HAM1 - JM3 (SUS Tip Tilt) BOSEM flags re-centered

SUS JM3 (Tip Tilt) update - This afternoon I went into the HAM1 chamber (when no one was working with the beam) and re-touched the BOSEM flags to center it with the LED/PD for half light. I will re-take TF measurements later on.

Cables staged in LVEA

Cables have been staged in front of the TCSX table enclosure on the floor. As this is a trip hazard, the area is tapped off with caution tape. Cables will be removed/pulled tomorrow.

HAM1: PM1 up and working/damping (health checks ongoing)

Turns out that my PM1 investigation (drop in bosem counts by 20%, as reported in 89017) was totally unnecessary and this was due to the coil driver swap in Dec 2025 (LHO alog 88998)  and I had totally forgotten about it.  

Long story short - this afternoon I went into HAM1 chamber and re-attached the BOSEMs, connected the cables, centered the flags and re-attached the beam dump behind it. I re-took the open light counts, applied the offsets and the gain for PM1 (see screenshot attached). I have accepted the new settings in the SDF (safe).

Latest OLC for PM1 are as follows,

UL	20800
LL	23100
UR	19100
LR	23200

Healths checks on PM1 is still ongoing (chamber side measurements shows peaks are in the right place, magnitude is off so we are looking into the new Coil Driver and if everything is consistent or not digitally), will post plots as soon I am able to process them.

 

HAM7 Closeout Photos

Squeezed in a quick photoshoot of HAM7 (right after ISI-unlocking/measurements by Jim + purge air being turned up and before Door Team sealed it up).  HAM7 was open roughly from 11:16am-11:48amPDT for photos.  Since there was only one door off, lighting wasn't great and limited to shots from the -X side of HAM7.  Used Canon DSLR camera followed by iPhone shots; snapped a handful of macro lens shots for fun.  

Photo Album (109photos) uploaded to Google folder HERE.

HAM1: SUSPM1 investigation - OLC of all four BOSEMs dropped by 20%

Fil, Rahul

Out of chamber investigation

This morning Fil and I unplugged Tip Tilt PM1 cable going to its Satamp and connected it to Tip Tilt JM3 and found no change in its Bosem counts (was still low for UL and UR, like before). We connected JM3 to PM1's electronics chain and it was looking good. We also checked the long grey cable and found it to be healthy. Thus we came to this conclusion that in-air electronics chain is healthy for PM1.

In-chamber investigation

During lunch time when the chamber was empty, I took the OLC of all four BOSEMs for PM1 and found their values to be lower by 20% (last taken in April 2025).

Bosem	OLC (April 2025)	OLC (Feb 2026)
UL	264040	20800
LL	28894	23100
UR	24529	19100
LR	29276	23200

This tells me that either the in-vacuum cable is not working properly or all four Bosems are malfunctioning. I need more in-chamber time to further investigate this issue.

Monday Ops Day of Mysteries

TITLE: 02/03 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:
LVEA was Bifircated via a Laser Hazard areas around HAM 1& 2, while the rest of the LVEA is LASER SAFE unless at height. See M2600004 for details.

PM1 was mysteriously dancing & Saturating too much for Rahul's transfer function measurement all day long. While he was troubleshooting. Update!!! Rahul dragged the EE guys out and found a dead Coil Driver! Mystery solved!

JAC work continued all day starting with mode matching in HAM1, and starting a JM2 swap. JAC table now has all the mounts and Cables but no optics yet. 

HAM7 & ITMY ISI Watchdogs tripped at 23:33 UTC due to mysterious high frequency ground noise that was louder at HAM7 than ITMY.  Jim & Betsy went to go look for fallen wrenches or other watchdog tripping phenomena..... No explanation was ever found. 

OPS info: 
New conda ENV doesn't run watchdog untripping scripts unless you run Conda Kill first.  Tagging CDS. 

