TITLE: 01/05 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: HAM7 and JAC work continued today.                                    

19:32 UTC HAM1 ISI WD tripped

21:32 UTC DAQ restart

Jennie, Erik, Dave:

Jennie's new h1ascimc model was installed at 13:30 Mon 05Jan2026. This required a DAQ restart to add 2 slow channels.

At 13:32 we restarted the 1-leg, followed by the 0-leg at 13:37. GDS1 did not need a restart.

Following this DAQ restart we had 3 sponaneous restarts of FW1 after it had ran for 27:48, 8:02 and 6:22 minutes respectively. At the time of writing it has been running with no further restarts for an hour.

Mon Jan 05 10:04:11 2026 INFO: Fill completed in 4min 8secs

I increased the setting for thermocouple nominal max from 20C to 30C to match current values and remove a VAC-SDF diff.

Closes FAMIS38887 , last checked in alog88362

HAMs 1-4, 7 and BSC2 are in non nominal SEI states due to the vent work.

2026-01-05 08:58:15.266231
There are 14 T240 proof masses out of range ( > 0.3 [V] )!
ETMX T240 2 DOF X/U = -1.625 [V]
ETMX T240 2 DOF Y/V = -1.709 [V]
ETMX T240 2 DOF Z/W = -0.94 [V]
ITMX T240 1 DOF X/U = -2.28 [V]
ITMX T240 1 DOF Y/V = 0.313 [V]
ITMX T240 1 DOF Z/W = 0.485 [V]
ITMX T240 3 DOF X/U = -2.433 [V]
ITMY T240 3 DOF X/U = -1.065 [V]
ITMY T240 3 DOF Z/W = -2.971 [V]
BS T240 1 DOF Y/V = -0.372 [V]
BS T240 3 DOF Z/W = -0.449 [V]
HAM8 1 DOF X/U = -0.316 [V]
HAM8 1 DOF Y/V = -0.444 [V]
HAM8 1 DOF Z/W = -0.755 [V]

All other proof masses are within range ( < 0.3 [V] ):
ETMX T240 1 DOF X/U = -0.007 [V]
ETMX T240 1 DOF Y/V = -0.041 [V]
ETMX T240 1 DOF Z/W = -0.024 [V]
ETMX T240 3 DOF X/U = -0.016 [V]
ETMX T240 3 DOF Y/V = -0.069 [V]
ETMX T240 3 DOF Z/W = -0.045 [V]
ETMY T240 1 DOF X/U = 0.066 [V]
ETMY T240 1 DOF Y/V = 0.208 [V]
ETMY T240 1 DOF Z/W = 0.266 [V]
ETMY T240 2 DOF X/U = -0.075 [V]
ETMY T240 2 DOF Y/V = 0.226 [V]
ETMY T240 2 DOF Z/W = 0.049 [V]
ETMY T240 3 DOF X/U = 0.282 [V]
ETMY T240 3 DOF Y/V = 0.096 [V]
ETMY T240 3 DOF Z/W = 0.149 [V]
ITMX T240 2 DOF X/U = 0.158 [V]
ITMX T240 2 DOF Y/V = 0.283 [V]
ITMX T240 2 DOF Z/W = 0.263 [V]
ITMX T240 3 DOF Y/V = 0.139 [V]
ITMX T240 3 DOF Z/W = 0.086 [V]
ITMY T240 1 DOF X/U = 0.07 [V]
ITMY T240 1 DOF Y/V = 0.147 [V]
ITMY T240 1 DOF Z/W = 0.021 [V]
ITMY T240 2 DOF X/U = 0.021 [V]
ITMY T240 2 DOF Y/V = 0.239 [V]
ITMY T240 2 DOF Z/W = 0.152 [V]
ITMY T240 3 DOF Y/V = 0.085 [V]
BS T240 1 DOF X/U = -0.107 [V]
BS T240 1 DOF Z/W = 0.123 [V]
BS T240 2 DOF X/U = -0.031 [V]
BS T240 2 DOF Y/V = 0.038 [V]
BS T240 2 DOF Z/W = -0.052 [V]
BS T240 3 DOF X/U = -0.222 [V]
BS T240 3 DOF Y/V = -0.289 [V]

Assessment complete.
Averaging Mass Centering channels for 10 [sec] ...

2026-01-05 08:58:27.267417
There are 2 STS proof masses out of range ( > 2.0 [V] )!
STS EY DOF X/U = -4.63 [V]
STS EY DOF Z/W = 2.377 [V]

All other proof masses are within range ( < 2.0 [V] ):
STS A DOF X/U = -0.492 [V]
STS A DOF Y/V = -0.851 [V]
STS A DOF Z/W = -0.499 [V]
STS B DOF X/U = 0.153 [V]
STS B DOF Y/V = 0.944 [V]
STS B DOF Z/W = -0.303 [V]
STS C DOF X/U = -0.867 [V]
STS C DOF Y/V = 0.801 [V]
STS C DOF Z/W = 0.594 [V]
STS EX DOF X/U = -0.218 [V]
STS EX DOF Y/V = -0.16 [V]
STS EX DOF Z/W = 0.036 [V]
STS EY DOF Y/V = 1.254 [V]
STS FC DOF X/U = 0.161 [V]
STS FC DOF Y/V = -1.157 [V]
STS FC DOF Z/W = 0.625 [V]
 

FAMIS 27701, last checked in alog88650

The script reports high frequency noise is elevated for HAM1_V3, HAM7_V{1,2,3} which makes sense as they're vented.  ITMX_ST1_V1 also reports elevated noise, ETMX_ST1_{H1,V3} are slightly elevated at high frequency.

