UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20220102

2022/01/02 (Sunday)

Previous Day

  • Lab in-personnel: Matt
Status Run 75 in progress
Setup Tower Faces 5/3/2 → Cables 2/1/3 → nothing/diverter_board/nothing → DCRC55(1)/DCRC50(3)/DCRCx(4)
Lead shield in place. Am Source y = 2.07 -2.02 mm
1540 Goldman/Tower/MC(H35)/Coldplate = 49.2/101/38.5/214 mK, Still = 1.69±0.05 K / 0.130 mbar / 0 mW, G1/G2= 247/222 mbar, 1K Pot = 1.62 K / 18±1 mbar, MB = 27.3%.
1545 Do mini-IbIs on all channels.
Goldman temperature 50.85 mK 49.95 mK 47.60 mK 48.3 mK
QET bias (uA)
Channel Previous Previous Previous New
DCRC1pA 241 (0.94) 244 (0.89) 248.7 248.6
DCRC1pB 314 317 323 322.5
DCRC1pC 274 (0.95) 277 (0.84) 284.5 284.6
DCRC1pD 178 (0.79) 181 (0.59) 190.5 187.9
DCRC3pA 160 (0.91) 161 (0.59) 169.6 166.8
DCRC3pB 162 (1.04) 162 (0.66) 170.5 166.7
DCRC3pC 217 (0.98) 217 (0.94) 221.9 217.5
DCRC3pD - - - -
DCRC4pA 205 (0.90) 209 (0.90) 212.4 210.8
DCRC4pB 148 (0.93) 149 (0.81) 153.0 152.7
DCRC4pC 256 (0.97) 258 (0.91) 262.8 262.4
DCRC4pD 189 (0.90) 190 (0.73) 198.7 196.5

Note: number in parentheses is the dP/dI for that setting based on the following IbIs measurement

1643 Begin LHe transfer @ MB = 25.6%
1705 Fill LN2 cold trap bath
1715 End LHe transfer @ MB = 89.2%

Next Day