Closes FAMIS26501
2025-04-29 08:05:53.258718
There are 13 T240 proof masses out of range ( > 0.3 [V] )!
ETMX T240 2 DOF X/U = -1.18 [V]
ETMX T240 2 DOF Y/V = -1.115 [V]
ETMX T240 2 DOF Z/W = -0.803 [V]
ITMX T240 1 DOF X/U = -1.733 [V]
ITMX T240 2 DOF Z/W = 0.355 [V]
ITMX T240 3 DOF X/U = -2.292 [V]
ITMY T240 3 DOF X/U = -0.976 [V]
ITMY T240 3 DOF Z/W = -2.401 [V]
BS T240 2 DOF Y/V = -0.318 [V]
BS T240 3 DOF X/U = -0.604 [V]
BS T240 3 DOF Z/W = -0.365 [V]
HAM8 1 DOF Y/V = -0.478 [V]
HAM8 1 DOF Z/W = -0.764 [V]
All other proof masses are within range ( < 0.3 [V] ):
ETMX T240 1 DOF X/U = -0.1 [V]
ETMX T240 1 DOF Y/V = -0.082 [V]
ETMX T240 1 DOF Z/W = -0.092 [V]
ETMX T240 3 DOF X/U = -0.035 [V]
ETMX T240 3 DOF Y/V = -0.154 [V]
ETMX T240 3 DOF Z/W = -0.063 [V]
ETMY T240 1 DOF X/U = 0.011 [V]
ETMY T240 1 DOF Y/V = 0.083 [V]
ETMY T240 1 DOF Z/W = 0.149 [V]
ETMY T240 2 DOF X/U = -0.134 [V]
ETMY T240 2 DOF Y/V = 0.152 [V]
ETMY T240 2 DOF Z/W = 0.046 [V]
ETMY T240 3 DOF X/U = 0.158 [V]
ETMY T240 3 DOF Y/V = 0.031 [V]
ETMY T240 3 DOF Z/W = 0.058 [V]
ITMX T240 1 DOF Y/V = 0.22 [V]
ITMX T240 1 DOF Z/W = 0.14 [V]
ITMX T240 2 DOF X/U = 0.155 [V]
ITMX T240 2 DOF Y/V = -0.054 [V]
ITMX T240 3 DOF Y/V = 0.253 [V]
ITMX T240 3 DOF Z/W = 0.139 [V]
ITMY T240 1 DOF X/U = -0.059 [V]
ITMY T240 1 DOF Y/V = 0.018 [V]
ITMY T240 1 DOF Z/W = -0.067 [V]
ITMY T240 2 DOF X/U = 0.008 [V]
ITMY T240 2 DOF Y/V = 0.211 [V]
ITMY T240 2 DOF Z/W = -0.046 [V]
ITMY T240 3 DOF Y/V = -0.056 [V]
BS T240 1 DOF X/U = 0.176 [V]
BS T240 1 DOF Y/V = -0.272 [V]
BS T240 1 DOF Z/W = -0.278 [V]
BS T240 2 DOF X/U = 0.094 [V]
BS T240 2 DOF Z/W = 0.221 [V]
BS T240 3 DOF Y/V = -0.039 [V]
HAM8 1 DOF X/U = -0.297 [V]
Following this morning's reboot of x1dtslogin, the EPICS IOC reporting the H2 building DTS environment channels froze with its last values instead of crashing. After 10 minutes this was reported on the main DTS MEDM with a red banner showing a stuck GPS time, but this was not reflected on the CDS Overview.
I have modified DTS.adl, which is used by the CDS overview, to show a red flag if the GPS time stops updating. Attachment shows the new flag and a trend of the DTS air flow channel showing the freeze which started at 07:33 Tue 29apr2025
dts_tunnel.service and dts_env.service were restarted on cdsioc0 at 08:04 to clear this error.
