2022/01/31 (Monday)
- 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 = 0.03 mm |
| 1335 | Goldman/Tower/MC(H35)/Coldplate = 41.8/72.8/34.3/185 mK, Still = 1.43 K / 0.110 mbar / 0 mW, G1/G2= 264/251 mbar, 1K Pot = 1.59 K / 11±1 mbar, MB = 64.1%. |
| 1340 | Fill LN2 cold trap bath. |
| 1435 | Check all the pins that should be connected to bias on the Side1-readout, Side2-HV board. Two of them seem to not be connected well (R36 and R42). |
| 1450 | Repair solder joints on R36 and R42 on the Side1-readout, Side-2 HV board. |
Current phonon settings shown below. We'll use the same Lockpoint and SQUIDbias for each detector channel after switching to HV. And possibly the same VGAGain values for each DCRC.
[/Equipment/Tower01/Settings/DCRC1/Phonon] VGAGain (multiplicative factor) = FLOAT[4] : [0] 5 [1] 5 [2] 2 [3] 5 ADCOffset (V) = FLOAT[4] : [0] 0.4 [1] 0.2 [2] 0.2 [3] 0 LockpointAdjust (mV) = FLOAT[4] : [0] -3.5 [1] -3.8 [2] -4 [3] -2.5 SQUIDBias (uA) = FLOAT[4] : [0] -80 [1] -95 [2] -91 [3] -102 QETBias (uA) = FLOAT[4] : [0] 239.9 [1] 283.5 [2] 275.3 [3] 199.9
[/Equipment/Tower01/Settings/DCRC3/Phonon] VGAGain (multiplicative factor) = FLOAT[4] : [0] 5 [1] 5 [2] 5 [3] 5 ADCOffset (V) = FLOAT[4] : [0] 0.4 [1] 0.3 [2] 0.2 [3] 0.5 LockpointAdjust (mV) = FLOAT[4] : [0] -3 [1] -3.4 [2] -2.9 [3] -3.4 SQUIDBias (uA) = FLOAT[4] : [0] -50 [1] -70 [2] -70 [3] -60 QETBias (uA) = FLOAT[4] : [0] 180.6 [1] 174.6 [2] 220.1 [3] 0
[/Equipment/Tower01/Settings/DCRC4/Phonon] VGAGain (multiplicative factor) = FLOAT[4] : [0] 2 [1] 3 [2] 3 [3] 3 ADCOffset (V) = FLOAT[4] : [0] 0.3 [1] 0.3 [2] 0.2 [3] 0.9 LockpointAdjust (mV) = FLOAT[4] : [0] -4 [1] -5.4 [2] -2.3 [3] -5.7 SQUIDBias (uA) = FLOAT[4] : [0] -70 [1] -80 [2] -70 [3] -75 QETBias (uA) = FLOAT[4] : [0] 230.7 [1] 164.4 [2] 258.9 [3] 202.5