aLIGO LHO Logbook

H1 General

cheryl.vorvick@LIGO.ORG - posted 16:57, Saturday 17 December 2016 - last comment - 20:28, Saturday 17 December 2016(32689)

Ops Eve Transition:

State of H1: unlocked, recovering

Activities:

NPRO noise eater reset - Darkhan
water pressure in OSB is very low - Bubba is hear to look at it
currently starting an Initial Alignment

Comments related to this report

cheryl.vorvick@LIGO.ORG - 18:12, Saturday 17 December 2016 (32690)

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Update: as of 2:08UTC, ALS X arm is locked at 0.92, COMMA_DEMOD is at 3.7 which is low, X arm in IR is flashing at 0.7, I'm declaring relative victory and moving on to the Y arm

X arm recovery:

set PR2, PR3, ITMX, ETMX, and TMSX back to SDF slider values
trended alignments back to 12:17, 00:44UTC
worked my back to trended values
worked on ITMX and EMX first, then those and PR3 and TMSX

cheryl.vorvick@LIGO.ORG - 18:43, Saturday 17 December 2016 (32691)

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Update: as of 2:41UTC, ALS Y arm locked at 1.05, X arm needs some attention again

cheryl.vorvick@LIGO.ORG - 19:00, Saturday 17 December 2016 (32693)

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Update: 2:59UTC - heading into LVEA to reset Noise Eater, second time my shift

cheryl.vorvick@LIGO.ORG - 19:14, Saturday 17 December 2016 (32694)

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Update: 3:14UTC - noise eater reset - X arm IR locked and WFS offloaded

cheryl.vorvick@LIGO.ORG - 19:34, Saturday 17 December 2016 (32695)

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Update: as of 3:33UTC, Initial Alignment is complete

had to use MICH_SET to get BS close enough for MICH to lock
had to use SET_SRY to get SRM close enough for SRC to lock

cheryl.vorvick@LIGO.ORG - 20:28, Saturday 17 December 2016 (32696)

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3:44UTC - locking full IFO

3:44UTC - locking arms green - X arm VCO offset voltage railed at 5V
3:48UTC - GRB came in, H1 is at Find_IR
4:25UTC - H1 is in DC Readout