2017/05/10 (Wednesday)
| 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 | |
| 0920 | Tower/MC/Coldplate = 33.1/30.8/197 mK, Still = 1.3 K / 0.110 mbar, G1/G2 = 235/220 mbar, 1K Pot = 1.688 K / 28 mbar. Main Bath = 69.8%. |
| 0925 | HV = 50.01 V, Vtest = 4.7 mV → Vdetector = 47.9 V |
| 0930 | Fill LN2 cold trap bath. |
| 1004 | 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 |
| 1106 | Dial HV down to 0 V. |
| 1130 | Begin 30 minute detector bake with DCRCs 1&2 |
| 1250 | Dial HV up to 65 V. After 5 minutes dial down to 50.00 V. |
| 1310 | HV = 50.00 V, Vtest = 2.3 mV → Vdetector = 49.0 V Tower = 33.2 mK, close to base |
| 1316 | 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 |
| 1426 | Start 19 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 1500ADC bin threshold trigger on DCRC4 pA (TTL signal). 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 |
| 1700 | Fill LN2 cold trap bath |