Cheryl, Peter, Joe Gleason, Stefan

After making sure the input mode cleaner was flashing with a good alignment, we did the following alignment work for HAM2 and HAM3:
- IM1/IM2 tweak-up to center through the Faraday.
- IM3/IM4 tweak-up to center on irises marking the center of PRM and PR2
- Rotated the PSL polarization by 90deg (45deg on the lambda/2 stage) (required because of the REFL periscopes on HAM2)
- Installed irises for marking the IM transmitted beam, just after MC3 and before PRM
- Installed re-direction mirrors to redirect the IMC REFL into the path of IMC trans (alignment using the just installed irises)
- Joe is still aligning the last steering mirror in the IM4 transmitted path.

Just after lunch h1fw1 started going unstable. We also found that data retreival from h1nds1 was slower then h1nds0. Dan investigated the solaris QFS writer and found it unresponsive. He rebooted the Solaris machine (h1ldasgw1) and performed a file check on the QFS system. No problems were found and h1fw1 was restarted.

We are in the process of upgrading all front end model mdl files from matlab 2010a to 2012b. To do this, we are opening the mdl files with 2012b, making a text change on the top level and then saving the file. The changes are to add the SVN tags $Id$ and $HeadURL$ as strings (or moving them/changing font size if they exist).

If the model is a common library part, it must be unlocked before it can be edited. This is done (after the model has been opened) by the matlab command line:

>> set_param('rtdemod','Lock','off')

where rtdemod is the mdl file name (leave out the .mdl part). You should see the padlock icon on the lower left disappear and you can make changes.

When you save, you have the option of asking matlab to save a 2010a version. Please do this, we can remove these files later when we have tested the system thoroughly with 2012b.

When you close the file the lock is reapplied.

09:11 Mark & Jodi - Installing dust barrier in BSC3
09:50 Koji – OMC work in H2-PSL enclosure
10:38 Mark & Jodi - finished at BSC3
10:45 Justin - transition LVEA south bay to local laser hazard
11:03 Hugo – compiled and restarted the H1ISIITMX model
13:00 Koji – OMC work in H2-PSL enclosure
13:30 Cory - Going to End-Y TMS lab to recover tools/parts
15:10 Koji - OMC work in H2-PSL enclosure 
15:49 Dave – Recycled Framerwriter1  

Since we are in the process of saving all models with Matlab R2012b, the models can no longer be edited with Matlab2010.  So, the default Matlab version has been moved to R2012b.  Note that copies of models that work with Matlab 2010 exist, so it's possible to return if needed.

• Yaw: +23 µrad (CCW)
  • Target: 0 µrad
  • Error: +23 µrad (CCW)
  • Tolerance: ±50 µrad

SUS WD were connected to BSC-ITMX model.

The re-assembly of the Test Stand cleanroom was started at Y End and continued for most of the day. Mark Layne went into BSC3 to re-install the two ICC Dust Barriers (slots off-set and covered with taped on foil) between BSC2 and BSC3. This activity was completed by 10:45 am. After the cleaning crew completed their work this morning, Bubba and Mark L. worked on the BSC9 viewports. The two viewports on the door were attached (FC on both sides) but not torqued. There was some confusion associated with the illuminator and video camera viewports: the serial numbers on the documentation did not match up with the viewports on hand. Bubba consulted with Keita and then we unsuccessfully tried to track down (H2 PSL enclosure x 3 calls with no answer, VPW, desk) Joe D. to clarify the issue. If Keita can't find Joe in the PSL enclosure later today, we will talk to Joe in the morning.

Richard requested a new CDS subsystem for the safety controls system. It is called "saf", I have added it to the userapps SVN repo with the usual directory structure.

We should add SAF as a subsystem to the ALOG.

Friday was a busy day!

--- PSL ISS Cable Install - Jim, Mitchel

They got the cables installed in the flange with the worst access.

--- PSL PMC recovery - Filiberto, Stefan, Sheila

Replaced PMC electronics and brought the PMC back to stable locking.

