| | 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 |
| | PuBe source in paraffin barrel behind shield (west side) |
| | Took NaI-triggered data overnight @50V, looks good |
| 0910 | Tower = 33.0 mK, Main bath = 34.7% |
| 0910 | HV = 50.00 V, Vtest = 2.4 mV → Vdetector = 48.9 V |
| 0915 | Fill LN2 cold trap bath |
| 0945 | Start 1 1-hour data series of 1-sided 50V HV coincidence data with Frontend Gain = (15/15/10)/(4/5/4), OG = 4/2, QET biases = table from Apr 28, with 1000 beginning randoms, no flashing, and a 6ADC bin threshold trigger on DCRC1 pA (Side1 pE). Running OR trigger of NaI detectors with PuBe source on west side of shield. NaI detector C has 311 mV threshold and detector B has 288 mV threshold |
| 1105 | Dial HV down to 0V |
| 1150 | Begin 30 minute bake with DCRCs 1&2 |
| 1428 | Tower/MC/Coldplate = 33.1/30.9/200 mK, Still = 1.3 K / 0.110 mbar, G1/G2 = 233/214 mbar, 1K Pot = 1.691 K / 28 mbar. Main Bath = 26.5%. Boil off rate: slow mode (predicted level: 26.3%) |
| 1435 | Fill LN2 dewar. |
| 1457 | Start LHe transfer (MB = 25.9%) |
| 1607 | End LHe transfer (MB = 91.1%) |
| 1630 | Fill LN2 cold trap bath. |
