There is an oplev chassis in SUS-R1 that isn't used for anything anymore. I powered it off and it will be removed soon.

TITLE: 04/15 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 18mph Gusts, 10mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.24 μm/s
QUICK SUMMARY:

Verbals Ops Remider to sweep the LVEA before relocking. Something tells me we are gonna have a long Tuesday maintenance today and may not get around to the LVEA sweep today. :)

Updates on the Upgrades the Following:
Install an ISI in HAM 1.
SPI in PSL - add ALS pickoff mirror - Update, The PSL team had some HVAC issues  stemming from the poweroutage and were delayed.
VAC - HAM1 Top flange Gauge work table side - GM -- Travis has his hands on the new one and wants to install it..... but there is a flying ISI currently in the LVEA.
 

Norco arrived at exactly 15:00 UTC and drove to the CP2 N2 tank on the +X side of the corner station.

16:00 UTC Test T569591

Second Norco truck arrived 1700 UTC heading Down Y-ARM to Mid Y CP3

18:17 UTC PSL team makes it into the PSL room, after an hour

1 ton taken to dump to offload.

18:45 UTC 2nd Norco truck leaves.

Edgard, Oli

As a continuation from yesterday's work on getting the new noise estimators up and running for PR3 and SR3, we've copied over the filters used in the normal M1 damping for PR3 and SR3, H1:SUS-{PR3,SR3}_M1_DAMP_{P,Y}, for Pitch and Yaw over to new filter banks: H1:SUS-{PR3,SR3}_M1_{PIT,YAW}_DAMP_OSEM and H1:SUS-{PR3,SR3}_M1_{PIT,YAW}_DAMP_EST. These filter banks are found in the Pitch Estim and Yaw Estim screens under OSEM Damper and Estim Damper. The filters were copied over with a script that made sure that it was copying the filters that corresponded to the correct suspension and DOF (some of the filters differ between the suspensions as well as between DOF on the same suspension)..

The filters have all been loaded in but are currently off. The gains on these filter banks are currently set to 0.

I am attaching the script that I used to copy over these filters.

J. Kissel
ECR E2400083
IIET 30642
WP 12453

We're getting started on installing the PSL Pick-off path for the future SPI, and we want to record the values of the ALS/SQZ fiber distribution path before any work gets started -- and also see how these PD's values depend on the PSL environment. These PDs are described thoroughly in LHO:83013, but in short, there's a monitor PD internal to the PSL, on the table, and a down stream fiber-coupled monitor PD inside the ALS/SQZ fiber distribution box. 

Note, because ISCT1 has been moved out of the way for the ISI HAM1 install, the ALS COMM 2f SHG power monitor PD is unexpected to be dead, reading zero.

The good news: after the 2025-04-01 corner station vent and 2025-04-06 Power outage (LHO:83753), both ALS/SQZ path PDs report the same power as the did in Feb 2025 -- even though the PMC transmitted power is a few Watts less: 
                                            Feb 24 2025           Today (Lights OFF)      Today (Lights ON)
H1:PSL-PWR_PMC_TRANS_OUTPUT       [W]       105.0                 104.6                   104.6
H1:ALS-C_FIBR_EXTERNAL_DC_POWER   [mW]       44.6                 45.15                    45.55
H1:ALS-C_FIBR_INTERNAL_DC_POWER   [mW]       30.2                 29.8                     31.9

In LHO:83013, I reported the *log* of the power for the ALS path PDs rather than the absolute milliwats. Here, I quote both dates in absolute power [mW] for the record.

Watching the long term trend of the PD internal to the ALS/SQZ fiber box, the power swings regularly by ~2 mW. The current max is ~31.5 mW, and min is 29.5 mW.

During this morning's data, PSL environmental controls were on the fritz. My guess is that the optical fiber that feeds the ALS/SQZ internal monitor PD is quite sensitive to temperature, as you can see the INTERNAL power smoothly swing up and down. 

The free-space, on table EXTERNAL PD makes sharp 0.3 [mW] jumps when the lights are turned on and OFF, but otherwise no sensitivity to temperature. 

