Displaying reports 17521-17540 of 88618.Go to page Start 873 874 875 876 877 878 879 880 881 End
Reports until 10:42, Tuesday 03 October 2023
H1 CDS (PSL, TCS)
filiberto.clara@LIGO.ORG - posted 10:42, Tuesday 03 October 2023 - last comment - 17:28, Tuesday 03 October 2023(73233)
Grounding of EtherCAT Electronis in CER

WP 11455
WP 11457

The remaining two slow controls chassis were grounded via a wire braid to a grounding terminal block. Same as what was done in alog 68096, alog 66402 and alog 66469. This scheme provides a low resistance path to the grounding block. The anodized racks prevent a solid grounding connection via the mounting screws. The PSL and TCS slow controls were grounded using new scheme. See attached pictures. This completes all slow controls chassis in CER and End Stations.

Images attached to this report
Comments related to this report
jeffrey.kissel@LIGO.ORG - 11:06, Tuesday 03 October 2023 (73234)DetChar
Link 

Tagging DetChar -- with the CW group in mind. 
After this maintenance day, there might be a change in comb behavior as a result of this work.

This is action taken as a result of Keita, Daniel, and Ansel's work on ID'ing combs from the OM2 heater system -- see LHO:72967.
keita.kawabe@LIGO.ORG - 17:28, Tuesday 03 October 2023 (73257)AWC, CDS, DetChar-Request, ISC
Link

After Fil was done with the grounding work, I temporarily restored the connection between the beckhoff cable and the heater chassis and used a normal breakout board to measure the voltage between the driver ground (pin13) and the positive drive voltage (pin 6) of D2000212, just like I did on Aug 09 2023 (alog 72061).

1st attachment is today, 2nd attachment is on Aug 09. I see no improvement (OK, it's better by ~1dB today).

After seeing this, I swapped the breakout board back to the switchable one I've been using to connect only a subset of pins (e.g. only thermistor 1). This time, there's no electrical connection between any pins but the cable was physically attached to the breakout board. No connection between the cable shell and the chassis connector shell either. I expect that the comb will be gone, but I'd like detchar to have a look.

The heater driver is driven by the voltag reference on the nearby table, not Beckhoff.

Images attached to this comment
H1 TCS
ryan.crouch@LIGO.ORG - posted 10:34, Tuesday 03 October 2023 (73231)
TCS Bi-Weekly chiller topoff FAMIS 26158

Closes FAMIS 26158

There was no water in the cup in the corner.

  TCS X TCS Y
Previous Level 29.6 9.5
New Level 30.0 10.0
Water added 150mL 150mL
H1 CDS
patrick.thomas@LIGO.ORG - posted 10:26, Tuesday 03 October 2023 (73228)
Updated pylon-camera-server on h1digivideo3 from 0.1.11 to 0.1.13. 
Closes WP 11450.

Ran 'apt-get install pylon-camera-server' as root on h1digivideo3. The code for each camera was restarted by the service manager. No issues were seen. This update is intended to fix a possible threading issue that may have been a source of 'NaN' input. See this commit for the relevant change.
LHO VE
david.barker@LIGO.ORG - posted 10:20, Tuesday 03 October 2023 (73230)
Tue CP1 Fill

Tue Oct 03 10:11:18 2023 INFO: Fill completed in 11min 14secs

Travis confirmed a good fill curbside.

Images attached to this report
H1 CDS
david.barker@LIGO.ORG - posted 10:17, Tuesday 03 October 2023 (73229)
PSL Beckhoff slow_controls SDF restarted with new channel list

WP11456

Ryan S, Jason, Dave:

the h1pslopcsdf slow_controls SDF process on h1ecatmon0 was restarted at 10:09 with the new channel list (three WD_enabled channels). SDF table is attached. This has cleared the not_connected error we have been seeing with this sdf.

Images attached to this report
H1 SQZ
camilla.compton@LIGO.ORG - posted 10:00, Tuesday 03 October 2023 (73227)
Realigned the SQZ Pump Fiber Polarization

Oli, Vicky, Camilla

Since Naoki and I adjusted the SHG AOM and fiber alignment last week 73118, the HAM7 H1:SQZ-SHG_FIBR_REJECTED_DC_POWER is saturated.  Oli reduced the rejected power using the two pico waveplates on the SQZT0 SHG to OPO path. Started by maximizing OPO transmission with opo in LOCKED CLF DUAL NO ISS until the SHG_FIBR_REJECTED wasn't saturated. Reduced SHG_FIBR_REJECTED from 0.7 to 0.03mW. 

