J. Kissel

Today Dave installed all the simulink front-end code infrastructure that Oli and I built for PM1 (see LHO:83214), Oli created a generic MEDM macro for PM1 and attached a call to that file with the generic HTTS MEDM screen to the sitemap yesteday. 

That meant I had everything in place for me to completely fill out the PM1 infrastructure:
- Populated OSEM2EUL, SENSALIGN, and EUL2OSEM matrices with generic HTTS values
- Populated OSEMINF filter banks with standard OSEM calibration filters and turned them ON with a gain of 1.0 for now
- Populated the DAMP filter with standard (recently improved) HTTS damping filters
- Populated the COILOUTF filter bank with HAM-A coil driver frequency response compensation, and turned the filters on with magnet polarity compensating gains of UL LL UR LR = +1, -1, -1, +1'
- Populated and turned on the RMS filtering to support the watchdog trigger signals, and set the threshold to 150 [urad_RMS] as is the case for other HTTS
- Turned on the on-diagonal elements of the DRIVEALIGN matrix
- Set the calibration gain of the OPTICALIGN alignment offsets to 1.0, which is not the right number, but standard for HTTS. Turn the offset ON.

Then monitored and accepted all the settings in the h1sushtts_safe.snap, expect the OPTICALIGN offsets.
The committed the safe.snap and filter file to the userapps repo.

All we need now is PM1 itself!

Annual groundwater sampling took place today. The well pump near EY ran for 20 minutes from 8:46a-9:06a PT. 

T. Guidry

New models have been installed for h1asc, h1suspr3, h1iopsush2b, h1susim, h1sushtts and h1susauxh2. The DAQ was restarted for these model changes (no EDC) between 08:22 and 08:30.

h1seih16 was fenced from Dolphin and powered down for H16 rack power work, fixing IO Chassis Adnaco backplane and installing ISI-HAM1 ADC/BIO cards.

J. Kissel
ECR E1700228
WP 12370

I've executed the PR3 Optical Lever QPD AA Cable move from SUS-C4 U11 D9 Port 7 to SUS-C4 U32 D9 Port 8 described in more detail a few days ago (LHO:83168) in order to make room for the incoming PM1 (per ).

See LHO:83168 for "before" pictures; I attach "after" pictures here:
    - 2025-03-11_SUS-C4_PR3OplevMove_U11_AAChassis_After_1 shows that D9 port 7 and 8 of U11 AA chassis are now vacant, 
    - 2025-03-11_SUS-C4_PR3OplevMove_U11_AAChassis_After_2.jpg shows that this AA chassis is serial number S1202339.
    - 2025-03-11_SUS-C4_PR3OplevMove_U32_AAChassis_After_1.jpg shows the big-picture scene around U32 AA chassis,
    - 2025-03-11_SUS-C4_PR3OplevMove_U32_AAChassis_After_2.jpg shows the cable, "H1:OP LEV_PR3_AA" or "H1:SUS-HAM2_88" specifically, connected into to U32 AA chassis D9 port 8, the last "IN29-31," spigot of this AA chassis that supports sush2a's ADC1.
    -  2025-03-11_SUS-C4_PR3OplevMove_U32_AAChassis_After_3.jpg shows that this U32 AA chassis is serial number S1202340

1425715885

This lock loss from 15 hours ago had a rather large ETMX glitch that caused the lock loss. Upon returning to low noise, the violins were rung up. There was no earthquake during that time, but there was a lock loss from Resonance [410] during reacquisition. The violin modes that were rung up, are still damping  ~15 hours and two lock reacquisitions later. I'm not sure if the lock loss itself caused them to ring up, or the fall from the Resonance state.

TITLE: 03/11 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: SEISMON_ALERT
    Wind: 4mph Gusts, 2mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.26 μm/s
QUICK SUMMARY: Locked for 3 hours, two relocks overnight. Violins are elevated. The range has been slowly decreasing from the start of the lock. No alarms, calm environment. PEM magnetic injections are running at the moment to start off this maintenance day.

