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Section: H1
Task: General
TITLE: 12/19 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: HAM7 work continued, JM TFs were taken, HAMs 3 & 4 and were locked, and a network switch went down around noon and took all the front ends with it. The PSL cameras were taken down for a measurement today and someone who knows how needs to bring them back up sometime.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:57 | SAF | LASER | LVEA | YES | LVEA is LASER HAZARD (\u2310\u25a0_\u25a0) | 10:51 |
| 15:35 | EPO | Corey | Yarm | N | Take pictures | 16:31 |
| 15:25 | FAC | Randy | LVEA | Y | Craning | 15:43 |
| 15:25 | ISC | Sheila | LVEA | Y | Check on laptop | 15:30 |
| 15:49 | FAC | Nellie, Kim | LVEA | Y | Tech clean | 17:10 |
| 16:29 | EE | Fil | LVEA | Y | Start disconnecting IOT2L | 17:42 |
| 16:49 | ISC | TJ | LVEA | Y | Start moving IOT2L | 17:42 |
| 16:59 | FAC | Randy | LVEA | Y | Help TJ move table | 17:37 |
| 17:05 | PSL | Alicia, Jean-Rene | LVEA | Y | Turn off cameras near PSL enc | 18:02 |
| 17:47 | FAC | Richard | LVEA | Y | Walkthrough | 18:08 |
| 17:55 | FAC | Nellie, Kim | LVEA | Y | Tech clean | 18:29 |
| 18:22 | VAC | Travis | LVEA | Y | Turn down purge air for HAM1 for JM measurement | 18:25 |
| 18:33 | ISC | Masayuki | LVEA | Y | Drop off parts at HAM1 | 19:53 |
| 18:36 | SEI | Jim, Randy | LVEA | Y | Lock HAM3 HEPI, then remove PEM ST endcaps | 20:01 |
| 18:39 | SQZ | Sheila, Kar Meng, Daniel | LVEA | Y | HAM7 checks, OPO, Kar Meng out at 23:36 | 00:00 |
| 18:58 | OPS | Tony | LVEA | Y | Talk to jim about HAM1 shaking | 19:09 |
| 20:02 | CAL | Tony | PCAL lab | Y | PRep meas | 20:12 |
| 20:36 | VAC | Travis | LVEA | Y | Turn purge air back up | 20:39 |
| 21:26 | ISC | Masayuki | Optics lab | LOCAL | JAC ASSY work | 22:08 |
| 21:55 | ISC | Jennie | LVEA, Optics lab | Y | Look for, and gather JAC parts | 22:13 |
| 21:35 | FAC | Richard, plus crew | OSB roof | N | Look at the view | 21:56 |
| 22:15 | FIT | Matt, Anna, TJ, Masayuki, Gabriele, ... | Xarm, Yarm | N | Running | 23:51 |
| 22:57 | ISC | Jennie | LVEA HAM1 | Y | Put away JAC parts, cleanup for break | 00:20 |
| 23:25 | PEM | Robert | LVEA | Y | HAM7 | 23:43 |
| 23:40 | OPS | Tony | LVEA | Y | Help Jennie at HAM1 | 00:20 |
| 00:05 | ISC | Masayuki | LVEA | Y | Help Jennie | 00:20 |
This morning Fil disconnected the table, I removed the bellows and added viewport covers and lexan, and then Randy and I moved the table out of the cleanroom and to the side in the +X direction from it's original location. The bellows I placed in the HAM3 cleanroom on top of the rack, covered in foil.
Fil also noticed that the ISCT1 bellows were still open, though hanging down. I took the extra precaution and covered these with foil as well to prevent dust drifting onto the table.
Dust counts during the whole process were 0's or 10's when I looked. This seemed too low so I rubbed my glove above the dust monitor during a sample and counts shot up to the hundreds. I guess that space really is that clean, great!
TITLE: 12/19 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: MAINTENANCE
Wind: 9mph Gusts, 5mph 3min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.45 μm/s
QUICK SUMMARY:
IFO is IDLE in ENGINEERING
The LVEA has just been transitioned to LASER HAZARD following the venting of the Relay Tube.