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
22:49	SAF	LVEA IS LASER SAFE	LVEA	NO*	LVEA IS LASER SAFE *BIFURCATED HAM1/2 bring ur LASER GOGGLES	16:49
15:35	FAC	Nellie	Optics Lab	n	Tecnical cleaning	15:55
15:37	JAK	Betsy	LVEA	y	checking status of LVEA	16:37
15:44	FAC	Kim	LVEA	y	technical cleaning	17:55
16:50	SAFETY	Travis	LVEA	yes	Setting up barriers for Bifurcated laser hazard  conditions.	17:26
16:56	Cheta	Camilla, Matt, Sophie	CHETA  lab	Yes	Updating Camilla on CHETA lab status	18:55
17:06	FAC	Nellie	LVEA	y	Technical Cleaning	17:55
17:16	Cheta	Ryan	CHETA Lab	y	Getting Optics	17:23
17:21	PSL	Jason	LVEA	yes	Energizing the rotation stage to 1 W.	17:30
17:22	Safety	Jenny D	LVEA	y	Setting up barriers for Bifurcated Laser zones.	17:26
17:26	SUS	Rahul	Remote	n	Taking TF meas. of PM1	18:26
17:28	VAC	Travis	LVEA	y	Reducing purge air in HAM1	17:30
17:35	SPI	Jeff	Optics lab	Yes	Working on SPI in the Optics Lab.	20:34
17:57	CHETA	Ryan S	CHETA LAB	y	Getting optics parts	18:12
18:06	FAC	Kim	Mid X	n	technical cleaning	18:54
18:09	SEI	Jim	LVEA HAM7	n	Balancing HAM7 ISI	19:19
18:15	SEI	Mitchel	LVEA HAM78	N	Balancing HAM7	19:19
18:28	VAC	Travis	LVEA HAM1	y	Turning up purge air	18:33
18:30	SUS	Rahul	LVEA & Optics lab	y	getting & cleaning parts	18:55
18:31	Laser Trans	Oli	LVEA	Y	Laser transitioning to Strange Laser Bifurcated State	18:41
18:34	SQZ	Sheila & Karmeng	SQZr Racks	n	Checking on SQZr racks	21:31
18:45	JAC	Masayuki & Jason	LVEA HAM1	YES	JAC Mode matching	20:19
18:48	JAC	Ryan S	LVEA HAM1	YES	Taking picures of JAC & pluggin in the JAC Table.	19:06
18:55	FAC	Kim	HAM SHAQ	N	Technical Cleaning	20:25
19:12	TCS	Matt	OptLab	y(local)	Putting stuff away	19:18
19:45	VAC	Gerado	LVEA	yes/no	Anulus pump work	20:24
19:47	ISC	Mitchel	LVEA West bay	n	Getting parts.	20:07
20:09	JAC	Jennie	LVEA HAM1	YES	Checking on Jason and Masayuki	20:19
20:49	LASER SAFETY	Travis	LVEA HAM1	YES	Adjusting the LASER Curtain.	21:03
20:55	FAC	Randy	LVEA	n	heading to the WEST Bay area for parts.	22:20
20:56	JAC	Betsy	Optics Lab	y	Checking for parts and progress.	22:56
21:01	SPI	Jeff & Jim	Optics lab	Yes	Working on SPI	23:01
21:11	EE	Marc	LVEA HAM1	yes	Working with the HAM1 crew	22:56
21:21	JAC	Ryan S	LVEA JAC Table	N	working on the JAC table	01:51
21:27	VAC	Travis	LVEA HAM1	yes	Adjusting the Purge air back down for a SUS measuremnent	22:29
21:28	SUS	Rahul	Remote.	N	JAC PM1  SUS TF Measurement	22:13
21:36	JAC	Jennie W	LVEA JACt & HAM1	n/Y	working with Ryan S on JAC table, & Waiting for HAM1 crew.	00:00
21:37	SUS	Rahul	LVEA HAM1	Y	Checking PM1 SUS  status	22:12
21:58	FAC	Mitchel	LVEA West bay	N	Checking inventory & Parts	22:35
22:05	JAC	Betsy	LVEA	N	Running parts	23:59
22:23	JAC	Masiuki & Jason	LVEA HAM1	Yes	Working on Mode matching with JAC	01:58
22:31	JAC	Keita	LVEA HAM1	Yes	Helping HAM1 crew	01:56
22:34	VAC	Travis	LVEA	HAM1	Turning up the Purg air in HAM1	22:43
23:00	JAC	Betsy	LVEA	yes	Running parts	23:30
23:39	VAC	Travis	HAM Shaq	N	Getting parts.	23:45
23:54	CHETA	Camilla	Optics Lab	N	Checking supplies.	00:00
00:06	SUS	Rahul	LVEA	yes	Power cycling Satilite boxes	00:10
00:06	SEI	Jim	LVEA	N	Walking through the LVEA looking for fallen wrenches & unwatched dogs	00:46
00:10	SEI	Betsy	LVEA	yes	Walking around looking Unwatched Dogs	00:30
00:18	SUS	Fil & Rahul	LVEA HAM1	yea	power cycling sat amps to troubleshoot SUS OSC rahul out early	00:57
00:28	EE	Marc	LVEA HAM1	yes	Giving Fill a hand	00:57