HAMs 1-4 are still locked and the SEI configuration for the BS is in ISOLATED_DAMPED.

TITLE: 01/05 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: 12mph Gusts, 6mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.31 μm/s 
QUICK SUMMARY:

• HAM1 and HAM7 work today
• Picket fence IOC seems to not be running (CDS)

Sun Jan 04 10:09:35 2026 INFO: Fill completed in 9min 31secs

At 9:42p local I received a cell alert declaring a loss of chilled water supply at End X. After remotely logging into FMCS I observed that the lead chiller (1) was in alarm and the CH-1 supply temp was hovering around 54F. I've since toggled the lead lag, and manually forced chiller 2 and chilled water pump 2 on. Given the low outside air temps and the lack of temp demands that vent require, this should suffice until all return from the break where we can investigate further.

T. Guidry

Sat Jan 03 10:09:51 2026 INFO: Fill completed in 9min 48secs

There were some SEI trips earlier today due to an earthquake. Dave went in and reset the software WDs earlier (88671), so to get the system back up to where it was before the earthquake, I went through and reset ISI and HPI to nominal for the chambers that needed them reset (aka not resetting them for the systems where we already have them down due to venting). Tony's overview and WD screenshots from Wednesday are a good reference for what state everything was in before the earthquake. This is what the OPS Overview looked like before I started resetting everything. Everything now that needed to be reset is back how it was before the earthquake (overview now).

Upcoming LN2 deliveries at x mid and x end required some tumbleweed attention this afternoon. X1 is still largely clear and x mid should be easily accessible. The earlier half of X2 is the worst area. I was able to cut a single lane to X2 before the harvester jammed up beyond what I could free by myself. What remains in the harvester chute needs a few days to dry out. As do I.

As a follow up to my previous log I checked the magmeter in the water room which meters domestic supply to the site and found a reading of 1011247.

T. Guidry

Site Walk Through 2 Jan 2026

LExC is in great shape no indication of problems.

Staging building is in good shape.

VPW two ovens running and in the parameters that Chris told us.  Weld shop temperature was fine so no pipe issues.

LSB looks fine.  Tyler was in his office

OSB/LVEA everything was in order.  Kobelco running door covers billowing slightly.  No signs of problems.

Mid and Ends were fine.  

Carpenter shop/ water room fire pump room and electrical room were all fine.

FCES in great shape.  

I leave the site with, Tyler clearing a path to EX for LN2 delivery.  I am his phone buddy.

Fri Jan 02 10:03:34 2026 INFO: Fill completed in 3min 32secs

Both end station test mass Software Watchdogs tripped around 06:22 during an earthquake. The Seismic systems also tripped for ETMX and ETMY. The TMS suspensions did not trip.

At 10:30 I reset these SWWDs, end station SUS and SEI are driving again.

Thu Jan 01 10:04:27 2026 INFO: Fill completed in 4min 24secs

VACSTAT detected a small beamtube vacuum gas release originating at the EX BT-IonPump which is located at approx -300m from EX.

Pressure trend shows the pressure at PT527 increased from its baseline of 1.9e-09 to a max of 1.4e-08 Torr. Several seconds later the EX gauges showed a minimal increase when the dispersed molecules reached them.

PT527 had pumped back down to its baseline by 04:30, +50 minutes after the glitch.

VACSTAT raised a single-gauge alarm for PT527, its rate-of-rise did not trip (reached 40% of trip level) but its Delta-P did trip (reached130% of trip level).

At 08:39 I restarted the vacstat_ioc.service on cdsioc0 to clear this alarm. As before, HAM1's gauge is currently set to disabled.

TITLE: 12/31 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: 4mph Gusts, 1mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.68 μm/s 
QUICK SUMMARY:

Cameras:
Everything looks fine currently.  
No thing looksout of place. 

PSL status: 
Laser Status:
    NPRO output power is 1.824W
    AMP1 output power is 70.67W
    AMP2 output power is 139.6W
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 21 days, 20 hr 49 minutes
    Reflected power = 26.19W
    Transmitted power = 106.1W
    PowerSum = 132.3W

FSS:
    It has been locked for 8 days 2 hr and 17 min
    TPD[V] = 0.4524V

ISS:
    The diffracted power is around 3.1%
    Last saturation event was 8 days 1 hours and 27 minutes ago

Possible Issues:
    PMC reflected power is high

Wed Dec 31 10:04:32 2025 INFO: Fill completed in 4min 29secs

Short fill following the dewar top up yesterday.

Jennie W, Dave B,

Jeff and I put in a bypass in the h1ascimc model (see alog #88465) so we could put in the simulink infrastructure to switch between using the PSL periscope PZT as part of the IMC control or as part of the JAC control.

At the moment the switch 'H1:ASC-IMCJAC_PZTOUTSW' is set to ON which should let the IMC servo use the PZT.

However the logic I put in will not switch the feedback to take inputs from the JAC servo if I turn the switch off.

This is because Choice 2 and 3 in the picture are set to pass their first input if the switch output is '>= 0', so whichever state it is in the IMC PZT output will be sent to the DAC.

I have changed these choices to >0 so that the top input (IMC PZT output signal) will be sent to the DAC if the switch is 1 and the bottom input (JAC PZT output signal) will be sent to the periscope otherwise.

I committed the changed /opt/rtcds/userapps/release/asc/h1/models/h1ascimc.mdl to the svn.