(Adrian, Bubba, Corey, Dale, Fabrice, Greg, Jeff, Mitch, Sebastian, Vincent, and many others who've helped with the building of this assembly over the last few months/years!)
Bright and early (7am!), the SEI crew began the task of removing LHO's BSCISI#1 Assembly. Before the actual move, lots of activity commenced to get the task going (i.e. gathering lifting hardware & installing, clearing out space for the move, disconnecting cables, etc.). Once everything was ready to go, the team & the job went like clockwork. The Assembly was lifted and lowered on to Storage Container platform.
The Storage Container we used for this move is for a HAM ISI Assembly, and was retrofitted for the BSC. One item which couldn't be fixed was top of the enclosure (it is too small for the behemoth known as the BSC ISI!). So we used several C3 Covers to cover the Assembly, and then used plastic wrapping to cover the gap between the covers and the platform. Once we were happy the system was sealed up, it was rolled out a few feet with our large mechanized pallet jack. For the next move, Bubba and "Big Red" (the large capacity forklift) took over and carried our heavy load up the hill and over to the LVEA.
The Assembly was then rolled into the LVEA via the big pallet jack and placed in a spot for pick up with the main crane (here the Assembly was partially unwrapped to regain access to the lifting gear; it was then lifted off the Platform). The system was lifted and traveled over a few beamtubes and made its way to the waiting Test Stand in the LVEA's West Bay.
A minor issue was noticed here: we did not have correct studs for the Test Stand! The retrofit plate used on the Platform used coarse-threaded rods to capture the ISI. We should have used fine-thread, because fine-threaded rods/bolts are used for all of our Test Stands and the actual Support Tubes. Since we had a load in the air and it was not in a cleanroom, we decided to lower the Assembly on the Test Stand without the threaded rods in place. (as I type, correct threaded rods have been found and the team is now re-lifting the Assembly, installing rods, and dropping the ISI on these rods on the Test Stand).
All of this activity went pretty smoothly, and was done well before lunch!
I've attached a few photos from this activity (via my phone) to this entry. I also took quite a few videos with my phone, but since they are too big for the ALog, I uploaded them to ResourceSpace. They are located here:
Our cinematographer Dale also took tons of photos and videos as well, and I'm sure his work will be posted soon as well.
::::: Note: So from about April 11th, we went from having parts in the kitchen-----> Today June 30th, where we had an Assembly on the Table! :::::
... and Unit #2 was floated in the staging building later in the afternoon!
Here are some of Dale's "Best Of" shots from the BSCISI#1 move from last week:
https://ligoimages.mit.edu/?c=634
After discovering that get_data.m could not retrieve data (when I was able to retrieve stored data the week before) I went to D. Barker for help. After a few minutes of help from the CDS Masters (Jedi, Geniuses, whichever you prefer), they found that during the last make, make/install of h2susitmy, the H2SUSITMY.ini file had been hijacked by the RCG and all acquire=1 were overwritten to acquire=0. If nothing is being stored, nothing can be retrieved. Some quick search/replace calls and the file was fixed. A new copy is saved at /ligo/svncommon/SusSVN/sus/trunk/QUAD/H2/ITMY/Common/DaqFiles/H2SUSITMY.ini.20110630 (as a backup to the archive directory or if you don't want to try and figure out when the last time we had a working copy). Restarted H2SUSITMY and restarted the h2dc0 (with permission of course). We can now see past data, yeah!
Events: - LDAS HVAC work continued today, finished this afternoon, cluster should be fully functional again - Delivery from Office Depot for Rick Savage - LVEA in modified laser safe condition since ~9am - Dale leads tour for SURFs and teachers in LVEA - Cyrus to EY to install computers in racks - Ken to EY to work on electrical - Hanford groundwater inspectors on site - Patrick to ISCT4 to shut off hose for a dust monitor Operators: Dani added new EPICS alarms under the PSL menu to alert you in the event that eye-hazardous amounts of PSL laser power leaks past the RM. Look for alarms in the IOO-MC_PWR_IN or RM OSEM channels that will alert you to excess light and a dangerously aligned RM, respectively. If these alarms ring and you have not been informed accordingly, press the laser kill switch (at former scimon workstation) and call Dani immediately. Yet, this is extremely unlikely because the RM has been railed with a hardware voltage bias that has been tagged out, the half waveplate rotator has been de-energized, and the PSL table interlocks are engaged.
The first article Work Platform was given initial fit check around BSC-4. The platform was craned into place with the decks bolted together and then the legs were attached. The platform seemed sturdy enough (John and Bubba walked on it) although John expressed some concern about whether there might be some rubbing against cross-beams, etc. Next, we will see if we can get a cleanroom to fit around the platform or take some careful measurements. Walking plates may be ready for fit check (in BSC-7?) by next week and E-module/spiral stairs (at Y-end?) the following week.
We spent time yesterday afternoon working on tooling (planing veins, stoning barrels, etc.) with John's help. We re-worked all six drills and felt ready to start Wednesday with some chance for success. Wednesday started with the usual checks, blow-outs, etc. Mark Layne and Zack were in-chamber, Mick was outside, and Carolyn was recorder. We started with "5 of 6" and cleaned 15 sections today, bringing the total sections cleaned to 33 or 37.5 %(BSC = 88 sections). "5 of 6" now has a cumulative run time of 4+ hours. Drill 6 was tried but only ran for 3 minutes. Mark and Zack moved the compressor trailer out of the LEA in preparation for the BSC ISI tomorrow morning. Twelve new drills arrived today. Mark and Mick will start cleaning them tomorrow using the newly written procedure as a guide.
