FAMIS 26290


Laser Status:
    NPRO output power is 1.831W (nominal ~2W)
    AMP1 output power is 64.55W (nominal ~70W)
    AMP2 output power is 137.1W (nominal 135-140W)
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 6 days, 23 hr 49 minutes
    Reflected power = 21.13W
    Transmitted power = 105.6W
    PowerSum = 126.7W

FSS:
    It has been locked for 0 days 1 hr and 37 min
    TPD[V] = 0.6479V

ISS:
    The diffracted power is around 1.9%
    Last saturation event was 0 days 1 hours and 37 minutes ago

Possible Issues:
    AMP1 power is low
    PMC reflected power is high
    FSS TPD is low
    ISS diffracted power is low

FAMIS 21189

Nothing much of note this week. PMC REFL is still increasing slowly while PMC TRANS is decreasing.

The FSS TPD signal is still low, and since I wasn't able to increase it much last week, we plan to go into the enclosure and tune up the FSS path on-table soon to fix it.

There were a few PCAL SDF diffs when we made it back to low noise today at CALEY. It looked like these were loaded into epics from teh safe.snap and these numbers disagreed with what was saved in the observe.snap file. I confirmed with Franscisco that this was the case, and he had me verify that they agreed with alog77386. I then also saved these new values in the safe.snap file as well. Interestingly, these channels are not monitored in the safe.snap.

I ran A2L while we were still thermalizing, might run again later. No change for ETMY but the ITMs had large changes. I've accepted these in SDF, I reverted the tramps that the picture shows I accepted. I didn't notice much of a change in DARM or on the DARM blrms.

         ETMX P
Initial:  3.12
Final:    3.13
Diff:     0.01

         ETMX Y
Initial:  4.79
Final:    4.87
Diff:     0.08

         ETMY P
Initial:  4.48
Final:    4.48
Diff:     0.0

         ETMY Y
Initial:  1.13
Final:    1.13
Diff:     0.0

         ITMX P
Initial:  -1.07
Final:    -0.98
Diff:     0.09

         ITMX Y
Initial:  2.72
Final:    2.87
Diff:     0.15

         ITMY P
Initial:  -0.47
Final:    -0.37
Diff:     0.1

         ITMY Y
Initial:  -2.3
Final:    -2.48
Diff:     -0.18
 

Mon Aug 26 08:02:15 2024 INFO: Fill completed in 2min 13secs

Short but a good fill. Gerardo is reducing the LLCV.

Jordan cleared an ice buildup at the end of the discharge pipe.

TJ, Jonathan, EJ, Dave:

Around 01:30 this morning we had a Dolphin crash of all the frontends at EY (h1susey, h1seiey, h1iscey). h1susauxey is not on the Dolphin network as was not impacted.

We could not ping these machines, but were able to get some diagnostics from their IPMI management ports.

At 07:57 we powered down h1[sus,sei,isc]ey for about a minute and then powered them back on.

We checked the IX Dolphin switch at EY was responsive on the network.

All the systems came back with no issues. SWWD and model WDs were cleared. TJ is recovering H1.

TITLE: 08/26 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Aligning
OUTGOING OPERATOR: Tony
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 0mph Gusts, 0mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY: Looks like we lost the SUSEY and ISCEY front ends. This created connection errors and put many Guardians, including IFO_NOTIFY, into an error state. Contacting CDS team now.

TITLE: 08/26 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Observing at 136Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Currently Observing and have been Locked for 1.5 hours. We were down for a while because of the big earthquake from Tonga, and recovery took a while because we were having issues with the ALSX crystal frequency. Eventually it fixed itself, as it tends to do. We got some lower state locklosses but eventaully were able to get back up with just the one initial alignment I ran when I first started relocking.
LOG:

23:30 Observing and Locked for 4 hours
23:41 Lockloss due to earthquake
01:07 Started trying to relock, starting initial alignment
    - ALSX crystal frequency errors again
    - Eventually went away, I didn''t do anything besides toggling Force and No Force
02:05 Initial alignment done, relocking
02:09 Lockloss from FIND_IR
02:17 Lockloss from OFFLOAD_DRMI_ASC
02:21 Lockloss form LOCKING_ALS
03:21 NOMINAL_LOW_NOISE    
03:23 Observing

TITLE: 08/25 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 140Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY:

Fairly easy shift, with one lockloss in the middle and had a BIG Tonga EQ to end the shift with!
LOG:

• 1801-1938 Lockloss (after 6.5hr lock)
  • DRMI & PRMI looked bad; started an Initial Alignment (1827-1849)
  • Probably could have saved time if I had just went with an alignment from the start.
• 1855-1917 Checks in the lvea & then did an lvea sweep (robert)
• 1925 Car pulls up near gate, 1932 a cyclist rode around parking lot 
• 2310 Got the go-ahead from Richard to offload a truck which was delivering an AC unit for the VPW.
• 2341 H1 goes down from a big EQ!