Vent work continues with the following progress:
Other:
Ryan S will take over ops shift for the next few hours.
I. Abouelfettouh, T. Sanchez, K. Kawabe, M. Todd, R. Short
Ibrahim kicked off the locking attempts this morning after an initial alignment. It sounds like one lockloss was during PREP_ASC due to SRM alignment running away (before the "human servo" was implemented), and another was simply due to cleaning activities near HAM1/2. More details in his shift summary.
Matt set the X-arm ring heaters back to their nominal settings after having used inverse filters yesterday; see alog88494.
While relocking, we noticed that PRC1_P seemed to be pulling alignment in the wrong direction after engaging DRMI ASC, so I turned it off and aligned PRM by-hand. During ENGAGE_ASC, I noticed ADS PIT3 was taking a long time to converge, so after all ASC and soft loops had finished, I checked the POP_A offsets, and they indeed needed updating. Pitch was a bit different, so this explains why PRC1_P was misbehaving. I've accepted these in SDF, see screenshot. During this whole relocking stretch, Ibrahim had been keeping SRM well aligned as SRC1 ASC is still disabled, but that proved too difficult during MOVE_SPOTS and we lost lock.
On the next attempt, we were able to get all the way to 25W automatically (with Ibrahim again acting as the human SRC1 servo). Instead trying to keep up with the spot move, we jumped to LOWNOISE_COIL_DRIVERS, where I watched the coil driver states successfully change for all optics (PRM, PR2, SRM, SR2, BS, ETMY, ETMX, ITMY, and ITMX). Then, we were able to simply return ISC_LOCK to auto and request LOWNOISE_ESD_ETMX, which exercised the lownoise ESD transitions for both ETMs. This worked without issue. We then planned to test OMC whitening, so we jumped to the OMC_WHITENING state where Tony and Ibrahim began damping violin modes, which were very rung up. Before the violins were able to damp low enough to turn on OMC whitening, we decided rather than waiting, we should try the REFL B transition done in LASER_NOISE_SUPPRESSION first. We turned off violin damping, I commented out the step of engaging the ISS secondloop in LASER_NOISE_SUPPRESSION (we would test this later, but couldn't at this point since we only has 25W of input power), and jumped down to LASER_NOISE_SUPPRESSION. The state ran without issue until the very end when the IMC REFL servo fast gain is stepped up as the IMC REFL input gains are stepped down, which is the last step of the state and only there to potentially survive earthquakes better, and caused a lockloss.
The final locking attempt of the day began the same as the one before, with 25W being achieved automatically, jumping to LOWNOISE_COIL_DRIVERS, going through the lownoise ESD states, and jumping up to OMC_WHITENING. Contrary to before, we waited here while damping violins until the OMC whitening was turned on. I'd argue Guardian turned this on a bit prematurely as the OMC DCPDs immediately saturated, but the IFO did not lose lock. Violin modes damped quickly and soon the saturation warnings subsided. Our plan after confirming the OMC whitening was working was to try LASER_NOISE_SUPPRESSION again, but after talking through it and looking at Guardian code with Keita, we decided we should use some different gain settings to compensate for the fact we were again only at 25W. We eventually decided on the figure of 8 dB more gain was needed on the input to the IMC and LSC REFL common mode boards, which Guardian adjusts during this state. I started going through the steps of LASER_NOISE_SUPPRESSION by-hand, but raising the IMC REFL servo IN1 gain to 17 dB instead of 9 dB and the LSC REFL servo IN1 and IN2 gains to 14 db instead of 6 dB. I didn't get all the way to 14 dB for LSC REFL as we started hearing test mass saturation warnings, so I stopped at 10 dB instead. The last step of the state is to lower each of the IMC REFL input gains as you increase the IMC REFL fast gain, but on the fourth iteration of the step, we lost lock. It's possible the fast gain should have been scaled also due to the lower input power, but at least this was confirmed to be the problem step as it's the same place we lost lock on the previous attempt.
