Attached are the power spectra plots for the M2 and M3 levels of H1-SRM. 

Michael R, Rick S, Cheryl V

The exterior surfaces of the PMC mirrors inside the tank were cleaned today. Our cleaning method involved wiping the mirror's surface with acetone 5 times, followed by 5 wipes of methanol. All four mirrors were cleaned. The result is a gain of 10W in transmission, from 140W to 150W.

As of today, the interior surfaces of the input and output PMC windows, as well as the exterior surfaces of the PMC mirrors have been cleaned. The FSS and ISS windows have not been cleaned yet. We have gained about 19W total from cleaning both the windows and the mirrors.

Mark B.

Started TFs concurrently on both MC1 and MC3 at 16:50. Will monitor from home tonight.

At 22:30, MC1 had finished undamped TFs and was making good progress on damped TFs, but MC3 had tripped (just) the USER DACKILL again and I aborted the script.

We pulled all the 'unplanned' auxiliary payload from the ISI and located the 60kg of makeup mass per D1000906.  This mass is bolted down and with conversation with SUS should not be in the way for Suspension or Template installations.
I was going to survey the table with all the payload removed but I just forgot and then didn't want to unbolt and remove the 60 kg of mass.  It does have substantially less weight on the Optical Table now though and I did shoot the elevations again:

Three of the four shots were exactly the same elevation, the NE corner of the optical Table was 0.1mm higher.

ITMy has had its ECD magnets replaced with the dummy Al blocks and BOSEM captured screw brackets installed.  Due to the change of COM induced by the ECD magnet replacements (actually a correction to the COM as calculated), some minor pitch alignment work is required on both chains.  This alignment will be done to the "by-eye" level tomorrow.  Simultaneously, we will work on recabling and beginning to re-test.

Betsy and Filiberto

Although I saw some coherence yesterday after we continued our excitation hunt yesterday, it was likely only on DOF signals with large T1 and T2 OSEM drives.  The excitation problem  continued even though Mark reported that I had reported things looked improved in his alog yesterday.  Yesterday, I also found that the quadrapuss which was switched into this supension last week was broken - one of the legs had  a band-it come loose.  I took that cable out and plugged back in the original quadrapuss.  Filiberto and I traced the in-vacuum to in-air cables up to the satellite box and confirmed we had good signal via inputting offsets in the coil_out channels.  After that I sat back down to DTT.  I then noticed that the template I had been using for diagnostics had incorrect units causing the trace to look funny.  Quick TFs NOW appear to look normal.  So, between Filiberto fixing swapped binary cables, the ADC board swap, the errant quadrapuss swap, and improper plotting of the TF data, MC3 looks to be healthy again.

Side note - after I saw that things looked much better, I switched out the moth-contaminated MC1/MC3 shared quadrapuss cable and tweeked centering of top BOSEMs on both suspensions.

We are ready (again) for Phase 2a TFs on MC3 and Phase 2b TFs on MC1.

PT343B did "fire" a few hours after being isolated from the BT and gave believable pressure values while in the artificially high pressure range of 10-7 torr (see attached) -> Opening back up to the BT resulted in the indicated pressure falling through the nominal value and continuing on into the bogus indicated values 

Leaving 10" pump port valve X1-9 open, i.e. in the nominal configuration

After completing the HEPI Actuator attachment yesterday, the doors have been pulled this morning and elevation surveys have been run:

NE    SE    SW     NW      Notes
-2    -5     +5     +2      Stage0 mils(.001") 
-.7   -.7    -.4    -.5     Optical Table (Stage1) Unlocked mm wrt nominal elevation
-.5   -.5    -.3    -.4     Optical Table ISI Locked mm wrt Target Elevation

We mull over these numbers to see if we need to do anything.  Remember, these may change after we exchange dummy payload for Suspensions...

This morning the cleaning crew did a second cleaning.  Shortly thereafter the doors were removed.
Ran some vertical surveys and locked the ISI.  This afternoon we'll remove the dummy payloads and make ready for SUS install.

