HAM 7 has the HEPI frames as well as the weldments in place and ready for the crossbeam.  The jacks holding up the support tubes had to be relocated to give clearance to the clamps as well as allowing an extension piece to be attached to the end of the support tube.  To do this two jacks and the top clamp were used to cradle the support tube while the extension was attached and the jack relocated.  The crossbeam is rigged with a spreader bar and should be ready to install shortly. 

After lunch the chamber will move into the end station. No excitement at any time - this is good.

H1 DAQ H1ADCU_EX was reconfigured. We have replaced H1:SEI-ETMX_FINE2 with the new low frequency InfraSound Microphone channel H0:PEM-EX_IS_MIC. Acquisition rate remains at 256Hz.

Yesterday we completed some preliminary TF testing and ECD Damping tests on QUAD 2 (BSC 8 ITM). Attached plots include a comparison of: the previous build (Jan 2011), the Quad Model, no ECD blocks, ECD blocks reversed for minimal influence, and ECD blocks positioned approximately half-way over magnets. The plots are unscaled and have a couple of the model DOF mixed up. Note: The Watch Dog tripped during Pitch high frequency testing (without ECD blocks) preventing any drive signal being sent during the Yaw TF (without the ECD blocks). Yaw without ECD blocks is an un-driven response only. Once again, this is part of the preliminary testing and so this is not a concern because these tests were part of the process for building the new scripts, which will require several iterations before we are ready for final metal build testing.

(Corey, Eric, Jeff, Jim)

BSCISI #2

• Test Stand was leveled
• Bottom-facing Stage0 was helicoiled, dowel pins installed, and it was moved on to Test Stand.
• Top-facing Stage0 was put on granite table, and helicoiling/dowel pinning has started on it.

Jodi and Co. worked further cleaning box tests.
LVEA went to laser hazard this morning, there to remain for some months, with occasional interludes.
Dave reset the DAQ a few times and finally removed h1awg entirely. The DAQ resets have caused false alarms in the cryopumps, but should resolve themselves later tonight.
Keita and Co. are still attempting to recover the mode cleaner.

The old iligo wiki machine continues to freeze roughly once a week. So I swapped out the computer with the spare X2100 machine.

I rebooted the vacuum epics systems for EY, MY and MX to add the water pressure records. The EX channel was added at an earlier time. All four chans were added to the DAQ.

Kyle-
Rough-pumped Y-mid to ~2 torr to add layer of vacuum safety-> No gauges mounted,i.e.no CDS pressure indication -> waiting for Class A flange to mount gauge pair and Class A blanks to replace unneeded viewports.  

Kyle-
Installed remaining door bolts on HAM6 east door and torqued.  Noticed gaps between flanges on HAM3, HAM2 and HAM1 east doors. Also, HAM1 west door.  Bolts too loose for those which are difficult to access.  Easy-access bolts were tight -> I torqued gaps closed on these doors.  

Pumping Vertex with Turbo over long weekend.  Also pumping HAM6 with turbo backed by portable pump cart over long weekend.

(Corey, Eric, Greg, Hugh, Jeff G., Jim, Mitch)

BSC ISI #1

Only subassembly work today.  Today the Flexures were assembled. 

Also lots of organizing of parts.

BSC ISI #2

Spent most of the day flipping the Big Oven with Big Plates for the Assembly.

- No laser hazard today.
- Hugh and Apollo transport items between outbuildings.
- Terry Santini makes rounds at outbuildings.
- Gerardo and Keita take photos at REFL port and ISCT4.
- Dell support arrives for JonathanH.
- JonathanB measures viewport height at EY.
- Big group for Friday public tour.
- Ongoing preparations for welding in LVEA.

(Corey, Eric, Greg, Hugh, Jeff, Jim, Mitch)

HAM ISI #3

This assembly was removed from the Test Stand, placed in Storage Container, and has left the Staging Building----we now have more room!!

BSC ISI #1

Jeff & Eric pecked away at subassemblies.  Large & Small Actuators are just about done and are on the shelf awaiting installation.  Jeff has just about finished both types of Lockers.

BSC ISI #2

Have installed Adapter Plates on Test Stand, used Tooling to position Boxbeams, torqued down Boxbeams.  We still need to check/adjust level.