After this last lockloss, we tested functionality of the ISS secondloop by ensuring PRM was misaligned, raising the input power to 62W, and using the IMC_LOCK Guardian to close the secondloop. This worked without issue and everything was returned to normal.
Even though we were not able to fully recover H1 to low noise today, overall we believe we have confirmed the functionality of the main systems in question following the power outage last week and various CDS/Beckhoff changes this week. Arm gate valves are now closed in preparation for the HAM1 vent on Monday, and we plan to see H1 again in its full glory roughly mid-February 2026.
Yesterday morning during locking attempts I noticed the ring heaters in the XARM were set incorrectly, and ETMX was completely off. I'm not completely sure why this happened, but my guess at this point is that after using the inverse filters last week, someone accepted SDFs or reverted to the safe values and these inverse filters were turned off but the set values were not restored in the nominal state. I'll try and understand if we can add this check to the TCS_RH_PWR guardian.
Anyway, I reused the inverse filters last night for ETMX and set them back to nominal this morning with the same set power.
TITLE: 12/12 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 5mph Gusts, 4mph 3min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.41 μm/s
SHIFT SUMMARY:
Initial_Alignment completed quickly thismornign with no intervention.
LL @ Start_TR_CARM
NO_IR found message when at CARM_TO_TR
Manualed back to Start_TR_CARM
LL @ Start TR CARM again
Matt noticed that ETMX Ring Heater has not been on for 36 hours.
Reconfig of DAQ 0 leg, trying to pull a machine out. See Alog by Jonathan ***pending****
DC0 Status indicators may blink red on CDS Overview.
TR_CARM Issue update:
There is a perception that Beckhoff maybe have a "sticky slider" issue, So Dr. Driggers has pushed all buttons asscoitated with Corner 5 Beckhoff ~ 18:15 UTC.
Sticky Slider Idea has been ruled out @ 20:03 UTC
Many Hours Later...apparently there was a the PLL Boost that was stopping us from getting past Start_TR_CARM That Dr. Driggers found.
error with GS0 @ 20:54 UTC was Jonathan doing DC0 reboots.
Violin Damping Guadian node restart ~ 21:25 UTC
Manually setting Violin damping settings. Lost losk when applying Damping to EYmode8
The Guardian gate way needed to be restarted to solve this issue. Thank you Jonathan!
Pshyc! Violin Guardian issue is back! Turns out its a Python2.7 -> Python 3+ issue. Thanks Dave!
LHO's IFO Made it to Move spots before Lockloss.
error with GS0 @ 00:29 UTC & 01:09 UTC was Jonathan doing DC0 reboots again and finding an Error.
Jonathan is doing another "Zero leg" Restart @ 1:20 UTC Alog still pending, but here is a work permit.
It is currently 02:00 UTC and the Locking team has called it for the night after losing lock at Max Power.
Lockloss was from an ASC ring up around 275 kW of recirculating power in the arms.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:57 | SAFETY | LASER HAZ STATUS | LVEA | NO | LVEA is LASER SAFE \u0d26\u0d4d\u0d26\u0d3f (\u2022_\u2022) | 10:51 |
| 15:57 | FAC | Kim & Nellie | LVEA | Y | Technical Cleaning | 16:33 |
| 17:23 | JAC | Jennie W, & Co | JAC Lab | N | Working on JAC | 19:23 |
| 17:39 | FAC | Randy | X-arm | N | Clearing the path of tumbleweeds | 19:39 |
| 17:48 | Tours | Cassidy & tour | CTRL-Overpass | N | Giving a tour | 18:48 |
| 17:52 | LASER Saftey | Travis | LVEA, FCES, EY | n | Updating Laser status signs up around site | 18:49 |
| 18:22 | SQZ | Karmeng & Daniel | LVEA SQZt7 | YES | Working on HAM7 upgrades | 18:57 |
| 19:26 | JAC/Cheta | Betsy | Optics lab | N | Dropping off parts. | 19:56 |
| 19:27 | CDS | Jonathan | MSR | N | Rebooting DC0 & making CDS_Overview angry | 20:57 |
| 19:31 | ISC | Jeff & Jennie D | LVEA | Y | Checking on status of PSL ISCT racks. | 20:11 |
| 19:42 | JAC | J.W. | JAC Lab | N | Jac Work | 19:48 |
| 22:15 | FAC | Tyler | OSB Receiving | N | Forklifting something quickly over to OSB Recieving. | 22:35 |
| 22:27 | LAser Trans | Sheila & Anamaria | LVEA | yes | Transitioning the LVEA to Laser Hazard. | 22:57 |
| 22:53 | VAC | Gerardo & Jordan | LVEA | N | Getting parts | 23:13 |
| 23:46 | PEM | RyanC | PCAL lab | N | Get data from dust monitor huddle test | 00:01 |
| 00:10 | CDS | Jonathan | MSR | N | Working on the DNS and DC0 servers | 00:50 |
M. Todd, J. Driggers, J. Kissel, S. Dwyer, T. Sanchez, D. Sigg
For posterity's sake, I thought it would be nice to record some of the actions and efforts the locking team was doing this morning.
