After moving the jigs to the west bay clean room for more space, we were able to finish the mods requiring the use of a punch that previously got bound up.  Next step is to bend the blades and move the baffle onto the balancing fixture.

This morning, I worked on balancing and floating the ITMX ISI. I also added some "temporary" masses (3kg) to the optical table to approximate the missing weight of the SUS fiber guards. As of now, the balancing is done, but I still need to go back in and fine-tune the lockers, then re-gap CPS's. Only issue I had was the LVEA seems seismically noisier than the end-station, which makes reading the floating position of the ISI on the CPS's difficult.

IAS measurements@EX

Conduit run@EX

SEI Work@ITMX

CP Baffle assembly continues@LVEA

H2 laser hazard for ISS PD work

Tumbleweed removal along X-arm

815 Townsend controls here to work on lightning arrestors

820 Sprague

900 DAC error on H1IOPSUSH2B –restarted

1030 Paradise Water

1200 Peter K restarting PSL frontend

1400 Mark B driving IM1

The x1fe3 was refusing connections on port 22, rebooted.

(Alexa, Kiwamu)

We deattched the IOT2L lead pipes from the HAM 2 viewports. We also disconnected all the cables onto the feedthrough of IOT2L. So the table can be moved!  (I have attached a little schematic/drawing of the cable layout)

Joe and I commenced the cleaning party on the two SM2 this morning. It took a couple of hours to pre-clean the tapped holes on each mirror. Very little debris came out with the Liquinox swabs and, as usual, rinsing the Liquinox was good, clean fun. Once we were satisfied with the pre-cleaning of the holes, we stopped for lunch. After lunch, we prepared the isopropanol bath in the designated pan under the fume hood. We wanded the tapped holes and then each of the honey-comb pockets on the back of the first mirror. Next, we transferred the mirror to a flow bench and removed the Teflon disk so we could perform the isopropanol rinse/N2 blow-off of the optic face. After a brief inspection, we replaced the Teflon disk and set that mirror aside. Then, we ran through the wanding etc. on the second mirror, inspected it and replaced the disk. The mirrors are setting on the flow bench until they are needed. 

We came out and talked to John about what he wanted us to do WRT FTIR. John asked to see the procedure that we had followed and asked a few questions. After hearing our responses, he is willing to accept the SM2s as clean without an FTIR.

There were some network outages today starting at 10am local time.  This was do to a reconfiguration of the network to provide more flexible routing of traffic between PNNL (local transit provider) and ESnet (main ISP).  The testing of changes was completed around 11:15am local time.

The main work is done there are a few minor changes which may interrupt the network again.  These interruptions will be on the order of seconds.  I will post a follow up comment when the work is complete.

Looks like the PSL went offline yesterday (10/28) at around 11:09 local. Sheila will try to get in and restart it later today. This is Justin not Gerardo.

At about 9:03 PDT, there was a timing error detected by the DACs on h1sush2b, which resulted in all outputs being set to 0.  The only remedy is to restart the IOP model, so I killed h1susim, restarted h1iopsush2b, then started h1susim again.  This has cleared the DAC error.  I burt restored to 8:00 PDT.

Checking the Dial Indicators this morning-- Largest horizontal shift is 3 mils (<0.1mm).  So HEPI has not moved.

Stopped test code running on opsws8 (alog 8207) at 09:11 (controlling dust monitors in the optics labs)

Started code in 'screen' on h0epics:
cd /ligo/home/patrick.thomas/epics/iocs/dust/dust_met_one_227b_comp_ctrl/iocBoot/ioch0_dust_lab/
screen -S 'h0dustlab' -d -m ../../bin/linux-x86_64/dust st.cmd

Ran burtwb on /ligo/cds/lho/h0/burt/2013/10/28/00:00/h0dustlab.snap

This is the only IOC currently running on h0epics. The other dust monitor IOCs are running on h0epics2.
Will let this test run for a few days before migrating the other dust monitor IOCs to it.

The 8 coefficients for MIMO tilt decoupling have been installed. Since we don't have an alignment matrix like in the ISI, I installed the product of the Local to Cartesian Position Sensor matrix and the tilt correction matrix.

