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.

Site Inspection 30Dec2025

LExC is in great shape no indication of problems.  I did have some visitors that didn't want to accept no as the answer to going into LExC.  They just wanted some pictures.  I explained it is a big empty building right now but they were undetered at wanting pictures.

WS Dept of Health was on site checking the remote dosimiter they monitoy off our the access drive.

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 had two 5 gallon water bottles sitting outside the door.   I moved them into the Lobby.  Other than that builing looks great. Landscapers were working on removing vines from the building on the patio side.

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

Mid and Ends were fine.  Mx had the lights on when I arrived.  They are off now.

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

FCES in great shape.  FC Enclosure could use a cleaning but is fine.

Tue Dec 30 10:06:14 2025 INFO: Fill completed in 6min 11secs

CP1 Dewar fill started 09:34 and was ongoing at time of CP1 fill.

TITLE: 12/29 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: 17mph Gusts, 11mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.32 μm/s 
QUICK SUMMARY:

• CDS, SEI, SUS look as expected
• Temperatures look stable
• No new notifications on DIAG_MAIN
• Nothing new or concerning on the cameras
• A look at the EY wind fence

*I misremembered the schedule and also checked in on Friday, whoops sorry Tony.

Mon Dec 29 10:06:20 2025 INFO: Fill completed in 6min 17secs

Sun Dec 28 10:07:58 2025 INFO: Fill completed in 7min 55secs

Sat Dec 27 10:10:00 2025 INFO: Fill completed in 9min 56secs

Utilizing the buddy system, (R. McCarthy) I walked the site today and found no immediate issues. The first half of x2 is a barely passable but am working with VAC to determine the next delivery location. To that end, all CP access points are largely unobstructed. The wind fence shows no additional damage at EY, and EX is still intact. FAC systems are operating normally. Large heat load spaces felt cool, no doors were found ajar and the water system is behaving normally (presently full @ ~66.5"). VEA's were all business as usual. 

During the visit I noted a magmeter flow value of 1010675 which should serve as a useful metric in determining any leak/bleeding of the potable system. While at the water room, domestic supply pressure appeared to be holding well. A follow up on the morning of 1/5 will be performed to understand usage over the break while little to no demand is applied.

T. Guidry

TITLE: 12/26 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: 25mph Gusts, 16mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.90 μm/s 
QUICK SUMMARY:
Cameras:
Everything looks fine currently.  
Lights were left on in the Woodshop & OSB 163, ifsomeone is heading to site. 


SEI: Looks as I'd expect it to look. HAM7 is red because it's had people in and out of it since before the break. I imagine leaving that watchdog tripped is fine.
SUS: Seems to be looking reasonable as well considering the OPO and Jack work that was being done before break.

PSL Status: 

Laser Status:
    NPRO output power is 1.84W
    AMP1 output power is 70.51W
    AMP2 output power is 139.4W
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 16 days, 17 hr 48 minutes
    Reflected power = 25.41W
    Transmitted power = 106.2W
    PowerSum = 131.6W

FSS:
    It has been locked for 2 days 23 hr and 15 min
    TPD[V] = 0.5254V

ISS:
    The diffracted power is around 3.7%
    Last saturation event was 2 days 22 hours and 25 minutes ago

Possible Issues:
        PMC reflected power is high
 

VEA Temps:

LVEA looks good for the last day.

The HAM Shaq looks good.

Arm VEAs

Everything looks as I'd expect it to look, no issues to be seen. 

Fri Dec 26 10:11:07 2025 INFO: Fill completed in 11min 3secs

Thu Dec 25 10:10:03 2025 INFO: Fill completed in 10min 0secs

Wed Dec 24 10:12:26 2025 INFO: Fill completed in 12min 22secs

TITLE: 12/23 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: A fittingly quiet day today. HAM7 alignment work wrapped up this morning, so I transitioned the LVEA to Upgrade Phase Laser SAFE for the break. The stair move from EY has been postponed to the new year due to high tumbleweed interference. Control room workstations (with the exception of operator and VAC stations) and wall FOMs (with the exception of CDS, VAC, and temperature monitors) have all been shut down.
LOG:

FAMIS 27831, last checked in alog88548

No water was added, filters looked good, and Dixie cup was dry. Updated T2200289 spreadsheet.

The PSL PMC and RefCav have been slightly misaligned since the power outage, so today I took a bit of time to touch these up before the holiday break.

With the ISS off, I was able to only improve the PMC a bit, bringing PMC TRANS from 105.7W to 106.3W and PMC REFL from 25.5W to 25.2W. I then re-engaged the ISS and slightly adjusted the RefSignal to bring the diffracted power back to around 4%. Moving onto the RefCav, here I got somewhat better improvements, bringing the TPD signal up from 519mV to 530mV.