Cabling between BSC3 and BSC7 now supported by a cable tray. See attached picture. Cabling previously held in place by zip ties and velcro. Concern if zip ties failed, vacuum piping on GV2 could be damaged. Good catch by the vacuum team.
During installation of cable tray, found that both SUS-R5 and SUS-R6 racks were not grounded. After discussing with Robert/Richard, we decided to ground the racks. Robert will compare before/after once we reach NLN.
If grounding of racks needs to be reverted, the 6 awg grounding cables can be disconnected at each rack.
While investigating the signal on the Y Manifold Cryo Acclerometer, we found that the power conditioner module was not functioning. We moved the signal to a spare channel and verified that the rest of the signal chain is working.
Robert wants to get the LigoCam software working before we make any other changes to the PEM system, so we are holding off on replacing the channel.
The Y Manifold Cryo Accelerometer signal input and output was moved from S2300063 Channel 15 to S2300065 Channel 15 (one chassis down)
I placed a rubber BNC cover on the bad channel to mark it for repair once we get the green are sure the LigoCam software is working correclty.
The LVEA was swept by Camilla, she will add notes.
Relocking has started.
As last week 77210, the Faro is staying plugged in. Robert still has some PEM things plugged in (speaker near +X arm and some electronics in the CER).
The SR785 Ethernet cord is plugged into the PSL rack but powered off.
I unplugged an unused extension cord and turned the lights off.
Jennie, Jenne, Keita, Camilla
Following 76883, we repeated by moving IM1 Pitch and Yaw then IM2 Pitch and Yaw in turn and recentering the beam on the IM4 TRANS QPD using IM3. Went in both directions until we either saturated the suspension or starting clipping on the Faraday.
Results: We are not close to clipping FI so reverted the alignment to the original (though TJ said these IMs can have hysteresis).
Steps taken:
Minhyo, Sheila
Changed the gain values of the RANGE BLRMS's filters (RLP_1 ~ 7) at 17:48:44 (UTC).
I referenced the accumulated BNS range in Apr.-11 and Apr.-17, to reverse calculated the additional factors for the filter gains (1/BNS = scope * factor).
The New gain values are defined as (Prev. gain) * (Avg. Factor).
Attached three screenshots are; 1) Accumulated BNS range plot, 2) Factor calculation, 3) H1OAF.diff after made all changes.
Tue Apr 23 10:11:09 2024 INFO: Fill completed in 11min 5secs
Karmeng, Camilla. H1:SQZ-SHG_FIBR_REJECTED_DC_POWERMON power was high. Adjusted the 1/2 and 1/4 waveplate to reduce rejected power from 0.3 to 0.03. Instruction
Vicky questioned if we need to realign the pump AOM /SHG fiber eg.74479.
With the OPO guardian DOWN, OPO REFL DC POWER is 2.26V, our max is around 2.9V 75270.
We should plan on realigning AOM and fiber next week.
WP11816 Add CAL GDS_HASH channel to DAQ and GDS Broadcaster
Jamie, Erik, Jonathan, Dave
A new channel, H1:CAL-CALIB_REPORT_GDS_HASH_INT, as added to the cal_hash_ioc EPICS IOC. It was added to the DAQ via EDC, and also added to the DAQ GDS-Broadcaster for transission to GDS.
The new channel is being monitored by the CDS SDF.
WP11821 New h1asc model
Jeff, Dave:
We installed Jeff's new h1asc model. DAQ restart was required for the addtion of 4 slow chanels.
WP11822 FMCS STAT upgrade
Erik, Dave:
Erik installed new FMCS STAT code. This also added new channels to the DAQ, requiring a DAQ+EDC restart.
DAQ Restart
Jonathan, Dave:
Jonathan made the recent GDS Broadcast channel additions permanent in puppet and regenerated the GDS channel lists.
We restarted the DAQ and EDC for the above changes. No issues with this restart.