• Flooring work on H2 electronics building
• Powercycled H2adcumy to bring it back up, this seems to happen once a week
• Keita and crew in HAM6 inspecting the OMC. They found nothing obvious, but may go back in tomorrow
• Jodi running the air drill for box test

The annulus-type O-ring joints between GV11 and the removed/reinstalled iLIGO spool, this iLIGO spool and the new aLIGO GNB-sourced spool and this new aLIGO spool and the iLIGO beam manifold spool (3 joints total) were pumped down by hanging a small turbo at the closest annulus pump port and backing this turbo with an aux. turbo pump cart.  In all cases the indicated pressure at the CC of the aux. turbo inlet reached the mid 10-6 torr range after pumping for a few hours.  

The spools were vented at the time of the test.  These annulus joints are considered acceptable.  

(see previous entries regarding over temperature issues with CS Kobelco and Vertex+XBM QDP80 pump) 

Investigation showed that the chilled water for the Corner Station was running low.  Supply to highest elevation was ~15 psi (30 psi normal). -> Added ~10 gallons of glycol to CS chilled water system and QDP80 temp warning ceased within 10 minutes.  Normal temperatures by 120 minutes -> OK

The CDS control room main file server developed a problem at 19:30 Wed night and went into "read-only" mode. Reboots at 10:22 this morning cleared the problem. 
For future reference, here are the three emails it produced at the time of the problem

May 25, 2011 07:30:05PM - Controller 0
INFORMATION - Cache synchronization completed: unit=0

May 25, 2011 07:30:06PM - Controller 0
INFORMATION - Enclosure added: encl=0

May 25, 2011 07:30:33PM - Controller 0
INFORMATION - Enclosure added: encl=0

GV 7 soft closed
Swagelok representative arrives to meet with Apollo
Linoleum contractor arrives to meet with John
Diamond Freight pickup
H1 BS, ITMX and ITMY were unlocked from the earthquake stops. However, the BS side sensor looked abnormal, and Keita will go in to take another look.
Delivery from Oxarc for Kyle

(Corey, Eric, Fabrice, Greg, Jeff, Jim, Mitch)

So when we have parts, the SEI Team can throw down and battle with any schedule!

BSCISI#1

---Main Assembly:

There has been tons of work on this assembly.  Stage1 Closeout ("top") Plate was installed recently, and then the rest of Stage2 was attended to.  This morning we put the BSC ISI's "top hat" on (i.e. the Stage-2 Keel Base top plate).  This pretty much does it for big plates on this assembly.  Now we have lots of sub-assemblies and mass that we need to start loading onto this system.

---Sub-Assemblies:

The Small (Stage 1->2) Actuators have been assembled, and the Horizontal ones have been installed on the Main Assembly.  The Large (Stage 0->1) Actuators are currently being assembled.  A large and small Locker have also been assembled, and the rest can be built at any time.  As for other sub-assemblies, we have been working on kitting up parts for:  Sensors (for Stage0/1 & Stage1/2), Flexures (for Stage0/1 & Stage1/2), Blade Assemblies(for Stage0/1 & Stage1/2), Spring Pull-Down tooling, Spring Pusher tooling, and Blade Safety Restraint (for Stage0/1 & Stage1/2).  For the most part we look pretty good for parts and hardware.  There are a few things which are missing but they are only days away from being made available.  So, some of these sub-assemblies can be put together now, or when they get their missing parts, in a few days.

BSCISI#2

Stage0 has been put on the Granite Table, and is ready to be pre-assembled (i.e. dowel pins, helicoils, etc.).

HAMISI#3

Storage Container is in the Staging Bldg & has been cleaned.  The lifting hardware for the ISI is installed.  Tomorrow we plan on loading this assembly in it's storage container.  This will free up even more space for us in the Staging Bldg.

Shortly after the Apollo crew torqued the "big end" of the new aLIGO GNB-sourced spool installed in place of BSC6 at the Y-mid station, I began pumping the annulus volume using a small turbo hung from the spool's pump port and backing this turbo with an aux. turbo pump cart.  I will log the pressure information at the 24hr mark.  The pressure has been falling predictably for the initial 4 hours.

9:00 – unifirst delivery

10:00 – unlocking of HAM 6 ISI by M. Landry and crew.  

10:30 – Richard & Filiberto to End-X to look at vacuum racks.  Later also to End-Y, Mid-X, and Mid-Y

11:15 – unlocking of ISI completed.  HAM 6 door re-hung.

~2:45 – PSL chiller alarm.  Michael R. went out to investigate.

3:45 - delivery on-site