checklist: Physical (What should be included?)<br />
<br />
Sift Summary: At the end of the shift in the Logbook (What should be included?)<br />
<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6448Shift Workers Documentation2020-05-05T20:02:44Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|Monitor NMR data and check data output.<br />
|David<br />
|-<br />
|Ramp up and down the magnet.<br />
|Google Doc/David <br />
|-<br />
|Monitor and operate the microwaves / know how to find correct frequency.<br />
|Ellie/David<br />
|-<br />
|VNA/VME swaps and calibrations <br />
|Ellie/David<br />
|-<br />
|Setup system for changes in the polarization parameters (B, T, NMR, target…)<br />
Physics Documentation<br />
|Karl<br />
|-<br />
|Log and report changes in the system, <br />
|Nathaly<br />
|-<br />
|Monitor vacuum pumps and change or replace a pump if needed. <br />
|Nathaly<br />
|-<br />
|Monitor flowmeters. <br />
|Nathaly<br />
|-<br />
|Monitor shells pressure and follow the procedures of a possible leak. <br />
|Nathaly<br />
|-<br />
|Monitor/Operating needle valves.<br />
|Google Doc/Michael<br />
|-<br />
|Monitor fridge temperatures and make sure to turn on/off heaters inside the Fridge. <br />
|Karl<br />
|-<br />
|Heat Straps monitor / External heater of the separator line <br />
|Ellie/Nathaly<br />
|-<br />
|Monitor LHe level in the Magnet and call for fillings. <br />
|Google Doc<br />
|-<br />
|Monitor LHe in the Fridge and adjust them if needed <br />
|Future Work<br />
|-<br />
|Magnet refills. <br />
|Google Doc<br />
|-<br />
|Target swaps<br />
|Karl<br />
|-<br />
|Repair NMR cable <br />
|Marie<br />
|-<br />
|Calculation of LHe to vapor to convert to flowmeter reading. <br />
|Michael<br />
|}<br />
<br />
Google Doc means that part of the section or the section is already written [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit here].<br />
<br />
Future Discussion:<br />
Define Shift Leader and target operators tasks and names<br />
Shift Checklist: Physical (What should be included?)<br />
Sift Summary: At the end of the shift in the Logbook (What should be included?)<br />
Google Doc or Wiki?</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6447Shift Workers Documentation2020-05-05T19:52:23Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|Monitor NMR data and check data output.<br />
|David<br />
|-<br />
|Ramp up and down the magnet.<br />
|Google Doc/David <br />
<br />
|}</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6446Shift Workers Documentation2020-05-05T19:52:05Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|Monitor NMR data and check data output.<br />
|David<br />
|-<br />
|Ramp up and down the magnet.<br />
|Google Doc/David <br />
<br />
}</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6445Shift Workers Documentation2020-05-05T19:51:50Z<p>Nathaly: </p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of <br />
Documentation<br />
|-<br />
|Monitor NMR data and check data output.<br />
|David<br />
|-<br />
|Ramp up and down the magnet.<br />
|Google Doc/David <br />
|<br />
}</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Shift_Workers_Documentation&diff=6444Shift Workers Documentation2020-05-05T19:51:23Z<p>Nathaly: Created page with "In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included: {| class="wikitable" |- ! S..."</p>
<hr />
<div>In the process of complete the documentation needed for the shift workers to be in the DNP Lab at UNH. The following sections need to be included:<br />
<br />
{| class="wikitable"<br />
|-<br />
! Section<br />
! Responsible of \n <br />
Documentation<br />
|-<br />
|Monitor NMR data and check data output.<br />
|<br />
|David<br />
|-<br />
|Ramp up and down the magnet.<br />
|Google Doc/David <br />
|<br />
}</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=UNH_DNP&diff=6443UNH DNP2020-05-05T19:43:54Z<p>Nathaly: /* Required Safety Training */</p>
<hr />
<div>=Lab How-To/Info=<br />
*[http://www.unhlonglab.com Long Lab Website]<br />
*[https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o UNH DNP Cool-Down Procedures ]<br />
*[https://docs.google.com/spreadsheets/d/1_nw6j2RSCpUTscSoS7oh7ERnyFm4OvxX0grtTq48nOE/edit#gid=1514387755 The DNP Master Spreadsheet]<br />
*[http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.pdf Magnet Operating Procedure] ([http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.tex .tex source])<br />
* [[DNP GPIB Addresses]]<br />
* [[Oven Operations]]<br />
* [[Running DNP LabView DAQ]]<br />
* [[Helium 4 Vapor Pressure]]<br />
* [[Vacuum Pumps]]<br />
* [[Vacuum Gauges]]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/DP_190_guide.pdf Epoxy DP-190 Gray]<br />
*AMI Magnet cheatsheet [http://nuclear.unh.edu/~slifer/faq/ami.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ami.tex tex]<br />
*Pfeiffer DUO 65 roughing pump cheatsheet [http://nuclear.unh.edu/~slifer/faq/duo_65.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/duo_65.tex tex]<br />
*Tripod and Chaindrop [http://nuclear.unh.edu/~slifer/faq/chaindrop.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ch.tgz tex]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Indium_Seals.pdf Indium Seals]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Vacuum_practices.pdf General Good Vacuum Practices]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Shells_Design.pdf Design and Construction of the Shells for the Fridge]<br />
*[[Cryogen Liquid Level Monitors]]<br />
*[https://unh.box.com/s/avf1lzfmut83173suxroptxumpuxl1x0 Slifer Lab Equipment Manuals]<br />
*[https://unh.box.com/s/op1d98sj7lvigbaify5fzf6org99a4df Long Lab Equipment Manuals]<br />
<br />
=Polarization Calculation=<br />
[http://nuclear.unh.edu/~ryan/polcalc.php Ryan's TE Polarization and Calibration Calculator]<br />
<br />
=Experiment Analysis in Progress= <br />
* [https://hallaweb.jlab.org/wiki/index.php/G2p The Proton Spin Structure Function g2p] <br />
<br />
* [https://clasweb.jlab.org/rungroups/eg4/wiki/index.php/Main_Page EG4: The GDH Sum Rule and the Proton Spin Structure Function g1p] <br />
<br />
* [http://hallaweb.jlab.org/experiment/E05-102/ Quasi-Elastic Electron Scattering from 3He]<br />
<br />
=Approved Experiments= <br />
* [https://hallcweb.jlab.org/wiki/index.php/B1 The Deuteron Tensor Structure Function b1] (C1 approved)<br />
* [https://hallcweb.jlab.org/wiki/index.php/Azz Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries] (C1 approved)<br />
<br />
=Cryogenic System=<br />
* [[Comsol Modeling]]<br />
<br />
=Target Cool Downs= <br />
{|border=1 <br />
| width="150pt" | '''Dates''' <br />
| width="400pt" | '''Purpose''' <br />
|- <br />
|2019 Summer || [https://docs.google.com/document/d/18GYlRFntRg0p6TfwzZ6M9dA2b6GOdyhp3igfzo7Ljko/edit?usp=sharing Readiness Goals] <br> [https://docs.google.com/document/d/1vPZlyCVwtQm-F3BXG1Jvpv5woabOMk3XDeBSLbRqHMU/edit Items To-Do] <br />
|- <br />
|2019-03 || [[2019-03 Cool Down Analysis | NMR Systems Comparison, Butanol Proton Signals, mm-Wave Saturation Test]] <br />
|- <br />
|2018-11 || [[2018-11 Cool Down Analysis | First Proton TE and Enhancement (Epoxy) ]] <br />
|- <br />