One issue I found with the h1asc change is that the gain for the ASC_DHARD EC20Hz filter changed at the 15th decimal place. I followed my standard procedure of ensuring H1ASC.txt was committed to subversion, did the 'rtcds install h1asc' which modifies the filter file header block, then corrected this by running 'foton -c H1ASC.txt'. After this the only svn diff in the file is the gain change
-ASC_DHARD_Y 7 12 5 10240 0 EC20Hz 4.246651939748587456513462e-01 -1.9976820160389552 0.9977451970061935 -1.9973471518970052 0.9974295203382628
+ASC_DHARD_Y 7 12 5 10240 0 EC20Hz 4.246651939748589676959512e-01 -1.9976820160389552 0.9977451970061935 -1.9973471518970052 0.9974295203382628
Tue23Apr2024
LOC TIME HOSTNAME MODEL/REBOOT
08:00:38 h1asc0 h1asc <<< New asc model
08:05:00 h1daqdc0 [DAQ] << 0-leg restart
08:05:13 h1daqfw0 [DAQ]
08:05:13 h1daqtw0 [DAQ]
08:05:14 h1daqnds0 [DAQ]
08:05:22 h1daqgds0 [DAQ] <<< new BROADCAST ini
08:05:27 h1susauxb123 h1edc[DAQ] <<< EDC for cal_hash and fmcs_stat changes
08:11:21 h1daqdc1 [DAQ] <<< 1-leg restart
08:11:31 h1daqfw1 [DAQ]
08:11:32 h1daqtw1 [DAQ]
08:11:33 h1daqnds1 [DAQ]
08:11:59 h1daqgds1 [DAQ] <<< new BROADCAST ini
TITLE: 04/23 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Idle
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
SEI_ENV state: MAINTENNANCE
Wind: 5mph Gusts, 3mph 5min avg
Primary useism: 0.01 μm/s
Secondary useism: 0.10 μm/s
QUICK SUMMARY: IFO lost lock a few hours ago and has been losing lock around transition to ETMX even though it isn't windy. I've put it into IDLE since maintance activities have already began.
Workstations were updated and rebooted. This was an OS package update. Conda packages were to affected.
TITLE: 04/23 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 150Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY:
Lots of EQs from Taiwan today, only 1 lockloss from them. The range has been lower today, the high frequency squeezing doesn't look as good as usual.
Lock#1
Lock#2
3 more EQs from Taiwan (4.5, 5.8, 5.2) came through while I was trying to relock.
LOG:
Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
---|---|---|---|---|---|---|
21:32 | SQZ | Camilla, Terry, Kar Meng | Opt Lab | Local | SHG alignment | 23:44 |
01:00 | Patrick | Mid | N | Talking a walk | 01:49 |
Right click on an MEDM window, select Execute -> Search Model.
Then click on a channel. A browser will pop up showing the design of the model that generates the channel.
Thanks to Takahiro Yamamoto for the code.
You might have to log out and log back in to see it.
We've been locked and observing for 1:40 following the lockloss at 00:22 UTC, range is lower this lock (High frequency SQZing doesn't look the best).
No obvious cause, https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1397866956
Back into Observing at 01:37UTC
Closes FAMIS 26296
No big items to note.
The noisiest fan for the OUT buildings was MY_FAN2_270_1
The noisiest fan for the CS buildings were MR_FAN5_170_1
TITLE: 04/22 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 158Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Was able to relock this afternoon during a lull in earthquakes from Taiwan just in time for a candidate event to come in. BNS range is on the lower side; Camilla comments that SQZ doesn't seem to be tuned well.
LOG:
Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
---|---|---|---|---|---|---|
15:43 | 15:43 | |||||
15:44 | fac | karen | MY | n | clean | 16:48 |
16:16 | pcal | tony | PCalLab | y | Measurement set-up | 19:31 |
17:26 | fac | tyler | MY | n | ladder inspection | 18:06 |
21:32 | SQZ | Camilla, Terry, Kar Meng | Opt Lab | Local | SHG alignment | Ongoing |