 

PM1 (HAM1) faulty Coil Driver replaced

Dave, Oli, Marc, Fil, Rahul

This morning I switched PM1 (Tip Tilt suspension) in HAM1 chamber from safe state to damped state and immediately the DAC output was saturating. I suspected purge air (which Travis turned it down twice during the day) and later Masayuki also covered PM1 with foil. However, nothing stopped the suspension from saturating.

Then Oli, Dave and I did a model restart and later I power cycled the Satamps for PM1 in the LVEA - nothing helped.

Next, Marc, Fil and I went to the LVEA (checked the satsamp, which was fine) and CER and found the Coil Drivers to be faulty.

New Coil driver - E2400048 s/n 22001180

Old Coil Driver - E2100430 s/n S1106046

SUS PM1 is now not saturating. I will perform the heath checks later on.

HAM7 OPO cable dressing (round 2) - Yaw shows no further improvement

Sheila, Jeff, Rahul

Yesterday afternoon we moved around two more cables on the OPO (see picture attached for reference). For the first cable (marked by circle) we lifted the cable connector from the OPO and attached it to the nearby pillar using a PEEK tie. For the second cable (marked by arrows in my picture) I provided more relief to it.

This morning I took transfer function measurements for Y dof (0.02Hz bw and 5 averages, with Yaw dof. un-damped and other dof. being damped during the measurement) - see screenshot attached below. I don't see any improvement (in frequencies splitting) - red trace is the latest measurement and blue is the previous one taken by Jeff two days ago.

HAM7 OPO health check investigation - took fresh pictures (in chamber) for comparison, looking for cable inteferances.

Jeff, Sheila, Rahul

Details about OPO health check issues (Yaw dof. - frequencies are off and unnecessary peak observed) is currently being analyzed - see Jeff's alog 88913.

This morning we discussed about possible cable interferences in OPO.

I went into the chamber and took fresh pictures of the OPO from several angles, focusing on cable routing, cable resting on the OPO etc - please find them attached below. I will compare them with the pictures posted in LHO alog 61643 (by Sheila in 2022) and look for possible culprits (a few of them already).

Moving cables could cause some misalignment, hence we will start doing so once Sheila gives us a green light.  

