Reports until 16:00, Monday 11 March 2024
H1 General
ryan.crouch@LIGO.ORG - posted 16:00, Monday 11 March 2024 (76245)
OPS Monday day shift summary

TITLE: 03/11 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: None
SHIFT SUMMARY:

15:00UTC Started off the day in a Manual Initial Alignment

For the intial alignment this morning, yarm was found by hand and we had to lower the locking threshold from 0.7 to 0.5 from the ALS YARM PHD medm screen (this was reverted shortly after). To get MICH_BRIGHT to lock I had to move the BS quite a bit in Pitch (>2 microradians), for SRC locking guardian prompted me to center SR2 by hand so I misaligned SRM and adjusted SR2 to center it on AS-AS_C, which I had to move a lot in pitch again (312.2 -> 292.7).

16:30UTC After finishing IA Shiela start to work on the OMC suspension IM alignment / saturation issue

18:20 ISI HAM7 WD tripped, probably from SQZ rack workpause

Struggled to lock DRMI or PRMI even after CHECK_MICH, so we started another IA at 18:50UTC finished at 19:14UTC, Locked DRMI on the first try after this IA

Lockloss at 21:14

Struggled to get good buildups with PRMI, ASC would kill it. I tried to hold at PRMI_LOCK and touch up the BS and PRM by hand looking the slow building ups scope but I was not able to do it effectively/fast enough?

I'm starting another IA at 22:25UTC which is still ongoing as of 00:0UTC and almost finished

  LOG:         

Start Time System Name Location Lazer_Haz Task Time End
15:01 FAC Karen Optics lab N Tech clean 15:32
17:35 FAC Kim MidX N Tech clean 18:17
17:35 FAC Karen MidY N Tech clean 18:18
17:58 SAF Chris FCES N Safety checks 18:58
18:14 SQZ Nutsinee SQZ racks N Transfer functions 19:14
20:07 FAC Tyler EndY N Check 21:07
22:04 SQZ Nutsinee SQZ racks N Transfer functions 22:25