Images attached to this report
H1 AOS
jason.oberling@LIGO.ORG - posted 09:12, Tuesday 03 October 2023 - last comment - 08:36, Thursday 05 October 2023(73226)
ITMx Optical Lever Laser Replaced (WP 11454)

J. Oberling, F. Mera

This morning we swapped the failing laser in the ITMx OpLev with a spare.  The first attached picture shows the OpLev signals before the laser swap, the 2nd is after.  As can be seen there was no change in alignment, but the SUM counts are now back around 7000.  I'll keep an eye on this new laser over the next couple of days.

This completes WP 11454.

Images attached to this report
Comments related to this report
jason.oberling@LIGO.ORG - 13:09, Tuesday 03 October 2023 (73242)
Link

J. Oberling, R. Short

Checking on the laser after a few hours of warm up, I found the cooler to be very warm, and the box housing the DC-DC converter that powers the laser (steps ~11 VDC down to 5 VDC) was extremely warm.  Also, the SUM counts had dropped from the ~7k we started at to ~1.1k.  Seeing as how we just installed a new laser, my suspicion was that the DC-DC converter was failing.  Checking the OpLev power supply in the CER it was providing 3A to the LVEA OpLev lasers; this should only be just over 1A, which is further indication something is up.  Ryan and I replaced the DC-DC converter with a spare.  Upon powering up with the new converter the current delivered by the power supply was still ~3A, so we swapped the laser with another spare.  With the new laser the delivered current was down to just over 1A, as it should be.  The laser power was set so the SUM counts are still at ~7k, and we will keep an eye on this OpLev over the coming hours/days.  Both lasers SN 191-1 and SN 119-2 will be tested in the lab; my suspicion is that the dying DC-DC converter damaged both lasers and they will have to be repaired by the vendor, will see what the lab testing says.  New laser SN is 199-1.

austin.jennings@LIGO.ORG - 23:48, Tuesday 03 October 2023 (73260)
Link

Noticing as the night progresses, the sum counts are slowly going up, starting from ~6200 and now ~7100. Odd.

Images attached to this comment
ryan.crouch@LIGO.ORG - 08:24, Wednesday 04 October 2023 (73262)
Link

ITMX OPLEV sum counts are at about 7500 this morning.

Images attached to this comment
ryan.crouch@LIGO.ORG - 08:36, Thursday 05 October 2023 (73282)
Link

Sum counts around 7700 this morning, they're still creeping up

Images attached to this comment
H1 CDS
david.barker@LIGO.ORG - posted 08:32, Tuesday 03 October 2023 - last comment - 10:37, Tuesday 03 October 2023(73225)
Weather stations restart

The outbuilding weather station IOCs stopped updating again at 04:02 this morning (they stopped at 04:27 Mon morning).

As part of the investigation I found that I am still running a 04:01 cronjob which restarts any stuck weather stations. This should only restart an IOC if its weather station PVs are in an invalid state. The cronjob was installed on 17th Jan 2023 following a spate of lock ups which were occuring between 03:18 - 03:28.

I have disabled this crontab for now.

Comments related to this report
david.barker@LIGO.ORG - 10:37, Tuesday 03 October 2023 (73232)
Link

Instead of disabling the crontab, we have decided to reschedule it to run at 05:01 each morning:

01 05 * * * /ligo/home/controls/restart_weather > /dev/null
 

LHO General
ibrahim.abouelfettouh@LIGO.ORG - posted 08:07, Tuesday 03 October 2023 - last comment - 12:08, Tuesday 03 October 2023(73224)
OPS Day Shift Start

TITLE: 10/03 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Preventative Maintenance
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 4mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.25 μm/s
QUICK SUMMARY:

IFO is DOWN for Planned Tuesday Maintenance

When I arrived, IFO was about halfway through locking.

Was locked for only 3 minutes at NLN and unlocked due to a DCPD Saturation at 14:41 UTC

Dust monitors were sounding and were acknowledged.

