Wed May 22 10:08:52 2024 INFO: Fill completed in 8min 48secs
Gerardo confirmed a good fill curbside.
TITLE: 05/22 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 21mph Gusts, 17mph 5min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.14 μm/s
QUICK SUMMARY:
Back to NLN at 15:20UTC and back into Observing after some SQZer aligning at 16:02 UTC
Lockloss at 16:16 UTC just before 1 hour of lock time, HAM6 verbal callout before?
HAM6 ISI saturations during a lockloss are fairly common. Fast shutter launching can cause a handful of GS13 and actuator saturations, which is probably what the HAM6 verbal notification was for.
TITLE: 05/22 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Corey
SHIFT SUMMARY: Two locklosses with currently unknown causes this shift, otherwise relatively quiet. H1 is currently relocking up to START_TR_CARM.
LOG:
No log for this shift.
Lockloss @ 07:49 UTC - link to online lockloss tool
No obvious cause; much like last time, LSC-DARM saw the first motion.
FAMIS 20029
No major events of note this week; PMC REFL continues to rise as it has been.
I did some additional trending to look a bit closer at what else possibly lines up with the PMC REFL increase, but so far those have proved inconclusive, providing further evidence that there's some on-table alignment shift happening.
Lockloss @ 01:38 UTC - link to online lockloss tool
No obvious cause; LSC-DARM saw the first motion.
H1 back to observing at 03:00 UTC
[Sheila, Jenne, Betsy, TJ]
Today we had a saga of trying to move even closer to center on PR2, however we were struggling to lock DRMI when relocking, so we've reverted to the alignment situation we were in for our long lock last night. Since that work took longer than anticipated, we still have not yet remeasured our position on PR2 and PRM, so we plan to do that next time we're commissioning.
H1 is now back to observing as of 00:09 UTC following input alignment changes and other maintenance today.
After we reached low noise, I took 10 minutes of no-SQZ time from 23:55 to 00:05 UTC.
MinhyoK, FranciscoL, [Remote: DriptaB]
After one week of moving the inner beam 5 mm to the right of the Rx (see alog 77840), we moved the beam to the center. This will help to evaluate the reproducibility of this procedure and the risks from moving the beam at the ETM.
Attachment 'BothBeamsBefore' shows the beams before making any changes. (image taken before step (1))
The pdf 'EndStationLog.pdf' lists the voltage values after each significant step of procedure T2400163. The steps are represent writing down a voltage value after a particular change of the system:
The initial measurement (done on step 'Pre') agree with the last voltage measurement from the previous movement, done on May 14 (see alog 77840), by a factor of 3 HOPs.
The changes we saw from making the movement of last week will be reported as a comment to alog 77840. In summary, our values disagree by a relative difference (measured/expected -1) of 15%.
With the movement made today, we expect that the X/Y comparison will return to a value of 1 in the upcoming week.
TITLE: 05/21 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: Maintenance activities were light, but the was some work to try and get the PR2 spot moved closer to the center that had some alignment consequences. We have been trying to recover the IFO since the moves but unable so far. Right now Jenne is working to revert us back to our configuration we were in last night and then we can try with that.
LOG:
Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
---|---|---|---|---|---|---|
14:58 | FAC | Chris | EY | n | Bringing lift to EY (started near CS @~740) | 16:58 |
14:59 | FAC | Karen | EY | n | Tech clean | 16:17 |
14:59 | fAC | Kim | EX | n | Tech clean | 16:17 |
15:03 | FAC | Ken | LVEA | n | Cable tray install BSC1 | 19:03 |
15:06 | VAC | Jordan | FCES | n | Grab parts | 15:19 |
15:29 | CDS | Erik | - | n | Wifi IOC restart | 15:32 |
15:33 | CDS | Erik | MY,MX | n | Wifi access point work | 18:50 |
15:36 | PCAL | Francisco, Minyo | EX | YES | PCAL spot move | 17:29 |
15:46 | VAC | Travis | LVEA | n | Measurements of equipment near FCT | 16:35 |
16:11 | FAC | Bubba, Betsy, Apollo | EY, LVEA | n | Scaffolding check (d module) | 17:32 |
16:12 | IAS | Jason, Ryan C | LVEA | n | move Faro back to W bay | 17:50 |
16:30 | FAC | Christina | MX,MY | n | Property tags | 17:59 |
16:33 | FAC | Kim, Karen | LVEA | n | Tech clean | 18:13 |
16:36 | - | Mitchell | EY,EX | n | FAMIS tasks | 16:37 |
17:30 | VAC | Travis | LVEA | n | Measure equipment | 17:38 |
17:40 | CDS | Marc | EY | n | Power supply temp checks | 18:02 |
18:13 | FAC | Karen, Kim | FCES | n | Tech clean | 18:42 |
TITLE: 05/21 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 20mph Gusts, 16mph 5min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.08 μm/s
QUICK SUMMARY: After some alignment changes today (and reversions) during maintenance day today, H1 has just finished initial alignment and starting lock acquisition.
During maintenance and during relocking today we tested out a few new features in both guardian land and for Verbal. Here's a summary and status of each:
Guardian
Verbal
Maintenance finsihed up around 1145PT, but some input mirror movements done by commissioners are still trying to get the beam back. We will resume locking as soon as we can.
CDS Wifi access points at both mid stations are down for maintenance waiting on parts. If you need to use a CDS laptop at either mid station, ask Jonathan, Erik or Dave for help
Tue May 21 10:09:01 2024 INFO: Fill completed in 8min 57secs
Travis confirmed a good fill curbside.