TITLE: 04/29 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: MAINTENANCE
Wind: 5mph Gusts, 3mph 3min avg
Primary useism: 0.50 μm/s
Secondary useism: 0.13 μm/s
QUICK SUMMARY:
Workstations were updated and rebooted. This was an os packages update. Conda packages were not updated.
I have restarted the temporary EPICS IOCs running inside tmux sessions on opslogin0 to "green up" the EDC:
vacstat_dummy_ioc.py (channels removed from vacstat during the vent)
digivideo_dummy_ioc.py (those cameras which had to be reverted to the old software, but edc has new chan list)
TITLE: 04/28 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:
IFO is in PLANNED ENGINEERING for VENT
Short summary of work done:
LOG:
Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
---|---|---|---|---|---|---|
14:44 | FAC | Kim | LVEA | N | Tech clean | 15:48 |
14:44 | FAC | Nellie | FAC | N | Tech clean | 15:48 |
14:44 | FAC | Tyler | YARM | N | Boom Lift to EY | 15:20 |
15:51 | FAC | Randy, Tyler, Betsy, TJ, Mitchell | LVEA | N | Moving Optics Table | 16:47 |
16:07 | SUS | Camilla | LVEA | N | Moving Optics Tables | 18:39 |
16:24 | ISC | Oli | LVEA | N | HAM1 ISC install | 17:50 |
16:42 | PCAL | Tony | PCAL Lab | N | PCAL Meas. | 18:39 |
16:48 | FAC | TJ | LVEA | N | Moving Optics Table | 17:53 |
16:48 | SUS | Rahul | LVEA | N | HAM1 RMs | 18:01 |
16:56 | VAC | Jordan | LVEA | N | Purge Air Checks | 16:56 |
17:01 | FAC | Nellie | Water Pump | N | Tech cleaning | 17:25 |
17:01 | EE | Marc | LVEA | N | Ground loop help | 17:45 |
17:05 | AOS | Elenna | LVEA | N | Wipe drop | 17:05 |
17:26 | FAC | Nellie | LVEA | N | Tech clean | 18:48 |
17:26 | FAC | Kim | LVEA | N | Tech clean | 18:48 |
17:44 | VAC | Jordan, Gerardo | MX, MY | N | Dewar jack pump work | 20:33 |
17:45 | EE | Fil, Marc | LVEA | N | HAM1 Table Cable | 19:26 |
18:52 | PCAL | Tony | PCAL Lab | y(local) | TSA measurement | 19:52 |
20:22 | PCAL | Tony | PCAL Lab | N | Computer power off | 21:34 |
20:33 | PSL | Jason | LVEA | N | Locking rotation stage | 20:42 |
20:35 | ISC | Camilla, Oli | LVEA | N | HAM1 ISC Cabling | 22:48 |
20:36 | VAC | Jordan, Gerardo | LVEA | N | RGA Stand | 22:18 |
21:34 | TCS | TJ, Matt | LVEA | N | TCS Table Looksy | 22:12 |
22:25 | SUS | Rahul | LVEA | N | HAM1 Work | 23:07 |
22:52 | CDS | Fil | MR | N | Beckhoff computer power | 01:52 |
23:03 | VAC | Jordan | MY | N | Turning off dewar pump | 23:23 |
23:22 | EE | Marc | MY | N | Part search | 02:22 |
Oli, Camilla.
Following work done in 84115 to repopulate HAM1 with some optical components, today Oli and I placed the SLED in position and placed all the diodes, most (not LSC POP A ) are cabled. Photos taken from -Y side and +Y side attached.
Apart from LSC POP A, they are all cabled up according to the cables in D1000313 BOM googlesheet. LSC POP A has a heli-coil that needs replacing before we can install the RF cable so neither cable are currently installed. ASC REFL A and B are in the incorrect position to allow for beam profiling before moving the the final position. LSC REFL A and B may need to be moved slightly but we need more of the correct size dog clamps to allow that.
Tagging EPO for HAM1 table photos.
Rahul, Gerado, Camilla
We pulled the old helicoil and installed a new shorter helicoil into LSC POP A. All diode cables are now connected.