|2018-08 || [[2018-08 Cool Down Analysis | Mapped Out Internal SC Magnet Fields ]] <br />
|- <br />
|2018-04-10 || [[2018-04-10 Cool Down Analysis | Cool Down Analysis ]] <br />
|- <br />
|2018-03-15 || [[2018-03-09 Cool Down Analysis | First Vertical fridge cool-down]] <br />
|- <br />
|2015-09-22 to 2015-09-26 || [[2015-09 Cool Down Analysis | First fridge cool-down with LHe, Attempted 4.2K NMR]] <br />
|- <br />
|2015-07-30 to 2015-08-21 || [[2015-07 to 2015-08 Cool Downs | Fridge cool-downs with LN2]] <br />
|- <br />
|2014-01-06 to 2014-01-17 || [[2014-01 Cool Down Analysis | First magnet cool-down, magnetic field map]] <br />
|- <br />
|}<br />
<br />
=Talks and Presentations= <br />
*[https://www.unhlonglab.com/presentations-and-posters UNH Long Lab Presentations and Posters]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="75pt" | '''Presenter''' <br />
| width="150pt" | '''Location''' <br />
| width="400pt" | '''Title''' <br />
|-<br />
|2016-05-16 || R. Zielinski || JLab RC Workshop || Systematic error analysis of the Mo and Tsai radiative corrections scheme at low Q2 [http://nuclear.unh.edu/~ryan/Doc/JLAB_RC.pdf pdf] <br />
|-<br />
|2015-07-08 || E. Long || PAC43 || Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pptx pptx]<br />
|-<br />
|2015-07-02 || R. Zielinski || Chiral Dynamics Workshop|| Overview of the g2p experiment [http://nuclear.unh.edu/~ryan/Doc/JSTF-2015-Zielinski.pdf pdf] <br />
|-<br />
|-<br />
|2015-05-22 || E. Long || CIPANP || Spin Structure at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2015-05-22-ELong-CIPANP.pdf pdf]<br />
|-<br />
|2015-04-21 || E. Long || GWU Colloquium || Probing Nucleons With Polarized Targets [http://nuclear.unh.edu/~elong/talks/2015-04-21-ELong-GWU.pdf pdf]<br />
|-<br />
|2015-03-12 || E. Long || UCA Colloquium || Understanding the Nature of Normal Matter [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pptx pptx] [https://youtu.be/lSPfAoJHtOs YouTube] [https://plus.google.com/events/ceuieen0d4vkmvvrftblsrjrgu4 Google+]<br />
|-<br />
|2015-03-10 || E. Long || Spectator Tagging Workshop || Tensor Polarized Deuteron Experiments [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pptx pptx]<br />
|-<br />
|2014-11-17 || E. Long || HiX Workshop || Overview of Spin Structure at Large x [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pptx pptx]<br />
|-<br />
|2014-09-13 || E. Long || QCD Town Hall Meeting || Tensor Spin Observables [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.ppt ppt]<br />
|-<br />
|2014-09-12 || E. Long || Juniata College Colloquium || Understanding the Structure of Nucleons [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata-Seminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata_Seminar-ELong.pptx pptx]<br />
|-<br />
|2014-08-12 || E. Long || Gordon Conference || Probing Nuclear Structure through Electron Scattering from Tensor Polarized Targets [http://nuclear.unh.edu/~elong/talks/2014-08-12-ELong-GRC.pdf pdf]<br />
|- <br />
|2014-06-06 || E. Long || Hall C Collab. Meeting || Probing Short Range Structure Through the Tensor Asymmetry Azz (TAzz) at x>1 [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pptx pptx] <br />
|-<br />
|2014-04-21 || Z. Abbas || UNH URC || Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/~elong/talks/2014-04-23-URC-Zain.pptx pptx]<br />
|-<br />
|2014-03-11 || E. Long || Tensor Workshop || Tensor Asymmetry Azz at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2014-03-11-ELong-TensorWorkshop.pdf pdf] [http://www.jlab.org/conferences/tensor2014/tues-am/ELong-TensorWorkshop.pptx pptx] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || The Deuteron Polarized Tensor Structure Function b1 [http://www.jlab.org/conferences/tensor2014/mon-am/slifer.pdf pdf] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || Tensor Spin Observables Workshop Welcome [http://www.jlab.org/conferences/tensor2014/mon-am/tensor_workshop_welcome.ppt ppt] <br />
|- <br />
|2014-03-10 - 2014-03-12 || Multiple || Tensor Workshop || [[Image:2014-03-18-TSOWorkshop.jpg]] [http://www.jlab.org/conferences/tensor2014/ Tensor Polarized Spin Observables Workshop] <br />
|- <br />
|2014-01-24 || E. Long || Uni. of Manitoba Seminar || Building the Bridge Between Partons and Nulei [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pptx pptx] <br />
|- <br />
|2013-12-14 || E. Long || Hall A Collab. Meeting || E08-005: Ay0 in Quasi-Elastic 3He(e,e'n) Scattering [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pptx pptx] <br />
|}<br />
<br />
=Technical Notes and Theses=<br />
*[http://twist.phys.virginia.edu/documents.html UVa Polarized Target Technical Resource Page]<br />
*[https://www.unhlonglab.com/technical-notes UNH Long Lab Technical Notes]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="125pt" | '''Author''' <br />
| width="125pt" | '''Type''' <br />
| width="630pt" | '''Title''' <br />
|- <br />
|2018-03 || UNH NPG Target Group || Operating Procedures || UNH DNP Cool-Down Procedures [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit# (Google Drive)] <br />
|-<br />
|2015-02-11 || P. Sieg || School Report|| Effects of Temperature on Carbon Resistors [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.pdf (pdf)] [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.docx (docx)] [https://docs.google.com/document/d/1TJKjWPNV1Y7o2zKqK2G1NmIff5R7Q_xZ1qXsxEAE5EU/edit (Google Drive)] <br />
|-<br />
|2014-09-30 || Z. Abbas || URA Report|| Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain_report.tgz (tgz)] <br />
|-<br />
|2014-03-11 || Z. Abbas || URA Application|| Low Temperature Thermometery for Cryogenically Cooled Solid, Spin Polarized Ammonia Target [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain.tgz (tgz)] <br />
|-<br />
|2013-05-24 || E. Long || b1 || Diluting Asymmetries in Extracting b1 from a Measurement of Azz [http://nuclear.unh.edu/~elong/analysis_files/2013-05-24/b1_extra_asyms.pdf (pdf)]<br />
|-<br />
|2013-05-16 || E. Long || b1 || Rates and Systematic Uncertainty Calculations for a Measurement of Azz (JLAB-TN-13-029) [http://nuclear.unh.edu/~elong/analysis_files/2013-05-16/Azz_error.pdf (pdf)]<br />
|-<br />
|2011-03-14 ||T. Bielarski|| Ind. Study || Analysis of Deuteron Polarization for the EG4 Experiment [http://nuclear.unh.edu/dnp_lab/2011_Bielarski_Trevor_795.pdf (pdf)]<br />
|-<br />
|2011-05-20 ||J. Donaghy|| Senior Thesis ||Construction of an NMR Polarimeter for Dynamically Polarized Nuclear Targets [http://nuclear.unh.edu/dnp_lab/qmeter_Donaghy_Thesis.pdf (pdf)] <br />
|-<br />
|2010-10-06 ||J. Donaghy|| URA Application|| Nuclear Magnetic Resonance Polarimetry for DNP Target [http://nuclear.unh.edu/dnp_lab/URA_application_Donaghy_NMR_2010.pdf (pdf)]<br />
|}<br />
<br />
=Required Safety Training=<br />
{|border=1 <br />
| width="300pt" | '''Title''' <br />
| width="225pt" | '''Method''' <br />
|- <br />
|Lab OSP || [http://nuclear.unh.edu/~elong/talks/Demeritt%20103.pdf Read and sign physical copy in lab]<br />
|-<br />
|Cryogenic Liquid Safety || Administered on Blackboard by EH&S<br />
|-<br />
|Magnet Safety Training || Administered on Blackboard by EH&S<br />
|-<br />