Data has bee taken to check the decoupling results, both for the matrix resulting from SISO calculations and from the MIMO calculations (see yesterday's log for details)

The figure attached shows that the tilt horizontal couplings has been reduced to the order of 1e-3 for all 4 transfer functions (on the left of the vertical gray line, and under the horizontal one).

X to RX results show why MIMO calculation is slightly better. The effect could be larger if the RX to RY couplings were higher on other units.

We'll review these results at tomorrow's testing meeting, and will likely start working on a procedure to automate this process.

Modified /ligo/cdscfg and /opt/cdscfg setup scripts to allow a user to use an alternate userapps checkout.

To use, check out a private copy of the userapps repository into your home directory and then:

source $HOME/userapps/etc/userapps-env.sh 

or set the PRIVATE_USERAPPS environment variable and source the top-level CDS configuration script:

export PRIVATE_USESRAPPS=$HOME/userapps
source /ligo/cdscfg/stdsetup.sh

- HEPI actuator attachment at ETMX: Greg G, Jim W
- MC Baffle assembly in West Bay: Mitch R, Gerardo M.
- Work in H2 PSL Enclosure: Peter K.
- Transfer functions on ITMX SUS: Arnaud P.
- TCS Steering mirror cleaning: Jodi F, Justin B
- Pump bagged vacuum joints on GV6: Kyle R
- Restarting ECATC1, working on PLC2: Sheila D
- Removing beam tube insulation: Contractors
- Work in TMS lab at EX: Cheryl
- Roof top camera was blown or bumped resulting in loss of range of motion, Richard M notified

After serious searching (OSB Optics Lab twice, VPW) this morning, Greg and I were able to locate the cleaning fixtures shortly after lunch: they were still attached to some obsolete steering mirrors that were not stored with the bulk of the TCS parts. I carefully removed the tooling (Teflon disk, gussets, handle) from the old mirrors and put it on the new mirrors. This task was completed at about 3:15 PM. We will try cleaning the mirrors tomorrow.

Commencing Matlab TFs on IM1 at 3:00 pm to debug new HAUX support in the script.

Attached are damped and undamped top mass transfer function results taken last friday night for SRM phase 2b (test bench, surrogate glass mounted)

Undamped TF are matching the model, cf the first attachement. Damped TF are slightly different for longitudinal and roll (cf second attachement), which might be due to a discrepancy between the design gain and the medm one. Since the filters will be redesigned soon, there's nothing to worry about for now.

The last attachement shows a comparison between SRM phase 1b (staging building), the last phase 2b measurement, and PRM phase 2b back in february.

The only 2 differences seen are for the pitch DOF (5th page)

1) SRM gain at DC is slightly higher by a factor of ~1.3 compared to PRM

2) Phase 2b shows a slight increase of the longitudinal to pitch cross-coupling at 2.8Hz compared to phase 1b

Other than this results are good.

Travis will be centering the lower stages osems this afternoon in order to check the actuation chain, before closing phase 2b.

Note : SRM has the "side" osem, which drives the "transverse" DOF, on the opposite side as PRM. The gain for the side drive is then different, (+1), cf the picture attached as reference.

The new settings have been saved under the "safe" snapshot.

I made changes to plc2 on h1ecatc1, adding variables and function blocks for the PLL boards and the FindResonance library, which can be used to automate the search for the VCO frequency offset needed to bring the arm cavity on resonance using ALS.  I did not make any changes to the system manager, this will need to be done for the PLLs once the corner 6 chasis arrives. 

Everything is in SVN. 

When I try to use the installation scripts, activate and run always fails for PLC3.  (TCS stuff)  However, I can go the PLC control, loggin and run and it seems to run fine.

We looked at Arnaud's TFs taken last night on SRM and determined that there was something unhealthy in the vertical/roll, pitch directions of motion as seen by the top BOSEMs (T1, T2, T3).  Travis investigated and tweeked a few seemingly non-issues:

Slightly offcenter T2, possible loose cable connections (ha!), possibl droopy C3 cover at the top.  A quick look at DTT roll and vertical and these don't seem to have helped...  Arnaud is looking at verifying direction of excitation motion now.