As we were running low on dog clamps, I swapped the bases of L2, M10 nd M12 to longer D1200683 mounting bases so that we can use the dog clamps where needed. Photos attached.
FAMIS 31083
Short list of PSL-related events over the past week are as follows:
Aside from these events, no other major changes of note.
Input Arm alignment pointing for the HAM2 an HAM3 suspensions was re-checked after corner pumpdown. Since HEPI is locked currently, we wanted a time pre-venting where HEPI is also locked in order to be able to compare. I used the pointing values which follow the format: H1:SUS-{suspension}_M1_DAMP_{P or Y}_INMON.
HAM HEPIs LOCKED and CORNER (except HAM1) UNDER VACUUM - GPS TIME: 1427710424
Suspension | Before Venting (urad) | After Vent and Pumpdown (urad) | Difference |
IM1 P | 3133.6 | 3073.2 | -60.4 |
IM1 Y | -682.8 | -675.5 | +7.3 |
IM2 P | 903.2 | 723.0 realigned to 903.0 | -180.2, -0.2 |
IM2 Y | -211.6 | -228.1 realigned to -210.9 | -16.5, +0.7 |
IM3 P | 135.5 | 166.8 | +31.3 |
IM3 Y | -1585.5 | -1597.4 | -11.9 |
IM4 P | -2857.8 | -2882.3 realigned to -2858.2 | -24.5, -0.4 |
IM4 Y | -44.6 | 212.5 realigned to -44.0 | +257.1, +0.6 |
PRM P | -1272.7 | -1255.0 | +17.7 |
PRM Y | -31.9 | -30.7 | +1.2 |
PR2 P | -398.1 | -386.3 | +11.8 |
PR2 Y | -1216.6 | -1208.4 | +8.2 |
PR3 P | -655.4 | -657.1 | -1.7 |
PR3 Y | -166.8 | -166.3 | -0.5 |
MC1 P | -646.9 | -667.8 | -20.9 |
MC1 Y | -1381.0 | -1378.2 | +2.8 |
MC2 P | 785.6 | 737.6 | -48 |
MC2 Y | -383.9 | -382.7 | +1.2 |
MC3 P | 451.4 | 460.1 | +8.7 |
MC3 Y | -179.2 | -179.3 | -0.1 |
Most of these are very close and do not need to be adjusted, with only 2 being different by over 100 microradians. 45% of values have less than 10urad discrepancy. 85% have less than 50urad discrepancy. After speaking with TJ, I realigned two most egregious ones IM4 Y, and IM2 P to their pre-vent (HEPI Locked) values using the OPTICALIGN sliders. Screenshots below of plots used further show the pointing as well as the old to new value differences of the two suspensions that were aligned. After alignment, all values are under 100urad discrepancy and 95% are under 50urad difference.
Jonathan, Dave:
The DAQ detail MEDM has been updated to show FW2's progress within the 64 second cycle for full frames, 600 second cycle for second trends and 3600 second cycle for minute frames.
When each progress bar reaches the end, the next data accumulation phase starts and the frame file writing begins.
A new run_number column has been added, along with a LED stack checking these all agree with each other.
The retransmission column has been removed.
As a test, I've added a second bar for FW2 showing the time it took to write the previous frame as a diamond. If the time to write exceeds the bar's span, e.g. > 64 seconds for a full frame, I have verified that a half diamond is shown on the right margin.
Morning dry air skid checks, water pump, kobelco, drying towers all nominal.
Dew point measurement at HAM1 , approx. -42C
h1daqfw2 is now producing identical raw, second trend, and minute trend frames to h1daqfw[01]. The issues mentioned in https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=84132 have been resolved. There are times where we expect there to be mismatches. These are generally when data is missing, the daqd may replay recent data, where the new frame writer will write zeros. We will continue tests on the frame writer, including software updates. The next test is to watch the behavior of h1daqfw2 when h1daqfw0 & h1daqfw1 have a restart. It is designed to automatically adjust its channel list and have no gaps in the frames and need no restart to accommodate the changes.