|Laboratory and Chemical Safety Training || Administered on Blackboard by EH&S<br />
|}<br />
<br />
[https://hallaweb.jlab.org/wiki/index.php/Solid_Polarized_Target g2p Solid Polarized Target Documents]<br />
<br />
[[Shift Workers Documentation]]<br />
<br />
=Images= <br />
* [http://www.flickr.com/photos/100401641@N08/ unhpoltarg Flickr]<br />
<br />
=Collaboration Meeting Minutes=<br />
* [[UNH DNP Collaboration Weekly Meeting Minutes]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=UNH_DNP&diff=6442UNH DNP2020-05-05T19:42:51Z<p>Nathaly: /* Required Safety Training */</p>
<hr />
<div>=Lab How-To/Info=<br />
*[http://www.unhlonglab.com Long Lab Website]<br />
*[https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o UNH DNP Cool-Down Procedures ]<br />
*[https://docs.google.com/spreadsheets/d/1_nw6j2RSCpUTscSoS7oh7ERnyFm4OvxX0grtTq48nOE/edit#gid=1514387755 The DNP Master Spreadsheet]<br />
*[http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.pdf Magnet Operating Procedure] ([http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.tex .tex source])<br />
* [[DNP GPIB Addresses]]<br />
* [[Oven Operations]]<br />
* [[Running DNP LabView DAQ]]<br />
* [[Helium 4 Vapor Pressure]]<br />
* [[Vacuum Pumps]]<br />
* [[Vacuum Gauges]]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/DP_190_guide.pdf Epoxy DP-190 Gray]<br />
*AMI Magnet cheatsheet [http://nuclear.unh.edu/~slifer/faq/ami.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ami.tex tex]<br />
*Pfeiffer DUO 65 roughing pump cheatsheet [http://nuclear.unh.edu/~slifer/faq/duo_65.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/duo_65.tex tex]<br />
*Tripod and Chaindrop [http://nuclear.unh.edu/~slifer/faq/chaindrop.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ch.tgz tex]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Indium_Seals.pdf Indium Seals]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Vacuum_practices.pdf General Good Vacuum Practices]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Shells_Design.pdf Design and Construction of the Shells for the Fridge]<br />
*[[Cryogen Liquid Level Monitors]]<br />
*[https://unh.box.com/s/avf1lzfmut83173suxroptxumpuxl1x0 Slifer Lab Equipment Manuals]<br />
*[https://unh.box.com/s/op1d98sj7lvigbaify5fzf6org99a4df Long Lab Equipment Manuals]<br />
<br />
=Polarization Calculation=<br />
[http://nuclear.unh.edu/~ryan/polcalc.php Ryan's TE Polarization and Calibration Calculator]<br />
<br />
=Experiment Analysis in Progress= <br />
* [https://hallaweb.jlab.org/wiki/index.php/G2p The Proton Spin Structure Function g2p] <br />
<br />
* [https://clasweb.jlab.org/rungroups/eg4/wiki/index.php/Main_Page EG4: The GDH Sum Rule and the Proton Spin Structure Function g1p] <br />
<br />
* [http://hallaweb.jlab.org/experiment/E05-102/ Quasi-Elastic Electron Scattering from 3He]<br />
<br />
=Approved Experiments= <br />
* [https://hallcweb.jlab.org/wiki/index.php/B1 The Deuteron Tensor Structure Function b1] (C1 approved)<br />
* [https://hallcweb.jlab.org/wiki/index.php/Azz Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries] (C1 approved)<br />
<br />
=Cryogenic System=<br />
* [[Comsol Modeling]]<br />
<br />
=Target Cool Downs= <br />
{|border=1 <br />
| width="150pt" | '''Dates''' <br />
| width="400pt" | '''Purpose''' <br />
|- <br />
|2019 Summer || [https://docs.google.com/document/d/18GYlRFntRg0p6TfwzZ6M9dA2b6GOdyhp3igfzo7Ljko/edit?usp=sharing Readiness Goals] <br> [https://docs.google.com/document/d/1vPZlyCVwtQm-F3BXG1Jvpv5woabOMk3XDeBSLbRqHMU/edit Items To-Do] <br />
|- <br />
|2019-03 || [[2019-03 Cool Down Analysis | NMR Systems Comparison, Butanol Proton Signals, mm-Wave Saturation Test]] <br />
|- <br />
|2018-11 || [[2018-11 Cool Down Analysis | First Proton TE and Enhancement (Epoxy) ]] <br />
|- <br />
|2018-08 || [[2018-08 Cool Down Analysis | Mapped Out Internal SC Magnet Fields ]] <br />
|- <br />
|2018-04-10 || [[2018-04-10 Cool Down Analysis | Cool Down Analysis ]] <br />
|- <br />
|2018-03-15 || [[2018-03-09 Cool Down Analysis | First Vertical fridge cool-down]] <br />
|- <br />
|2015-09-22 to 2015-09-26 || [[2015-09 Cool Down Analysis | First fridge cool-down with LHe, Attempted 4.2K NMR]] <br />
|- <br />
|2015-07-30 to 2015-08-21 || [[2015-07 to 2015-08 Cool Downs | Fridge cool-downs with LN2]] <br />
|- <br />
|2014-01-06 to 2014-01-17 || [[2014-01 Cool Down Analysis | First magnet cool-down, magnetic field map]] <br />
|- <br />
|}<br />
<br />
=Talks and Presentations= <br />
*[https://www.unhlonglab.com/presentations-and-posters UNH Long Lab Presentations and Posters]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="75pt" | '''Presenter''' <br />
| width="150pt" | '''Location''' <br />
| width="400pt" | '''Title''' <br />
|-<br />
|2016-05-16 || R. Zielinski || JLab RC Workshop || Systematic error analysis of the Mo and Tsai radiative corrections scheme at low Q2 [http://nuclear.unh.edu/~ryan/Doc/JLAB_RC.pdf pdf] <br />
|-<br />
|2015-07-08 || E. Long || PAC43 || Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pptx pptx]<br />
|-<br />
|2015-07-02 || R. Zielinski || Chiral Dynamics Workshop|| Overview of the g2p experiment [http://nuclear.unh.edu/~ryan/Doc/JSTF-2015-Zielinski.pdf pdf] <br />
|-<br />
|-<br />
|2015-05-22 || E. Long || CIPANP || Spin Structure at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2015-05-22-ELong-CIPANP.pdf pdf]<br />
|-<br />
|2015-04-21 || E. Long || GWU Colloquium || Probing Nucleons With Polarized Targets [http://nuclear.unh.edu/~elong/talks/2015-04-21-ELong-GWU.pdf pdf]<br />
|-<br />
|2015-03-12 || E. Long || UCA Colloquium || Understanding the Nature of Normal Matter [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pptx pptx] [https://youtu.be/lSPfAoJHtOs YouTube] [https://plus.google.com/events/ceuieen0d4vkmvvrftblsrjrgu4 Google+]<br />
|-<br />
|2015-03-10 || E. Long || Spectator Tagging Workshop || Tensor Polarized Deuteron Experiments [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pptx pptx]<br />
|-<br />
|2014-11-17 || E. Long || HiX Workshop || Overview of Spin Structure at Large x [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pptx pptx]<br />
|-<br />
|2014-09-13 || E. Long || QCD Town Hall Meeting || Tensor Spin Observables [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.ppt ppt]<br />
|-<br />
|2014-09-12 || E. Long || Juniata College Colloquium || Understanding the Structure of Nucleons [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata-Seminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata_Seminar-ELong.pptx pptx]<br />
|-<br />
|2014-08-12 || E. Long || Gordon Conference || Probing Nuclear Structure through Electron Scattering from Tensor Polarized Targets [http://nuclear.unh.edu/~elong/talks/2014-08-12-ELong-GRC.pdf pdf]<br />
|- <br />
|2014-06-06 || E. Long || Hall C Collab. Meeting || Probing Short Range Structure Through the Tensor Asymmetry Azz (TAzz) at x>1 [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pptx pptx] <br />
|-<br />
|2014-04-21 || Z. Abbas || UNH URC || Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/~elong/talks/2014-04-23-URC-Zain.pptx pptx]<br />
|-<br />
