UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20170308

2017/03/08 (Wednesday)

Previous Day

Setup: DIB1/3/4 → 3.2 MHz filters 3/1/2 → cable 3/1/2 →gender changer 3/1/2 → HVConn 1/3/2 → HV 1/2 → DCRC55/DCRC33
0908 Tower/MC/Coldplate = 33.1/30.7/186 mK, Still = 1.2 K / 0.110 mbar, G1/G2 = 251/236 mbar, 1K Pot = 1.689 K / 30 mbar, Main bath = 69.8%. Boil off rate: faster than slow mode (predicted level: 72.2%).
0915 Fill LN2 cold trap bath
1134 Measure baselines.
Crystal = 0 V
Channel Baseline (V)
DIB1 PA -0.9051
DIB1 PB -0.6705
DIB1 PC -0.5312
DIB2 PC -0.8959
DIB2 PD -0.7945
1137 Start 30 min 0V HV long trace random data set with 26.2144ms trace length, 20Hz in-run randoms with no starting/ending randoms.
1219 Set HV bias to 30V.
1229 V_leak = 1.7mV, V_crystal = 29.3 V
1232 Measure baselines.
Crystal = 29.3 V
Channel Baseline (V)
DIB1 PA -0.8256
DIB1 PB -0.6085
DIB1 PC -0.5108
DIB2 PC -0.8625*
DIB2 PD -0.7322

*Was ADC railed, SQUID relocked w/o changing Driver Offset |

1235 Start 30 min 30V HV long trace random data set with 26.2144ms trace length, 20Hz in-run randoms with no starting/ending randoms.
1310 Set HV bias to 60V
1340 V_leak = 3.5 mV, V_crystal = 58.5 V
1343 Measure baselines. They're lower than above, maybe I didn't wait long enough before, or maybe we should be flashing between these.
Crystal = 58.5 V
Channel Baseline (V)
DIB1 PA -0.8508
DIB1 PB -0.6597
DIB1 PC -0.5216
DIB2 PC -0.8674
DIB2 PD -0.7769
1348 Start 30 min 60V HV long trace random data set with 26.2144ms trace length, 20Hz in-run randoms with no starting/ending randoms.
1432 Raise HV to 90 V
1502 V_leak = 7.8 mV, V_crystal = 86.5 V
Crystal = 86.5 V
Channel Baseline (V)
DIB1 PA -0.8481
DIB1 PB -0.6711
DIB1 PC -0.5063
DIB2 PC -0.8377
DIB2 PD -0.7783
1507 Start 30 min 90V HV long trace random data set with 26.2144ms trace length, 20Hz in-run randoms with no starting/ending randoms.
1637 Start 1 hour bake
1647 Fill LN2 cold trap so full.

Next Day