| | 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 |
| 0908 | Tower = 33.6 mK, Main Bath = 33.5%. |
| 0909 | Fill LN2 cold trap bath. |
| 0949 | Restarting MIDAS was giving me some trouble. Had to explicitly kill -KILL some MIDAS programs which the .kill_daq_umn.sh missed. Then it seemed to work. |
| 0953 | Disable DCRC4 and set DCRC1 as timing master in ODB. Adjust trace lengths in ODB for DCRC1, DCRC2 to 26.2144ms (PhononWaveFormLength = 65536) |
| 1121 | Set QET biases to QETbias * prefactor =30 [μA] settings in the table here. |
| 1132 | Having trouble with DCRC1pB, it is totally railed when in FB mode no matter what we try. Power cycle DCRC1. |
| 1137 | Zap DCRC1 SQUIDs |
| 1154 | Start 30 min 0V HV transition long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=30 column in table ,20Hz in-run randoms with no starting/ending randoms. DCRC events seem misaligned. Bad timing link? |
| 1244 | Start 30 min 0V HV normal long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=+/- 300uA ,20Hz in-run randoms with no starting/ending randoms. |
| 1254 | Tower/MC/Coldplate = 32.9/29.4/195 mK, Still = 1.3 K / 0.110 mbar, G1/G2 = 222/217 mbar, 1K Pot = 1.669 K / 20.0 mbar. Main Bath = 27.8%. Boil off rate: close to slow mode (Predicted level: 28.9%) |
| 1321 | Start 30 min 0V HV s/c long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=0uA ,20Hz in-run randoms with no starting/ending randoms. |
| 1328 | Begin transfer procedure. Tower =33.0 mK. Will at least be able to see how noise changes as base temp fluctuates during transfer. |
| 1331 | Start LHe transfer (MB = 27.6%) |
| 1416 | End LHe transfer (MB = 91.3%) |
| 1423 | Tower = 32.9 mK and reasonably flat |
| 1423 | Start 30 min 0V HV s/c long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=0uA ,20Hz in-run randoms with no starting/ending randoms. PBs rail at event 150301. |
| 1440 | Fill LN2 dewar. |
| 1453 | Pre-bias to HV=65V |
| 1455 | Set QET biases to transition values. |
| 1505 | Reduce to HV= 52.00V, Vtest= 4.2 mV → Vtrue= 50.3 V |
| 1511 | Reduce to HV= 51.65V, Vtest= 4.49 mV → Vtrue= 49.85 V |
| 1514 | Start 30 min 50V HV transition long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=30 column in table ,20Hz in-run randoms with no starting/ending randoms. |
| 1545 | Looks like mhttp may have crashed, but dumps are still coming in to midasraw with good data. Let's let it finish the half hour before trying to recover the web interface. |
| 1553 | Use ./start_daq_umn.sh to recover the web interface. |
| 1556 | HV= 51.65V, Vtest= 4.01 mV → Vtrue= 50.0 V [image not archived: cool.svg] |
| 1601 | Start 30 min 50V HV superconducting long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=0 uA ,20Hz in-run randoms with no starting/ending randoms. |
| 1630 | Notice some weird glitch events in this superconducting data. e.g. 7170525_1601 Event 20002. A square-ish pulse is seen on one DCRC, some channels positive-going, others negative, and nothing on the other. What the heck is that? Anthony may have mentioned seeing something like this before. |
| 1640 | Set QET biases=300uA. Although all channels are well out of transition, we are still seeing what look like occasional pulses in all channels. Perhaps there are regions of the TES array which still aren't quite S/C at this bias? A quick look at 500uA bias reveals similar behavior… |
| 1644 | Start 30 min 50V HV normal long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=+/- 300 uA ,20Hz in-run randoms with no starting/ending randoms. |
| 1648 | HV= 51.65V, Vtest= 4.58 mV → Vtrue= 49.8 V, Tower=32.9 mK |
| 1719 | Prebias HV=90V |
| 1720 | Set QET biases |
| 1732 | HV= 78.9V, Vtest= 9.09 mV → Vtrue= 75.26 V |
| 1735 | HV= 78.6V, Vtest= 8.7 mV → Vtrue= 75.1 V |
| 1735 | Start 30 min 75V HV transition long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=30 column in table ,20Hz in-run randoms with no starting/ending randoms. |
| 1750 | The cold trap is still frosty from the last fill, so I am not going to bother topping it off. |
| 1810 | Start 30 min 75V HV superconducting long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=0 uA ,20Hz in-run randoms with no starting/ending randoms. |
| 1811 | HV= 78.6V, Vtest= 8.45mV → Vtrue= 75.2V |
| 1815 | HV= 78.4V, Vtest= 8.38mV → Vtrue= 75.0V [image not archived: cool.svg] |
| 1842 | Set HV=0 V |
| 1846 | Tower = 32.8 mK |
| 1850 | Start 30 min 0V HV s/c long trace random data set with 26.2144ms trace length, Frontend Gain = (15/15/4)/(5/4/4), OG = 4/2, QET biases=0uA ,20Hz in-run randoms with no starting/ending randoms. |
| 1924 | Begin 1 hour bake. |