Workstations were updated and rebooted.  This was an OS packages update.  Conda packages were not updated.

TITLE: 03/11 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 5mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.26 μm/s
SHIFT SUMMARY:
I started my shift with H! locked and observing.
H1 dropped from observing, for a few minutes while the SQZ_man cycled throught its locking states. It returned to obsering automatically. alog 83281

Lockloss caused by the ETMX glitch, but it wasn't caught by the lockloss tool. alog 83282

Relocked without an Initial_Alignment.
H1 has been locked for 3.5 hours.

LOG:
no log

STATE of H1: Lock Acquisition
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 10mph Gusts, 6mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.25 μm/s
QUICK SUMMARY:

Lockloss at 00:14 UTC

Unsure of what happened here. No sign of ground motion, wind, Pis, or SUS saturations.
There is a small ETMX Glitch on the lockloss page, but it is below the threshhold to trigger an ETMX glitch flag.

H1 Returned to Observing at 01:35 UTC

J. Freed

This is the summary page for the investigations at LHO into the First Stage BOSEM damping contributions to DARM.  PR3 shows the strongest contribution to DARM by about a factor of 10 below DARM between 8Hz - 25Hz. ETMX and ETMY shows cotributions to DARM by a factor of 20 between 10Hz - 14Hz below DARM. SR2, SRM, and PR2 shows strong contribution between 7Hz - 12Hz by factors between 4 to 10 below DARM. Where as BS, ITMX, ITMY shows little to no contributions.

This is a summary of the work done previously for BS, ITMX, ITMY, PR2, PR3, PRM, SR2, SR3, SRM, ETMX, and ETMY. Starting with PR3, data was take with excitation gains of 300 ontop of the 600 gains to help check against any noise gained independant of excitation during data collection. This summary page only uses the 600 gains however as extra data was not collected for all suspentions.

The plots and code are located at /ligo/home/joshua.freed/bosem/sum/scripts. I used the code located under /ligo/home/joshua.freed/bosem/sum/scripts/osem_budgeting.py to produce the sum of all contributions as well as the individual plots.

Below are the graphs showing the estimated contributions from each bosem on each suspension:

TITLE: 03/10 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 13mph Gusts, 7mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.27 μm/s
QUICK SUMMARY:

H1 is currently Locked for 1 Hour and 20 minutes.
All systems seem to be opperating well.
I expect to be Observing until Maintenance tomorrow morning.

TITLE: 03/10 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Tony
SHIFT SUMMARY:

Maybe 2hrs of Observing today, with locking at the start, getting to Observing a few minutes, dropping out for Commissioning, observing for a few minutes, then a lockloss due to a power supply dying at EY and then getting back to observing!

LOG:

• 1518 OBSERVING (recovering from lockloss at 1332)
• 1531 Out of observing for COMMISSIONING (sheila.camilla.matt)
• 1549 drilling holes at Staging for elec to new storage bldg (ken)
• 1553 Tyler phoned about LSB roofer noise for removing old roof
  • Also remember to LOCK the 
• 1555-1641 MX clean & checks (kim)
• 1722 ISS Array work in optics lab (myank)
  • 1804 siva joining
  • 1915 keita joining
  • 1920 Matt joining 
• 1735 Reports of seeing a smoke plume NW of LHO site (Looking down X-arm, it is to the west of Vit Plant as looking via camera---not sure if it was on the Hanford site or if it is beyond the Columbia River).  UPDATE:  45min later smoke plume gone.
• 1850 Back to Observing
• 1902 ETMy glitch on Verbal AND H1 LOCKLOSS marking DOWN TIME for electrical issue
  • 1902 EY ISI Watchdogs trip
  • CDS Overview is GREEN
  • RyanS noticed DIAG SDF saying there were EY Ring Heater issues & Camilla confirming EY Ring Heaters have issue.
  • 1915 Fil heading down to EY
    • 1930 Powering down Power Supplies for TCS & ISC
  • 1924 Sensor Correction turned OFF since people may enter EY VEA(jim) 
• 2000-2058 working in EY valve room (gerardo)
• 2045 Got word of everything being FIXED at EY, so....
• 2050-2113 Initial Alignment started (with Y-Arm being fine btw)
  • Started locking, but Y-arm kept losing lock (as seen for the last few weeks.
  • 2127Went through a Manual Alignment of Green Arms
• 2230 Back to OBSERVING!
• 2220-2310 Testing WFS POP_X in optics lab (daniel)

