| | Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50 |
| | Taking background data overnight with MIDAS. Base temp continues to drift downward. Last flash at 07:11 |
| | Only 34 of the 40 series started on Friday were written to disk, and none of the 20 series started on Sunday were written to disk. This is because the logger program crashed. Anthony is working on a warning system for when this happens. 07151213_0047 was the last series written. |
| 0850 | Tower/MC(H35)/MC sensor/Cold Plate = 32.4/27.4/41.8/166 mK, Still = 1.29 K / 0.10 mbar, G1/G2 = 120/135 mbar, 1K Pot = 1.59 K / 5.5 mbar, Main bath = 48.3% |
| | G2-G1 is increasing. Should we switch cold traps? |
| 0855 | Fill LN2 cold trap Dewar |
| 1055 | Check all twelve phonon channels on MIDAS gui, all look good. |
| 1110 | Main bath = 43.7% |
| 1142 | Start 1 30min series of +/-4V MIDAS background data; FG=5/2/5, OG=3; with 30s flash and 25min cooldown in between series. Trigger on DIB1pD only (Side2pD) with trigger threshold from Wednesday's values. |
| 1450 | Have been trying to tune the threshold of a single channel using the MIDAS Detector Testing gui. To see the effects of thresholds properly it's necessary to use the ODB - go to / Equipment / Triggerfe2 / Settings / - and zero out the randoms settings, specifically RandomRate / N Beginning of Run Randoms / N End of Run Randoms to 0/0/0. Before taking data set back to defaults 1/1000/1000. |
| | Chose DIB1pA to trigger on - it has low low-f noise. Tried adjusting threshold from its current standard = 32 to other values - 25 seems to cause a lot of retriggering and some random triggers, 30 seems to be relatively OK. This was difficult to do with the gui because it would only show pulses for a few seconds then freeze up for 15 seconds or so. |
| 1500 | Main bath = 36.6% |
| 1530 | Start LHe transfer at 35.1% |
| 1632 | Finish LHe transfer at 91.1% |
| 1639 | Start 15 30min series of +/-4V MIDAS background data; FG=5/2/5, OG=3; with 30s flash and 25min cooldown in between series. Trigger on DIB1pA only (Side1pB) with trigger threshold = 30. Note: only 8 of these series were recorded. Note: this data is bad: trace length of DIB1 phonons was inadvertently set to 10 ms. |
| 1710 | Data has started. DIB2pA looks a little distorted. |
| 1740 | Fill Ln2 cold trap full. |