2019/06/01 (Saturday)
| Setup | DIB1/3/4 → 3.2 MHz filters 2/3/1 → cable 3/1/2 → gender changer ?/3/2 → HVConn 1/3/2 → HV 1/2 → DCRCX(4)/DCRC50(3) DCRC33(2) → 1kV power supply → HV input |
|---|---|
| 0000 | Tower = 52.5 mK |
| 0020 | MB = 87.0% |
| 0220 | MB = 84.4% |
| 0320 | MB = 83.0% |
| 0420 | MB = 81.6% |
| 0520 | MB = 80.2% |
| 0620 | MB = 78.8% |
| 0720 | MB = 77.4% |
| 0820 | MB = 75.9% |
| 1020 | MB = 73.1% |
| 1120 | MB = 71.7% |
| 1220 | MB = 70.2% |
| 1320 | Tower/MC/Coldplate = 51.6/31.3/177 mK, Still = 1.01 K / 0.095 mbar, G1/G2 = 196/188 mbar, 1K Pot = 1.63 K / 22 mbar. MB = 68.7% surprisingly low coldplate and still temperatures, probably these thermometers are acting funny. |
| Tower temperature continues to fall linearly, slowly | |
| 1320 | Fill LN2 cold trap bath |
| 1520 | MB = 65.8% |
| 1620 | MB = 64.3% |
| 1720 | MB = 63.0% |
| 1820 | MB = 61.5% |
| 1855 | Start a 2 min SC noise series at HV = 0V CDMS detector: Driver Gains = 1x, DCRC4/3 QET biases = (420/370/440)/(420/0/450) uA, Front-End Gains = (2/2/3)/(5/5/5) 1000 BOR randoms, 10 HZ IR randoms, trigger on DCRC4pA/B/C threshold = 4/5/5 |
| 1858 | Start a 2 min Normal noise series at HV = 0V CDMS detector: Driver Gains = 1x, DCRC4/3 QET biases = (420/370/440)/(420/1000/450) uA, Front-End Gains = (2/2/3)/(5/5/5) 1000 BOR randoms, 10 HZ IR randoms, trigger on DCRC4pA/B/C threshold = 4/5/5 \\Note: DCRC3 pC was still showing pulses with QET bias = 1000 uA, so it's not totally normal. |
| 1920 | MB = 60.1% |
| 2020 | MB = 58.6% |
| 2120 | MB = 57.1% |
| 2220 | MB = 55.6% |
| 2320 | MB = 54.2% |