| | Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50 |
| | Taking background data overnight with MIDAS. Base temperature at tower crept downward by 0.2 mK overnight again. Flash at 07:53. MIDAS still taking data. |
| 0835 | Tower/MC(H35)/MC sensor/Cold Plate = 33.3/28.1/42.9/168 mK, Still = 1.28 K / 0.095 mbar, G1/G2 = 125/125 mbar, 1K Pot = 1.56 K / 4.0 mbar, Main bath = 46.2% |
| 0845 | Fill LN2 cold trap Dewar |
| 0850 | Last series of data (started at 08:19) is now finished |
| 0910 | Checked all 12 phonon channels with MIDAS gui. All show pulses, all have good baselines. |
| 0915 | Set charge bias to 0/0 V. (nominal “0” values, not true 0. Probably I should look up the true 0 values.) |
| 1010 | Place Cf source inside shield near top. |
| 1020 | Viewing pulses, observe a true event rate of ~95Hz. |
| 1026 | Start 2 30min series of -/+4V MIDAS Cf data; FG=5/2/5, OG=3; with 30s flash and 25min cooldown in between series. Trigger on DIB2 phonon channels with trigger thresholds from Wednesday's values. |
| 1238 | Start 30min series of +/-4V MIDAS Cf data; FG=5/2/5, OG=3; with 30s flash and 25min cooldown in between series. Trigger on DIB1 phonon channels with trigger thresholds from Wednesday's values. |
| | The three series above unfortunately were taken with 40 ms trace lengths. This must be because we were adjusting the window in the pulse viewing gui - according to Anthony this writes to the ODB, so you need to make sure to correct it in the ODB or on the pulse viewer afterwards. |
| 1350 | Start 30min series of +/-4V MIDAS Cf data; FG=5/2/5, OG=3; with 30s flash and 25min cooldown in between series. Trigger on DIB2 phonon channels with trigger thresholds from Wednesday's values. |
| 1500 | Main bath = 34.2% |
| 1510 | Commence LHe transfer (28.7%). |
| 1524 | Put Cf source back in safe. |
| 1620 | Cease LHe transfer (94.9%). |
| 1708 | Pulses still all alive. Notice that DIB1 phA had a Frontend Gain set to 1 instead of 5. Set it to 5 and check on pulses. Had to adjust phA Driver Offset to unrail, but now it's all good. |
| 1713 | Start 40 cycles of 30min series of -/+4V MIDAS background data; FG=5/2/5, OG=3; with 30s flash and 25min cooldown in between series. Trigger on DIB1 phonon channels with trigger thresholds from Wednesday's values. Note: only 34 of these series were written due to failure of the logger script, last series written was 07151213_0047. |
| 1715 | Fill LN2 cold trap full. |