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Reports until 00:08, Wednesday 04 December 2019
LHO General
patrick.thomas@LIGO.ORG - posted 00:08, Wednesday 04 December 2019 (53672)
Ops Eve Shift Summary
The script to generate an alog template for the shift summary is giving errors.

Dec. 3 2019

State: Observing at ~115 MPc.
Summary: One lock loss, cause not immediately apparent. Struggled relocking until I commented out rsp.rs_bootstrap_power('PSL', power) in the LASER_PWR guardian and reloaded it. I can't say for certain if this was what fixed it. We are currently only at 36.7 W, likely because of this change. The INCREASE_FLASHES state seemed to work. I had to manually request it, and I think it might have left the SDF differences that I attached in the previous log.
Log:

01:10 UTC Vlad to optics lab
01:33 UTC Vlad done
03:28 UTC ETMY violin mode 2 has climbed to around 3. Clicked out of observing. Reloaded VIOLIN_DAMPING guardian as per Cheryl's request. Set VIOLIN_DAMPING guardian to DAMPING_ON_SIMPLE. Set ETMY mode 2 gain to -2. Set VIOLIN_DAMPING guardian to IDLE and then to DAMPING_ON_DC.
03:32 UTC Clicked back to observing
04:43 UTC Lock loss
04:50 UTC Green arms are not locking. Trying INCREASE_FLASHES on both arms.
04:58 UTC INCREASE_FLASHES seems to have worked. ISC_LOCK is moving to LOCKING_ALS.
05:06 UTC ISC_LOCK moved to ACQUIRE_PRMI automatically
05:06 UTC PRMI_LOCKED
05:18 UTC ENGAGE_ASC_FOR_FULL_IFO, OMC saturated many times
05:28 UTC Lock loss from INCREASE_POWER
ISC_LOCK had to go to ACQUIRE_PRMI again
06:05 UTC Lock loss from LOWNOISE_ASC
06:10 UTC IR not found. Adjusted COMM and DIFF offsets by hand
DRMI locked without going to PRMI
06:42 UTC Lock loss from LOWNOISE_ASC
06:48 UTC Commented out rsp.rs_bootstrap_power('PSL', power) in the LASER_PWR guardian and reloaded it
07:19 UTC NLN
07:21 UTC Observing
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