Sheila noticed we were losing lock at START_TR_CARM, and so we relocked DRMI and tried again but going back to PREP_TR_CARM and making sure things were reset. Upon trying to advance to START_TR_CARM, the ALS-C_REFL_DC_BIAS_GAIN was set before losing lock again.
This raised suspicion about the IMC_COMM_CARM path, and it was thought that the changes to Bekhoff over the last few days could have caused some of these problems. To double check everything in this path is set to the values that are being "reported", Jenne went through and toggled every button and slider in the path as a "sticky slider" approach to solving this. The chassis work involved corner 4 and 5, but Jeff narrowed these issues down to corner 5 chassis -- here is a wiring diagram of the chassis: D1100683.
We called in Daniel to see what his thoughts were on these issues.
We eventually lock TR_CARM by going through the guardian steps slowly. We noticed that when we stepped through slowly, the ALS COMM VCO would pull the mode cleaner away causing the TR_CARM path to rail. We disabled the VCO internal servo that uses the frequency comparator to keep the VCO at a fixed frequency. This has been used in the past for our sucsesful transitions, but seemed to be railing each time this morning.
We left the ALS not shuttered, and ran the QPD servos while ASC and soft loops were engaged, with Tony acting as a SRC1 servo. After all the ASC had engaged, the camera set points still looked good, I set the QPD offsets back to their values from SDF, and the camera offsets still looked good. The guardain has been reset to shutter ALS as normal next time we relock. The POP A yaw offset was off slightly, I set it to -0.43 rather than -0.4.
We then transitioned to DC_READOUT using the guardian without any intervention, or known fixes for the problems we were having.
We are able to turn on the SRC1 yaw loop, but the SRC1 pitch loop pulls the side band build ups off. I've added the SRC1 yaw loop back into ENGAGE_ASC_FOR_FULL_IFO.
Re: Matt's alog this morning, I was worried that we had a sticky slider situation after the beckhoff work (which apparently isn't really a thing here, but was a thing at the 40m). We moved sliders and flipped switches on the IMC common mode board, the IFO REFL common mode board, and the summing node. Probably that wasn't the issue.
After a few other TR_Carm unsuccessful attempts, I trended and it turns out that the time we had been successful doing things by hand that Sheila mentions, we had forgotten to turn off the H1:ALS-C_COMM_PLL_BOOST, so we did the whole transition with the boost left on. I have now set in the guardian to leave the boost on, and we have now gotten through this several times without any intervention. I also added turning off the ALS COMM VCO by clicking the Ext button (and resetting it to Int in PrepForLocking), however it's possible that that wasn't necessary, since guardian already had changing the On/Off switch as part of these states. The real key seems to be leaving on the H1:ALS-C_COMM_PLL_BOOST.
As Sheila said, DC readout seems to just be working fine, no intervention needed. Total mystery why it hadn't been working on Tuesday.
We have now powered up to 25 W two times! Even if we're not able to get farther than this, there are very few items left that would need to be checked using the full IFO (eg, the ISS second loop can be checked using IMC-only).
