Reports until 16:43, Friday 13 March 2026
H1 General (IOO, ISC)
anthony.sanchez@LIGO.ORG - posted 16:43, Friday 13 March 2026 (89504)
Friday Ops Day shift report.

TITLE: 03/13 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:
The Commissioning crew today were focused on trying to get PRMI locked and stable for most of the day. Thye touched up the REFL A alignment which helped. 
But there seems to be some power lost somewhere.

This spreadsheet was created to document the difference in the ratio of  IMC Trans power/IMC input power back in the O4 run and now.  Specifically when the PSL is set to 2 Watts. Feel free to update this in the future.

 The Gain for H1:ALS-C_TRX_A_LF_GAIN has been bumped from 1.5 to 3 to get past FIND IR without issue.
This may not be the only gain that has been turnt to 11 to get DRMI to almost lock today,  Sheila will be posting an alog later with some laser power acounting that may shed more light on that situation. Yes the Pun was intended.

LOG:                                                                                                                                                                                 

Start Time System Name Location Lazer_Haz Task Time End
14:39 FAC Randy Xarm N Plowing the Tumbleweeds 17:02
15:06 H2O Water contrators Well N Testing the well water 18:06
17:04 VAC Travis Cleaning Racks & west bay, All ES and Mids N Looking for parts 19:34
17:26 FAC Randy LVEA N Walk about in the LVEA 17:49
18:28 PEM Ryan CER N Checking Dust mons 18:31
18:32 SPI Jeff & Josh Optics Lab Yes Working on SPI setup. 23:07
18:43 ISC Sheila & Oli LVEA Yes Tweaking alignments on ISCT1 19:09
18:50 OPS LVEA IS Birfurcated HAZARD HAM1 LOCAL LVEA Bifurcated LASER HAZARD 11:29
19:37 EE Marc LVEA & CER N placing stickers and parts. 20:07
20:36 EE Fil & Marc Mid Y N getting cables. 21:14
20:49 VAC Gerardo EndY N Anulus ion pump controller testing, unplug replug 21:24
21:15 PEM Ryan C LVEA N chasing cables 22:25
23:24 Cheta Sophie Cheta Lab local Workign on Cheta 00:24