|2014-03-11 || E. Long || Tensor Workshop || Tensor Asymmetry Azz at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2014-03-11-ELong-TensorWorkshop.pdf pdf] [http://www.jlab.org/conferences/tensor2014/tues-am/ELong-TensorWorkshop.pptx pptx] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || The Deuteron Polarized Tensor Structure Function b1 [http://www.jlab.org/conferences/tensor2014/mon-am/slifer.pdf pdf] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || Tensor Spin Observables Workshop Welcome [http://www.jlab.org/conferences/tensor2014/mon-am/tensor_workshop_welcome.ppt ppt] <br />
|- <br />
|2014-03-10 - 2014-03-12 || Multiple || Tensor Workshop || [[Image:2014-03-18-TSOWorkshop.jpg]] [http://www.jlab.org/conferences/tensor2014/ Tensor Polarized Spin Observables Workshop] <br />
|- <br />
|2014-01-24 || E. Long || Uni. of Manitoba Seminar || Building the Bridge Between Partons and Nulei [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pptx pptx] <br />
|- <br />
|2013-12-14 || E. Long || Hall A Collab. Meeting || E08-005: Ay0 in Quasi-Elastic 3He(e,e'n) Scattering [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pptx pptx] <br />
|}<br />
<br />
=Technical Notes and Theses=<br />
*[http://twist.phys.virginia.edu/documents.html UVa Polarized Target Technical Resource Page]<br />
*[https://www.unhlonglab.com/technical-notes UNH Long Lab Technical Notes]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="125pt" | '''Author''' <br />
| width="125pt" | '''Type''' <br />
| width="630pt" | '''Title''' <br />
|- <br />
|2018-03 || UNH NPG Target Group || Operating Procedures || UNH DNP Cool-Down Procedures [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit# (Google Drive)] <br />
|-<br />
|2015-02-11 || P. Sieg || School Report|| Effects of Temperature on Carbon Resistors [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.pdf (pdf)] [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.docx (docx)] [https://docs.google.com/document/d/1TJKjWPNV1Y7o2zKqK2G1NmIff5R7Q_xZ1qXsxEAE5EU/edit (Google Drive)] <br />
|-<br />
|2014-09-30 || Z. Abbas || URA Report|| Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain_report.tgz (tgz)] <br />
|-<br />
|2014-03-11 || Z. Abbas || URA Application|| Low Temperature Thermometery for Cryogenically Cooled Solid, Spin Polarized Ammonia Target [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain.tgz (tgz)] <br />
|-<br />
|2013-05-24 || E. Long || b1 || Diluting Asymmetries in Extracting b1 from a Measurement of Azz [http://nuclear.unh.edu/~elong/analysis_files/2013-05-24/b1_extra_asyms.pdf (pdf)]<br />
|-<br />
|2013-05-16 || E. Long || b1 || Rates and Systematic Uncertainty Calculations for a Measurement of Azz (JLAB-TN-13-029) [http://nuclear.unh.edu/~elong/analysis_files/2013-05-16/Azz_error.pdf (pdf)]<br />
|-<br />
|2011-03-14 ||T. Bielarski|| Ind. Study || Analysis of Deuteron Polarization for the EG4 Experiment [http://nuclear.unh.edu/dnp_lab/2011_Bielarski_Trevor_795.pdf (pdf)]<br />
|-<br />
|2011-05-20 ||J. Donaghy|| Senior Thesis ||Construction of an NMR Polarimeter for Dynamically Polarized Nuclear Targets [http://nuclear.unh.edu/dnp_lab/qmeter_Donaghy_Thesis.pdf (pdf)] <br />
|-<br />
|2010-10-06 ||J. Donaghy|| URA Application|| Nuclear Magnetic Resonance Polarimetry for DNP Target [http://nuclear.unh.edu/dnp_lab/URA_application_Donaghy_NMR_2010.pdf (pdf)]<br />
|}<br />
<br />
=Required Safety Training=<br />
{|border=1 <br />
| width="300pt" | '''Title''' <br />
| width="225pt" | '''Method''' <br />
|- <br />
|Lab OSP || [http://nuclear.unh.edu/~elong/talks/Demeritt%20103.pdf Read and sign physical copy in lab]<br />
|-<br />
|Cryogenic Liquid Safety || Administered on Blackboard by EH&S<br />
|-<br />
|Magnet Safety Training || Administered on Blackboard by EH&S<br />
|-<br />
|Laboratory and Chemical Safety Training || Administered on Blackboard by EH&S<br />
|}<br />
<br />
[https://hallaweb.jlab.org/wiki/index.php/Solid_Polarized_Target g2p Solid Polarized Target Documents]<br />
<br />
[Shift Workers Documentation]<br />
<br />
=Images= <br />
* [http://www.flickr.com/photos/100401641@N08/ unhpoltarg Flickr]<br />
<br />
=Collaboration Meeting Minutes=<br />
* [[UNH DNP Collaboration Weekly Meeting Minutes]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=Comsol_Modeling&diff=6385Comsol Modeling2018-06-26T12:51:34Z<p>Nathaly: Created page with "We have developed a 4He evaporation fridge, which is used to achieve temperatures of 1K. The computational model of the Fridge is being done in collaboration with the Universi..."</p>
<hr />
<div>We have developed a 4He evaporation fridge, which is used to achieve temperatures of 1K. The computational model of the Fridge is being done in collaboration with the Universidad Técnica Federico Santa María in Chile. Bellow, the updates of the study are listed.<br />
<br />
* [http://nuclear.unh.edu/personal_pages/nathaly/comsol/CryoFridge_UNH1.pdf Update May 2018]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=UNH_DNP&diff=6384UNH DNP2018-06-26T12:44:19Z<p>Nathaly: /* Cryogenic System */</p>
<hr />
<div>=Lab How-To/Info=<br />
*[http://www.unhlonglab.com Long Lab Website]<br />
*[https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o UNH DNP Cool-Down Procedures ]<br />
*[https://docs.google.com/spreadsheets/d/1_nw6j2RSCpUTscSoS7oh7ERnyFm4OvxX0grtTq48nOE/edit#gid=1514387755 The DNP Master Spreadsheet]<br />
*[http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.pdf Magnet Operating Procedure] ([http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.tex .tex source])<br />
* [[DNP GPIB Addresses]]<br />
* [[Oven Operations]]<br />
* [[Running DNP LabView DAQ]]<br />
* [[Helium 4 Vapor Pressure]]<br />
* [[Vacuum Pumps]]<br />
* [[Vacuum Gauges]]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/DP_190_guide.pdf Epoxy DP-190 Gray]<br />
*AMI Magnet cheatsheet [http://nuclear.unh.edu/~slifer/faq/ami.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ami.tex tex]<br />
*Pfeiffer DUO 65 roughing pump cheatsheet [http://nuclear.unh.edu/~slifer/faq/duo_65.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/duo_65.tex tex]<br />
*Tripod and Chaindrop [http://nuclear.unh.edu/~slifer/faq/chaindrop.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ch.tgz tex]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Indium_Seals.pdf Indium Seals]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Vacuum_practices.pdf General Good Vacuum Practices]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Shells_Design.pdf Design and Construction of the Shells for the Fridge]<br />
*[[Cryogen Liquid Level Monitors]]<br />
<br />
=Polarization Calculation=<br />
[http://nuclear.unh.edu/~ryan/polcalc.php Ryan's TE Polarization and Calibration Calculator]<br />
<br />
=Experiment Analysis in Progress= <br />
* [https://hallaweb.jlab.org/wiki/index.php/G2p The Proton Spin Structure Function g2p] <br />
<br />
* [https://clasweb.jlab.org/rungroups/eg4/wiki/index.php/Main_Page EG4: The GDH Sum Rule and the Proton Spin Structure Function g1p] <br />
<br />
* [http://hallaweb.jlab.org/experiment/E05-102/ Quasi-Elastic Electron Scattering from 3He]<br />
<br />
=Approved Experiments= <br />