SRC1 P is still out of the guardian. One time I was able to close it using the offset from lownoise ASC, at Elenna's suggestion. But, we still lost lock in MoveSpots. The other time I was by-hand watching SRM pitch. No need to move it up to 25W, and I think I picked the wrong direction during move spots, so we still lost lock.
We got up past 25W a third time. This time, rather than doing MOVE_SPOTS, I manual-ed and did RF9 and then RF45 modulation depth reduction. Both of those were fine, although the 45 MHz reduction did confuse my Jenne-in-the-loop SRM alignment loop. At some point, it became clear that SRC1 yaw was pulling us away, so we turned that off and I started dealing with SRM yaw alignment as well as SRM pit alignment. We then did move spots with both SRC1 pit and yaw open and me watching them. That seemed fine. We then started going to MAX_POWER. I think we got up to 50W, but then we got a nasty ASC ringup and lost lock.
The only analog things that we haven't tested yet are (I think) coil driver switching, ESD switching, and OMC whitening switching, and ISS Second loop engagement. Tony had checked PCals earlier in one of our locks, and they were fine.
It sounds like there will be some folks around to perhaps try locking again tomorrow. However, as Betsy pointed out, now we have a pretty small list of things that *haven't* been tested, so even if we aren't able to get to full NLN we have very few things to be suspicious of when relocking next calendar year after the vent. ISS second loop we can test using IMC-only. Anamaria and Jeff were thinking through how could we check (using, eg, the IMON channels) the sus actuator switching. I think that we could also try OMC whitening switching using a single-bounce OMC.
Due to it giving Jenne trouble and pulling alignment away, I have commented out SRC1_Y from ENGAGE_ASC. This means the "human servo" will need to be in-use for now for SRM, especially during powerup and the spot move.
I've attached the ASC trends around where the ringup happened during the powerup. Looks like this is the known ~0.45 Hz instability and it's possible we were just unlucky.
The plan for tomorrow is to start locking just like we did this last time (fully auto with someone monitoring SRM alignment) and see how far we can get. If we're unable to fully reach low noise, there are ways we can check certain systems for functionality before we plan to close the arm gate valves mid-afternoon.
TITLE: 12/11 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 15mph Gusts, 9mph 3min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.47 μm/s
QUICK SUMMARY:
Initial Alignment Started.
Locking will start as soon as IA finishes.
TITLE: 12/11 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 52mph Gusts, 37mph 3min avg
Primary useism: 0.13 μm/s
Secondary useism: 0.61 μm/s
SHIFT SUMMARY:
We had Planned to lock today to get proof of life out of H1, but then...
The tumbleweeds were trying to get in from the Roof during the 70 MPH Wind conditions we had today. We let the tumbleweeds win and didn't try to lock but did other things.
Y arm was clear enough for TJ to get to, but X arm is impassable due to a tumble-anche along the road there.
Beckhoff Upgrades were done for Corner5.
Faroing was started but not finished.
JAC work has started and we were able to recover the IMC.
CDS was able to make some progress today as well.
Random notes I took throuout the day:
Dave did a restart everything here.
Frame writer restart happened today.
The Wind only Looks like it reached 114 MPH as indicated by the wind speed, but it only hit 70 MPH.
Corner 5 beckhoff install starting at 23:00 UTC
FW1 rerstart @ 23:05 UTC
Might need to reboot ASCSQZIFO or ASCSQZ0 computer: Completed.
PSL enclosure temps alarm sounded off at 23:22 UTC during the DAQ restarts.
440 channels added to H1EDC for beckhoff.
IMC recovery :
I ended up Clearing history on IMC WFS...
Reverted MC and IMC PZTs back to GPS time: 1449411452 (the last time we had the IMC locked.)
I then moved MC2 until the we had a good lock on MC_Trans. IMC-WFS_GAIN was taken from 0.04 to 0.4 and then back again to allow the WFS to move IMC.
We then offloaded it.