TITLE: 08/25 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: EARTHQUAKE
    Wind: 14mph Gusts, 8mph 5min avg
    Primary useism: 0.54 μm/s
    Secondary useism: 0.62 μm/s
QUICK SUMMARY: Just lost lock from a large earthquake that's going to keep us down for a bit. Before that, we had been locked for 4 hours.

Lockloss 08/25 @ 23:41UTC due to 6.9 earthquake in Tonga. We were knocked out really quickly by the S-wave and the R-wave won't be arriving for another ~30 mins, so it might be a while before we're back up.

For FAMIS 26286:
Laser Status:
    NPRO output power is 1.829W (nominal ~2W)
    AMP1 output power is 64.59W (nominal ~70W)
    AMP2 output power is 137.5W (nominal 135-140W)
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 5 days, 19 hr 56 minutes
    Reflected power = 21.01W
    Transmitted power = 105.7W
    PowerSum = 126.7W

FSS:
    It has been locked for 0 days 7 hr and 40 min
    TPD[V] = 0.6499V

ISS:
    The diffracted power is around 2.3%
    Last saturation event was 0 days 6 hours and 33 minutes ago

Possible Issues:
    AMP1 power is low
    PMC reflected power is high
    FSS TPD is low

TITLE: 08/24 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Oli
SHIFT SUMMARY:

Have had the BS camera die on us a couple times in the last 24hrs (this requires contacting Dave to restart the camera's computer--atleast until this camera can be moved to another computer), and so the beginning of the shift was restoring this and also figuring out why H1 had a lockloss, BUT did not drop the Input Power down from 61W to 2W.

After the camera issue was fixed, ran an alignment with no issues, and then took H1 all the back to NLN also with no issues.  

Then completed taking Calibration measurements after 1.5hrs and 3hrs.  Oli also ran LSC Feedforward measurements......

Then there was ANOTHER BS Camera Computer Crash!  Dave brought us back fast.  

Now back to OBSERVING!
LOG:

• Arrived to see that H1 was stuck at ADS TO CAMERAS, BUT had had a lockloss.  ALSO: Input Power did not change after the lockloss---so, 61W was being dumped to MC REFL!  Mystery as to why this happened.  I took H1 DOWN and this took care of the High Power onto MC REFL.  
• 1611-1641 INITIAL ALIGNMENT
  • x+y green arms were way out and needed INCREASE FLASHES
  • Everything else went fine.
• 1635 Noise hunting in Mechanical Room off and on today (robert)
• 1643-1728 Locking H1 & then getting stuck at ADS TO CAMERAS (same as last night)---Noticed that the CAMERA SERVO had stalled and noted issues with CAM1 Pit & Yaw.  Posted this onto LIGO Chat and Ryan Short mentioned it's probably due to the BS' camera.  Sure enough it had died!
• 1800-1807 Contacting Dave to restart the BS camera
• Save & Loaded LASER_PWR.py  (It had already been edited for the change to 61W.)
• 1812 NLN for H1
• 1946-2015 Ran Calibration after H1 was locked for 90min.
• 2042 H1 back to OBSERVING (1st time since July12th!)
• 2113-2301 Out of Observing:  Running Thermalized Calibration + LSC Feedforward measurements
  • Since the BS Camera happen to die during Oli's last LSC FF measurement for PRCL, they ran it again.
• 2226 - 2243 BS Camera was down again!  (Dave brought it back for us pretty fast.)
• 2301 OBSERVING

R. Short, F. Clara

In the ongoing effort to mitigate the 9.5Hz comb recently found to be coming from the PSL flow meters (alog79533), this afternoon Fil put the PSL control box in the LVEA PSL racks on its own, separate 24V bench-top power supply. Once I shut down the PSL in a controlled manner (in order of ISS, FSS, PMC, AMP2, AMP1, NPRO, chiller), Fil switched CB1 to the separate power supply, then I brought the system back up without any issues. I'm leaving the ISS off for now while the system warms back up. I'm leaving WP12051 open for now until enough data can be collected to say whether this separate supply helps the 9.5Hz comb or not.

Please be aware of the new power supply cable running from under the table outside the PSL enclosure to behind the racks; Fil placed a cone here to warn of the potential trip hazard.