| | Setup: DIB1/3/4 → SL 27/19/20 → 3.2 MHz filters → cables 2,1,3 → HV board inputs 1,3,2 → HV board outputs 1,2 → DCRC55(1)/50(3). Also DCRC4 is powered and hooked up to control the HV setting. |
| 0755 | As of last night, the DAQ programs won't stay on. When you start the dcrc_driver, then the tower_fe, then the trigger_fe, then dcrc_driver or tower_fe will spontaneously shut off. |
| 0805 | Tried a few things, such as disabling one or the other DCRC in the ODB. Doesn't help, can't keep the programs running. If I disable both DCRCs the programs will start. Then I tried enabling them while the programs were running and that was OK. Then I tried starting a run and they all shut off again. |
| 0830 | Tried to communicate with DCRCs 1, 3 and 4 via telnet. Couldn't get a connection with any of them. |
| 1406 | Tower/MC/Coldplate = 24.0/26.2/156 mK, Still = 1.3 K / 0.110 mbar, G1/G2 = 211/195 mbar, 1K Pot = 1.66 K / 36 mbar, MB = 26.1% |
| 1406 | Fill LN2 cold trap full. |
| 1415 | Start LHe transfer (MB = 26.1%) |
| 1424 | Powercycle DCRCs 1 & 3. Turn DAQ programs on, they seem to be staying on now. |
| 1430 | Zap DCRCs 1 & 3. |
| 1455 | Unsure if MB level meter is accurate… it is acting weird. Will try to tighten connections/use frost level to determine how full the bath is. From the recovery meter speed it does seem like the transfer is still going (not a blockage). |
| 1458 | Start run. All active DCRC 1 & 3 channels are unrailed and in the 0.8-09 V range. End run. |
| 1508 | Doesn't seem like adjusting the connections on the level meter improved anything. Still not reading a consistent level. Frost is forming pretty slowly. |
| 1545 | Meter finally showing a value that makes sense and is increasing as expected after unplugging and turning it back on. |
| 1642 | End LHe transfer. (MB = 89.8%) |
| 1659 | Begin IbIs data sequence on DCRC3pB with HV=0V from 750 to 300 uA in -1.0 uA steps, 3 seconds of data per step. (IbIsDCRC3pB.msl) |
| | Sequence continued to completion. |
| 1950 | Turn off DAQ progams (trigger, tower, dcrc). Restart MIDAS and DAQ programs. |
| 1959 | Begin IbIs data sequence on DCRC3pC with HV=0V from 600 to 300 uA in -1.0 uA steps, 3 seconds of data per step. (IbIsDCRC3pC.msl) |
| | Series continued to completion |
| 2245 | Turn off DAQ progams (trigger, tower, dcrc). Restart MIDAS and DAQ programs. |
| 2254 | Begin IbIs data sequence on DCRC3pD with HV=0V from 750 to 450 uA in -1.0 uA steps, 3 seconds of data per step. (IbIsDCRC3pD.msl) |
| | Sequence continued to completion |