   I reran the TFs last night on HSTS H1-SRM metal build. The results are much improved over the first set of transfer functions. All scripts, data, and results files have been added to SVN.

   The team is centering the AOSEMs on the M2 and M3 two stages so we can try to run power spectra during lunch.   

Mark B. and Betsy B.

Yesterday afternoon, Betsy set up the MC1 for measuring OL values and I logged the values. Later, she set the OSEMs to half range (based on staging building gains and offsets).

This morning we computed the final offsets and gain and entered them into MEDM:

M1T1 25624.2 1.1708  12812.1
M1T2 28820.2 1.0409  14410.1
M1T3 27449.3 1.0929 13724.65
M1LF 27304.6 1.0987  13652.3
M1RT 23813.5 1.2598 11906.75
M1SD 25168.3  1.192 12584.15
M2UL 26288.6 1.1412  13144.3
M2LL 24343.8 1.2323  12171.9
M2UR   24540 1.2225    12270
M2LR 24557.9 1.2216 12278.95
M3UL 27280.5 1.0997 13640.25
M3LL 25514.3 1.1758 12757.15
M3UR 26364.8 1.1379  13182.4
M3LR 26645.6 1.1259  13322.8

I created two new scripts to make this easy:
^/trunk/Common/MatlabTools/logOSEMs_IN1_H1MC1.m logs the OL values
^/trunk/Common/MatlabTools/prettyOSEMgains.m creates a pretty table, as above.

   Ran TFs on H1-SRM last night, see attached plots. Results showed rubbing, suspected as being on the Top Mass side. A check of the suspension found both the left side EQ stops were touching the mass, which we backed off. We rechecked all other EQ stop and adjusted as necessary. We centered the Tablecloth, BOSEMs, and reset to 50% light. The TFs are setup to run tonight starting at 18:00.

PT343B never "fired" following a previous power failure -> closing this valve isolates PT343B from the beam tube (pump) which may result in a large enough rise in pressure "seen" by the gauge to support discharge

daqd process died, final messages include 
"start net-writer 1034523398 17204 { long list of channels", 
"->4 kill net-writer 0", 
"connection on fd 15 closed", 
"read(seq_num) from NDS failed; errno=0", 
"connection closed on fd=16", and 
"Ask for retransmission of 20 packets; port 7097" which was repeated many times, then 
"Have to skip 22 packets (retry limit exceeded)" as the last entry.

Restarted daqd process.

Mark B.

After Filiberto and Betsy had poked around on MC3, Betsy was able to start a yaw TF with DTT and see coherence, so the electronics is better off than it was.

To see where we're not at, I started a suite of Matlab TFs at about 16:20 and will check on it from home tonight.

As of 10:35, the measurement has failed twice with the USER DACKILL (but not the WATCHDOG) tripping. Trying one more time…

USER DACKILL found tripped at 06:35, after end of third attempt - giving up for now.

B. Bland, F. Clara, J. Kissel

At the request of Betsy, given the confusion on the inability to drive MC3 (see LHO aLOG 4462), I took a quick look through the software side of things to be sure all was well, and indeed I see nothing out of the ordinary. 

Here's my assessment:
- There have been software changes involving the IOP model (modifying the IOP watchdog) on Oct 09 (see LHO aLOG 4402), and also hardware changes (swapping out MC3-only, T3LFRTSD quadrapuss cable) on Oct 11 (see LHO aLOG 4423), before Mark attempted to take transfer functions on Oct 12-13 (see LHO aLOG 4432) which show no coherence (again, according to LHO aLOG 4462).
- Filiberto reports that 
     - He can see drive going into (from the AI chassis) the coil driver chassis (though I didn't catch exactly to which cables he was referring), implying the that software checks out, i.e.
          - The BIO I/O is functional (arranged/routed properly in software, traveling well across shared memory)
          - The IOP watchdog is allowing signals to flow
     - He cannot see anything coming out of either the COIL or TEST outputs (going towards the SatAmp on the way to in vacuum).
- Betsy reports that 
     - MC1 is able to drive and transfer functions look normal, implying that
          - the shared cable between MC1 and MC3 remains functional
          - The BIO I/O is functional and allowing drive
          - The IOP watchdog is allowing signals to flow
     - She's cranked on the centering knobs for each OSEM involved with the T3LFRTSD and confirms correct sensor response implying that signal chains are connected to the right OSEM

