2016/11/17 (Thursday)
| Setup: DIB1/3/4 → 3.2 MHz filters → cables1/2/3 → DCRC55(1)/33(2)/50(3) | |
| 0810 | Tower/MC/Coldplate = 32.9/35.7/210 mK, Still = 1.1 K / 110 μbar, G1/G2 = 185/185 mbar, 1K Pot = 1.69 K / 26 mbar. MB = 63.3%. Boiloff rate: Very close to slow-mode, still a little bit faster |
| 0815 | Fill LN2 coldtrap bath. LN2 Dewar is now empty. |
| 1600 | The DCRC driver was crashing whenever DCRC2 was enabled. This problem was fixed by not requiring DCRC2 (aka DCRC33) to read its calibration file. That calibration is not needed for this run but in the future we might want it again. In the ODB the key to do this is / Equipment / Tower01 / Settings / DCRC2 / General / UseCalibrationRegisters, set to “n” |
| 1654 | Fill LN2 coldtrap full. |
| 1742 | Test series for background data with NaI trigger. Same conditions as two days ago and trying for the same QET biasing scheme. |
| 1749 | Start sequence of 15 one-hour data series of 0V data with Frontend Gain = 5/2/5, OG = 8/3/8, with 2000 beginning randoms (because of increased pileup from higher source rate), with no flashing in between series, triggered with NaI coincidence setup (low threshold 92mV high threshold 124mV and 1100V on NaI detector) using DCRCX (DCRC4) PhA. |
| 1750 | MB = 50.1% |