aLIGO LHO Logbook

H1 General

cheryl.vorvick@LIGO.ORG - posted 10:25, Monday 12 December 2016 - last comment - 15:17, Monday 12 December 2016(32474)

Ops Day Transition

TITLE: 12/12 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 0.0Mpc
OUTGOING OPERATOR: Ed
CURRENT ENVIRONMENT:
    Wind: 4mph Gusts, 3mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.22 μm/s
QUICK SUMMARY:

H1 was locked until about 17:22UTC - PI mode range up
relocking now

Comments related to this report

cheryl.vorvick@LIGO.ORG - 11:01, Monday 12 December 2016 (32476)

Link

19:00UTC (11AM) Update:

locked DRMI but alignment was not good enough to survive ASC
started an Initial Alignment
Fast Shutter is in error, I can't close or open and have eliminated all guardian issues
Fil is going out to the floor to check on the power supply

terra.hardwick@LIGO.ORG - 11:52, Monday 12 December 2016 (32478)

Link

Mode26 rang up: this is one that is known to require some phase tweaking over long locks. Due to road conditions, there wasn't an operator here at the time so the usual phase changes didn't happen.

cheryl.vorvick@LIGO.ORG - 13:19, Monday 12 December 2016 (32480)

Link

My day shift summary - have to hand off at 21:15UTC (1:15PM PT)

first Initial Alignment got to DRMI but did not survive ASC
set some optics back to alignments of 12/10 00:20-00:30UTC, before the 34 hour lock
did an Initial Alignment
this alignment is currently at ENGAGE REFL WFS
handing off to Patrick

Activities:

19:30UTC - Christine, roll up door - complete
19:50UTC - Kyle to MY - not sure if he's still at MY
20:58UTC - Rick, to LVEA to geta spectrum analyzer - complete

corey.gray@LIGO.ORG - 15:17, Monday 12 December 2016 (32485)ISC, OpsInfo

Link

Note About Fast Shutter Issue above mentions it was in Error, and Cheryl resolved it. Just wanted to make a note about this since it will happen again. Sometimes the HAM6 Fast Shutter trips. When it does, we have a command in our ISC_LOCK scripts which tests the Fast Shutter. So, until we get to that Fast Shutter Test, the shutter will stay in this Error State. Fearing the Shutter was down, Fil went out to check on the Power Supply for the Fast Shutter--it was on and operational.

Once Cheryl took H1 to a state where the test was run, the Error went away. This was marked for about 10min of downtime as CORRECTIVE MAINTENANCE, and an FRS (#6917) was filed.