UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20130927

2013/09/27

1100 Filled LN2 coldtrap full.
1130 Begin evacuating IVC.
1700 Blowing out Nitrogen. Pressure in IVC 4.6E-6 mbar. Leak check with background rate at 8.6E-10 mbarl/s.
1801 Pump mixture to dump in preparation for throughput test. Leak test results in He leak rate of 1.7E-9 mbarl/s. No gross leak.
1840 Throughput test results in rate of 11 mbar/min. Leak rate during test did not change from 3.4E-9 mbarl/s. No sign of leak.
1901 Final leak check showed no increase from 3.4E-9 mbarl/s background rate when He gas was pumped into main bath. No gross leak detected. Gas was then pumped out of the main bath.
1910 Evacuate 1 K pot. Leave main bath to evacuate overnight.
2150 Commence cryocleaning mixture through nitrogen cold trap 1.
2250 Fill N2 cold trap full.