TITLE: 03/30 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: None
SHIFT SUMMARY:
IFO is in NLN and OBSERVING as of 06:08 UTC (56 min lock)
Lock Acquisition and Issues with PRMI Locking - Part 2
Check Midshift Update (alog 76807) for Part 1
The same weird brief PRMI behavior happened and it just couldn’t lock. I let guardian do its automation thing through MICH Fringes, but after PRMI unlocked 4 more times and couldn’t even recover PRMI from Down like last lock, I ran an initial alignment. While it was a slow initial alignment, it seemed to fix something because locking was extremely smooth (DRMI locked without PRMI).
It is worth mentioning that throughout my two lock acquisitions today, DRMI could not lock following PRMI/MICH - either DRMI locked immediately or we lost lock/got stuck some time after trying to lock PRMI.
LOG:
03:42 UTC - DRMI Unlocked, cause unknown
03:56 UTC - Lockloss at ENGAGE_DRMI_ASC after getting DRMI locked
04:52 UTC - Running initial alignment - locking getting nowhere and failing at PRMI, showing the same strange noisy trace
05:23 UTC - Initial Alignment complete - took an uncharacteristic 35 minutes
06:04 UTC - NLN Reached (41 mins from down!)
06:08 UTC - H1 is OBSERVING
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 17:26 | ops | LVEA | corner | YES | LVEA is Laser HAZARD !!!! | 15:24 |
| 20:10 | PEM | Robert | LVEA | YES | PEM Injections | 20:43 |
| 20:44 | PRCL | Elenna | Remote | N | PRCL Investigations | 20:56 |
| 20:57 | SQZ | Naoki | CrtlRm | N | 100/100 ASQZ | 21:21 |
| 21:24 | CARM | Jenne W | CtrlRm | N | Common mode board tests | 21:25 |
| 21:29 | SQZ | Naoki | CtrlRm | N | 125/125 ASQZ | 21:52 |
| 21:53 | PEM | Robert | CtrlRm | N | Shaking Injection on the input arm. | 22:10 |
| 22:19 | PRCL | Elenna | Remote | N | PRCL Measurements. | 22:33 |
| 22:35 | SQZ | Naoki | CrtlRm | N | Quiet Time no Sqz | 22:51 |
| 22:52 | PEM | Robert | CtrlRm | N | PEM Shaking input side @ 12.6hz | 23:00 |
| 23:18 | PCAL | Tony, Francisco | Pcal Lab | Local | Getting LLO Intergrating Sphere | 00:18 |
| 23:47 | PEM | Robert | LVEA | YES | Taking photos | 00:47 |