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.
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
The QDP80 roots pump serving the Vertex and XBM MTPs developed a temperature warning ~10 days ago and adjustments to the thermatic control valve have not resolved the overtemp (66C at pump body, < 60C is normal) -> I spun-down the Vertex and XBM MTPs and will investigate tomorrow when QDP80 is at ambient
0925 - Bradley comes in to see Bubba from Apollo 1015 - Landry, Bubba, Mark finish installing HAM1 cleanroom cover 1045 - Reibold Construction arrives for MichaelR. 1500 - HAM1 optics unlocked and closed. That makes HAM1,HAM2,HAM3 optics unlocked. Air pressure in HAM1 ~820 torr. 1500 - One spool piece inserted and anchored in MY void. 1525 - Betsy to roof.
Discovered that the Kobelco compressor (Corner Station purge air supply) had shut down due to high oil temperature -> Restarted and adjusted the throttle valve which supplies cooling water to the oil heat exchanger -> Purge air was OK during removal and reinstallation of HAM1 East Door. Must have shut down after the West door was removed but before it was reinstalled as exiting air was noticed when the West door separated but purge air pressure absent when the West door was rehung.
Nicole, Scott, Ed, Bubba (Apollo) Kyle, Jodi, Mike L, Mark H.(LHO)
On Wednesday the BSC Dome was removed from BSC5 at the MidX station. On Thursday the In-vacuum seismic isolation platform was removed and the Dome was replaced. Elements of the passive stack still need to be separated and some elements preserved. Further, one more in-vacuum operation is needed. The Support Tubes need to be chocked in place and strapped down for transport. This will require a few hours for a few people--let's say 3 & 3. At that time the door can be replaced. Currently the Dome bolts are all installed but not torqued. Of Note: *** The SUS feed thru on the Chamber now has a broken 4-40 screw body in one of the four threads. *** As I'll likely be instrumental in installing the 25 additional feed thrus required for advanced LIGI on each chamber, I'm sure I'll remember this one. And likely, the flange will have to be removed anyway as something other than the d-sub will be required in that location.
Stage1 Installed on Full Assembly
After measurements from Wed, some Walls & the Closeout Plates (on top) were removed from Stage1. Stage1 was then attached to the full Assembly. While lowering Stage1, we were not that level and this looked a little worrisome to Fabrice, so we re-hung Stage1 by changing eyebolt position---this improved level enough to attach Stage1 onto the Optics Table.
While inspecting the Assembly, it was discovered that some "arrows" machined onto Stage0 & Optics Table (which is part of Stage2) did not produce the result we wanted. The arrows were lined up of course, but the whole purpose of these arrows was to establish a correct orientation for Optics Table. On the Optics Table there are 3k+ holes, and then therae are line-grooves as well. These lines are desired to be parralel with the Support Tubes. Unfortunately, the arrow on the Optics Table orients the grooves out of rotation. [In the afternoon, the team was going to lift Stage1/Stage2 such that the grooves are lined up]
Subassembly Work
Parts were unwrapped and laid out for Spring Pull Down and Spring Pusher tooling. Sensor parts were also laid out. We will go through all these assemblies to confirm we have all the parts/hardware needed.
Clean & Bake
Assisted with wrap/bag/tag of parts pulled out of ovens.
