ibrahim.abouelfettouh@LIGO.ORG - posted 15:03, Monday 13 July 2026 - last comment - 17:14, Monday 13 July 2026(91002)
OPS Day Shift Summary
TITLE: 07/13 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:
IFO is in IDLE for MAINTENANCE
Productive day in which:
- Corner pumpdown continued
- HAM6 vacuum sensor PT110 - detected an increase/bounce of pressure. I informed Travis and VAC is looking into it. Screenshot is attached.
- HAM1 pumpdown started
- The LVEA is now in OPERATIONS SAFE, meaning all viewports and "holes" were confirmed affixed and closed. The lightpipe and lasers have not been turned on. Alog 90994
- Marc finished modification to the QOSEM whitening chassis and BBSS controls look healthy.
- DM10 Dust has been sitting at ~6800 counts for 1 hr (threshold is 300). Richard went out to investigate. A screenshot is attached in which the actual counts are on the left and the thresholds are on the right.
- HAM7 ZM5 work is ongoing.
- Biergarten PEM work on seismometers is ongoing.
Oli is taking over the remainder of this shift and will add comments if relevant.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 14:57 | VAC | Jordan | LVEA | N | Continuing Pumpdown | 14:52 |
| 14:52 | FAC | Kim | LVEA | N | Technical Cleaning | 15:55 |
| 15:52 | TCS | Matt | CHETA Lab | Local | Aligning | 16:27 |
| 16:14 | FAC | Kim | LVEA | N | Technical Cleaning | 17:04 |
| 16:25 | TCS | Camilla | CHETA Lab | Local | Aligning | 16:27 |
| 16:29 | SEI | Shrey, Carlos, Miranda | LVEA | N | Seismometer Checks | 17:54 |
| 16:36 | SUS | Rahul | LVEA | N | ZM5 Work HAM7 | 18:29 |
| 16:39 | SUS | Ryan C | LVEA | N | ZM5 Work HAM7 | 18:24 |
| 16:57 | EE | Fil | LVEA | N | HAM4 TCS Rack | 18:29 |
| 17:12 | OPS | Ryan S | LVEA | N | Laser Transition to Operations Safe | 17:58 |
| 17:16 | VAC | Travis | Ey | N | Parts | 17:58 |
| 17:37 | SUS | Mitchell | EX/EY | N | FAMIS Task | 18:19 |
| 17:40 | FAC | Kim | LVEA | n | Grabbing garb | 17:52 |
| 17:53 | FAC | Kim | EX | n | Tech clean | 18:21 |
| 17:53 | EE | Marc | LVEA | N | Whitening chassis change | 18:45 |
| 18:01 | VAC | Travis | LVEA | n | Troubleshooting pumps | 18:29 |
| 18:06 | TCS | Matt | Prep Lab | y(local) | CHETA work | 19:23 |
| 18:07 | SPI | Jennie | LVEA | n | Unshuttering SPI laser | 18:10 |
| 18:16 | Madi | OpticsLab | n | Grabbing laptop | 18:22 | |
| 18:23 | VAC | Gerardo | LVEA | n | Troubleshooting pump | 18:29 |
| 18:24 | RyanC | LVEA | n | Grabbing phone | 18:27 | |
| 19:10 | FAC | Camilla, Tyler | LVEA | N | Scaffolding tagging + camera cans -tyler out 19:16utc | 19:21 |
| 19:50 | EE | Fil | MSR | N | Cabling | 21:47 |
| 20:15 | VAC | Gerardo | LVEA | N | HAM1 Pump | 22:15 |
| 20:16 | SUS | Ryan C | LVEA | N | ZM5 Work HAM7 | 22:16 |
| 20:20 | VAC | Travis | LVEA | N | HAM1 Pump | 22:10 |
| 20:21 | FAC | Christina | Optics, LVEA, MSR | N | Label Photos | 21:32 |
| 20:30 | PEM | Shrey, Carlos, Miranda | LVEA | n | Seismometers | 22:30 |
| 20:36 | SUS | Rahul | LVEA | N | ZM5 Work | 22:36 |
| 20:58 | FAC | Richard | LVEA | N | Checking on DM10 | 21:10 |
| 21:14 | EE | Marc | LVEA | n | Reinstalling BBSS M1 satamp | 21:31 |
| 21:47 | SUS | Betsy | LVEA | N | HAM1 Pump | 22:47 |
Images attached to this report
Comments related to this report
Power glitch at 22:31 UTC, tripping the HEPI pump controller and both ISI stages of ETMX and ETMY. Tony, RyanS, and TJ went down to the end stations and turned the pump controllers back on. Then I was able to bring HEPI and the ISIs back up.
Extra reservation system entries:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 22:44 | SEI | RyanS, Tony | EX | n | Restarting HEPI controllers | 23:48 |
| 22:49 | SEI | TJ | EY | n | Restarting HEPI controllers | 23:48 |
| 23:16 | PEM | Carlos, Miranda, Shrey | LVEA | n | Seismometer work (Miranda back 23:37) | 00:00 |