cheryl.vorvick@LIGO.ORG - posted 02:50, Tuesday 06 August 2019 (51049)
OPS Eve Summary
TITLE: 08/06 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Patrick
SHIFT SUMMARY: relocked with much intervention, lockloss due to the Montana EQ, many issues relocking, handed off to Corey
LOG:
- 04:10:12 - DCPD
- 04:30:12 - lockloss, Montana EQ
- 04:31:19 - locking arms green, 1
- 04:33:58 - lockloss
- 04:35:05 - locking arms green, 2
- 04:52:05 - IR not found
- 04:54:02 - I entered DOWN, to return to locking green
- 04:55:08 - locking arms green, 3
- 04:55:57 - lockloss
- 04:58:18 - locking arms green, 4, arms look good, no lock loss, moving on to DRMI
- 05:03:45 - aquire_DRMI_1f, 1
- 05:10:07 - aquire_PRMI
- 05:13:17 - aquire_DRMI_1f, 2
- 05:18:18 - aquire_PRMI
- 05:19:47 - aquire_DRMI_1f, 3
- 05:24:48 - aquire_PRMI
- 05:31:40 - aquire_DRMI_1f, 4
- 05:43:30 - OFFLOARD_DRMI_ASC
- 05:52:11 - ENGAGE_ASC_FOR_FULL_IFO
- starting at 05:52:32: E_X, I_Y, I_X, E_Y, E_X, O_M_C, I_Y,...
- not sure why this happened
- ending at 05:53:39 - DRMI unlocked
- 05:54:49 - locking arms green, 5
- 05:56:44 - DOWN
- 05:57:49 - locking arms green, 6
- 06:03:40 - INIT
- 06:06:06 - Initial Alignment
- 06:31:01 - INIT
- 06:32:31 - Initial Alignment
- 07:27:52 - INIT
- from 06:00 to end of shift, tried to run Initial Alignment
- PRX would not lock, until I restored the LSC gain of 5250000
- even after restoring this gain, when PRX waslocked, the guardian was stalled, and would not move to aligning PRX
- found that the input to PRCL1 is really small, 0.0015, thus the high gain
- I tried aligning PRM, no effect
- 08:00:00 - handed off to Corey
Attachments:
- 2 plots attached show power spectra and coherance of CAL_DELTA and POP_A_PIT in NLN from 7/21 to 8/6, I made these because POP_A_PIT has gotten noisier. Note coherence with CAL_DELTA and POP_A_PIT in the first plot, bottom right plot
- 2 plots of changes made during attempts to get to NLN
- 2 plots of POP_A_PIT, first one showing that it used to be positive, and is now negative, though small, second one showing POP_A_PIT in trends
Images attached to this report