Forcast for tomorrow: https://alog.ligo-wa.caltech.edu/aLOG/uploads/88470_20251210180643_2025-12-10_18-06.png
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:57 | SAFETY | LASER HAZ STATUS | LVEA | YES | LVEA is LASER HAZARD \u0d26\u0d4d\u0d26\u0d3f (\u239a_\u239a) | 10:31 |
| 15:42 | FAC | Kim & Nellie | LVEA | y | Technical Cleaningq | 17:05 |
| 16:42 | TCS | Matt | Prep lab | n | Cheta table work | 18:52 |
| 16:50 | SEI | Randy | MY | N | Cleaning the Quad picker | 19:14 |
| 17:24 | Faro | Jason | LVEA | Y | Setting up Faro Equipment | 17:43 |
| 17:40 | PEM | Joan-Rene, Alicia | LVEA | y | Unplugging a cable | 18:57 |
| 17:40 | VAC | Jordan | Lvea | y | Purge air Dew point measurement. | 17:52 |
| 17:46 | SQZ | Sheila, Daniel, Kar Meng, Eric | LVEA | YES | HAM7 work | 20:24 |
| 18:24 | SEI | Jim | EY | N | Checking the Wind fence for damage | 20:24 |
| 18:25 | SQZ | Oli | HAM7 | y | Running parts | 18:29 |
| 18:42 | IAS | Jason, Ryan C | LVEA | y | Faroing | 20:46 |
| 18:52 | SQZ | Betsy | LVEA | y | Running parts & Info | 19:12 |
| 19:21 | JACK | Jennie W | JOAT | N | Working on JACK | 19:25 |
| 19:33 | SEI | Randy | LVEA HAM1 | y | Moving pallots near HAM1 | 21:33 |
| 20:43 | CDS | Dave | CER | N | Installing Hardward for CDS ADC upgrade | 21:43 |
| 21:40 | IAS | Jason, RyanC | LVEA | Y | FAROing HAM2 area | 22:27 |
| 22:18 | FAC | Tyler | CER | N | Checking temp alarm | 22:22 |
| 23:25 | SQZ | Sheila, Eric, Daniel, Karmeng | LVEA HAM7 | Yes | HAM7 OPO work | 01:03 |
| 23:43 | VAC | Betsy | Highbay | y | Leaving parts | 00:13 |
| 00:18 | OPS | RyanC | PCAL lab | N | Grab DM charger | 00:24 |
| 00:32 | JACK | Daniel | LVEA | y | Installing Jack Chassis | 02:32 |
| 00:33 | PEM | Ryan C | CER & LVEA | N | Setting up Dust monitor station | 00:48 |
| 00:38 | PEM | TJ | EY | N | Checking flow rate for dust pumps | 00:48 |
| 01:00 | IAS | Jason | LVEA | y | Turing off Faro | 01:09 |
TITLE: 12/10 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: SEISMON_ALERT
Wind: 46mph Gusts, 34mph 3min avg
Primary useism: 0.14 μm/s
Secondary useism: 0.39 μm/s
QUICK SUMMARY:
Looks like someone woke up and ran an Initial_Alignment first think this morning.
When I got it H1 was in an Initial Alignment complete state. which is fantastic, but unfortunately the Wind is Howling on site right now.
I'm going to try to lock 3 times just to see if I can catch a lucky lock. But the Wind forcast look abysmal for locking today.
TITLE: 12/10 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: MAINTENANCE
Wind: 9mph Gusts, 7mph 3min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.39 μm/s
QUICK SUMMARY:
All planned CDS Work : Status Postponed in favor of Locking.
DEC 8 - FAC - annual fire system checks around site : Status "Completed.... For now." ~ Tyler
MON TUES - RELOCKING IFO : " In Progress "
TUES AM - HAM7 Pull -Y Door : STATUS Completed
FARO work at BSC2 (Jason, Ryan C) Post poned in favor for locking. : Status postponed infavor of Locking.
HAM7 - in-chamber work to swap OPO assembly : Status " In progress"
Notes:
Fire Pump 1 is on 23:01 UTC
-18V power supply SUSC1 power supply dead, Fil C. is replacing it.