H1SUSOPOS TFs post-OPO Crystal Swap / Translation Stage Improve -- Something Quite Off

J. Kissel, R. Kumar, B. Weaver, S. Dywer

Context
After the SQZ team felt done with OPOS suspension the re-install of the OPO (with an upgraded translation stage) we're following up on
    - Ryan's first look of the suspension's health (LHO:88851) 
    - After restoring the OPOS to normal control system configuration (LHO:88872) 
    - After recentering the AOSEMs (LHO:88910)

Measurement
I gathered more standard health check TFs. In doing so, I spruced up the excitation frequency response and data gathering templates to ensure good coherence. I also ran the TFs with all the damping loops besides the excitation degree of freedom ON to reduce incoherent motion from cross-coupling. The refreshed templates are 
    /ligo/svncommon/SusSVN/sus/trunk/OPOS/H1/OPO/SAGM1/Data
        2026-01-26_2054UTC_H1SUSOPO_M1_WhiteNoise_L_0p02to50Hz.xml
        2026-01-26_2054UTC_H1SUSOPO_M1_WhiteNoise_P_0p02to50Hz.xml
        2026-01-26_2054UTC_H1SUSOPO_M1_WhiteNoise_R_0p02to50Hz.xml
        2026-01-26_2054UTC_H1SUSOPO_M1_WhiteNoise_T_0p02to50Hz.xml
        2026-01-26_2054UTC_H1SUSOPO_M1_WhiteNoise_V_0p02to50Hz.xml
        2026-01-26_2054UTC_H1SUSOPO_M1_WhiteNoise_Y_0p02to50Hz.xml


Results
Attached is comparison of 
    - the opos dynamical model (Equations of Motion matrices: ssmake_voposus.m rev 12322; parameter set: oposopt_h1susopo_fit rev 12322)
    - the most recent, best at-vacuum, measurement of L1's OPOS
    - the last, best, at-vacuum measurement of H1's OPO prior to moving from HAM6 to HAM7
    - the last, bext, at-vacuum measurement of H1's OPO after moving to HAM7 (with a payload almost identical to what's installed now)
    - yesterday's measurement described above.

Focusing on page 6 first, one can clearly see that YAW to YAW transfer function is wildly different, implying a significant change to the dynamics of the suspension.
There's more supporting (but less signficant) evidence in 
    - pages 1 and 2 which shows and increase in the primary L / T resonance from 1.25 Hz to a split 1.32 Hz / 1.39 Hz
    - pages 1 thru 6 (all diagonal elements of the TF matrix) and pages 7 thru 20 (most off-diagonal elements) all showing a huge (tho incoherent) resonance in yaw at 4.98 Hz that was not there before
    - Nominally an oversight in the design, the expected large V to Y coupling looks quite impeded.

Discussion
After conversing with Sheila about what might have changed, or what might be impacting the dynamics, she reviews the changes:
    - The OPO cavity assembly (D1500296) has only a few changes -- the translation stage within is new, and there are now thin remote-control cables coming out of the assembly that weren't present before.
    - Those new remote control cables have been bundled into a pre-existing bundle, potentially making the system stiffer. We guess that this is the likely culprit of our problems.
    - Further the re-placement of the OPO assembly on the OPOS was not precise. It's plausible that the physical location of the cavity is now *slightly* different position, *potentially* changing the balance and mass ratio of how much moving mass is in which translational DOF. Maybe the source of L / T resonance shifts, but I doubt it. 

Also, conversing with Betsy and Rahul about the state of cables they found while centering the OSEMs:
    - They see a collection of cables (OSEM and SQZ) on the "far" (+Y) H3/V3 side of the OPOS that are resting on the platform without a good, dressed, soft connection between the platform and where the cable stress is relieved on the base.

Conclusion

We need to address / free-up the dynamics of this suspension before closing up the chamber.

HAM7 work - OPO AOSEMs (H1, H2, H3) re-centered.

Karmeng, Betsy, Jeff, Rahul

Following the recommendation given in LHO alog 88872, yesterday (01/26/2026, Monday) we went into HAM7 chamber and re-centered the three horizontal AOSEMs (H1, H2 and H3) as best as we could. All three AOSEM counts (raw inmons) are now between 11-15k. 

Next, Jeff will re-take the transfer function measurements and confirm if OPO is healthy.

Also, Sheila et al will re-confirm if the beam is well aligned with other suspension in HAM7 chamber.