--- IMC alignment - Peter, Justin, Cheryl

Input beam from the PSL was aligned to the IMC irises.  I aligned the IMC and it is flashing.

-----------------------------------

On Monday, there is still a fair amount of alignment to do in HAM2 before the PSL ISS can be installed.

1) IMC alignment check - check to see that the PSL beam is still well aligned, and flashing is good

2) Align through FI - requires aligning the beam to PR2 in HAM3

3) Reroute MC REFL as IMC TRANS

When these alignments have been completed, the PSL ISS Assembly can be installed in HAM2

-----------------------------------

IO install work to do latter in the week:

- remove, rework, and replace the PR2 scraper baffle

Had to pull these down to get access to the BSC3 North side actuators.  Main ground wire also disconnected.  Completely SEI subsystem fault for not carving out enough space to actually work around the HEPIs.  Baskets are on the floor nearby with hardware. These really should remain out of the way until HEPI is more completed.

Completed the four Horizontal actuators attachment today.  Plenty pain but had worse.  Based on the Dial Indicators I may have knocked us out of the Yaw Spec.  Jason logged 35urads CCW and I measure 111CW putting us at 76urads CW.  This is averaging the four transversely oriented DIs and a few more or less here and there and we could be ok or we could be worse.  So, best to just let IAS look and see.  If it remains this smallish amount, SEI can likely crank it around with the HEPI DSCW Springs leaving the Actuators attached.  Translational moves are insignificant and level shift only improve on the level--gotta get lucky somewhere!  Still, the level should be check again as well.

Alastair H. Thomas V. Joe D. Greg G.
The install of the steering mirrors went really smoothly today. Alignment will for Y-Arm will begin this weekend.

I have added python 2.7 and nds2 client v0.10.4 software to x1boot.  

Patrick, Dave

To test reconnection rates of conlog vs edcu, h1susetmy model was stopped for 30mins this afternoon and restarted at 16:47.

Alexa, Keita, Stefan and Sheila-

We have the last optic mounted and balanced in a tip tilt (SN 33) for HAM 6 (OM3).  We had difficulty balancing this the optic in this tip tilt,  even with a short bolt, 2 nuts and a washer on the back side we could not balance it.  Keita brought out SN20 and 25 which are intended for India (and do not have cables attached).  We had a similar problem balancing one of these.  Keita then noticed that there is slop in the four scews that attach the piece that clamps the wire to the rest of the mirror holder (picture attached, these are the 2 bolts on top and the 2 bolts on the bottom of the photo.) The tip tilts we were able to balance had those screws centered in their holes while they were off center in the tip tilts we were unable to balance.  We centered them on the india tip tilt and then we were able to balance it using a dummy optic.  We then did the same thing on the TT that was originally intended to be the H1 spare (SN33).

In the process we used a dummy optic from iLIGO that has a scratch in the center to avoid chipping more real optics.  

We took parts from TT SN9:  the peak nudge  (which was missing from SN33), the small screw that tightens the balancing bolt (we dropped this) and one of the OSEM flags (one flag on SN33 was bent).  

In the end, we have not changed anything for the india tip tilts (SN 20 and 25) except correcting the position of the small bolts, we have 3 balanced and ready for HAM6 (SN2,4, and 33) and one H1 spare (SN9) which is missing parts and needs the wires reclamped.  

On monday I will double check all of the serial nubers written in this alog to make sure they are right.  

The attached pdf contains plots of the accelerometer response from B&K impact hammer tests.  There were six locations on the ETMY sleeve structure selected for impacts.  Each plot displays the response in each degree of freedom (X,Y,Z) of the accelerometer.  The orientation of the accelerometer was such that the X direction is vertically up the structure, and the Y,Z directions in the horizontal plane of the optic.  Each measurement has five averages with 0.5Hz resolution.  

Data:
'~/sus/trunk/QUAD/H2/ETMY/Common/VA_Testing/2012_03_26_h2etmy_hammer_test/'

Plots: 
'~/2012_03_26_h2etmy_hammer_test/plots/'