Randy, Mitchell, Tyler, TJ, Betsy, Oli, Camilla. WP#12444, WP#12496, moved away from HAM2 in 83686.
We attempted to move IOT2L back into place on Friday but the cleanroom had been moved into the way of the final table position for ISI work and one of the casters of the table was stripping rubber off one side and kept rubbing so we paused.
This morning the cleanroom was moved out of the way (+X by ~1-2 feet) and then Randy finished moving IOT2L into place with the help of the forklift. Once IOT2L's corners were over the markings made in 83296 and the height was correct, we re-attached the bellows, removed the guillotines and replaced the guillotine slot covers. Photos attached. The HAM2 VP furthest to -Y never had a guillotine slot cover, so one was added.
Oli, Daniel, Fil, Betsy, Rahul
We have re-installed SUS RM1 and RM2 Tip Tilt suspensions into HAM1 chamber which has the new ISI table - see several pictures attached below. RM1 is on the left (towards PSL side) hand side of this picture and RM2 is on the right (zoomed in). Both the suspensions are positioned roughly as per D1000313_V19, and will be fine tuned (pitch and yaw of the mirror as well) during beam alignment work. The blade springs of both the suspensions have been un-muted - see LHO alog 83984 for details.
Both RM1 and RM2 have been plugged-in to their electronics chain. We had to perform some troubleshooting with RM1 after observing grounding issues. At first Fil and Daniel ruled out any issues with the satellite box and in-air cables. After some investigation, the grounding issue was suspected to be coming from the in-vacuum quadrupus cable (connecting to the Bosem), which is an old cable and looks worn out too.
This morning I replaced the old Bosem cable (D1000228_v3 s/n S1105240) with a 25in long (D2100049 S/N 2200358) cable. Before connecting it to the Bosem, Daniel and I verified that the cable is fine (i.e not grounding) and later on we connected each pin (Bosem) one by one. We had to re-adjust the Kapton tape (installed for additional shielding) since the cable bosem connector was grounding to the chamber. After all these modifications, we can confirm that RM1 and RM2 are free from any grounding issues for now. We will check again before closing the chamber.
Next, I will start taking measurements on these suspensions and will post their health report soon.
Things to do on RM1 (hardware side),
1. Find and replace the new cable (25in long D2100049 S/N 2200358) ) which has just been installed with another one since this one is missing pin no. 1.
2. replace the old style cable table bracket which is currently in HAM1 for RM1 with a new one for the new style of cable. The old style cable brackets don't fit.
Also, adding a picture of the chamber with labels showing RM1 and RM2 suspension.
Electronics testing of both the sus is still ongoing.
Adding a reminder here that the sign of both RM1 and RM2 OSEM readbacks have changed, after the discovery that "more light" = "more negative signal" in LHO:84027.
Tagging EPO with the cool new digs inside HAM1 and on the new ISI.
Oli, Matt, Camilla
Late entry, Jim and I worked the last few half days to lace up all of the cabling for SUS, SEI, and IO/ISC in prep for the main reinstall of table components. Fil, some Richard, and I did preliminary ground loop checks on all SUS and IO/ISC cables so we have a handle on the situation before complicating with components. I routed cables on the table top in an attempt to be near where things plug in but also not in the way of landing objects. Further dressing and coiling will be needed after troubleshooting plugins with components as we go. Pics of the pre round of cabling.
Oli, Camilla
This morning we swapped the direction of HW1 so that it is facing the same as before. We also placed L2, M15, LSC POP A and ASC POP X although the diodes are not cabled up yet. They can be next week as Daniel confirmed chassis are powered off.
ASC POP X is new, the box is marked D1102004-v6 S/N 016 S1300637, ICS link. Have added this to the D1000313 BOM googledoc and HAM1 ICS assembly.
Tagging with EPO to document the process.