thomas.shaffer@LIGO.ORG - posted 16:33, Wednesday 02 September 2026 (91786)
Ops Day Shift Start
TITLE: 09/02 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:
- ALS Y arm was locked on arrival, but there was no light in X. Keita, Louis, and I tried trending the ITMX, ETMX, and TMSX as well as relavent oplevs to figure out where the light went and ultimately decided to runa another baffle alignment. Ran a TMS, ITM, ETM baffle alignment, but the ETM alignment script could not find the PDs. Keita found the PDs by hand using the oplevs to help with reference assuming sticking in the OSEMs. This brought a tiny amount of light back to ALSX which Keita then maximized.
- Next check was to look for clipping in the POP path before the gate valve closes.
- Gate valve 20 closed at 2056UTC
- Louis and Jenne worked on doing a Y arm input alignment.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:07 | FAC | Kim | Opt Lab | n | Tech clean | 15:30 |
| 16:31 | - | Tyler, Dolly, +1 | LVEA | n | Tour | 17:31 |
| 17:04 | FAC | Kim | EX | n | Clean in prep for vent | 19:00 |
| 17:47 | SPI | Marc, Jennie | LVEA | n | Taking picture of SUS R2 rack | 17:58 |
| 18:18 | ISC | Sheila, Louis | LVEA | Local | ISCT1 table alignment | 18:59 |
| 20:18 | VAC | Gerardo, Jordan | EX | n | Closing GV20 and setting up TMDS | 00:18 |
| 20:34 | FAC | Chris | EX | n | Top of chamber cleaning | 21:29 |
| 20:35 | SPI | Jennie | LVEA | n | SUS R2 rack SPI | 22:00 |
| 20:38 | PSL | Jason | Opt Lab | n | Checking on EOM for next week | 20:54 |
| 20:46 | TCS | Camilla, Jackie | Prep Lab | YES | CHETA lab laser work | 23:26 |
| 21:04 | - | Tony | LVEA rec. | n | Comm system organization | 21:08 |
| 21:41 | SUS | Daniel, Rahul | EX | n | TMDS setup | 22:23 |
| 23:18 | SPI | Jennie | LVEA | n | SPI electronics rack work | 00:28 |