TITLE: 09/20 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 111Mpc
INCOMING OPERATOR: Niko
SHIFT SUMMARY:
H1 was locked 49hrs before EY had a timing glitch which ended the lock.
Noticed "green power stabilization railed" message for the SQZ Manager. This is a known issue for the last week & Sheila mentioned operators should ignore this message.
LOG:
- Optics Lab work 23:10-23:29, 0:20-0:47 (Dripta, Ethan & Dan later in the evening)
- 23:21 Begin seeing "green power stabilization railed" messages (in ISC_LOCK log) for SQZ Manager. Mentioned to Sheila & Daniel. (Might try to live with it until the fiber can be addressed during the Oct break.)
- 23:38 HAM6 RGA bake-out begins in OSB Mech Room (Kyle, WP#8359)
- 23:55-0:45 Restarted Access/Camera computer (access system was giving error and cameras were only updating every 3-sec).
- 0:49-1:07 MX trip (Kyle)
- 4:19: Timing glitch takes down EY (after 49 hours of lock).
- 4:23 Called Dave
- Frontends look good, so this timing glitch just took down models.
- Dave restarted the down-ed models
- 4:48 Dave calls to say I'm free to start redamping EY stuff & relocking H1.
- T240s were railed, and this took a bit of time for them to calm down (not seen this before), but they did come off the rails.
- 4:59 ISI trips again
- Going to try for DAMPED instead of FULLY ISOLATED. This was actually easy.
- Then went for ISOLATED_DAMPED
- 5:01 Texted Hugh & Jim.
- Jim texted instructions and then I called him to confirm:
- INIT St1 & St2
- INIT SEI_ETMY
- SEI_ETMY to ISOLATED_DAMPED
- SEI_ETMY finally to FULLY ISOLATED
- SEI_ETMY is back!!
- Just in case, finally took SEI_CONF to SC_OFF_NOBRSXY and then back to WINDY
- 5:28 All EY SEI stuff is good to go!
- 5:28 TMSy, ETMy, HEPIy, ISIy recovered from TRIPs
- LOCK#1 5:31-5:54
- ALSy had no flashing. Restored ETMy & TMSy to slider values from 2hrs ago and this brought back beam. Then optimized flashes (by adjusting only pitch for ETMy & this locked the arm up easily)
- Took to PRMI & it locked quickly.
- DRMI locked locked in 5min
- Lockloss at DARM to RF
- LOCK#2 5:55-6:11
- Noticed zotws3 froze (ops work station), so rebooted it. (couldn't change any medm screens)
- DRMI locked in 2min
- Lockloss at CARM 150 PICOMETERS
- ALIGNMENT 6:14-6:31
- SRC Align took multiple times, but it eventually completed.
- LOCK#3 6:35-6:45
- DRMI locked in 2min
- Lockloss at CARM to TR (note: first lock after alignment)
- LOCK#4 6:46-
- DRMI locked in 2min
- Handing off to Niko as we are....nevermind, don't wanna jinx! :)