It's redundant to have a user's comment to another user's entry show up both at the top of the "news feed" and be attached to the original entry. Further, a useful model of the old eLOG was to add subentries with related but less important information. So I suggest one or both of the following: - If the desire is still to have the comment pull to the top of the "news feed," bring the whole main entry back up to the top of the feed, with the new comment attached. - Or, have the "comment" button create a "sub-entry" that doesn't pop up at the top of the "news feed," but merely attaches to the main entry. Either way, the comment / sub-entry should stay attached to the main entry, and that's the only place it should show up. (For an example, I had intended entry 967 to be a subentry to 966)
Fixed, comments are only displayed under their main entry.
Often times I would come to a work station, attempt to write an aLOG entry, and find that the web browser has someone else's ligo.org credentials in place (either from recent use or a stored kinit), and I have to close and restart the browser before continuing, or run kdestroy. One should have the ability to log out, or at least have a "Not You?" link that takes you to the home screen, clears the store credentials, and asks for new ones.
This is a known issue with the LIGO.ORG systems. It probably will not be fixed with the aLOG. There are two ways to fully log out. 1. Close the browser (all sessions). 2. Use kerberos, then after doing a kdestroy you can click the log-out button and it will actually log you out.
The clean air purge on BSC 4 needed to be relocated to allow HAM 10's iLIGO crossbeams to be removed. The valve needed to be moved from the flange on HAM 10 to the flange on HAM 9. The blank and the valve swapped places. Unfortunately the clean air purge on BSC 4 needed to be rotated to accommodate this. The conflat was replaced with a new one, and the flange has been flagged with a note that it needs a leak check.
BSC 4 purge air valve needs a leak check!
Scott and Ed meanwhile worked on removing the old stacks and jacking the support tubes. So the new HEPI piers will be able to be set tomorrow while the leveling of HAM 9 finishes.
Here is a comparison image of the new Accumulator Wet side made in Stainless Steel. They look very nice. Although the shop test fit 100% (they've done 25 of 160) EricA is putting together the first ones now and we'll confirm they are sealing well with N[SIZE=1]2[/SIZE]. We will install these new ones on the remaining three H2 Pumpstations on the mezzanine, the H2 Pump Station at the end station and reserve eight for BSCs 8 & 6 distribution manifolds.
Yesterday Spent time on tool autopsies, re-cleans, and re-assemblies. We did not find egregious hydrocarbons in any of the usual nooks and crannies. All six drills were reassembled, deemed ready for use since they all spun when turned by hand. Today Morning check-out of hoses, compressors, tanks, etc. Ran spin checks on all six drills prior to going into chamber. Four out of six drills appeared to work at the time (1, 3, 4, 5). However, when put under load in-chamber all but one failed to function. Apparently, drill 5 (also known as "5 of 6") comes from some foreign planet that allows it to run regardless of the severe abuse heaped upon it by the demands of aLIGO chamber cleaning. We will spend the afternoon working on tooling again. (We'll see whether we can figure out what characteristic "5 of 6" has that the other drills do not and we will play with the surgical drill.)We cleaned two sections today and determined that a "pouffy" brush works pretty well on chamber walls (gives a more uniform finish) and the LLO-designed chuck replacement and small cup brush combo works well close to the fins. We brushed two sections today, bringing the total sections cleaned in BSC-7 to 18 of 72 or 25% of the chamber.
A reviewed version of the handbook for the 200 W laser, which is going to be installed in October, can now be found at the DCC: LIGO-T0900641-v4 (https://dcc.ligo.org/DocDB/0008/T0900641/004/Operating%20Manual%20AdL%20HPO.pdf) You are welcome to send me your comments, if you have some...
Michael Rodruck, Jose Puente
Finished installing the acoustic panels in the PSL acoustic enclosure. Very quiet in there now.
The dust monitor at location 3 has a sensor fail and may need to be replaced.
Recovery from power outage on Sunday Scheduled: Work platform for cartridge install, fit check assembly around BSC 4 Cleaning of the LVEA ISI test stand area Grouting for optical lever test
Both the crossbeams for HAM 9 have been installed despite the fights for crane time. With the aid of Ed and Scott we were able to pass the crossbeam under the beam tube first by picking with a cradle lift from the center of the tube, then setting the crossbeam down on stands and re-picking with the spreader bar. For some reason the HEPI foot took even more adjustment to bring into alignment than usual. The North end frames are a little south of an optimal Position (a few 32nds of an inch).
Remaining is to install the clamps on the frame and torque the south end to spec. Afterwards the clamps will be torqued around the support tube and hopefully the support tubes can be shot and brought into nominal position.
Cleared error on Corner Station purge air compressor - OK now.
LHO had a power outage (not sure at the moment if it was just the corner station or site wide). Outage was 20 seconds long, from 08:10:52 to 08:11:12. All front end systems (H1 and H2) are down. H1 and H2 DAQs are down down, H1 PSL screens are white. old ilog, web login services are down. Rebooting and restoring systems now.
It turned out there was no dust monitor at MY to move.