OPO is currently unlocked and suspended. 

IMC REFL DC With HAM1 In Air During JAC Install/Alignment Recovery; ISIs ISOLATED (Aligned) vs DAMPED (Floating) Positions and IMC SUS Alignments

J. Kissel, J. Driggers, J. Wright

While we recover the alignment into to the IMC using the amount of DC light on the IMC REFL PD (on IOT2L) (and eventually MC2 TRANS on HAM3) -- e.g. LHO:88869 -- there's been some confusion about the state of the HAM2 and HAM3 ISIs alignment, and whether that matters. 

Here, I compare 3 times:

    Date Time                       2025-12-19 00:15 UTC                     2026-01-24 01:28 UTC                      2026-01-26 17:26

    Description                     HAM1 in AIR Pre-JAC reference           Post-JAC install, Pre EOM Install        Post-JAC Install, Pre-EOM Install

    IMC State                       LOCKED                                  OFFLINE                                  OFFLINE
    IMC REFL Power [mW]               0.65                                  0.22                                     0.18
    IMC MC2 TRANS Power [mW]        307.0                                   0.4 (confidently dark noise)             0.4 (dark noise)

    MC1 P/Y                         +852.04 / -2229.74                      +874.30 / -2233.84                       +874.30 / -2233.84
    MC2 P/Y                         +582.28 /  -627.99                      +568.40 /  -628.20                       +568.40 /  -628.20
    MC3 P/Y                           +9.23 / -2433.51                        -1.07 / -2430.71                         -1.07 / -2430.71

    HPI HAM2/HAM3 Physical State    locked/locked                           locked/locked                            locked/locked
    HPI HAM2/HAM3 ISO Gain          disabled/enabled(?)                     disabled/enabled                         disabled/disabled
    ISI HAM2/HAM3 ISO State         ISOLATED/ISOLATED                       DAMPED/DAMPED                            ISOLATED/ISOLATED
    ISI Residuals (w.r.t. "they've been that way forever alignment position")
                                       HAM2       HAM3                         HAM2       HAM3                          HAM2       HAM3 
        X [um]                         0.00 /     0.00                         +8.9 /    -56.4                          0.00 /     0.00
        Y [um]                         0.00 /     0.00                         +4.8 /    +36.6                          0.00 /     0.00
        Z [um]                         0.00 /     0.00                         -6.6 /     -6.7                          0.00 /     0.00
        RX (Roll) [urad]               0.00 /     0.00                         +0.4 /     +1.2                          0.00 /     0.00
        RY (Pitch)[urad]               0.00 /     0.00                         +1.4 /      0.0                          0.00 /     0.00
        RZ (Yaw)  [urad]               0.00 /     0.00                         +5.2 /    -28.6                          0.00 /     0.00

In summary -- having the ISI tables DAMPED (Floating) vs. ISOLATED with HEPI physically locked does make a tens-of-micro level shift in alignment of the tables. 
This is evident by the amount the IMC SUS had to move (from 2025-12-19 to 2026-01-24) in order to start recovering even 0.2 [mW] on the IMC REFL DC PD.
On the scale 0.7 [mW], and without changing the SUS positions (from 2026-01-24 to 2026-01-26) it (HAM2 only, of course) makes the difference between 0.22 [mW] and 0.18 [mW] or (0.22-0.18)/0.22 = 20%-ish percent difference.
When checking / chasing in-air alignment of the beam projected into HAM2 with HAM1 optics, we should make sure that the ISIs are ISOLATED, if possible.

