| | Setup: DIB1/3/4 → 3.2 MHz filters → cables1/2/3 → DCRC55(1)/33(2)/50(3) |
| | Overnight: DCRC3pD railed 13 minutes into the 1202_2312 run. Since this was the triggering channel the files get very small after that, only huge events push DCRC3pD out of its rail. Also looks like I didn't set any initial randoms. |
| 1122 | Start by going back to Nov 15 QET settings, these were also marked as the “old” QET settings in yesterday's log |
| 1135 | Start LHe Transfer (23.3%) |
| 1141 | Tower/MC/Coldplate = 32.9/35.8/209 mK, Still = 1.1 K / 110 μbar, G1/G2 = 187/164 mbar, 1K Pot = 1.66 K / 20 mbar. MB = 23.3%. Boil off rate: slow-mode. |
| 1150 | adjusted DCRC1 PhC to QET bias of 181 uA instead of 185 uA to avoid pulse ringing |
| 1157 | take 88Y source out of safe and put in lead castle behind cryostat |
| 1220 | Finish LHe Transfer (91.2%) |
| 1220 | Return 88Y source to safe, take out 22Na source, going to use this for data taking |
| 1240 | Release pressure from MB. |
| 1249 | Set DAQ to self-trigger, want to take a few hours of just 22Na data to see if the Compton spectrum at low-energy is just visible |
| 1255 | Fill LN2 Coldtrap full. |
| 1330 | Re release pressure from MB. |
| 1354 | Something seems to have changed, need to snap all QETs and come back to a higher QET bias in order not to be superconducting (I guess, there were no pulses so not in transition and seems too low in QET bias to be normal) Modify all channels. |
| 1413 | Forgot to mention, I zapped SQUIDs after I noticed something was wrong, and before trying to modify all channels. It didn't seem to help |
| 1443 | Finally got all the channels back, most needed to be 5-10uA higher in QET bias. |
| 1516 | Start a sequence of 16 1-hour series of 0V data with Frontend Gain = 5/2/5, OG = 8/3/8, with 1000 beginning randoms, with no flashing in between series, and a 70ADC bin threshold on all Side-1 channels, self-triggered data with a 22Na source in the lead castle behind the cryostat. |