From we conclude that something is awry with the drive signal chain between the input to the coil driver from the DAC / AI chassis to the tip of the in-vacuum quadrupuss cable for T3LFRTSD. This leaves the following possibilities:
- Coil driver board has malfunctioned
     - Can we see anything coming out the coil driver monitor boards in either TEST or COIL configuration? Looks like the noise monitor channels are white -- does this model not exist yet / is it not running?
- The Binary I/O switch chain had failed
     - (though the monitor bits indicate that the chain is functional, both in the TEST/COIL switch and LP switch)
- The rest of the ex-vac chain has failed somehow (Coil Driver to SatAmp cable, SatAmp pass-through, SatAmp to fake-feedthrough)
- The rest of the in-vac chain has failed (the quadrupuss has been swapped, but how about the D0900225?)

Good luck!

[Alex, Cheryl, Deepak, Giacomo]

Yesterday we put the optics in all four HAUX:
HAUX SN006: IM1 = SM1-05
HAUX SN007: IM2 = PMMT1-04
HAUX SN008: IM3 = PMMT2-02
HAUX SN009: IM4 = SM2-01

Cheryl and Deepak are now trained in the art of HAUX open-heart surgery! :-)

We also put all cables in place: sat-amp->field cable->adapter cable (fake vacuum feed-through)->extension (just dummies, the final ones are already in the chamber)->quadpuss (finals).
16 OSEMs were connected and tweaked (by moving the LED and/or PD plates) to obtain a open light value of at least 25k. Only two of them (S/N: 211 & 491) were unable to reach 25k (reading just above 20k), and were replaced with 2 of the 4 spares to be on the safe side. The other two (S/N: 230 & 212) were not tested at all.

A list of OSEM assignment and measured open light value follows:

---> IM1
Cable S/N:  S1105084
A (UL)  S/N: 204  OLV: 29000
B (LL)  S/N: 454  OLV: 27000
C (UR)  S/N: 199  OLV: 26000
D (LR) S/N: 262  OLV: 29000

---> IM2
Cable S/N:  S1105082
A (UL)  S/N: 237  OLV: 25000
B (LL)  S/N: 427  OLV: 29000
C (UR)  S/N: 468  OLV: 26000
D (LR) S/N: 450  OLV: 28000

---> IM3
Cable S/N:  S1105078
A (UL)  S/N: 377  OLV: 25000
B (LL)  S/N: 292  OLV: 26000
C (UR)  S/N: 404  OLV: 26000
D (LR) S/N: 309  OLV: 26000

---> IM4
Cable S/N:  S1105083
A (UL)  S/N: 189  OLV: 27000
B (LL)  S/N: 403  OLV: 29000
C (UR)  S/N: 436  OLV: 27000
D (LR) S/N: 239  OLV: 26000

We measured the OSEMs noise in open light position (and exposed to ambient light... not sure how much this impacts performance), as a sanity check and reference. See attached figure (left/right are just two different groups of 8 OSEMs; bottom graphs show the coherence of each OSEMs with he first one, as a check for common noise).

Also, we finished alignment of 2 HAUX (SN006 = IM1 and SN008 = IM3), except for DC pitch balancing, inserted the OSEMs, clamped them down to the table and covered them with a HxTS fabric cover for some night measurements. As we don't have actuation yet, we just let the suspensions swing all night (2012/08/28 from 3:00 to 13:00 UTC should be quiet time). Attached is a PSD taken during this time.