* [https://hallcweb.jlab.org/wiki/index.php/B1 The Deuteron Tensor Structure Function b1] (C1 approved)<br />
* [https://hallcweb.jlab.org/wiki/index.php/Azz Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries] (C1 approved)<br />
<br />
=Cryogenic System=<br />
* [[Comsol Modeling]]<br />
<br />
=Target Cool Downs= <br />
{|border=1 <br />
| width="150pt" | '''Dates''' <br />
| width="400pt" | '''Purpose''' <br />
|- <br />
|2018-04-10 || [[2018-04-10 Cool Down Analysis | Cool Down Analysis ]] <br />
|- <br />
|2018-03-15 || [[2018-03-09 Cool Down Analysis | First Vertical fridge cool-down]] <br />
|- <br />
|2015-09-22 to 2015-09-26 || [[2015-09 Cool Down Analysis | First fridge cool-down with LHe, Attempted 4.2K NMR]] <br />
|- <br />
|2015-07-30 to 2015-08-21 || [[2015-07 to 2015-08 Cool Downs | Fridge cool-downs with LN2]] <br />
|- <br />
|2014-01-06 to 2014-01-17 || [[2014-01 Cool Down Analysis | First magnet cool-down, magnetic field map]] <br />
|- <br />
|}<br />
<br />
=Talks and Presentations= <br />
*[https://www.unhlonglab.com/presentations-and-posters UNH Long Lab Presentations and Posters]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="75pt" | '''Presenter''' <br />
| width="150pt" | '''Location''' <br />
| width="400pt" | '''Title''' <br />
|-<br />
|2016-05-16 || R. Zielinski || JLab RC Workshop || Systematic error analysis of the Mo and Tsai radiative corrections scheme at low Q2 [http://nuclear.unh.edu/~ryan/Doc/JLAB_RC.pdf pdf] <br />
|-<br />
|2015-07-08 || E. Long || PAC43 || Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pptx pptx]<br />
|-<br />
|2015-07-02 || R. Zielinski || Chiral Dynamics Workshop|| Overview of the g2p experiment [http://nuclear.unh.edu/~ryan/Doc/JSTF-2015-Zielinski.pdf pdf] <br />
|-<br />
|-<br />
|2015-05-22 || E. Long || CIPANP || Spin Structure at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2015-05-22-ELong-CIPANP.pdf pdf]<br />
|-<br />
|2015-04-21 || E. Long || GWU Colloquium || Probing Nucleons With Polarized Targets [http://nuclear.unh.edu/~elong/talks/2015-04-21-ELong-GWU.pdf pdf]<br />
|-<br />
|2015-03-12 || E. Long || UCA Colloquium || Understanding the Nature of Normal Matter [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pptx pptx] [https://youtu.be/lSPfAoJHtOs YouTube] [https://plus.google.com/events/ceuieen0d4vkmvvrftblsrjrgu4 Google+]<br />
|-<br />
|2015-03-10 || E. Long || Spectator Tagging Workshop || Tensor Polarized Deuteron Experiments [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pptx pptx]<br />
|-<br />
|2014-11-17 || E. Long || HiX Workshop || Overview of Spin Structure at Large x [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pptx pptx]<br />
|-<br />
|2014-09-13 || E. Long || QCD Town Hall Meeting || Tensor Spin Observables [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.ppt ppt]<br />
|-<br />
|2014-09-12 || E. Long || Juniata College Colloquium || Understanding the Structure of Nucleons [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata-Seminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata_Seminar-ELong.pptx pptx]<br />
|-<br />
|2014-08-12 || E. Long || Gordon Conference || Probing Nuclear Structure through Electron Scattering from Tensor Polarized Targets [http://nuclear.unh.edu/~elong/talks/2014-08-12-ELong-GRC.pdf pdf]<br />
|- <br />
|2014-06-06 || E. Long || Hall C Collab. Meeting || Probing Short Range Structure Through the Tensor Asymmetry Azz (TAzz) at x>1 [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pptx pptx] <br />
|-<br />
|2014-04-21 || Z. Abbas || UNH URC || Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/~elong/talks/2014-04-23-URC-Zain.pptx pptx]<br />
|-<br />
|2014-03-11 || E. Long || Tensor Workshop || Tensor Asymmetry Azz at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2014-03-11-ELong-TensorWorkshop.pdf pdf] [http://www.jlab.org/conferences/tensor2014/tues-am/ELong-TensorWorkshop.pptx pptx] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || The Deuteron Polarized Tensor Structure Function b1 [http://www.jlab.org/conferences/tensor2014/mon-am/slifer.pdf pdf] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || Tensor Spin Observables Workshop Welcome [http://www.jlab.org/conferences/tensor2014/mon-am/tensor_workshop_welcome.ppt ppt] <br />
|- <br />
|2014-03-10 - 2014-03-12 || Multiple || Tensor Workshop || [[Image:2014-03-18-TSOWorkshop.jpg]] [http://www.jlab.org/conferences/tensor2014/ Tensor Polarized Spin Observables Workshop] <br />
|- <br />
|2014-01-24 || E. Long || Uni. of Manitoba Seminar || Building the Bridge Between Partons and Nulei [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pptx pptx] <br />
|- <br />
|2013-12-14 || E. Long || Hall A Collab. Meeting || E08-005: Ay0 in Quasi-Elastic 3He(e,e'n) Scattering [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pptx pptx] <br />
|}<br />
<br />
=Technical Notes and Theses=<br />
*[http://twist.phys.virginia.edu/documents.html UVa Polarized Target Technical Resource Page]<br />
*[https://www.unhlonglab.com/technical-notes UNH Long Lab Technical Notes]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="125pt" | '''Author''' <br />
| width="125pt" | '''Type''' <br />
| width="630pt" | '''Title''' <br />
|- <br />
|2018-03 || UNH NPG Target Group || Operating Procedures || UNH DNP Cool-Down Procedures [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit# (Google Drive)] <br />
|-<br />
|2015-02-11 || P. Sieg || School Report|| Effects of Temperature on Carbon Resistors [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.pdf (pdf)] [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.docx (docx)] [https://docs.google.com/document/d/1TJKjWPNV1Y7o2zKqK2G1NmIff5R7Q_xZ1qXsxEAE5EU/edit (Google Drive)] <br />
|-<br />
|2014-09-30 || Z. Abbas || URA Report|| Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain_report.tgz (tgz)] <br />
|-<br />
|2014-03-11 || Z. Abbas || URA Application|| Low Temperature Thermometery for Cryogenically Cooled Solid, Spin Polarized Ammonia Target [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain.tgz (tgz)] <br />
|-<br />
|2013-05-24 || E. Long || b1 || Diluting Asymmetries in Extracting b1 from a Measurement of Azz [http://nuclear.unh.edu/~elong/analysis_files/2013-05-24/b1_extra_asyms.pdf (pdf)]<br />
|-<br />
|2013-05-16 || E. Long || b1 || Rates and Systematic Uncertainty Calculations for a Measurement of Azz (JLAB-TN-13-029) [http://nuclear.unh.edu/~elong/analysis_files/2013-05-16/Azz_error.pdf (pdf)]<br />
|-<br />
|2011-03-14 ||T. Bielarski|| Ind. Study || Analysis of Deuteron Polarization for the EG4 Experiment [http://nuclear.unh.edu/dnp_lab/2011_Bielarski_Trevor_795.pdf (pdf)]<br />
|-<br />
|2011-05-20 ||J. Donaghy|| Senior Thesis ||Construction of an NMR Polarimeter for Dynamically Polarized Nuclear Targets [http://nuclear.unh.edu/dnp_lab/qmeter_Donaghy_Thesis.pdf (pdf)] <br />
|-<br />
|2010-10-06 ||J. Donaghy|| URA Application|| Nuclear Magnetic Resonance Polarimetry for DNP Target [http://nuclear.unh.edu/dnp_lab/URA_application_Donaghy_NMR_2010.pdf (pdf)]<br />
|}<br />
<br />
=Required Safety Training=<br />
{|border=1 <br />
| width="300pt" | '''Title''' <br />
