2021/12/20 (Monday)
- Lab in-personnel: Matt
| Status | Run 75 in progress |
|---|---|
| Setup | Tower Faces 5/3/2 → Cables 2/1/3 → nothing/diverter_board/nothing → DCRC55(1)/DCRC50(3)/DCRCx(4) |
| 1130 | Goldman/Tower/MC(H35)/Coldplate = 52.0/162/36.9/217 mK, Still = 1.64±0.06 K / 0.130 mbar / 0 mW, G1/G2= 191/176 mbar, 1K Pot = 1.63 K / 21±1 mbar, MB = 62.6%. |
| Tower temperature is elevated since the transfer yesterday. Might have thought a phonon channel was in a bad state but all 11 are showing pulses. | |
| 1135 | Zap SQUIDs on all three DCRCs |
| 1140 | Fill LN2 cold trap dewar. |
| 1240 | Temperature is down slightly: Goldman = 51.2 mK |
| 1305 | Using IbIs information from Dec 10-15 I reset all the QET biases so that they have matching dP/dI = 1.0 uV. |
| 1520 | Adjust QET biases to get all channels low in the readout range, -0.8 to -1.0 V |
| let's take some full-readout data. Then try to process it. | |
| 1520 | Start 0V data series with 1000 initial randoms, no in-run randoms, trigger on DCRC3pB threshold 5. Start series with the Start Button. End after 3 minutes |
| Looks like something is wrong with the file naming. The IbIs sequence is supposed to set things back to normal data handling but I think something is wrong with it… | |
| Need to change “/Logger/Channels/0/Settings/Filename” to .RUN%05d_DUMP%04d.mid.gz. Did this in the ODB and the IbIs_loop_Generic.msl sequence too. | |
| OK we'll try another series | |
| 1538 | Start 0V data series, 20 min long, with 1000 initial randoms, no in-run randoms, trigger on DCRC3pB threshold 5. Start series with the Start Button. |
| Worked out a configuration to process this data, got it to work. But looking at the data it was clear that the channel map was wrong. This turned out to be the problem we ran into before - the default SNOLAB HV detector type (type 710) has a non-standard order for the channel names, presumably to match SNOLAB horizontal flex channel numbering. In my copy of cdmsbats I've changed this back to standard Side1pA, Side1pB, … Side2pF. This is in BatCommon/datareader/BatRootTypes.h |