Ryan C, Jonathan, Dave:

Starting around 18:28 Sun 15jan2025 the control room reported name resolution issues within CDS. Also the GC WIFI went offline.

The CDS alarm system froze up at 18:28, which agrees with the time the other services went offline.

Jonathan is reporting issues contacting GC DNS and managment machines, indicating this could be a GC issue. 

00:16 UTC lockloss

TITLE: 06/15 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 146Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Mostly quiet day with one lockloss in the afternoon and an easy reacquisition. After relocking, we've been having to touch up SQZ a couple of times. H1 has now been locked for 1.5 hours.

• 17:15 - EQ mode activated for M5.6 quake from Peru
• 20:52 - Lockloss - alog85057
  • Running alignment, finished @ 21:17
• 22:07 - Low noise
  • Fixing SQZ angle - alog85058
• 22:34 - Observing
• 23:07 - Dropped observing to fix SQZ ASC
• 23:10 - Observing

TITLE: 06/15 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 122Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 11mph Gusts, 6mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY:

• We've been locked for almostan hour
• 22:34 UTC Observing
• It seems like the SQZer has pulled us away from the good spot Ryan put us in earlier
  • Hopefully it will thermalize and fix itself?

Lockloss @ 20:52 UTC after just under 15 hrs locked - link to lockloss tool

No obvious cause.

State of H1: Observing at 151Mpc

H1 has now been locked and observing for 13 hours. Earthquake rolled through a couple hours ago, but otherwise a quiet morning.

Sun Jun 15 10:12:39 2025 INFO: Fill completed in 12min 35secs

FAMIS 26426

Laser Status:
    NPRO output power is 1.852W
    AMP1 output power is 70.39W
    AMP2 output power is 140.6W
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 27 days, 1 hr 38 minutes
    Reflected power = 23.08W
    Transmitted power = 105.6W
    PowerSum = 128.7W

FSS:
    It has been locked for 0 days 11 hr and 32 min
    TPD[V] = 0.8236V

ISS:
    The diffracted power is around 4.0%
    Last saturation event was 0 days 12 hours and 51 minutes ago

Possible Issues:
    PMC reflected power is high

TITLE: 06/15 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 148Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 7mph Gusts, 4mph 3min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY: H1 has been locked and observing for almost 9 hours and range looks good.

• Wind and microseism very low
• All other systems nominal

TITLE: 06/15 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 145Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY: We stayed locked or most of the shift, ~6.75 hours. I ran a coherence measurement, there's a lot of >10Hz CHARD_P, and <10Hz CHARD_Y. We're currently relocking at DRMI.
LOG: No log

• 22:15 UTC Observing
• 03:52 UTC lockloss
• 04:06 No flashes, I started a manual initial alignment, skipped green arms as they looked well aligned
  • INPUT ALIGN, auto
  • Requested PRX_LOCKED, PRM had to be moved a decent amount in both P & Y to maximize ASC_AS_DC_NSUM and to bring ASC_INP1_{P,Y}_INMONs to zero
  • MICH BRIGHT, auto
  • SRC, auto, finished at 04:25
• Now ALS_X keeps getting pulled in the wrong direction by the WFS, I shouldn't have skipped GREEN_ARMS. I went back and did the GREEN_ARMS alignment
• The flashes still aren't great, I'm had to move the BS in PITCH during PRMI

03:52 UTC lockloss

TITLE: 06/14 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 148Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Only one lockloss today and two purposeful drops from observing for calibration sweeps and SQZ fixing. DARM high frequency still doesn't look amazing, so there might need to be some SQZ angle adjustment. H1 has now been locked for 2.5 hours.

• 18:30 - Dropped observing for calibration sweeps - alog85045
• 19:00 - Observing
• 19:35 - Lockloss - alog85046
  • Running alignment
• 21:08 - Observing
• 22:00 - Dropped observing to fix SQZ ASC - alog85048
• 22:15 - Observing

TITLE: 06/14 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 146Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 20mph Gusts, 9mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.07 μm/s
QUICK SUMMARY:

• We've been observing for almost 2 hours
• Microseism is low and decreasing
• Wind is low/moderate
• Range is OK, we could maybe stand to run a SQZ angle adjust
• I put my settings for ITMX13 into lscparams as they've been working well for multiple locks, FM1+FM4+FM10, G= -0.2
  • VIOLIN_DAMPING could use a reload

I took H1 out of observing for 15 minutes starting at 22:00 UTC when I noticed the range looked low and the SQZ_MANAGER Guardian reported that the SQZ ASC AS42 wasn't on.

Reminding me of the SQZ ASC issues we've been seeing early in lock stretches, I requested SQZ_MANAGER to 'RESET_SQZ_ASC_FDS' and then back to 'FREQ_DEP_SQZ', but the SQZ_LO_LR Guardian reported low OMC_RF3 power.. I then set SQZ_MANAGER to 'DOWN' while I trended ZMs to the last lock when squeezing was good. ZM6 was very far off according to OSEMs (several hundreds of µrad in both pitch and yaw), so I moved it back to where it was at the end of the last lock and requested SQZ_MANAGER again to 'FREQ_DEP_SQZ'. This time, there were no holdups and squeezing was restored, so I promptly returned H1 to observing. BNS range seems to have recovered and SQZ BLRMs look better also.

Lockloss @ 19:35 UTC after 10.5 hrs locked - link to lockloss tool

No obvious cause, but this lockloss was fast (much like others of late).