2017/11/18 (Saturday)
| 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). | |
| 0701 | Begin IbIs data sequence on DCRC1pC with HV=0V from 750 to 400 uA in -0.5 uA steps, 3 seconds of data per step |
| The sequence got stuck apparently - at 08:27 files stopped being produced, the last one at 526.5 uA. | |
| 1020 | As far as I can tell (using the Opera browser through x-forwarding at home) the MIDAS website is unresponsive. I'll restart it again. |
| 1035 | Kill MIDAS, restart MIDAS and programs. As with the last hangup, had to go to ODB:RunInfo and set Transition In Progress to 0 because it was stuck in transition. Deleted the data files from /livedata from this partially-completed sequence, will restart it. |
| 1040 | Begin IbIs data sequence on DCRC1pC with HV=0V from 750 to 400 uA in -0.5 uA steps, 3 seconds of data per step |
| 1320 | Begin IbIs data sequence on DCRC3pB with HV=0V from 750 to 400 uA in -0.5 uA steps, 3 seconds of data per step |
| 1450 | Again, it looks like the sequence got stuck. Each time I've been able to run one IbIs sequence, but the second one gets stuck. This one stopped producing data at 14:42 at 526.5 uA - that's the same as the last time it got stuck! Something's up. |
| 1500 | Kill MIDAS, restart MIDAS and programs. Another detail with these hangups is that the kill_daq shell script does not kill mhttp, dcrcdriver, towerfe, triggerfe - these have to be killed individually with kill -KILL. |
From the messages above looks like after the sequence starts a run, all the trace lengths are “updated” for some reason, certainly nothing explicit in the sequence. The QET bias gets updated as normal. Nothing in the messages indicates why it got stuck, it just got stuck.
| 1521 | Begin IbIs data sequence on DCRC3pB with HV=0V from 750 to 400 uA in -0.5 uA steps, 3 seconds of data per step |
|---|---|
| 1715 | Fill LN2 cold trap full. |
| 1945 | The last sequence ran fine. I'm going to preemptively restart MIDAS before starting the next one. |
| Actually I forgot to start the DCRC driver and the Tower and Trigger front-ends before starting the last sequence. The dumps are all very small so they're probably empty. Delete these. | |
| 1955 | Restart MIDAS and start DAQ programs. |
| 1956 | Begin IbIs data sequence on DCRC3pB with HV=0V from 750 to 400 uA in -0.5 uA steps, 3 seconds of data per step |
| 2215 | Sequence seems to have worked. Turn off DAQ programs, restart MIDAS, restart DAQ programs. |
| 2218 | Begin IbIs data sequence on DCRC3pC with HV=0V from 750 to 400 uA in -0.5 uA steps, 3 seconds of data per step |
| Looks like this sequence got stuck, too. Although it went farther than the last couple of times. Last data file was 459.0 uA at 00:13. That may or may not be low enough to span the transition. So I'll go on to the next channel, but maybe redo this one later. | |
| Moved today's IbIs data files to /rawdata/07171118_2500. |