(corey, eric, greg, hugo, jim, mitch)

#6

Now that we had some hardware processsed, we were able to continue building up Actuators.

#7

Stiffener Assembly completed.  The Support Posts were installed (discovered we were missing a Gang Barrel Nut [it was in our "dirty" bin]); will want to get it processed before we pull down springs.

Stage0 Assembly moved to Test Stand.

Stage1 plate put on Assembly Stand.

The set of 6 horizontal L4Cs received in shipment load #3880 were huddle tested this morning, 

We noted a few points that we need to be careful about in order to perform this test correctly:

• Level the instruments
• Have them properly seated (check that they do not rock)
• Direct the instruments towards the same direction

Spectra are attached.

On Friday, after spending some time with Hugh, Bubba and I made a brief checklist (See below) to coordinate our efforts in the BSC1-HAM2 area.

1. Friday pm
     -Second cleaning BSC1
2. Friday pm
     -Move A-frames and I-beams to HAM 2 area
3. Monday am
     -Move cleanroom from HAM4 to HAM5
     -Remove doors and dome from BSC1
     -Stage Optics extract equipment at BSC1 South
     -Install SEI Soft Roof and adjust cleanroom location at HAM2
4. Tuesday am
     -Move Garbing/Staging cleanroom from HAM2 to BSC1 South
     -Optics de-install BSC1 (Lead: Cheryl, Apollo help)
     -Move Garbing/Staging cleanroom from BSC1 to HAM2
5. Tuesday pm
     -BSC1 ISI de-install (Contact Dale)
6. Wednesday am
     -Set up A-frames, etc at HAM2 
7. Wednesday pm
     -Install HAM2 ISI

The attached are the latest M0/R0 transfer function measurements on H2SUSETMY taken on the night of 06/02/2012.  Both chains appear to have no sign of rubbing and have most of their resonances coinciding with the predicted model.  The R0 chain appears to have a cross-coupled resonance in the Longitudinal DoF, but otherwise a very clean measurement.  This measurement suggests the top masses on H2SUSETMY are free-swinging without obstructing forces.  H2SUSETMY is ready for the BSC 6 pump-down. 

Dan, Jim and Dave

We have built up the primary H1 frame writer system, which consists of

Sataboy QFS file system in LDAS server room.
Solaris QFS writer in MSR room.
h1fw0 frame writer, on the 10GigE DAQ network and writing to the solaris box over a private 1GigE NFS link.

h1fw0 is writing frames which are identical to h1fw1.

h2susb78, the replaced front end computer for FMY, crashed again at 5:55pm after just over 6 hours operational. So it looks like the problem may be in the IO Chassis or the communications with it.

Attached are plots of dust counts > .5 microns.

Grouting and chamber door close at End-Y BSC 6.
Work on BSC 8 in the LVEA

(corey, eric, hugo, mitch)

#7

Started assembling Stiffener under Stage-0.  Managed to get about 75% done, and called it an early day due to high temperatures in Staging (swapping HVAC filters took temperature from 65deg to 72).  So, we didn't want to have more sweat than normal drop on Class-A parts.

Horizontal L4Cs

Helped Hugo troubleshoot issues with corner 3 L4Cs (we couldn't see their signal).  Hugo eventually tracked down the issue to all (3) BIO Interface  boxes & Corner (3) Anti-Alias boxes being turned OFF.

On behalf of Bubba, I write:

The cleanroom at BSC6 seemed to be drying the new grout faster than desired, so the cleanroom is being turned off for the weekend.

On the latest shipment of GS-13s to be repaired at LLO we included a G-View shock recorder. The G-View is 25g max and we had set the threshold for recording at 10g. On the graph you can see that it records 4 data points when any of the 3 axis (x y horizontal plane z vertical) 10g threshold is reached. According to LLO the battery had worked loose when it was received (on the 31st) but it doesn't look like too much data was lost as our last data point was the 30th.

Hopefully we can gather some more data as we ship containers back and forth. 

The welders are moving the plumbing already build at BSC7 to BSC2.  They've managed to disconnect without cutting.  Could be done with BSCs 2 & 3 pretty quick!

See photo for the modular design!

I swapped out many of the 3" shrouds for 4" versions where needed and possible.  All cables are strain relieved to either the bolt through the shroud or to the Cable tray where necessary.

See the photos below for a typical cluster.

For the record, this is the count of the PEEK cable ties and clamps installed in BSC6 on the SUS, ISI, and TMS:

(~13)  D1000600 sets on top side of ISI

(13) D1000600 sets on underside of ISI Stage 0

(6) D1000600 sets on underside of ISI Stage 2

(2) D1000600 sets on the TMS structure

(10) PEEK Zip ties on the ETMy QUAD structure

Each D1000600 set is comprised of 2 of the D1000600 PEEK clamps, so we used a total of

68 D1000600 individual clamps

BSC2 flooring was moved into the LVEA. The crew went into HAM4 and removed the dust barriers. BSC2 flooring was installed. (There was a slight delay caused by a missing nut.) The doors will go back on this afternoon.

h2susb78 remains unstable. It crashed between 2am and 3am this morning. It was removed from the watchdog system yesterday, and did not trip SEI BSC8 this time. I will power cycle it, and it should not crash SUS ITMY since it is no longer part of the Dolphin fabric.

J. Garcia, S. Steplewski

We made a set of TOP transfer function measurements on ITMY Tuesday.  This was the first time we tested ITMY since this chamber was pumped down.  Measurements were clean and the results match up reasonably well with the (fiber) model - although this is a wire rehang after the fiber break.

The .mat files are located in:
~/SusSVN/trunk/QUAD/H2/ITMY/SAGM0/Data/
~/SusSVN/trunk/QUAD/H2/ITMY/SAGR0/Data/

The .pdf files are located in:

~/SusSVN/trunk/QUAD/H2/ITMY/SAGM0/Results
~/SusSVN/trunk/QUAD/H2/ITMY/SAGR0/Results

D070081 S1102755, the e-traveler of which is available here: https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=58957.