To bring the ISIs to ISOLATED, with HEPI Locked:
   - Set the HPI-HAM{2,3}_ISO_GAIN to 0.0 (disabling the HPI controls), and 
   - Requesting SEI_HAM{2,3} Guardians to ISOLATED (which brings the ISI to HIGH_ISOLATED)

Supporting SUS BS Electronics Moving into SUS-C1: Additional +/-18V DC Power Rail Installed, SUS-C2's Power Supply Feeds It

J. Kissel, F. Clara, M. Pirello
D2300167 Record of LHO DC Power Supply System
S1301897 VDC-C1 Rack S-number
S1301868 SUS-C1 Rack S-number
WP:12962

In support of last week's CER / Electronics / Rack changes to move the Beam Splitter electronics over from the susb123 / SUS-C5 & C6 system to become a part of the expanded susb2h34 / SUS-C1 & C2 system (LHO:88765) we needed more +/-18V DC power to support the incoming chassis into SUS-C1. 

We already knew in 2023 that SUS-C1's +/-18V power supplies in VDC-C1 U2 were already supporting a lot of current draw from the existing MC2, PR2, SR2 chassis in SUS-C1. However, the original 2023 plan (see page 10 of Part II of G2301306-v9) involved stretching power cables across from the chassis in SUS-C1 to the empty spigots available in the relatively unpopulated SUS-C2's +/-18V power rail. But, when the day came, we'd not remembered that plan, and the existing chassis power cables weren't long enough to make the rack jump. 

So, we did a "good enough for now" solution: installed a new +/-18V power rail into SUS-C1, and still powered it with the supplies for SUS-C2 in VDC-C1 U6, but connected the new SUS-C1 rail to it by modifying the junction box on top of the SUS-C2 rack. 

In doing so, we identified that the existing power supplies for SUS-C2 were on the list for replacement, so we replaced the U6 power supplies before making the connection.
               +18V           -18V
Removed       S1201904      S1201905
Installed     S1201909      S1201908

I've updated the VDC-C1 rack S-number, and SUS-C1 rack S-number to reflect these changes, but haven't touched the Record of LHO DC Power Supply System (links to these things above).

Prior to replacement, we measured the voltage supplied to be +18.81 [V] and -18.66 [V], and set the new supplies to that voltage after install. The new supplies measure the current draw what it supplies (All of SUS-C2 and the BIO chassis and Coil Drivers for the Beam Splitter) to be ~10 and 8.5 [A].

Ideally -- and what may be necessary -- is to install a new set of power supplies to support these two racks: we still need one more TACQ driver in SUS-C1 (which will use these VDC-C1 U6 supplies), and the planned, fully outfitted SUS-C2 which includes 7x more chassis. I bet those chassis will draw at least, if not more than, 5 [A] worth of current at +/-18V.

Pictures relevant to this install attached.

Labeled picture of SUS-C1 and SUS-C2 Junction Boxes showing the new SUS-C2 junction box's connection to SUS-C1.

2nd HXDS received from LLO

Yesterday I picked up the shipment from LLO contain the 2nd HXDS (first HXDS shipment alog87998) and related ASSEYs and brought it to the Triples lab. 

Uwrapping and inspecting was uneventful, the zip ties were intact, the shock pads untripped and the humidity indicator was unchanged in color. The outer (front, back) and inner (front, back) bags were in good condition, unwrapping the suspension I found no play with the blades.  All the nuts and dowel pins were tight and well seated, the ICS looks good except for it seems to be missing the HDS Intermediate Mass Fixture (D2000230-V1, s/n 08). The part is scribed as V1, on the dcc there's a V2 with two added 8-32 helicoils taps that, based on D1900352 which uses V2, I should be able to see from the front and I don't, so this is a V1 plate and not an incorrectly scribed V2. I believe these two missing 8-32 holes are where we will attach the BOSEM Mounting plate (D2000257). The first HXDS we received in November had the V2 plate. We may have to do a small rework to update it to V2, or have LLO send the V2 part if possible.

eMod Railing and Spiral Staircase Installed

(Corey Gray, Randy Thompson)

This morning (during mostly laser Hazard) I assisted Randy with work on the eMod Platform. The eMod platform is the elevated large work platform which is installed over the TCSx In-Air Table and next to BSC3.  The eMod is an additional workspace to be used for the installation of the BBSS (Big BeamSplitter Suspension) into BSC2 in the coming months.