| width="225pt" | '''Method''' <br />
|- <br />
|Lab OSP || [http://nuclear.unh.edu/~elong/talks/Demeritt%20103.pdf Read and sign physical copy in lab]<br />
|-<br />
|Cryogenic Liquid Safety || Administered on Blackboard by EH&S<br />
|-<br />
|Magnet Safety Training || Administered on Blackboard by EH&S<br />
|-<br />
|Laboratory and Chemical Safety Training || Administered on Blackboard by EH&S<br />
|}<br />
<br />
[https://hallaweb.jlab.org/wiki/index.php/Solid_Polarized_Target g2p Solid Polarized Target Documents]<br />
<br />
=Images= <br />
* [http://www.flickr.com/photos/100401641@N08/ unhpoltarg Flickr]<br />
<br />
=Collaboration Meeting Minutes=<br />
* [[UNH DNP Collaboration Weekly Meeting Minutes]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=UNH_DNP&diff=6383UNH DNP2018-06-26T12:35:24Z<p>Nathaly: </p>
<hr />
<div>=Lab How-To/Info=<br />
*[http://www.unhlonglab.com Long Lab Website]<br />
*[https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o UNH DNP Cool-Down Procedures ]<br />
*[https://docs.google.com/spreadsheets/d/1_nw6j2RSCpUTscSoS7oh7ERnyFm4OvxX0grtTq48nOE/edit#gid=1514387755 The DNP Master Spreadsheet]<br />
*[http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.pdf Magnet Operating Procedure] ([http://nuclear.unh.edu/~ryan/Doc/Magnet_Ramp.tex .tex source])<br />
* [[DNP GPIB Addresses]]<br />
* [[Oven Operations]]<br />
* [[Running DNP LabView DAQ]]<br />
* [[Helium 4 Vapor Pressure]]<br />
* [[Vacuum Pumps]]<br />
* [[Vacuum Gauges]]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/DP_190_guide.pdf Epoxy DP-190 Gray]<br />
*AMI Magnet cheatsheet [http://nuclear.unh.edu/~slifer/faq/ami.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ami.tex tex]<br />
*Pfeiffer DUO 65 roughing pump cheatsheet [http://nuclear.unh.edu/~slifer/faq/duo_65.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/duo_65.tex tex]<br />
*Tripod and Chaindrop [http://nuclear.unh.edu/~slifer/faq/chaindrop.pdf pdf] [http://nuclear.unh.edu/~slifer/faq/ch.tgz tex]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Indium_Seals.pdf Indium Seals]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Vacuum_practices.pdf General Good Vacuum Practices]<br />
*[http://nuclear.unh.edu/personal_pages/nathaly/manuals/Shells_Design.pdf Design and Construction of the Shells for the Fridge]<br />
*[[Cryogen Liquid Level Monitors]]<br />
<br />
=Polarization Calculation=<br />
[http://nuclear.unh.edu/~ryan/polcalc.php Ryan's TE Polarization and Calibration Calculator]<br />
<br />
=Experiment Analysis in Progress= <br />
* [https://hallaweb.jlab.org/wiki/index.php/G2p The Proton Spin Structure Function g2p] <br />
<br />
* [https://clasweb.jlab.org/rungroups/eg4/wiki/index.php/Main_Page EG4: The GDH Sum Rule and the Proton Spin Structure Function g1p] <br />
<br />
* [http://hallaweb.jlab.org/experiment/E05-102/ Quasi-Elastic Electron Scattering from 3He]<br />
<br />
=Approved Experiments= <br />
* [https://hallcweb.jlab.org/wiki/index.php/B1 The Deuteron Tensor Structure Function b1] (C1 approved)<br />
* [https://hallcweb.jlab.org/wiki/index.php/Azz Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries] (C1 approved)<br />
<br />
=Cryogenic System=<br />
<br />
<br />
<br />
=Target Cool Downs= <br />
{|border=1 <br />
| width="150pt" | '''Dates''' <br />
| width="400pt" | '''Purpose''' <br />
|- <br />
|2018-04-10 || [[2018-04-10 Cool Down Analysis | Cool Down Analysis ]] <br />
|- <br />
|2018-03-15 || [[2018-03-09 Cool Down Analysis | First Vertical fridge cool-down]] <br />
|- <br />
|2015-09-22 to 2015-09-26 || [[2015-09 Cool Down Analysis | First fridge cool-down with LHe, Attempted 4.2K NMR]] <br />
|- <br />
|2015-07-30 to 2015-08-21 || [[2015-07 to 2015-08 Cool Downs | Fridge cool-downs with LN2]] <br />
|- <br />
|2014-01-06 to 2014-01-17 || [[2014-01 Cool Down Analysis | First magnet cool-down, magnetic field map]] <br />
|- <br />
|}<br />
<br />
=Talks and Presentations= <br />
*[https://www.unhlonglab.com/presentations-and-posters UNH Long Lab Presentations and Posters]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="75pt" | '''Presenter''' <br />
| width="150pt" | '''Location''' <br />
| width="400pt" | '''Title''' <br />
|-<br />
|2016-05-16 || R. Zielinski || JLab RC Workshop || Systematic error analysis of the Mo and Tsai radiative corrections scheme at low Q2 [http://nuclear.unh.edu/~ryan/Doc/JLAB_RC.pdf pdf] <br />
|-<br />
|2015-07-08 || E. Long || PAC43 || Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-07-08-ELong-PAC43.pptx pptx]<br />
|-<br />
|2015-07-02 || R. Zielinski || Chiral Dynamics Workshop|| Overview of the g2p experiment [http://nuclear.unh.edu/~ryan/Doc/JSTF-2015-Zielinski.pdf pdf] <br />
|-<br />
|-<br />
|2015-05-22 || E. Long || CIPANP || Spin Structure at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2015-05-22-ELong-CIPANP.pdf pdf]<br />
|-<br />
|2015-04-21 || E. Long || GWU Colloquium || Probing Nucleons With Polarized Targets [http://nuclear.unh.edu/~elong/talks/2015-04-21-ELong-GWU.pdf pdf]<br />
|-<br />
|2015-03-12 || E. Long || UCA Colloquium || Understanding the Nature of Normal Matter [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-12-UCASeminar-ELong.pptx pptx] [https://youtu.be/lSPfAoJHtOs YouTube] [https://plus.google.com/events/ceuieen0d4vkmvvrftblsrjrgu4 Google+]<br />
|-<br />
|2015-03-10 || E. Long || Spectator Tagging Workshop || Tensor Polarized Deuteron Experiments [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2015-03-10-SpectatorTagging-ELong.pptx pptx]<br />
|-<br />
|2014-11-17 || E. Long || HiX Workshop || Overview of Spin Structure at Large x [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-11-17-HiX-ELong.pptx pptx]<br />
|-<br />
|2014-09-13 || E. Long || QCD Town Hall Meeting || Tensor Spin Observables [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-13-DNPTownHall-ELong.ppt ppt]<br />
|-<br />
|2014-09-12 || E. Long || Juniata College Colloquium || Understanding the Structure of Nucleons [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata-Seminar-ELong.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-09-12-Juniata_Seminar-ELong.pptx pptx]<br />
|-<br />
|2014-08-12 || E. Long || Gordon Conference || Probing Nuclear Structure through Electron Scattering from Tensor Polarized Targets [http://nuclear.unh.edu/~elong/talks/2014-08-12-ELong-GRC.pdf pdf]<br />
|- <br />
|2014-06-06 || E. Long || Hall C Collab. Meeting || Probing Short Range Structure Through the Tensor Asymmetry Azz (TAzz) at x>1 [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-06-06-ELong-HallCCollab.pptx pptx] <br />
|-<br />
|2014-04-21 || Z. Abbas || UNH URC || Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/~elong/talks/2014-04-23-URC-Zain.pptx pptx]<br />
|-<br />
|2014-03-11 || E. Long || Tensor Workshop || Tensor Asymmetry Azz at Jefferson Lab [http://nuclear.unh.edu/~elong/talks/2014-03-11-ELong-TensorWorkshop.pdf pdf] [http://www.jlab.org/conferences/tensor2014/tues-am/ELong-TensorWorkshop.pptx pptx] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || The Deuteron Polarized Tensor Structure Function b1 [http://www.jlab.org/conferences/tensor2014/mon-am/slifer.pdf pdf] <br />
|- <br />
