anthony.sanchez@LIGO.ORG - posted 16:58, Tuesday 29 September 2026 (92107)
Tuesday Maintenance Day OPS Report
TITLE: 09/29 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:
Work today:
ISIs on HAMs2 and 3 were both tripped today. But the IMs were trended back using the driftmon scopes found under the slider scopes button on the LSC-->Locking.adl
Dave has an awesome CDS summary link here.
- VAC - EX GV 20 Manual open per procedure (will take all day) ----> Still in progress GV19 And GV20 are now both softclosed.
Jim - Restart CRSPROC. Some math is missing, add factor 8x that is missing from the contrast calculation for CRS. No daq restart.CDS/Jim/Kissel - Restart isiham2-5, seiproc models to switch out which CPS signals are used for reconstructing the ISI DIFF super sensors.CDS - isiham6 model restarts to add IPC connections for CRS laser driverCDS - Convert all usercode usages of arctan in crsprocCDS - observe.snap file updates for 10 models, safe.snap chan updates for: sfc2, susauxb2h34, iopsusb13, calcsCDS - virtual machine (proxmox VM) cluster work, hopefully not impacting for if it is, user interfaces will be down for the day- Kissel - HAM2-3 driven measurements ???
- Fil - Install cable for NN at EY, vac rack to BSC10
Fil - install camera at EX in air handler roomKinda..... this one is not working now.- Fil - Investigate 3IFO monitoring signal loss, dust mons offline at times since tied together ---> ?
VAC - LN2 delivery CP3 (MY) & CP8 (EX)- FAC - Churn test of fire pumps ----> ?
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 14:34 | FAC | Randy | X-arm | N | sealing cracks in beam tube enclosure | 19:37 |
| 14:35 | CDS | Jonathan | MSR | N | Prox mox upgrades | 16:35 |
| 14:55 | FAC | Kim | EY | N | Technical cleanin & resupply | 17:17 |
| 15:21 | FAC | Christina | Woodshop & receiving. | N | Forklifting parts. | 16:21 |
| 15:24 | FAC | Chris | LVEA | N | spot painting the LVEA walls. | 17:54 |
| 15:50 | SUS | Oli | CR | n | BS meas | 16:05 |
| 16:09 | EE | Fil | EX | N | Camera Work | 18:16 |
| 16:13 | Tour | Elenna + 5 | LVEA | N | LVEA tour | 16:50 |
| 16:14 | FAC | Kim | LVEA | No | technical Cleaning & Resupply | 19:03 |
| 16:46 | CDS | Dave | Remote | N | Restarting ALL HAM Models except 6 | 17:31 |
| 16:47 | PEM | Miranda | Mech room | N | Taking pictes of SEI PEM kits. | 16:53 |
| 16:48 | EE | Marc & Arnaud Jim | LVEA | N | Pulling CRS Cables. Marc out early | 19:55 |
| 16:49 | DetEng | Betsy | CER | N | Getting parts. | 16:59 |
| 16:54 | VAC | Travis & Jordan | LVEA | N | Looking for tools. | 17:03 |
| 16:57 | TCS | Camilla | LVEA | Yes | Working on cheta | 18:09 |
| 17:32 | CDS | Dave | Remote | N | DAQ restarts for SEIPROC ,CRSPROC for HAM6 | 18:05 |
| 17:58 | VAC | Gerardo, Travis, Jordan | EX | n | Closing GV19 | 19:58 |
| 18:12 | TCS | Camilla & James | LVEA | N | Moving the CHETA table. | 18:39 |
| 18:37 | EE | Fil | EY | N | Camera Work | 19:51 |
| 18:40 | TCS | Camilla | CHETA Lab | yes | plugging in a cheta to the beckhoff. | 18:50 |
| 19:36 | FIT | Noah | X-arm | N | Running X arm | 20:15 |
| 19:49 | FAC | Randy | X-Arm | n | Sealing Beam tube enclosure. | 21:41 |
| 20:19 | VAC | Tyler, Besty, Jordan, Gerardo, Travis | EX | N | working on GV20 | 23:16 |
| 22:40 | SEI | Jim & Arnaud | LVEA | N | working on CRS near TCS rack | 23:21 |
| 23:10 | PCAL | Carolyn, Tony | PCAL Lab | Local | Loosening screws to get a better measurement | 23:43 |
| 23:17 | FAC | Tyler | EX | N | Last min EX Vac work | 00:17 |