UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20180623

2018/06/23 (Saturday)

Previous Day

overnight: Tower temp stable. Tower near 200 mK overnight.
1252 Tower/MC/Coldplate = 121/133/185 mK, Still = 1.26 K / 0.030 mbar / 0.3 mW, G1/G2 = 185/177 mbar, 1K Pot = 1.47 K / 4.0 mbar. MB = 33.9%
1254 I still don't have LN2 room access even though I thought I solved this with Andrea a while ago. - Gina
1303 Start LHe transfer (MB = 32.5%)
1345 End LHe transfer (MB = 89.4%)
1504 Fill LN2 cold trap using 5L dewar.
1505 G1/G2 = 163/158 mbar and decreasing, tower = 118 mK and slowly decreasing. Open V14 for a couple seconds, until P1 ~ 200 mbar then close it. G1/G2 → 286/269 mbar. tower jumps to 150 mK, but then starts falling quickly back down.

Next Day