|2014-03-10 || K. Slifer || Tensor Workshop || Tensor Spin Observables Workshop Welcome [http://www.jlab.org/conferences/tensor2014/mon-am/tensor_workshop_welcome.ppt ppt] <br />
|- <br />
|2014-03-10 - 2014-03-12 || Multiple || Tensor Workshop || [[Image:2014-03-18-TSOWorkshop.jpg]] [http://www.jlab.org/conferences/tensor2014/ Tensor Polarized Spin Observables Workshop] <br />
|- <br />
|2014-01-24 || E. Long || Uni. of Manitoba Seminar || Building the Bridge Between Partons and Nulei [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2014-01-24-ELong-PYS.pptx pptx] <br />
|- <br />
|2013-12-14 || E. Long || Hall A Collab. Meeting || E08-005: Ay0 in Quasi-Elastic 3He(e,e'n) Scattering [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pdf pdf] [http://nuclear.unh.edu/~elong/talks/2013-12-17-ELong-hallacollab.pptx pptx] <br />
|}<br />
<br />
=Technical Notes and Theses=<br />
*[http://twist.phys.virginia.edu/documents.html UVa Polarized Target Technical Resource Page]<br />
*[https://www.unhlonglab.com/technical-notes UNH Long Lab Technical Notes]<br />
<br />
{|border=1 <br />
| width="75pt" | '''Date''' <br />
| width="125pt" | '''Author''' <br />
| width="125pt" | '''Type''' <br />
| width="630pt" | '''Title''' <br />
|- <br />
|2018-03 || UNH NPG Target Group || Operating Procedures || UNH DNP Cool-Down Procedures [https://docs.google.com/document/d/1ecbCTTtgoKBhofpUS1OsZVxOxAfA9XxAiUHVvF13A3o/edit# (Google Drive)] <br />
|-<br />
|2015-02-11 || P. Sieg || School Report|| Effects of Temperature on Carbon Resistors [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.pdf (pdf)] [http://nuclear.unh.edu/~elong/talks/psieg2014-02-11.docx (docx)] [https://docs.google.com/document/d/1TJKjWPNV1Y7o2zKqK2G1NmIff5R7Q_xZ1qXsxEAE5EU/edit (Google Drive)] <br />
|-<br />
|2014-09-30 || Z. Abbas || URA Report|| Understanding Thermometry at Low Temperature [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain_report.tgz (tgz)] <br />
|-<br />
|2014-03-11 || Z. Abbas || URA Application|| Low Temperature Thermometery for Cryogenically Cooled Solid, Spin Polarized Ammonia Target [http://nuclear.unh.edu/dnp_lab/2014_abbas_zain.tgz (tgz)] <br />
|-<br />
|2013-05-24 || E. Long || b1 || Diluting Asymmetries in Extracting b1 from a Measurement of Azz [http://nuclear.unh.edu/~elong/analysis_files/2013-05-24/b1_extra_asyms.pdf (pdf)]<br />
|-<br />
|2013-05-16 || E. Long || b1 || Rates and Systematic Uncertainty Calculations for a Measurement of Azz (JLAB-TN-13-029) [http://nuclear.unh.edu/~elong/analysis_files/2013-05-16/Azz_error.pdf (pdf)]<br />
|-<br />
|2011-03-14 ||T. Bielarski|| Ind. Study || Analysis of Deuteron Polarization for the EG4 Experiment [http://nuclear.unh.edu/dnp_lab/2011_Bielarski_Trevor_795.pdf (pdf)]<br />
|-<br />
|2011-05-20 ||J. Donaghy|| Senior Thesis ||Construction of an NMR Polarimeter for Dynamically Polarized Nuclear Targets [http://nuclear.unh.edu/dnp_lab/qmeter_Donaghy_Thesis.pdf (pdf)] <br />
|-<br />
|2010-10-06 ||J. Donaghy|| URA Application|| Nuclear Magnetic Resonance Polarimetry for DNP Target [http://nuclear.unh.edu/dnp_lab/URA_application_Donaghy_NMR_2010.pdf (pdf)]<br />
|}<br />
<br />
=Required Safety Training=<br />
{|border=1 <br />
| width="300pt" | '''Title''' <br />
| width="225pt" | '''Method''' <br />
|- <br />
|Lab OSP || [http://nuclear.unh.edu/~elong/talks/Demeritt%20103.pdf Read and sign physical copy in lab]<br />
|-<br />
|Cryogenic Liquid Safety || Administered on Blackboard by EH&S<br />
|-<br />
|Magnet Safety Training || Administered on Blackboard by EH&S<br />
|-<br />
|Laboratory and Chemical Safety Training || Administered on Blackboard by EH&S<br />
|}<br />
<br />
[https://hallaweb.jlab.org/wiki/index.php/Solid_Polarized_Target g2p Solid Polarized Target Documents]<br />
<br />
=Images= <br />
* [http://www.flickr.com/photos/100401641@N08/ unhpoltarg Flickr]<br />
<br />
=Collaboration Meeting Minutes=<br />
* [[UNH DNP Collaboration Weekly Meeting Minutes]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63772018-04-10 Cool Down Analysis2018-04-23T16:01:26Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|-<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
<br />
'''Note: ''' Due to connection problems the separator flow wasn't reading all the time. The separator was woking from 10:30 am to 10:30 pm, which means that any 0 reading in the separator flow during that time is a false reading.<br />
<br />
'''Magnet Temperatures and Helium lost estimations'''<br />
<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
<br />
'''Fridge Temperatures during the complete day'''<br />
<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
<br />
'''Fridge Temperatures during the cooling process'''<br />
<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
<br />
'''Fridge Temperatures when the nose was at 1.12 K '''<br />
<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
<br />
'''Fridge Temperatures when the nose was at 1.9 K'''<br />
<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
<br />
<br />
'''Target Temperatures during the complete day'''<br />
<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
<br />
'''CCS3 and Vapor Pressure measurements'''<br />
<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
<br />
'''CCS3 and Pumps Flows'''<br />
<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
<br />
<br />
'''Shells Pressure and CCSF1 in the Fridge'''<br />
<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63762018-04-10 Cool Down Analysis2018-04-23T16:00:49Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|-<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
<br />
'''Note: " Due to connection problems the separator flow wasn't reading all the time. The separator was woking from 10:30 am to 10:30 pm, which means that any 0 reading in the separator flow during that time is a false reading.<br />
<br />
'''Magnet Temperatures and Helium lost estimations'''<br />
<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
<br />
'''Fridge Temperatures during the complete day'''<br />
<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
<br />
'''Fridge Temperatures during the cooling process'''<br />
<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
<br />
'''Fridge Temperatures when the nose was at 1.12 K '''<br />
<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
<br />
'''Fridge Temperatures when the nose was at 1.9 K'''<br />
<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
<br />
<br />
'''Target Temperatures during the complete day'''<br />
<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
<br />
'''CCS3 and Vapor Pressure measurements'''<br />
<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
<br />
'''CCS3 and Pumps Flows'''<br />
<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
<br />
<br />
'''Shells Pressure and CCSF1 in the Fridge'''<br />
<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63752018-04-10 Cool Down Analysis2018-04-23T15:57:27Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|-<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
<br />
<br />
<br />
'''Magnet Temperatures and Helium lost estimations'''<br />
