I've completed the vacuum crate reboots as specified under WP4113.  h0vemx, h0vemy, h0veey, and h0veex have all been rebooted using the new VxWorks boot server, vxboot, with no apparent issues (at this time).  These are the last of the VME systems requiring reconfiguration, which means the old boot setup can now be retired.  At the same time I moved these systems over to the new network switches installed in the outbuildings, in preparation for the old switches being removed.

PRM lower masses transfer functions from July 15th have been exported and are plotted in the attached documents below

(1) H1 PRM M2-M2 (July 2013) TF in 3 DOF (L P Y) plotted against hsts model (in blue) L1 PRM (July 2013 in orange ) and H1 PR2 (July 2013 in pink)

(2) H1 PRM M3-M3 (July 2013) TF in 3 DOF (L P Y) plotted against hsts model (in blue) L1 PRM (July 2013 in orange) and H1 PR2  (July 2013 in pink)

Both set of measurements are showing good agreement with the model, llo prm and lho pr2

Data, scripts and pdf files have been commited to the svn as of this entry

Note :

Since PRM M2 triple acquisition driver chassis hasn't been modified yet, the calibration factor in "calib_hsts.m" (living in sus/trunk/HSTS/Common/MatlabTools/) has been set to 0.32 mA/V, as described in the hsts electronics drawing summary. Value will need to be changed to 3 mA/V accordingly with driver's modif.

on opsws8, at 04-Sep-2013 09:35:28 PDT. It's gunna take 5* hours. 

*This is ridiculous!  I can get this done in DTT in an hour. I'm gunna dive into the what-has-become 16 nested layers functions and find out why it's taking so darn long. Sheesh!

After "resting" one of the three cooling units in the MSR, here is the subsequent temperature increase (two day minute trend plot). The Temp probe is located on top of the racks at the mid point.

Attached are plots of dust counts requested from 4 PM September 2 to 4 PM September 3.

Transfer functions are running overnight on both HEPI-HAM2 and HEPI-HAM3.

In the attached spectra (stage 2 Z motion), the isolation is really good except at 6.18Hz. It seems that some electronic noise is reinjected in the system. Some noise hunt is ongoing.

- Fire Department briefly on site

- Water refill

- Mats changed

- Concrete pouring for outreach

- TMS at EX work ongoing

- HAM ISI&HEPI testing

- Initial alignment at test stand working on ITMX

- HAM 2&3 commissioning measurements

- Recovery from FW0 failure

Top mass was freed. 

The cable buncle from the top mass to the ISI table was slightly bent and pulled so that it wouldn't lean on the edge of the top mass.

The top mass and the tele/table were both rebalanced.

BOSEMs were centered.

Temporary alignment stabilization toolings (D1100613)  were installed and adjusted such that the ISC table barely sit on top of the set screws. We weren't able to find the new ones, and we weren't sure if new ones were made at all, so we used the old ones from H2 EY installation.Without these, mounting the alignment target by IAS will tip the TMS balance by a huge amount.

Now TMS is ready for IAS work, but unfortunately the large alignment target of IAS didn't fit the TMS tele, four screw holes should be made larger.

Dan repaired the SATABO/QFS disk system h1fw0/h1nds0 use. I restarted the framewriter at 12:27 today, prior to that fw0 would only run for about 10 minutes at a time so the frame file inventory is very disjointed.

Unit 1 in the MSR has been turned OFF. Units 2 and 3 are ON with setpoints 70F. Prior to this all three units have been running for several months since the repair of Unit 2.

Last Friday, I created a set of complementary filters with a 40mHz blend frequency. I computed newblend filters and installed them on stage 1. After turning on the isolation loops (level 3) and lowering the blend frequency at 40mHz on stage 1 and 100mHz on stage 2, I left the BSC-ISI (ITMY) isolated for the week-end. Note that the HEPI was controlled in position (100mHz) and the sensor correction was not engaged.

This configuration passed the 3-day week-end. I have attached a nice spectra of the stage 2 motion in the Y direction (seen by the GS13s).

GS-13 pod number 68 arrived with damaged flexures from shipping some time ago. After replacing the broken flexures, re-sealing the pod and filling it with Neon, I leak checked it in the modified VBO A.

Initially I had some issues with an errant signal of Neon, but this was because I had forgotten to lower the ionizing voltage. Argon from a small air leak was doubly ionizing and appearing as Neon in the RGA. After lowering the voltage to 50v everything cleaned up nicely.

The GS-13 tested good, coming out under the 3e-10 torr L/s leak rate requirement set by the VRB.

cdsfs1 went into read-only mode Friday evening between 18:20 and 19:20. At 17:45 this afternoon I rebooted the machine using the standard recovery procedure. Backups are proceding.

While looking at the system overviews I noticed that h1fw0 is not running. It has been unstable from about 16:45 this afternoon. Unfortunately fw1 is not perfectly stable, it had failed around 3pm and 5pm with short restarts. fw0 cannot run for more than a few minutes without crashing.

The console message on h1ldasgw0 shows many errors of type:

samfs: WARNING: SAM-QFS: ldas-h1-frames: cannot flush pages err=43 ....

I called Greg, he and Dan will investigate further. Sometimes fw0 gets to run for 10 minutes before crashing, so I'll keep both frame writers going to minimize the possibility of complete data loss. Greg will switch LDAS to using h1fw1 as the primary frame source. 

Attached is a plot of the following 6 signals of that last 31h of IMC locking:

H1:PSL-FSS_FAST_MON_OUTPUT

H1:PSL-FSS_AUTOLOCK_STATE

H1:PSL-ISS_DIFFRACTION_AVG

H1:IMC-MC2_TRANS_SUM_OUTPUT

H1:PSL-FSS_TEMP_LOOP_OUTPUT

H1:PSL-PWR_NPRO_OUT_DQ

I didn't find a good PSL room temperature monitor, but I guess that all the fluctuations we see are temperature-induced in some form. See also elog 7593 for comparison.

- Corey, Andres, Hugh, Keita, Cheryl

TMSX telescope moved by Genie from the TMS lab to the VEA.  The telescope suspension wires were attached, and the telescope is now suspended.  The upper mass is still locked by EQ stops.  The vertical safety wire is installed, and the swing stop assembly is positioned under TMSX.  A rod on the swing stop assembly goes through two eye bolts on TMSX, preventing it from swinging into the QUAD.

Gymnastics of turning the telescope 180 degrees was documented more thoroughly in pictures today.

The telescope safety support beams were installed Wednesday (my idea), which mean the Genie would not fit under the upper structure, so we rotated the front beam out of the way after removing 3 of 4 bolts.

I returned to EX after lunch and attached the 4 cables to the ISC table.  Cables come from the clamp in the center of the upper mass, attach to raised wire clamps, and connect to the cable brackets on the ISC table.  They will need further tweaking after the upper mass is freed, to make sure they are not touching.

Pictures added later.