Difference between revisions of "2018-04-10 Cool Down Analysis"
From Nuclear Physics Group Documentation Pages
Jump to navigationJump to search| Line 25: | Line 25: | ||
| The needles valve were close and the separator pump was off. | | The needles valve were close and the separator pump was off. | ||
|} | |} | ||
| + | |||
| + | |||
| + | |||
'''Magnet Temperatures''' | '''Magnet Temperatures''' | ||
| + | |||
| + | |||
| + | |||
[[Image:04-12-2018 magnetT.jpg|1000px]] | [[Image:04-12-2018 magnetT.jpg|1000px]] | ||
[[Image:04-12 fridgeT.png|1000px]] | [[Image:04-12 fridgeT.png|1000px]] | ||
Revision as of 15:52, 23 April 2018
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:
| 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. | 10 pm - 12 am | System off. | The needles valve were close and the separator pump was off. |
Magnet Temperatures
04/10/2018 Magnet Precool with LN2