Dave took down corresponding AA & AI chassis and brought them back up.
Fire pump 1 back on 23:16 UTC
Fire pump 2 on at 23:19 UTC
Fire Pump 1 is back on again 23:21 UTC
High Voltage for HAM6 was accidentally shut off , which is why the Fast shutter no longer works....Turned back on at 23:53 UTC.
16:17 All SEI ALL SUS at Corner Station taken to safe to prepair for restarting ALL CS Models.
Waiting for HAM7 OPO team to give Green Light for model restarts on HAM7.
... Oops... ZM4 & ZM5 models were accidentally restarted with H1SUSSQZOUT before we heard from OPO team.
TSC X&Y CO2 TRIP Imminent !? Verbals scrolled too fast to get a time.... Dave was restarting those models at the time.
Ends Stations and Mid stations were also restarted since the X & Y ES both tripped due to a dolphin issue. ES were not taken to Safe.
"Might as well restart them all" ~ Dave B.
SUS ETMX was shook hard enough to trip the watchdog. Probably because they were not taken to safe befroe the reboots.
TITLE: 12/09 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 21mph Gusts, 17mph 3min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.45 μm/s
QUICK SUMMARY:
DEC 8 - FAC - annual fire system checks around site : In Progress
MON Tues - RELOCKING IFO : In Progress
TUES AM - HAM7 Pull -Y Door : Completed
FARO work at BSC2 (Jason, Ryan C) : Post poned in favor of Locking?
HAM7 - in-chamber work to swap OPO assembly : In Progress.
All other work Status is currently unknown.
---------------------------------------------------------------------------------------------------
Notes:
Fire Alarm went off at 16:58 UTC
HVAC system down Temperature will climb everywhere says Tyler @ 17:15 UTC
HVAC Fans turn back on @ 17:18 UTC Tyler says Air handlers are back on line , should be just a little Blip in temp.
Tumbleweeds at EY piled up too high to access EY. Chris has since cleared this.
Fire alarm in MSR going off @ 18:07 UTC
Initial Alignment process:
Held ISC_LOCK in Idle
Forced X arm to get locked, Moved ITMX to increase the Comm beat note, then Offloaded it.
When we tried for an initial Alignment we skipped.Green arms in Initial alignment.
Pushed PRM to get locked while we were in PRC align.
Pushed BS when Mich_bright aligning.
Pushed SRM to help SRC alignment.
Locking:
Jumped straight to Green Arms Manual and aimed for Offload_DRMI_ASC.
Jenne D. by hand Offloaded a "PR2 osem Equivelent", during one of out locks that got DRMI locked but locklossed at Turn_On_BS_Stage2.
another LL at Turn_On_BS_Stage2.
We made it past Turn_On_BS_Stage2 when Jenne D. Told PRC1 & SRC1 to not run in ASC.
H1 has been losing lock at a number of places before power up.
TITLE: 12/09 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 11mph Gusts, 6mph 3min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.54 μm/s
QUICK SUMMARY:
SUS in-lock charge measurements did not run due to being unlocked.
HAM7 Door Bolts have been loosened & door is ready to come off.
Potential Tuesday Maintenance Items:
CDS - Log in and check on vacuum system computer (Patrick)
18-bit DACs in iscey should be replaced with 20-bit DACs???
Beckhoff upgrades
installing SUS front-end model infrastructure for JM1 and JM3, and renaming the h1sushtts.mdl to h1sush1.mdl
RELOCK CHECKPOINT IMC
18-bit DACs in h1oaf should be replaced with 20-bit DACs
h1sush2a/h1sush2b >> sush12 consolidation
Upgrade susb123 to LIGO DACs
Add sush6 chassis
DEC 8 - FAC - annual fire system checks around site
MON - RELOCKING IFO Reached DRMI last night
TUES AM - HAM7 Pull -Y Door
FARO work at BSC2 (Jason, Ryan C)
TITLE: 12/08 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:
HAM7 was prepped then vented today and there are 4 bolts left on each door, the HAM7 HV was turned off alog88421. I changed the nuc30 DARM fom to the NO_GDS template in the launch.yaml file. Team CDS has been working their way through some of the EDC channel disconnects, the list length shrinks everytime I look at it.
