View source for 2018-04-10 Cool Down Analysis


= 04/12/2018 Fridge Cooldown =

The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:

{| class="wikitable"
|+ The table's caption
! Time 
! Process
!Comment
|-
! 10:30 am - 2 pm
| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm
|-
! 2 pm - 5 pm 
| Nose cooldown to 1.2 K.
| 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. 
|-
! 5 pm - 10 pm
|Thermal equilibrium conditions ~1.9 K.
| 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.
|}
[[Image:04-12-2018 magnetT.jpg|1000px]]

= 04/10/2018 Magnet Precool with LN2 =
[[Image:04-10-2018 magnet precool magnetT.png|500px]]
[[Image:04-10-2018 magnet precool fridgeT.png|600px]]
[[Image:04-10-2018 magnet precool targetT.png|500px]]
[[Image:04-10-2018 magnet precool pressure shells.png|500px]]