<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
<br />
""Fridge Temperatures during the complete day""<br />
<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
<br />
""Fridge Temperatures during the cooling process""<br />
<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
<br />
""Fridge Temperatures when the nose was at 1.12 K ""<br />
<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
<br />
""Fridge Temperatures when the nose was at 1.9 K ""<br />
<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
<br />
""Fridge Temperatures when the nose was at 1.9 K ""<br />
<br />
""Target Temperatures during the complete day""<br />
<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
<br />
""CCS3 and Vapor Pressure measurements""<br />
<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
<br />
""CCS3 and Pumps Flows""<br />
<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
<br />
<br />
""Shells Pressure and CCSF1 in the Fridge""<br />
<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63742018-04-10 Cool Down Analysis2018-04-23T15:52:23Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
<br />
<br />
<br />
'''Magnet Temperatures'''<br />
<br />
<br />
<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63732018-04-10 Cool Down Analysis2018-04-23T15:48:41Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
'''Magnet Temperatures'''<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63722018-04-10 Cool Down Analysis2018-04-23T15:47:06Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63712018-04-10 Cool Down Analysis2018-04-23T15:46:37Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
[[Image:04-12-2018 magnetT.jpg|frame|1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63702018-04-10 Cool Down Analysis2018-04-23T15:45:54Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
[[Image:04-12-2018 magnetT.jpg|frame|thumbnail||1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63692018-04-10 Cool Down Analysis2018-04-23T15:44:10Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
<br />
'''Magnet temperatures and Helium lost estimations.'''<br />
[[Image:04-12-2018 magnetT.jpg|frame|thumbnail||1000px]]<br />
'''Fridge Temperatures during the day.'''<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
'''Fridge Temperatures during the cooldownffrom Room Temperature'''<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
'''Fridge Temperatures at 1.2 K'''<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
'''Fridge Temperatures at 2 K and without the roots'''<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
<br />
'''Target Temperatures during the days'''<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63682018-04-10 Cool Down Analysis2018-04-23T15:41:17Z<p>Nathaly: </p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
[[Image:04-12-2018 magnetT.jpg|frame|thumbnail||1000px]|Magnet temperatures and Helium lost estimations.]<br />
<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63672018-04-10 Cool Down Analysis2018-04-23T15:39:16Z<p>Nathaly: </p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
[[Image:04-12-2018 magnetT.jpg|frame|thumbnail|100px|Magnet temperatures and Helium lost estimations.]]<br />
<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63662018-04-10 Cool Down Analysis2018-04-23T15:38:41Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|<br />
! 10 pm - 12 am<br />
| System off.<br />
| The needles valve were close and the separator pump was off. <br />
|}<br />
<br />
[[Image:04-12-2018 magnetT.jpg|frame|thumbnail|1000px|Magnet temperatures and Helium lost estimations.]]<br />
<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12 pressure shells.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12_pressure_shells.jpg&diff=6365File:04-12 pressure shells.jpg2018-04-23T15:35:33Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63642018-04-10 Cool Down Analysis2018-04-23T15:33:12Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|}<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.jpg|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
[[Image:04-12-2018 targetgoodT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
[[Image:04-12-2018 targetflowT.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12_fridge_TET.jpg&diff=6363File:04-12 fridge TET.jpg2018-04-23T15:32:32Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12-2018_targetflowT.jpg&diff=6362File:04-12-2018 targetflowT.jpg2018-04-23T15:31:36Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12-2018_targetgoodT.jpg&diff=6361File:04-12-2018 targetgoodT.jpg2018-04-23T15:30:52Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63602018-04-10 Cool Down Analysis2018-04-23T15:30:20Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|}<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
[[Image:04-12 fridge TET.png|1000px]]<br />
[[Image:04-12 targetT.jpg|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12_targetT.jpg&diff=6359File:04-12 targetT.jpg2018-04-23T15:29:30Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12-2018_targetT.png&diff=6358File:04-12-2018 targetT.png2018-04-23T15:27:58Z<p>Nathaly: Nathaly uploaded a new version of &quot;File:04-12-2018 targetT.png&quot;</p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12-2018_targetT.png&diff=6357File:04-12-2018 targetT.png2018-04-23T15:27:21Z<p>Nathaly: Nathaly uploaded a new version of &quot;File:04-12-2018 targetT.png&quot;</p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12-2018_targetT.png&diff=6356File:04-12-2018 targetT.png2018-04-23T15:26:35Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12_fridge_TET.png&diff=6355File:04-12 fridge TET.png2018-04-23T15:25:26Z<p>Nathaly: </p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=File:04-12_fridge_1KT.png&diff=6354File:04-12 fridge 1KT.png2018-04-23T15:23:20Z<p>Nathaly: Nathaly uploaded a new version of &quot;File:04-12 fridge 1KT.png&quot;</p>
<hr />
<div></div>Nathalyhttps://nuclear.unh.edu/wiki/index.php?title=2018-04-10_Cool_Down_Analysis&diff=63532018-04-10 Cool Down Analysis2018-04-23T15:22:42Z<p>Nathaly: /* 04/12/2018 Fridge Cooldown */</p>
<hr />
<div><br />
= 04/12/2018 Fridge Cooldown =<br />
<br />
The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:<br />
<br />
{| class="wikitable"<br />
|+ The table's caption<br />
! Time <br />
! Process<br />
!Comment<br />
|-<br />
! 10:30 am - 2 pm<br />
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm<br />
|-<br />
! 2 pm - 5 pm <br />
| Nose cooldown to 1.2 K.<br />
| The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly. <br />
|-<br />
! 5 pm - 10 pm<br />
|Thermal equilibrium conditions ~1.9 K.<br />
| The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.<br />
|}<br />
[[Image:04-12-2018 magnetT.jpg|1000px]]<br />
[[Image:04-12 fridgeT.png|1000px]]<br />
[[Image:04-12 fridge coolingT.png|900px]]<br />
[[Image:04-12 fridge 1KT.png|1000px]]<br />
<br />
= 04/10/2018 Magnet Precool with LN2 =<br />
[[Image:04-10-2018 magnet precool magnetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]<br />
[[Image:04-10-2018 magnet precool targetT.png|500px]]<br />
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]</div>Nathaly