| | Current setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50. |
| | Overnight: No data, Cf source near detector for activation. Tower temp stable. |
| 0925 | Tower/MC(H35)/MC sensor/Cold Plate = 30.8/25.1/41.4/157 mK, Still = 1.37 K / 0.11 mbar, G1/G2 = 155/130 mbar, 1K Pot = 1.73 K / 22 mbar, Main bath = 39.5% |
| 0930 | Fill LN2 cold trap full. |
| 1000 | Replace “suspect” gender swapper with new one. Power on DCRC55 on DIB1. All channels look fine. |
| 1035 | Put Cf source back in safe. |
| 1050 | Flash all three DIBs for 30s in preparation for taking long de-neutralization runs. |
| 1118 | Start 45min background data series at -/+4V, FG=5/2/5, OG=3, with 1000 initial randoms, 2000 events/file, 30s flash and 25min cooldown after. Phonon thresholds the same as Monday's values. |
| 1120 | Notice that DIB1 pB is showing signs of having a test signal down it. The pulses have a longer rise leading up to them. Stop data run. Check 40ms trace length, and measure the noise. It shows 83Hz “test signal” noise. |
| 1125 | Check register 3c on DCRC55, but it reads back 0000, meaning all QET return line test signals are disconnected. Looking back at an email from Bruno, on the RevC.1 boards, register 3d also controls test signals. Read 3d on DCRC55, returns 0DD7. According to Bruno's email, this means the test signal is active. Write 3d 09D7 instead to turn off test signal, and DIB1 pB no longer shows signs of 83Hz noise! |
| 1128 | Start data again, but notice that a few channels are railed. So stop data run to unrail channels. |
| 1134 | Start 45min background data series (again) at -/+4V, FG=5/2/5, OG=3, with 1000 initial randoms, 2000 events/file, 30s flash and 25min cooldown after. Phonon thresholds the same as Monday's |
| 1324 | Start 15min background data series. Two cycles at -/+4V, FG=5/2/5, OG=3, with 1000 initial randoms, 2000 events/file, 30s flash and 25min cooldown after. Phonon thresholds the same as Monday's values. |
| 1451 | Commence LHe transfer (30.7%) |
| 1618 | Cease LHe transfer (93.5%). |
| | At end of transfer, LHe transfer tube breaks, so deal with that… |
| 1704 | Start background data series 22 cycles at -/+2V, FG=5/2/5, OG=3, with 1000 initial randoms, 2000 events/file, 30s flash and 25min cooldown after. Phonon thresholds the same as Monday's values. |
| 1710 | Well now we pushed the transfer back to Sunday, so stop data series to modify DAQDAQ to take more series. |
| 1712 | Start background data series 53 cycles at -/+2V, FG=5/2/5, OG=3, with 1000 initial randoms, 2000 events/file, 30s flash and 25min cooldown after. Phonon thresholds the same as Monday's values. |
| 1714 | Fill LN2 cold trap full. |