Attached are two examples where it seems that ALS losses lock after the ESD linearization hits its saturating limit, there are several more examples like this. 

With the linearization on, we measured the transfer function from drivealign L out to LL master out to be -2.3.  Taking into account the gain of 0.25 in the eul2esd matrix, we would need to add a gain of -9.2 in the drivealign matrix to try locking ALS without the linearization. 

Jeff, Jim, Oli
ECR E1700228

Previously, the h1isiham1 simulink model terminated the outputs coming out of the GS13. Now that we'll be installing the ISI, we will need those, so we've taken those outputs, converted them to Euler DOFs, and then have Length being sent out over to the HTTS(after-h1isiham1). In the h1sushtts model, we then updated the Length input coming over PCIe from h1isiham1 (currently called TTL4CFF_2_PM1 - eventually this and the TTL4C_2_RMs will be all changed over to be from ISIs). Last time (83196) we had set 0s to feed into the L, P, and Y components of TTL4C_2_PM1, but now L is reading in from h1isiham1 PM1 Length (after-h1sushtts). For now, we are still going to be reading from the TTL4CFFs for RM1 and RM2 (the same as they have been).

Both h1isiham1 and h1sushtts have successfully compiled and have been svn'd at revisions:

h1sushtts.mdl     30950
h1isiham1.mdl     30951

Right after Commissioning, H1 had a lockloss and several systems showed odd behavior (EY ISI WD trips, CPS St1 have huge signals, EY Ring Heaters show bad/dead state...).

Fil now at EY and mentioned the TCS and ISC Power Supplies were down and so he needed to restart them.

FRS33539 ticket started. 

Sheila, Mayank, Camilla

The SQZ ang servo has been off since Feb 18th 82891. Today it was turned back on in sqzparams.py and with SQZ_ANG_ADJUST nominal state is now ADJUST_SQZ_ANG_ADF. We expect this to work better than in 82891 as we adjusted H1:SQZ-ADF_VCXO_PLL_PHASE to 25deg so that the AFD H1:SQZ-ADF_OMC_TRANS_SQZ_ANG error signal is in a linear range where our best SQZ is. This should improve the squeezing and keep it more stable.

I assembled the 45MHz WFS unit in the optics lab. Assembly drawing: D1102002.

BOM:

• 1x Pre-assembled WFS body (D1102004 s/n016 Main Body, sealed & scribed as "S1300637" according to Corey's email)
• 1x Alumina spacer (D1102007)
• 1x Baseplate (D1102003)
• 1x Q3000 QPD
• 1x QPD hood (D1102006)
• 2x SHCS 1/4-20 X .75" 18-8 VENTED for the baseplate
• 2x 1/4" PEEK washer (D1102010) for the baseplate
• 4x SHCS 4-40 X 3/16" 18-8 Vented for the QPD hood (spec is BSHCS but SHCS works fine)

I confirmed that the baseplate and the WFS  body are electrically isolated from each other.

There were many black spots on the WFS body (2nd pic) as well as the aluminum foil used for wrapping (3rd pic). It seems that this is a result of rubbing of aluminum against aluminum. I cannot wipe it off but this should be aluminum powder and not some organic material.

QPD orientation is such that the tab on the can is at 1:30 o'clock position seen from the  front (4th pic). You cannot tell it from the picture but there's a hole punched to the side of the can.

Clean SMP - dirty SMA cables are in a bag inside the other clean room in the optics lab. DB25 interface cable is being made (or was made?) by Fil.