Finally, everything moves slightly with the PMC transmitted power, and the slightly smaller, seemingly random 0.2 [W] blips in PMC transmitted power are a result of Jason / Ryan going in and out of the main PSL room to try to assess with the environmental controls and turning on/off the lights.

Upsettingly interesting!

So, here should be our goal powers for on-table EXTERNAL PD and fiber-coupled INTERNAL PD should be somewhere around 
    Environmental Controls and Lights OFF
        EXTERNAL / ON TABLE / Free-space PD        45.2 +/- 0.1 [mW]
        INTERNAL / IN RACK / Fiber-Coupled PD      31.2 +/- 0.2 [mW]

    Environmental Controls and Lights ON
        EXTERNAL / ON TABLE / Free-space PD        45.5 +/- 0.1 [mW]
        INTERNAL / IN RACK / Fiber-Coupled PD      30.6 +/- 1.0 [mW]

Morning dry air skid checks, water pump, kobelco, drying towers all nominal.

Dew point measurement at HAM1 , approx. -42C

Tue Apr 15 10:07:33 2025 INFO: Fill completed in 7min 29secs

Edgard, Oli, Brian.

We added a folder with a script that calculates the noise budget for the OSEM estimator for an HLTS.

The folder lives in: sus/trunk/HLTS/Common/FilterDesign/Estimator/.  

The script inside is called (at least for now) PR3_noise_budget.m, and it uses the simulink diagram in the same folder to run. The diagram doubles as a diagram for the estimator scheme itself, so it can be useful to look at.

We will post more commissioning scripts in this folder later in the week.

Travis has asked for a temporary bypass on the GV7 cell phone alarms while this gate valve is soft closed

Bypass will expire:
Tue Apr 15 01:43:34 PM PDT 2025
For channel(s):
    H0:VAC-LX_GV7_ZSM179A_VALVE_ANIM
 

TITLE: 04/15 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 3mph Gusts, 0mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.26 μm/s
QUICK SUMMARY:

Beautiful day out!  Perfect conditions to Lock H1! But instead the plan is to do the Following:
Install an ISI in HAM 1.
SPI in PSL - add ALS pickoff mirror
VAC - HAM1 Top flange Gauge work table side - GM
PSL/FIL - Moving picomotor driver, pull cables
HAM1 ISC prep - check all removed cables for loose screws, continued
HAM1 ISC prep - Inspect Optics and beam dumps, FC if needed, continued
VAC - Start Feedthru Swap, need Betsy for some cables, continued, mostly done except 1-2 small ones

Hey also this thing is still not reporting back a number when checking the Dust mons.
H1:PEM-CS_DUST_LAB2 Error: data set contains 'not-a-number' (NaN) entries

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

Today's activities:

• Feedthru installation on HAM1 was completed.  An electrical issue with one of the 25-pin feedthrus on the D1 5-way cross and/or in-vac cable means this port will be revisited after ISI installation.  Electrical testing is ongoing for the new feedthrus/cables.
• BSC8 annulus system is being pumped by aux. cart.  
• CP1 RGA is being pumped down for initial commissioning.
• Flange protection was added to the HAM1 top 16.5" port.

TITLE: 04/14 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: HAM1 work is chugging along, the ISI installation structure/fixtures is set up and ready.
LOG:

17:15 UTC a 5.5 from southern California came through

For the trello tasks today:

• Guardian Work, DAQ restart - TJ DONE alog83895
• HAM1 - Install ISI tooling DONE
• HAM1 ISC prep - check all removed cables for loose screws, continued
• HAM1 ISC prep - Inspect Optics and beam dumps, FC if needed, continued alog83898
• HAM1 ISC prep - Recheck all RMs with FRS ticket issues, continued DONE
• VAC - Start Feedthru Swap, need Betsy for some cables, continued, mostly done except 1-2 small ones continued
• PSL/FIL - Moving picomotor driver, pull cables Not done
• EX and EY - ALS work beam profiling DONE alog83901