 

Comments related to this report
ryan.crouch@LIGO.ORG - 12:08, Tuesday 03 October 2023 (73238)
Link

For the 14:41 lockloss, the signals look fine on the lockloss select tool scopes. The violins also look fine, they were all trending downwards. The OMC_DCPD signals looked interesting, they seem to have been diverging before the lockloss.

Images attached to this comment
H1 CDS
erik.vonreis@LIGO.ORG - posted 06:02, Tuesday 03 October 2023 (73223)
Workstations updated

Workstations were updated and rebooted.  This was an update of OS packages.  Conda packages were not updated.

H1 General (SEI)
anthony.sanchez@LIGO.ORG - posted 00:05, Tuesday 03 October 2023 (73222)
Monday Ops Eve Shift End

TITLE: 10/03 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 157Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:
Overall quiet night.
Control Room Video System is working now.
Rode out a 5.7 Mag Earthquake that was not picked up by Seismon.
Seismon has not recorded any Earthquakes since September 30th. Tagging SEI

H1 Current Status: Locked and Observing for 13 Hours and 43 Min.

LOG:
No Log

H1 PEM (DetChar)
camilla.compton@LIGO.ORG - posted 16:24, Monday 02 October 2023 - last comment - 11:09, Friday 06 October 2023(73219)
Optics Lab Cleanroom On/Off Test

We've been running with both the cleanrooms in the Optics Lab and the flowbench furthest from the door running. Robert said that in the past (23169 ?) we haven't seen noise from these but should repeat the test now we have higher sensitivity.

Cleanrooms and flow-bench turned off for 8 minute intervals at below times (-/+5 seconds).

Comments related to this report
max.trevor@LIGO.ORG - 11:09, Friday 06 October 2023 (73313)
Link 

I investigated these times as part of my DetChar DQ shift. I see no evidence for any difference in the noise distribution during the tests.
LHO VE (DetChar, VE)
gerardo.moreno@LIGO.ORG - posted 16:10, Monday 02 October 2023 - last comment - 10:31, Friday 06 October 2023(73220)
Turned ON Cleanroom Inside Filter Cavity Tube Enclosure.

Turned on a small cleanroom inside the filter cavity enclosure at 21:45:10 UTC, allowed to the cleanroom to run for 15 minutes, then turned it off.  Turned cleanroom back ON at 22:00:00 UTC, once again I let the cleanroom run for 15 minutes.  Cleanroom was not moved and it is now off.

Images attached to this report
Comments related to this report
gerardo.moreno@LIGO.ORG - 10:31, Friday 06 October 2023 (73309)DetChar, PEM, VE
Link

Tagging PEM.

H1 General
anthony.sanchez@LIGO.ORG - posted 16:07, Monday 02 October 2023 (73221)
Monday Ops Day Shift Start

TITLE: 10/02 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 10mph Gusts, 5mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.28 μm/s
QUICK SUMMARY:
H1 Has been locked for almost 6 hours, and we are currently OBSERVING.

 

 

LHO General (DetChar)
corey.gray@LIGO.ORG - posted 16:03, Monday 02 October 2023 (73210)
Mon DAY Ops Summary

TITLE: 10/02 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 61Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY:

Quiet shift with one lockloss/standard recovery.  Tagging DetChar because we had (2) separate  "cleanroom on/off tests" at two different locations in the afternoon.
LOG:

H1 CDS
david.barker@LIGO.ORG - posted 14:21, Monday 02 October 2023 (73218)
New SDF MEDM for slow controls systems showing if DISCONNECTED count > 0

While preparing for the installation of a new PSL OPC Beckhoff SDF channel list it was discovered that the disconnected count for this system has been non-zero with no indication of such on the MEDM.

I have created  a SDF_SC_NODE.adl file specifically for slow_controls system which shows a red border if the disconnected count is non-zero.

Images attached to this report
H1 PSL
ryan.short@LIGO.ORG - posted 11:01, Monday 02 October 2023 (73217)
PSL Cooling Water pH Test

FAMIS 19966

pH of PSL chiller water was measured to be between 10.0 and 10.5 according to the color of the test strip.

H1 PSL
ryan.short@LIGO.ORG - posted 10:46, Monday 02 October 2023 (73216)
PSL 10-Day Trends

FAMIS 19996

The temperature and relative humidity inside the laser room have been dropping slightly over the past few days (expected with the cooler temps outside).

The RefCav transmission was dropping, but appears to have turned around in recent days.

Images attached to this report
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