H1 is back to observing at 157Mpc as of 20:01 UTC following commissioning time. Activities included DetChar safety injections (alog81518), SQZ script testing and tuning (alog81516), and I ran a magnetic injection suite starting at GPS 1416771605 since that hasn't been done in some time. A calibration sweep was not done as H1 was not thermalized during this commissioning window.

Vicky, Camilla

Vicky had copied over the LLO PSAMS scan scripts into sqz/h1/scripts/SCAN_PSAMS.py, it turns up the gain on the SQZ ASC and turns off SQZ_ANG_ADJUST before stepping the ZM4/5 PSAMS (using the new 80685 servo) to values we gave it

We had to pause SQZ_MANAGER as it was not letting us bring SQZ_ANG_ADJUST to DOWN. Also worked by taking SQZ_MANAGER to SCAN_SQZ_ANG.

Future improvements: Repeat now we have the ASC on. Can we do this in anti-squeezing to be faster (hard to use ASC). Do we need to have the servo turn off SQZ_ANG_ADJUST and scan SQZ ang at each step or can we just leave the servo running?

We also turned the FC beam-spot control on to test it again while we are thermalizing (worked fine) and turned it off before finishing commissioning: reverted sdfs so H1:SQZ-FC_ASC_INJ_ANG_{P,Y}_OUTPUT are frozen a, edited sqzparams and reloaded.

We tried adjusting the Fc de-tuning H1:IOP-LSC0_RLF_FREQ_OFS, starting value 30deg. Tried 28, 32 and 34.  Left FC detuning at 32. sdf here.

Ryan S, Sidd

Detchar Safety injections done. Injection start gpstime 1416765666.65

Gracedb Upload for the first waveform is https://gracedb.ligo.org/events/H528692/view/

Wed Nov 27 10:09:53 2024 INFO: Fill completed in 9min 50secs

Jordan confirmed a good fill curbside. TCs only just cleared the -80C trips (A=-87C, B=-85C). Might be increasing the trips to -70C if this trend continues. TCs started positive today, outside temp -1C.

Lockloss @ 16:01 UTC - link to lockloss tool

No obvious cause, but doesn't look like an IMC lockloss as the IMC stays locked for several hundred milliseconds after AS_A starts moving.

TITLE: 11/27 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 6mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.19 μm/s
QUICK SUMMARY: One lockloss overnight from an unknown cause, but H1 has been observing for just over 6 hours. Calibration/commissioning time today is slated for 16:30 to 20:00 UTC (08:30am to noon local).

• Extremely dense fog on-site with temps below freezing
• Wind low; secondary microseism still dropping and almost down to the 50th percentile

TITLE: 11/27 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 158Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY: 1 lockloss this shift (IMC tagged LL), DRMI struggled at first but after an IA relocking was smooth. There were FSS oscillations during initial alignment. The range has been hovering just under 160Mpc.
LOG:                                                                                                                                                                                                                                           

• 01:34 UTC lockloss
  • 01:55 I adjusted ETMY_Y a few steps as guardian wasn't making any progress on it (it had been trying for 20 minutes and already went through increase flashes and the camera looked very yawed). It locked almost immediately after my adjustments.
  • DRMI was taking a while to lock despite good flashes (200 and 150), even after a round of PRMI it was still not locking. It was able to lock once but as soon as ASC turned on it lost it
  • Sometimes I would see light on the HAM6 OMC TRANS camera while DRMI was flashing, I can't remember if this is typical
  • 02:48 UTC I dropped to do an IA as DRMI didn't seem to be making much progress
  • 03:00 UTC After finishing INPUT_ALIGN the IMC lost lock as usual but the FSS started oscillating and didn't stop for over 10 minutes, after it stopped the FSS and IMC relocked. alog81509
    • The FSS_NPRO_TEMP channel and the PMC_HV_MON have the same triangle shape during the first oscillation
    • Jason says if you turn off the ISS it should help the FSS to lock faster (OPS info) if this happens again
  • 03:30 UTC DRMI locked after 1.5 minutes now.
  • 04:05 UTC Observing
• I tested out the original settings for ETMY mode 1 as the microseism has decreased. It damped mode 1 but also slowly rang up mode 6. The new settings damped it faster without a noticeable mode6 rise.
• I also tried the original settings for ITMY mode5/6 and it seems to damp fine, the line is shrinking on DTT, the modes drive is converging and both long monitors (ITMY modes 10 & 20) are also going down. It looks to damp at the same rate as the new settings.