Randy, Corey, Mitch, Richard, Jim

ISI install fixture was installed today. Like LLO, it was kind of tricky, we installed the back (-Y) stand, Randy drove the first I-beam through and we attached to the -X side of the install fixture. The +Y side of this I-beam was then hung from the crane while we grabbed the second I-beam and attached to the +X side of the -Y stand. The outer +Y stand was then brought in to support the I-beams and we took two of the outrigger legs off the middle stand and used the crane to place it as close as we could to the middle of the I-beams. The -X outrigger was re-attached and we spent some time squaring the whole assembly up to the chamber before attaching the I-beams to the middle stand. We tried to seal the chamber up as good as we can, but we don't really have covers for this step. At this point, the fixture is pretty close to where it needs to be, but we need to set the height and pull the +Y stand out of the way. Should be ready to bring the ISI into the LVea and get started with the ISI install first thing tomorrow.

J. Kissel, B. Lantz, E. Bonilla, D. Barker
ECR E2400405 
IIET 32526
WP 12459

Using a linear combination of LHO:83724, the google slides in G2402303, and talking to Brian/Edgard who arrived for their week long visit today -- we installed the OSEM estimator infrastructure today on PR3 *and* SR3. 

We've only filled in enough infrastructure to ensure that it's function is entirely OFF.
Hopefully we'll get further this week.

The new channels have been initialized in the safe.snap for PR3 and SR3. 
    /opt/rtcds/userapps/release/sus/h1/burtfiles/
        h1suspr3_down.snap
        h1sussr3_safe.snap

We made edits to Brian / Edgard's work on common library parts,
    /opt/rtcds/userapps/release/sus/common/models
        HLTS_MASTER_W_EST.mdl
        SIXOSEM_T_STAGE_MASTER_W_EST.mdl
medm screens
    /opt/rtcds/userapps/release/sus/common/medm/hxts
        SUS_CUST_HLTS_OVERVIEW_W_EST.adl
    /opt/rtcds/userapps/release/sus/common/medm/estim/
        ESTIMATOR_OVERVIEW.adl
        CONTROL_6.adl
(see attached notes for details).

And then I made edits to
    /opt/rtcds/userapps/release/isi/h1/models/
        h1isiham2.mdl
        h1isiham5.mdl
to add PCIE Dolphin IPC senders to send out the calibrated ISI HAM ST1 GS13s that are pre-projected into the PR3 and SR3 suspension point euler basis, and then modified
    /opt/rtcds/userapps/release/sus/h1/models/
        h1suspr3.mdl
        h1sussr3.mdl
top level models to receive those IPC, and pipe them in to top of the new main libary part, the HLTS_MASTER_W_EST.mdl

Finally, after Dave installed the model changes and restarted the ISIs and HLTSs, we edited the sitemap
    /opt/rtcds/userapps/release/cds/h1/medm/
        SITEMAP.adl
 to use the HLTS_OVERVIEW_W_EST.adl.

Everything file I mention above has been committed to its respective location in the svn.
Screenshots of stuff will come in the comments.

I double checked the positions of PR3 and SR3 before the DAQ restart that's planned for today, SR3 seems to have done a bit of drifting from the LVEA zone4 temperature increasing by ~ 2 degrees. The T cursers denote the power outage. PR3s YAW oplev looks a little different post power outage but its' top mass osems don't really seem to have moved.

Elenna, Matt, Camilla. Continuing ISC component inspection and prep for re-installation from 83858. 

Elenna, Matt and I continued to first contact the optics in pans 1 and 2:  M7, M11, M12 (new 90/10 BS), M13, M15 (New 50/50 BS), M16, M17, M18. After again inspecting some of those we cleaned yesterday, we decided to re-clean some. Some needed multiple first contacting, they aren't all perfect (there is a 1" long incredibly hard to see line on M15 and a mark in the center of M18 photo that I will ask a second option on), but otherwise we are calling these two pans of optics ready for re-installation. 

For M15, I installed the picomotors that I removed from the right handed mount into a left handed siskiyou mount. I installed the manually adjustable actuators removed from the left handed mount into the right handed mount, this will be stored. Notes on how to do this are attached.

Still to be done: decide if M15 and M18 are okay or need swapping, clean optics in pan 3; inspect periscope mirrors; swap out any glass beamdumps we can.