TITLE: 10/31 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Currently relocking and at DARM_TO_RF. Spent most of the day unlocked, with two locklosses and multiple hours of downtime while trying to figure out the FSS issues. Relocking since that work finished has gone great so far.
A couple minutes after Jenne and Betsy left the PSL laser room(and maybe also antetroom), we did notice the FSS PZT have the huge oscillations for about two minutes(attachment), similar to those we had been seeing on the backup FSS boxes(probably alog to come). Jenne is not sure what that means in the case of this FSS box, but mentioned that it might have been due to turning off the air conditioning or something else related to them being in there.
LOG:
14:30 Close to end of an initial alignment
14:40 Initial alignment done, relocking
15:25 NOMINAL_LOW_NOISE
15:32 Observing
16:01 Dropping Observing for Commissioning
16:22 Lockloss
17:17 Took to DOWN and started manual initial alignment due to DRMI being bad and PRMI ASC having trouble
17:31 manual IA done, started relocking
18:13 NOMINAL_LOW_NOISE
18:35 Lockloss from little earthquake+low CARM gain actuation range
18:38 Started an initial alignment
FSS unlocked due to measurement cable being plugged in and was unlocked for an hour
20:05 FSS relocked, started manual initial alignment for PRC, MICH, SRC
20:21 Left manual initial alignment for IDLE for PSL FSS box swap
22:59 PSL incursion done, started an initial alignment
23:17 Initial alignment done, relocking
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:28 | FAC | Karen | OptLab/VacPrep | n | Tech clean | 15:50 |
| 16:02 | PEM | Robert | LVEA | n | Setting up for injections | 16:20 |
| 16:28 | PSL | Sheila, Vicky | LVEA | n | Setting up for measurements | 16:37 |
| 17:01 | FAC | Karen | WoodShop | n | Tech clean | 18:02 |
| 18:41 | PSL | Jenne, Sheila, Vicky | LVEA | n | Connecting cable for FSS transfer functions | 18:59 |
| 20:02 | ISI | Jim | HAM Shack | n | Move measurement equipment | 20:40 |
| 20:36 | PSL | Betsy, Jenne | PSL Encl | y(local) | Swapping FSS box | 22:58 |
| 20:39 | EE | Fil, Rick, Daniel, Fernando | CER, LVEA | n | Turning off HV, looking at PSL rack layout (Fil out 21:13), Rick out | 22:12 |
| 20:59 | Richard | LVEA | n | Looking at PSL light pipes | 21:15 | |
| 21:03 | FAC | Tyler | CER | n | Investigating burning smell | 21:07 |
| 21:16 | EE | Fil | LVEA | n | Looking at SQZ racks | 21:56 |
| 21:22 | EE | Rick, Fil | CER | n | Turn HV back on | 21:25 |
| 21:48 | EE | Fil | LVEA | n | Taking other FSS box out to PSL | 22:29 |
| 21:58 | EE | Marc | LVEA | n | Helping with FSS box | 22:14 |
| 21:58 | Rick | CER | n | Turning off high voltage | 22:12 | |
| 22:16 | EE | Rick, Marc | CER | n | Turning HV back on | 22:21 |
| 22:35 | EE | Rick, Fil | CER | n | Turnign off HV | 22:54 |