I went down to start an IA at 02:48 UTC as DRMI wasn't locking (it tried for a half hour) and the FSS and IMC unlocked after input align and the FSS has been oscillating for the past 10 minutes or so. As I posted this log it finally locked.

01:34 UTC lockloss

IMC tag, the IMC and ASC lost it at the same time and there was a small FSS oscillation (-2 to +4) 8 ms before. The FSS NPRO TEMP stepped up 30ms before the LL, the ISS also lost lock.

LHO EndX measurement made today.

python3 generate_measurement_data.py --WS "PS4" --date "2024-09-23"
Reading in config file from python file in scripts
../../../Common/O4PSparams.yaml
PS4 rho, kappa, u_rel on 2024-09-23 corrected to ES temperature 299.3 K :
-4.711436365635769 -0.0002694340454223 4.121866697713714e-05
Copying the scripts into tD directory...
Connected to nds.ligo-wa.caltech.edu
martel run
reading data at start_time:  1416675755
reading data at start_time:  1416676330
reading data at start_time:  1416676692
reading data at start_time:  1416677299
reading data at start_time:  1416677800
reading data at start_time:  1416678168
reading data at start_time:  1416678360
reading data at start_time:  1416679388
reading data at start_time:  1416679723
Ratios: -0.46161620922202573 -0.46631546727413287
writing nds2 data to files
finishing writing
Background Values:
bg1 =        9.175134; Background of TX when WS is at TX
bg2 =        5.161980; Background of WS when WS is at TX
bg3 =        9.165405; Background of TX when WS is at RX
bg4 =        5.151518; Background of WS when WS is at RX
bg5 =        9.191307; Background of TX
bg6 =        0.664785; Background of RX

The uncertainty reported below are Relative Standard Deviation in percent

Intermediate Ratios
RatioWS_TX_it      = -0.461616;
RatioWS_TX_ot      = -0.466315;
RatioWS_TX_ir      = -0.456051;
RatioWS_TX_or      = -0.461524;
RatioWS_TX_it_unc  = 0.086881;
RatioWS_TX_ot_unc  = 0.091151;
RatioWS_TX_ir_unc  = 0.097094;
RatioWS_TX_or_unc  = 0.089816;
Optical Efficiency
OE_Inner_beam                      = 0.988013;
OE_Outer_beam                      = 0.990086;
Weighted_Optical_Efficiency        = 0.989049;

OE_Inner_beam_unc                  = 0.060350;
OE_Outer_beam_unc                  = 0.060428;
Weighted_Optical_Efficiency_unc    = 0.085403;

Martel Voltage fit:
Gradient      = 1636.718975;
Intercept     = 0.130679;

 Power Imbalance = 0.989923;

Endstation Power sensors to WS ratios::
Ratio_WS_TX                        = -1.077666;
Ratio_WS_RX                        = -1.392000;

Ratio_WS_TX_unc                    = 0.054228;
Ratio_WS_RX_unc                    = 0.043548;

=============================================================
============= Values for Force Coefficients =================
=============================================================

Key Pcal Values :
GS           =      -5.135100; Gold Standard Value in (V/W)             
WS           =      -4.711436; Working Standard Value             

costheta     =      0.988362; Angle of incidence
c            =      299792458.000000; Speed of Light
             
End Station Values :
TXWS         =        -1.077666; Tx to WS Rel responsivity (V/V)
sigma_TXWS   =        0.000584; Uncertainity of Tx to WS Rel responsivity (V/V)
RXWS         =        -1.392000; Rx to WS Rel responsivity (V/V)
sigma_RXWS   =        0.000606; Uncertainity of Rx to WS Rel responsivity (V/V)

e            =        0.989049; Optical Efficiency
sigma_e      =        0.000845; Uncertainity in Optical Efficiency

