Following my previous log on PR3 power spectra, showing suspicious resonnances at 2.7 Hz for several degrees of freedom, Travis went in chamber and found a blade tip EQ stop touching.
A new set has been ran, and look very good, as what we expect.
To sum up phase 3a power spectra, the attached pdf shows comparison between LLO phase 3b (Sept 2012), LHO Phase 2b (Feb 2013), LHO phase 3a (before moving the EQS March 2013) and LHO Phase 3a (after moving the EQS March 2013)

data and plotallhlts_spectra have been commited on the svn

Cheryl V., Deepak K., Joe G., Betsy B., Jeff K., Guido M.

We discovered yesterday that the flag of the side OSEM on the first stage of the IMC triple suspension was hitting the top of the OSEM hole. Betsy moved the OSEM and it should now be free.
However, this should mainly affect the roll motion of the mirror. It did not fix the problem with the IMC1 alignment. 

The alignment problem turned out to be just a confusion between calibrated and non-calibrated data (thanks Jeff). The IMC mirrors were never misaligned. 

However, that puts the blame for the misalignment into the IMC squarely on the beam coming from the PSL table. This is something we need to keep monitoring and fix today.

GM

Jeff K. Arnaud P.

In order to confirm that the SUS-style dog clamps securing the HAUXs on HAM2 ISI table at LHO don't adversely lower their cage resonant frequencies, we took B&K measurements on IM1/IM2/IM3/IM4. We followed a similar measurement prescription as in LLO aLOG 3692.
The measurement was performed in chamber with the tri-axial accelerometer (as opposed to the laser vibrometer), mounted on the structure as described on the aatached picture ( X=Front and Y=side). The ISI table was locked, each had their IM scrapper baffles installed (secured to the front of the structure, as best they could be, see LHO aLOG 5633), the optic was freely suspended and the damping was turned off.

The pdf attached (2012-03-04_XYexc_H1_HAUX.pdf), shows that there is no resonances below the required 150 Hz (indicated by the vertical dashed line).

This should be sufficient proof that the SUS dog clamps are perfectly acceptable at securing the HAUX. Comparisons with LLO's data is to come.

The attached data lives in the SUS SVN under:

${SusSVN}/sus/trunk/HAUX/H1/IM?/BandK/

and has been committed as of this entry. This data was painfully exported following the procedure outlined here.

The data analysis was performed using

${SusSVN}/sus/trunk/Common/MatlabTools/BandK_plot.m

HughR, MitchR, JimW

Yesterday morning, TeamSEI finished most of the prep work for the BSC2 cartridge install. Lifting pads were added, cables were disconnected and tucked away, the ISI was checked for leftover tools, CPS racks were removed, and the walking plates cleared. A check on the underside is still needed, for more loose tools and to make sure we are not still bolted to the stand, but otherwise ready to go, IAS work still pending.

First cleaning completed  and door bolts (except four) removed yesterday. Second cleaning early this morning.

Install continues. We should be finished today. (1 16" with 7 small adapters, 1 12", 1 10" remain.)

WP 3740

Changed gds link to gds-2.16.3.2 to allow more than 64 models to be detected by gds tools.

J. Kissel

After noticing that H1SUSMC1 and H1SUSMC3 have deviated from their previous alignment (see LHO aLOG 5642), one speculation was that the SUS is somehow hanging improperly or perhaps rubbing. However, a set of transfer functions on both suspensions show that their dynamics are the same as what was in Dec 2012. A clean bill of health from transfer functions would/does not (of course) reveal the state of DC alignment (or cause of misalignment), but it at least rules out worst-case-scenarios like a wire break, invisible [EQ stop / flag / magnet] interference, or that somehow the optic's wires had been knocked out of their prism grooves. *phew*

-------------
The data was taken with the following DTT templates:
${SusSVN}/sus/trunk/HSTS/H1/MC?/SAGM1/Data/2013-03-04_*_H1SUSMC?_M1_WhiteNoise_?_0p01to50Hz.xml,
exported to ascii files with the same name (with the usual _tf.txt extension),
individually processed by 
${SusSVN}/sus/trunk/HSTS/Common/MatlabTools/plotHSTS_dttfs.m
and collectively compared using
${SusSVN}/sus/trunk/HSTS/Common/MatlabTools/plotallhsts_tfs.m

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot requested from 5 PM February 28 to 5 PM March 1. Also attached are plots of the modes to show when they were running/acquiring data.

Data was taken from h1nds1.
3600 seconds worth of data was unavailable on this server
1438.0 minutes of trend displayed

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot requested from 5 PM March 3 to 5 PM March 4. Also attached are plots of the modes to show when they were running/acquiring data.

Data was taken from h1nds1.
1440.0 minutes of trend displayed

LVEA laser safe all day.

-Technical cleaning crew working on BSC2 and BSC6
-Apollo installing feedt-throughs on BSC10
-Michael R restarted PSL
-Hugh wandering LVEA making HEPI inspections
-Platt Electric delivery for Richard M
-Travis working in HAM2 (1030)
-Maya Angelou Elementary tour of the site; interesting questions asked and answered
-Thomas V in LVEA doing SLC inventory (1330)
-Jim B to LVEA to check cabling  on H1PEM
-Corey G installing power supply on IOT2L

Lower level garbing/staging cleanroom moved into place and central curtain installed
Dome bolts removed
2nd cleaning at BSC2
Dome bolts removed (Additional cleaning complete.)
Leg jacks tested
Work on crane rails complete
Baffle assembly (work tables craned over beam tube, cleaned, moved into cleanroom)

Still need to:
Remove dome
Check chamber cleanroom function
Stage garbing/staging cleanrooms

The laser shut off over the weekend due to the power watchdog tripping. It looks like I had set the watchdog on the laser when the humidity was relatively high, and once the weather changed the humidity dropped back down and tripped the laser. We really need to look into this since the majority of shutdowns have been due to this humidity issue.

I took the opportunity to increase the current on the pump diodes to get us back to nominal power. The changes made are as follows:

• Diodes 1/2: 50 A to 51 A
• Diodes 3/4: 50 A to 53.5 A
• Diode 3 Temp: 25 C to 23 C
• Diode 4 Temp: 25 C to 22 C

This is from Friday morning.

With Jodi's help, I vacuumed the upper surfaces of the ISI. I found a fair amount of particulate, most of which appeared to be metallic flakes, though there was the occasional black fleck.I didn't think to get samples, but there are probably still specks to be collected, there's a lot of ground to cover. Most of what I found was collected in up-facing recesses in the plates, especially around the vertical L4C's. I also wiped down the keel and the larger exposed upper surfaces of the stages. Additionally, I found a bug that had crawled into the vent for a dowel pin and died, which I extracted by flushing with a large quantity of isopropyl.

Cheryl reported that MC1 and MC3 were badly pitched relative to the last time she worked with them. Trending the M3 level signals shows that it went bad at about 20:30 UTC (12:30 PST) on Tue 2/19, possibly in connection with the removal of dummy masses in preparation for installation of PR3 and PRM (alog 5527).

Travis looked and didn't find anything obviously touching, so Cheryl is going to check the table levelness. Then we'll do another round of TFs to confirm that it's fixed or provide further clues.