Today, we craned up handrails and installed them in place.  After this we rolled the white powdercoated spiral staircase into the LVEA from the HiBay and then used the crane to position the stairs next to the eMod.  The stairs were attached to the eMod floor via qty 3 long 3/8-16 bolts.  (attached is a top-view photo of the installed stairs).

After this we cleaned up our area and then staged the new horizontal HEPA filter assembly which will be used later for the BBSS installation.

HAM7 - ZM4 physically moved in Yaw

Sheila, Karmeng, Rahul

This morning we physically moved ZM4 (since the sliders were saturating the DAQ output) in YAW to better align it with ZM5 and ZM6. More details (including health check results) will be posted later.

ZM4 is now dogged down to its new position. 

HRTS OM0 Optic-Prisms glued and then shipped to LLO

Betsy, RyanC, Rahul

This week we glued prisms (primary - sapphire and secondary - metal) to the HRTS OM0 fused silica Optic (D2100495-V5-OM0-0001). The gluing measurement details are recorded in the DCC - google spreadsheet (T2600012), link given below,

https://caltech-my.sharepoint.com/:x:/g/personal/rmcrouch_caltech_edu/IQBWQ2S3pJX9TZYxfDaXsCvfAcJh-mrpHPS2JGNtku6Srcg

Attachment01 and attachment02 shows the prism-optic in the prism gluing jig.

Attachment03 and attachment04 shows the base for the Bosem magnet/flag glued to the AR side of the optic.

Attachment05 and attachment06 shows the two prisms glued on both the sides of the barrel of the optic. Notice that the arrow points to the HR surface and there is only one scribe line on the optic. While in the jig the arrow should be pointing down and on the right hand side of the gluing fixture (facing down).

The optic is now on its way to LLO and will be suspended in OM0 in HAM6 chamber.

CER Hardware/Electronics Changes To Convert SUSB123 and SUSH34 to SUSB13 and SUSH34 Complete; User Model Software Changes Commencing

J. Kissel, F. Clara, O. Patane, M. Pirello, D. Barker
ECR E2500296, E2400409
WP 12962
D2300401 (for susb13) and D2300383 (for susb2h34)
G2301306 -- PARTII 2023 plan, PARTII Update 

We've completed all electronics hardware moves, cabling/recabling and new installations that we plan to do on SUS MC2, PR2, SR2, BS, and the future LO1 and LO2 for now.

Given that this change to the electronics is somewhere in between versions of the D2300401 h1susb13 and D2300383 h1susb2h34 wiring diagrams -- the interim configuration we're in now that 

    Does have
        - susb2h34 and susb13, as well as susauxb13 and susauxb2h34 with all their ADC and DAC cards, as they will be in O5.
        - All of the BS electronics have been moved from SUS-C5/SUS-C6 to SUS-C1/SUS-C2, and their CER cabling dragged along with it
        - all AI chassis driven by 28-bit 32CH DACs (7 in total) have been converted from a pair of D1000305 2x8CH DAC AIs to a pair of D2500353 1/2x32CH DAC AIs.
        - ITM AA chassis inputs (both OSEM sensors, optical levers, and CD monitors) and AI chassis outputs have been re-arranged such that the grouping is far more sensibly arranged and modular per QUAD.
    
    Doesn't have 
        - BBSS-like BS TOP mass converted to QOSEMs
        - BBSS-like BS M3 OSEM sensing and actuation electronics
        - Any LO1 or LO2 electronics
        - The BS optical lever in its final AA chassis position (because the BS TOP mass OSEMs still need that spot)
        
        - Any changes to the field cabling
            - the BS M1 satamps, M2 satamps, and M3 optical lever whitening chassis are all still in SUS-R6)
-- we planned /documented all of this work on google slides -- see PARTII Update -- which is linked in the abstract of G2301306.

We'll add more details, gotchas, and pictures below in the comments.