We wanted to lock for health checks today but the Earth disagreed, a 7.6 from Japan rumbled in around 14:00 UTC and then a 6.7 from the same region at 22:00 UTC, and the wind started to pick up around 21:00UTC. Windy.com reports the wind will increase/remain elevated till it peaks around 10/11 PM PST | 06/07 UTC then it will should start to decrease. Ground motion and wind is still elevated as of the end of the shift.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:45 | FAC | Nellie | LVEA | N->Y->N | Tech clean | 18:21 |
| 16:03 | FAC | Kim | LVEA | N->Y->N | Tech clean | 18:21 |
| 16:14 | FAC | Randy | LVEA | N | Door prep, HAM6/7 | 17:07 |
| 16:44 | SAF | Sheila | LVEA | N -> Y | LASER HAZARD transition to HAZARD | 16:53 |
| 16:53 | LASER HAZARD | LVEA | Y | LVEA IS LASER HAZARD | 18:00 | |
| 16:54 | ISC | Sheila | LVEA | Y | SQZT7 work | 17:53 |
| 17:08 | CAL | Tony | PCAL lab | Y | PCAL measurement | 18:28 |
| 17:13 | EE | Fil | Mid/EndY | N | Power cycle electronics, timing issue | 17:46 |
| 17:36 | EE | Marc, Daniel | LVEA | Y | Check on racks by SQZT7 | 18:46 |
| 17:47 | EE | Fil | LVEA | Y | Join Marc | 18:13 |
| 17:55 | ISC | Matt | Prep lab | N | Checks, JOT lab | 18:28 |
| 18:05 | VAC | Travis | LVEA | N | Prep for HAM7 vent | 19:20 |
| 18:10 | EE | Fil | LVEA | n | Shutting HV off for HAM7 | 19:10 |
| 18:17 | SAF | Richard | LVEA | N | Check on FIl and Marc | 18:28 |
| 18:21 | VAC | Gerardo | LVEA | N | HAM7 checks | 19:36 |
| 18:29 | CAL | Tony, Yuri | FCES | N | 19:19 | |
| 20:29 | CDS | Dave | MidY and EndY | N | Plug in switch | 21:16 |
| 20:46 | CAL | Tony | PCAL lab | LOCAL | Grab goggles | 20:48 |
| 21:48 | VAC | Randy | LVEA | N | Door bolts | 22:58 |
| 22:05 | VAC | Gerardo | LVEA | N | HAM7 doors | 23:20 |
| 22:12 | VAC | Jordan | LVEA | N | HAM7 door bolts | 22:38 |
| 22:16 | FAC | Tyler +1 | MY, EY | N | Fire inspections | 00:06 |
| 22:18 | ISC | Matt | Prep Lab | N | Parts on CHETA table | 22:53 |
| 22:43 | VAC | Travis | LVEA | N | Join door crew | 23:19 |
| 22:58 | Anamaria, Rene, Alicia | LVEA | N | Checks by PSL | 23:30 | |
| 23:55 | CAL | Tony | PCAL lab | LOCAL | Take a quick picture | 00:03 |
| 23:57 | ISC | Jennie | Prep lab, LVEA | N | Gather parts | Ongoing |
18:32 UTC SEI_CONF back to AUTO from MAINTENANCE where it was all weekend
18:58 UTC HAM7 ISI tripped
22:03 UTC Earthquake mode as a 6.6 from Japan hit us
TITLE: 12/08 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering // Earthquake
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: LARGE_EQ
QUICK SUMMARY:
When I try to run an ndscope I get the following error:
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.
Aborted
*I think I was trying to launch ndscope in a terminal that I was sshed into a different computer/env*
As a follow up note. Ndscope is working for Ryan, we are not entirely sure what the issue was, maybe the console was in a strange conda environment. When we looked at it, ndscope started fine.