UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20230217

2023/02/17 (Friday)

Previous Day

* Lab in-personnel: Himangshu, Ping

Status Run 77 in progress.
Setup To Be Cable 2/1/3 → diverter/nothing/nothing → DCRC50(3)/DCRC55(1)/DCRCX(4)
1300 power cycle DCRC4
1325 Zoom call with Matt to look at the not transitioning Side1 channels
1329 Started LN2 refill
1334 Stopped filling LN2
Trying Ibis on all DCRCs
From IbIs with MC = 31 mK
SQUET Cable DCRC channel Detector channel SQUID Bias SQUID Lockpoint QET bias @ dP/dI = - uV Previous Run
ZC-74 1 DCRC1pC Side1pC -92.6 -3.98 no transition(feedback resistance low) 235
ZC-74 1 DCRC1pD Side1pF -97.9 -2.4 148 274
ZC-31 2 DCRC3pA Side1pE -98.1 -6.12 135 246
ZC-31 2 DCRC3pB Side1pB -87.6 -3.49 190 225
ZC-31 2 DCRC3pC Side1pD -44.4 -2.86 no transition 258
ZC-26 3 DCRC4pC Side1pA -83.7 -7 320 212
ZC-74 1 DCRC1pA Side2pC -95(copy) -2.5(copy) no transition
ZC-74 1 DCRC1pB Side2pF -100 -2.01 no transition
ZC-31 2 DCRC3pD Side2pE -89.1 -3.81 no transition
ZC-26 3 DCRC4pA Side2pB -83(copy) -5.91(copy) no response to change in QETbias
ZC-26 3 DCRC4pB Side2pA -83(copy) -5.91(copy) no response to change in QETbias
ZC-26 3 DCRC4pD Side2pD -93.1 1.56 no transition
1600 Tower(RoX)/Tower(U28)/MC(H35)/Coldplate = -/47.7/33/152 mK, Still(P1) = 1.14 K / 0.10 mbar / 0 mW, G1/G2 = 132/125 mbar, 1K Pot(P2) = 30° / 1.635 K / 22 mbar, MB = 57.7%
1621 Started taking 0V 2sided dataset. Forgot to set trigger. Donot see pulses by this time, implying He-film issue

Next Day