Martel Voltage fit :
Martel_gradient         =        1636.718975; Martel to output channel (C/V)
Martel_intercept   =        0.130679; Intercept of fit of     Martel to output (C/V)

Power Loss Apportion :
beta          =        0.998895; Ratio between input and output (Beta)  
E_T          =        0.993960; TX Optical efficiency
sigma_E_T          =        0.000424; Uncertainity in TX Optical efficiency
E_R          =        0.995060; RX Optical Efficiency
sigma_E_R          =        0.000425; Uncertainity in RX Optical efficiency

Force Coefficients :
FC_TxPD          =        7.886467e-13; TxPD Force Coefficient
FC_RxPD          =        6.173183e-13; RxPD Force Coefficient
sigma_FC_TxPD          =        5.464959e-16; TxPD Force Coefficient
sigma_FC_RxPD          =        3.784130e-16; RxPD Force Coefficient
data written to ../../measurements/LHO_EndX/tD20241126/

Beam Spot
T1500062 procedure measurement and log
Martel
WS @ TX
WS @ RX
WS @ RX Both_BEAMS
LHO EndX PD report
Git Link: https://git.ligo.org/Calibration/pcal/-/tree/master/O4/ES/measurements/LHO_EndX/tD20241126?ref_type=heads

Lab measurements:
NOTES:
PS4 PS5 measurement used for the above measurement were made on 2024-09-23.
The Measurements done in the PCAL LAB today 2024-11-26 were significantly different from the last set of measurements. Due to a drop in the voltage reported in the following plots. 
https://git.ligo.org/Calibration/pcal/-/tree/master/O4/lab/measurements/t20241126_144208_PS4_PS5_FB?ref_type=heads
https://git.ligo.org/Calibration/pcal/-/tree/master/O4/lab/measurements/t20241126_160713_PS4_PS5_BF?ref_type=heads
And I will need review these further before re-running the ES data with these newest measurements.

This maybe due to some changes in the lab. More vetting time is needed.

TITLE: 11/27 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Busy but easy maintenance day followed by a fully automatic, albeit longer than usual, lock acquisition. H1 has been observing for almost 3 hours now.

• 15:40 - Taking ISC_LOCK to 'IDLE' and SEI_ENV to 'MAINTENANCE'
• 19:31 - Maintenance activities finished, starting initial alignment
• 19:51 - IA finished, starting lock acquisition
  • 20:35 - Lockloss immediately after entering LOWNOISE_ESD_ETMX (so really a TRANSITION_FROM_ETMX lockloss)
  • BS needed realigning to lock DRMI on next attempt, fully auto after
• 21:43 - Observing
  • Accepted SQZ ADF phase difference, attached (tagging SQZ)
  • Engaged Rahul's new violin damping settings from alog81465; these are working well

LOG:

TITLE: 11/27 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 7mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.31 μm/s
QUICK SUMMARY:

• 2ndary microseism is still decreasing, wind is low
• We've been locked for 2.5 hours
• Violins look to be damping well
• The range has been slightly dcreasing, low frequency SQZing doesn't look the best on NUC33's DTT

Closes FAMIS28381

The in-lock charge measurements did not run this week due to the IFO losing lock from an Earthquake.

FAMIS 27803 (logging for TJ who actually did this check)

CO2X

• Before: 29.1
• After: 30.0
• Added 300mL

CO2Y

• Before: 9.2
• After: 9.8
• Added 250mL

There was no water in the leak cup. Spreadsheet in T2200289 has been updated.

Until we figure out these laser glitches, I've increased all of the timers in H1_MANGER and IFO_NOTIFY by 50%. This will hopefully help avoid the late night notifications that resulted in no actual interventions.

I added a laser_fudge = 1.5 to both nodes, and then multipled the defined timers in H1_MANAGER lines 149-152  and IFO_NOTIFY lines 30-35.