TITLE: 12/02 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 73.5385Mpc
INCOMING OPERATOR: Nutsinee
SHIFT SUMMARY: Mostly a quiet shift, but there were a couple SDF issues
LOG:
Corey had just relocked after an earthquake when I arrived. Shortly after going to OBSERVE the TCS guardians knocked us out, as Kiwamu logged. Then quiet until just a couple minutes ago. SDF_DIAG kick us out of OBSERVE, looking at the log I find:
2016-12-02T07:51:08.18971 DIAG_SDF [RUN_TESTS.run] USERMSG 0: DIFFS: ngn: 1
2016-12-02T07:51:10.70676 DIAG_SDF [RUN_TESTS.run] USERMSG 0: DIFFS: ngn: 3
2016-12-02T07:51:17.18839 DIAG_SDF [RUN_TESTS.run] USERMSG 0: DIFFS: ngn: 1
I can't find an (the? I didn't know we had one) NGN guardian, but I know where the CS_BRS guardian lives. When I looked at that guardian, it had just started a recenter cycle at the same time:
2016-12-02T07:51:07.99681 CS_BRS JUMP target: TURN_OFF_DAMPING
2016-12-02T07:51:07.99694 CS_BRS [RUN.exit]
2016-12-02T07:51:08.05901 CS_BRS JUMP: RUN->TURN_OFF_DAMPING
2016-12-02T07:51:08.05920 CS_BRS calculating path: TURN_OFF_DAMPING->RUN
2016-12-02T07:51:08.05959 CS_BRS new target: TURN_OFF_PZT_CTRL
...
Did the CS_BRS guardian throw an SDF difference in NGN that dropped us out of OBSERVE?
That's excatly what happend. I went and UNmonitored all of the CBRS channels in SDF so this cant happen again.
The rest of the NGN channels are being monitored, but I'm not sure if they should be since they are not tied into the IFO at all. I'll talk to the right people and find out.
Oh, yeah, I'm glad that you not-mon'ed the cBRS channels. Anything in the NGN Newtonian noise model is totally independent of the IFO, and shouldn't be stuff that'll knock us out of observing.
Probably the cBRS and its need for occassional damping is the only thing that will change some settings and knock us out of Observe, so maybe we can leave things as-is for now. The rest of the NGN channels are just seismometers, whos output doesn't go anywhere in the front ends (we collect the data offline, and look at it). Since all of those calibrations are in, and should be fine, I don't anticipate needing to change any other settings in the NGN EPICS channels.