| | Setup: DIB1/2 → SL 43/41 → 3.2 MHz filters → cables 3/1 → DCRC50(3)/55(1). |
| | Overnight: Flash and take a set of 6V Ba series. |
| 1014 | Tower = 44.4 mK |
| 1015 | Start Sequence of 8 45 min Ba series using flashandtake_R67.msl, with DCRC bias = -6 V, with 30s flash(including initial flash), 15min cooldown, 1000 beginning randoms, and a 60/50/70/50 bin threshold trigger on DCRC1qI/qO/DCRC3qI/qO, with 1.6384 ms pulses (8192 length) and 400 us prepulse (500 length). Good triggering |
| 1418 | Tower/MC/Coldplate = 45.6/54.7/208 mK, Still = 1.30 K / 0.040 mbar, G1/G2 = 97/84 mbar, 1K Pot = 1.39 K / 2.0 mbar. Main bath = 64.4% |
| 1419 | Fill LN2 cold trap full. |
| 1422 | Tweak 1K pot needle valve. (Pressure was low but thankfully didn't cause a fridge failure). Wait to settle. |
| 1434 | P2 pressure = 30 mbar. (I'm heading out - let me know if I need to stop back in today, it's no problem) |
| 1655 | Data still seems to be going well, should be done in a few hours. Note to self: after will try an ~8V series with just Q4(DCRC1QI) triggering aggressively to look for the lower 241Am lines. |
| 1940 | Set DCRC bias = 8V using set_DCRC_bias.msl Disable all triggers except DCRC1QI(Q4). Use pulse viewer to find lowest tolerable trigger setting. Reduce trigger to DCRC1QI=35 ADC. This gives ~10% noise triggers in the pulse viewer. |
| 1942 | Start ??min series of 8V data with 1000 beginning randoms,and a 35/-/-/- bin threshold trigger on DCRC1qI/qO/DCRC3qI/qO, with 1.6384 ms pulses (8192 length) and 400 us prepulse (500 length). Bad triggering |
| 1949 | Ugh, noise triggering in data. Why does there always seem to be a difference in how it triggers in the pulse viewer vs. in data? Raise trigger to DCRC1qI = 40 ADC |
| 1952 | Still noise triggering in data. Raise trigger to DCRC1qI = 45 ADC |
| 1956 | Still noise triggering in data. Raise trigger to DCRC1qI = 50 ADC |
| 2001 | Still noise triggering in data. Raise trigger to DCRC1qI = 55 ADC |
| 2005 | Still noise triggering in data. Raise trigger to DCRC1qI = 60 ADC (the current “standard” value) |
| 2011 | Still noise triggering in data. Raise trigger to DCRC1qI = 100 ADC as a sanity check. |
| 2020 | Still noise triggering because of course it is. Stop and restart the MIDAS run |
| 2032 | Of course it's fine now… Reduce trigger to DCRC1qI = 35 ADC |
| 2039 | Triggering well still. It'd be good to start over again with a flash, but it's working now and I don't want to break it! |
| 2102 | Tweak 1K pot needle valve open a few degrees. |
| 2117 | P2 = 28 mbar. |
| 2148 | P2 = 12 mbar. |
| 2212 | Stop run, ground detector. |
| 2215 | Start sequence of 8 45min series of 8V data using flashandtake_R67.msl with 30s flash(including initial flash), 15min cooldown, 1000 beginning randoms,and a 35/-/-/- bin threshold trigger on DCRC1qI/qO/DCRC3qI/qO, with 1.6384 ms pulses (8192 length) and 400 us prepulse (500 length). Some good triggering, some noise. |