2016/08/27 (Saturday)
| Setup: DIB1/2/3 → 3.2 MHz filters → nothing/disconnector board/remapping board → HVside2board → DCRC55(1)/50(3). Disconnector board has all charge lines disconnected. | |
| DCRCs powered overnight. Not pumping on IVC.. Baked detector in grounded HV mode for 12 hours overnight, Tower at 0.33 K until 04:48. | |
| 1043 | Tower/MC/Coldplate = 37.9/29.4/157 mK, Still = 1.39 K / 80 μbar, G1/G2 = 179/162 mbar, 1K Pot = 1.54 K / 4.5 mbar, MB = 32.4%. IVC=7.4 μbar. |
| 1049 | DIB1PC baseline=-0.75V. Pulses look typical (i.e. not “peaky” as we expect to see from He film) Increase HV until pulses disappear at 41.5V. 62.7mV leakage. Pulses+breakdown noise return after ~1 min. Decrease HV to 38V where pulses look good and baseline = -0.66V, 57.2mV leakage. Breakdown limit = 12.8 V |
| 1100 | Increase HV until pulses disappear at -32.5V. -50.3mV leakage. Pulses+breakdown return noise after ~1 min. Decrease HV to -28.3 V where pulses look good and baseline = -0.69V, -41.9mV leakage. Breakdown limit = -5.36V |
| 1129 | Commence LHe transfer. (31.4%) |
| 1140 | LN2 dewar empty, but so is the dewar in the fill room :/ Filling our LN2 dewar. |
| 1301 | Cease LHe transfer (90.6%) |
| 1310 | Release MB pressure. |
| 1311 | Fill LN2 cold trap full. |
| 1318 | Start 12 hour bake with HV grounded. |