TJ, Camilla. We turned off the HWS SLEDs to save their lifetime as the HWS hasn't been well aligned since our April SRC alignment shift. These channels are not in sdf. We started to realign them in 78083 but paused as may change our SRC alignment  again.

Closes FAMIS 28360

The in-lock charge measurements were not run this week.

There was two different sets of anchors drilled for the EMT support in the LVEA, one set on the technical slab, near the termination slab, and the second set on the termination slab (Y-Arm).

(Gerardo)
Anchor holes were drilled for two unistrut post bases, they are for supporting the long run of EMT, anchors were dropped in and unistrut post base was fasten, no issues to report.

(Janos, Isaiah, Gerardo)
The 3 high voltage cables, for the filter cavity tube ion pumps, that were pulled during the last couple of weeks were switched from their temporary controller, in the LVEA, to their permanent controller, in the mechanical room, no issues encountered during the switching process.  Next step is to get the controller signal cable connected to the vacuum rack, and get them into their respective MEDM screens.

(Isaiah, Gerardo)
Drilled the last four holes for the short supports, the post bases were anchored without problems, and the rest of the components were fasten to the footings to support the EMT run.

The LVEA has been swept, the only thing I noticed was an unused extension cable left plugged in next to the bier garten which I unplugged.

FAMIS tasks 24924 and 24948, WP 11941

Procedure checklist for both stations completed.  No issues were identified at this time.

MY: Scroll pump hours: 80.6

       Turbo pump hours: 216

       Crash bearings: 100%

EY: Scroll pump hours: 79.2

       Turbo pump hours: 1284

       Crash bearings: 100%

Tue Jun 25 10:08:05 2024 INFO: Fill completed in 8min 2secs

Gerardo confirmed a good fill curbside.

[Dave, Erik]

Dave found that DACs in h1sush2a were in a FIFO HIQTR state since 2024-04-09 11:33 UTC.

FIFO HIQTR means that DAC buffers had more data than expected.  DAC latency would be proportionally higher than expected.

The models were restarted, which fixed the issue.

[Erik, Marc, Dave]

h1susex now has a a LIGO 28-bit 32-channel DAC installed.

The timing card was also swapped out for a new card with firmware that's compatible with the DAC.

h1susex now boots from h1vmboot0 running models built with RCG 5.3.0, necessary to support the DAC, as opposed to the rest of the front ends which boot from h1vmboot1 running RCG 5.1.4.

The timing fanout is reporting an firmware version error on the port for h1susex  (physical port 4, medm port 3).  This is probably because the firmware on the timing card is new.  We think we can run with this error.

DAQ Failure

After the install, DAQ leg 0 was restarted but it only connected to h1susex.  When setting up bootserver h1vmboot0, I'd accidentally replaced the DAQ master file.  Restoring the old master file resolved the issue.

Fil, Camilla

After finding that the sqz laser glitches may be linked ot the last 9th May TTFSS swap 78549, today Fil and I swapped  D2300329 Laser Locking Fiber Beat Note Chassis back to the original.

Installed Chassis S2300258
Removed Chassis (but left in the rack) S2300259

To avoid issues seen after swapping chassis before 77754, 77746 we may want to adjust TTFSS beatnote threshold polarization as RFAMP has dropped from 7.7 to 1.8dB. Plot

TITLE: 06/25 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.06 μm/s
    Secondary useism: 0.08 μm/s
QUICK SUMMARY: We went down earlier to start our early maintanence day.

WP11928

TJ, Marc, Dave, Erik

h1susex is currently powered down, we are installing the LIGO 28AO32 DAC card.

I ended the lock to start an early maintenance today in coordination with LLO. To prep for the EX CDS work I transitioned:

• SEI_ENV to Maintenance (verified CPS_DIFF was off)
• SEI_ETMX to ISI_DAMPED_HEPI_OFFLINE
• SUS_ETMX to SAFE

Dave was removing the link for the software watchdog as I was typing this. CDS team should be ready to go.

TITLE: 06/25 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Observing at 146Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Quiet shift with H1 locked the whole time; current lock stretch is up to 11 hours.

• 23:04 - Dropped observing from BS camera (26) getting stuck; Dave restarted
• 23:10 - Resumed observing
• 23:42 - Dropped observing for short commissioning activities
  • SRCL FF (alog78632), no-SQZ time, improved SQZ angle
• 00:17 - Resumed observing

LOG:

State of H1: Observing at 153Mpc; locked for almost 7 hours.

Dropped observing from 23:42 to 00:17 UTC to implement new SRCL FF (alog78632), get 12 minutes of no-SQZ time (from 23:52 to 00:04 UTC), and optimize SQZ angle with the SCAN_SQZANG Guardian state. Otherwise, it's been a quiet shift so far.

FAMIS 20703

There was an interesting jump down in NPRO output power at the same time as a jump up in AMP1 and AMP2 output powers earlier today. Pump currents and diode powers seem unchanged, so I'm not sure why a change in power like this would've happened.

PMC REFL is on the rise again, which seems to be bringing down PMC TRANS, ISS diffracted power, and RefCav transmitted power along with it. I can adjust the RefSignal to boost the diffracted power when we're next unlocked.

Jennie, Ryan S, Camilla

After Jennie's 78629 measurements, we fit the SRCL FF (not time for MICH). Possible we might add noise at 300Hz but this is FF looks overall better.

Old SRCLFF was FM2 with gain 1.18 (didn't account fort this is code but should have changed this to 1 for best iterative fitting). New FF is FM4 gain 1.18. Plot attached. SDF saved and ISC_LOCK edited and loaded.