thomas.shaffer@LIGO.ORG - posted 16:30, Thursday 07 August 2025 (86243)
Ops Day Shift End
TITLE: 08/07 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 151Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: Locked for 4 hours, observing for 35min. Had a bit of a pivot today since we needed to clear some tumbleweeds from the overpass. This took up much of our commissoining time, as well as an earthquake delaying lock reacquistion, so we were approved for some afternoon commissioning.
LOG:
- 1530 Calibration
- 1615 Lock loss - alog86240
- While relocking an earthquake rolled through and delayed relocking a bit
- I needed to run a check MICH, then PRMI where I touched up PRM, then it locked fully.
- 1936 Recovered back to low noise, time for commissoining
- 2255 Observing
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 19:33 | SAF | Laser HAZARD | LVEA | YES | LVEA is Laser HAZARD | 11:33 |
| 15:02 | SPI | Jeff | Opt Lab | YES | Fiber collimation | 18:41 |
| 15:35 | PEM | Robert | LVEA | YES | Measurement setup and peeking through viewports | 18:34 |
| 15:42 | FAC | Chris, Randy | Overpass | n | Tumbleweed clearing | 18:35 |
| 16:09 | VAC | Janos, Anna | MX, MY | n | Taking a look | 16:37 |
| 16:13 | FAC | Kim, Nelly | OSB rec. | n | Opening rollup door and driving out stuffs | 16:53 |
| 18:05 | ISC | Jennie, Francisco | Opt Lab | YES | Using laser and oscilliscope | 18:05 |
| 18:48 | VAC | Gerardo | LVEA | yes | Checking on turbo pumps | 18:58 |
| 19:34 | PEM | Robert | LVEA | YES | Pictures at view ports | 21:34 |
| 20:38 | ISC | Elenna | LVEA | YES | Plugging in cable at PSL racks | 20:58 |
| 20:58 | FAC | Tyler | EY | n | Chiller yard check | 21:28 |
| 22:00 | ISC | Elenna | LVEA | YES | Unplugging cable at PSL racks | 22:05 |
| 22:27 | PEM | Robert | LVEA | YES | Shutting measurements down | 22:33 |
| 22:28 | PCAL | Francisco | PCAL lab | Yes | PCAL or SPI | 22:31 |
| 23:05 | ISC | Jennie | Opt Lab | YES | ISS array work | 23:24 |