UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20210724

2021/07/24 (Saturday)

Previous Day

  • Lab in-personnel: Giulia
Status Run 74 in progress. First cooldown aftr IVC rebuild.
Tower thermometer is reading high, probably this is a thermometer problem and the actual temperature is much lower. High noise in some of the charge channels.
Setup: DIB1/2+acc → SL 41/43 → 3.2 MHz filters → cables 2/3 → nothing/Source_mover_board+HV_diverter_board → DCRC50(3)/55(1). Kepco 40V supplye → HV BNC. No lead/poly shield. Currently both DCRCs are on.
1115 Tower/MC/Coldplate = 85.6/35.2/ 193.6 mK, Still = 1.40 K / 0.08 mbar / 0 mW, G1/G2= 285.9/265.8 mbar, 1K Pot = 1.62 K / 20±1 mbar. MB = 65.6%.
1124 Fill LN2 cold trap bath.

Next Day