UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20100501

2010/05/01

15:52 Fill N2 cold trap full. Isolate pumping station at IVC pressure 7.4E-6 mbar.
16:02 IVC He background 2.4E-9 cc/s
16:06 Evacuate clear hose to IGH rear panel and fill with He gas
16:08 Pump He bath
Stop pumping on the bath at P2 = 1 mbar
Fill the bath with He gas and leak check
16:27 IVC leak: 8E-9 cc/s
16:33 Evacuate 1K pot, close IVC, turn off pumping station and leak checker
Put in IVC 2.5 mbar N2 exchange gas (was 25 mbar in the NW40 hose)
17:04 Start transfer liquid N2
19:13 Stop transfer liquid N2, pump mixture into dump