UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20170702

2017/07/02 (Sunday)

Previous Day

Status Transferred LHe Friday. pumping out IVC with turbo pump.
1205 Lab = 22.7 C, 39% humidity
1209 MC(Tower)/Sorb/1K Pot = 5.01/8.6/6.6 K, Fridge(G1) = 593 mbar, MB = 40.7%. Turbo pressure = 2.5 μbar, IVC = 16 μbar.
1242 Start LHe transfer (MB = 40.4%)
1248 MC(Tower)/Sorb/1K Pot = 5.00/7.9/6.99 K, Fridge(G1) = 570 mbar, MB = 41.5%. Turbo pressure = 2.5 μbar. Recover meter is quite squeaky…
1302 MC(Tower)/Sorb/1K Pot = 4.97/6.9/5.4 K, Fridge(G1) = 524 mbar, MB = 63.7%. Turbo pressure = 1.4 μbar.
1308 MC(Tower)/Sorb/1K Pot = 4.94/6.9/5.4 K, Fridge(G1) = 480 mbar, MB = 78.1%. Turbo pressure = 1.0 μbar. Transfer is going quickly, decrease He cylinder pressure slightly.
1320 MC(Tower)/Sorb/1K Pot = 4.94/7.0/5.4 K, Fridge(G1) = 479 mbar, MB = 84.2%. Turbo pressure = 1.0 μbar.
1333 End LHe transfer (MB = 92.0%).
1335 MC(Tower)/Sorb/1K Pot = 4.97/6.9/5.3 K, Fridge(G1) = 530 mbar. Turbo pressure = 2.2 μbar. IVC = 8.6 μbar.
1335 Fill LN2 cold trap.

Next Day