Crew: Mark L., Mick, Carolyn
Mark and Mick prepared tooling ("5 of 6" and "4 of 6")and then ran start of the day checks. John W. came out at my invitation and 'bunnied-up" to go into BSC-7 to assess the quality of the brushing so far and give us some idea of "good enough". John is generally satisfied with the cleaning, agrees that the round brush gives a smoother finish, and thinks that the sections cleaned with the cup brush are probably OK as-is. Mick took an FTIR at section M-9 and then Mark started cleaning that section. Two minutes into the run, "5 of 6" seized due to a small bearing failure. (Fortunately, extra bearings and end plates arrived Friday!)"4 of 6" was then put to work.  Mark took pix of the iLIGO dust barrier for Bubba. The brushing of the three remaining mid-section areas was completed with "4 of 6". The guys also hand-worked various areas that the air drill cannot reach (close to the support tubes and fins). Dome and door covers were replaced and end of day checks run. Mark and Mick spent time late this afternoon dis-assembling and cleaning new drills and bearings.

Since a number of the 227b dust monitors have been alarming with "sensor fail" recently, I've started trying to get the external pump in the mechanical room running again, so that I can use some of the ones that have their internal pumps removed. I had stopped my previous attempts when the pump seemed to be running too hot. So far I have only been able to replace the dust monitor at the H1 PSL (location 10). After going back and forth between the LVEA and the mechanical room to adjust the valve on the pump and check the flow rate at that dust monitor, I got a reading of ~.1 cfm. However, the flow measured at the dust monitor in the H1 electronics racks (location 8) was less than .1 cfm. I do not know why the flows differ and I have left that dust monitor turned off. The flow rate the H1 PSL dust monitor should probably be rechecked. These are the only two currently connected to the external pump. Since I wanted to make sure that there wasn't some unused connection that was not blocked, I traced the hose out in the LVEA as much as I could. Since it was unused, I disconnected and plugged the connection on the hose manifold that led to the previous locations of ISCT 10 and the H2 electronic racks. I have also removed the flow meter from the hose next to the pump in the mechanical room, since I do not trust its readings, and therefore thought there might as well be a clear line there for now. I have also replaced the exhaust filter on the vacuum pump with a tee. The pump seems to be running alright at this point. The valve on the vacuum pump is set so that the gauge reads 350 mmHg VAC.

The fit check of the work platform continued around BSC-4 today. The hand-rails were in place and Dale Ingram used the platform to advantage while filming the BSC ISI flight. I sent work platform pictures off to Brian O'Reilly so that he could send back questions. John and Bubba both plan some careful measuring on Tuesday, 05 July, as HEPI actuators and the chamber cleanroom must be taken into account to determine if changes are needed.

Randy and crew worked on the relocation of many items in the West Bay to provide better passage around the test stands and their cleanrooms. Two ion pumps were moved to the termination slab, two HAM doors were moved over by HAM-11/12 along with the rectangular 4-point spreader-bar. Once space was cleared, they picked the Fiber Welding cleanroom and placed it to the west of the Test Stand 2 cleanroom.

Just as the ISI was exiting the Staging Building, Test Stand 3 arrived from MCE. It was delivered to Y-end and unloaded by Mark Dodson and Slim. Some parts were placed in the first airlock and some were placed in the second airlock. While I was at Y-end for a brief inspection of the parts (uneventful but I'll take a closer look on Tuesday), Mark, Slim, and I talked about reorganizing things a bit (moving the refrigerator out of the entry way, where to put the two tan cabinets, could cleanroom parts be consolidated and stored) I looked at the Type A (Test Stand) and B (Work Space) cleanrooms that Dave, Nicole and Kevin have been working on. The Type B nests very nicely under the Type A which is good news. 

The chamber cleaning crew (Mark Layne, Chris, with Carolyn as recorder) was in BSC-7 this morning, and using the indomitable "5 of 6" air drill, cleaned eight more sections. They also touched up around several fins. 46.59% of BSC-7 has now been cleaned. Mick worked on the other five drills throughout the morning and made a couple of modifications. Tyler Guidry worked on fabricating the first of our chuck replacements. Mark and I went back into chamber after lunch to fit check the prototype bellows vacuum attachment (too thick, suction vents on ID rather than on OD, handle overly long for application). We also examined the quality of the finish left by the large rounded brush vs various cup brushes and tried to determine a path forward for the lower part of the chamber (when to remove the flooring, do we need some flooring in place to remove dome cover, safety implications of partial flooring, etc). I took a few pix for documentation, then we replaced the dome cover and door cover. Mick performed the end of day checks and blow-outs. Mick and Mark moved the compressor trailer back into the LEA and Mark ran a few test with a drill that Mick had modified earlier in the day.

• Kingsoft water onsite, checking RO
• Well maintenance
• BSC ISI moved to test stand
• Misc. power outage recovery: TCS chillers had to be restarted, tried to restart H2adcumy/x but could not due to RFM issues

(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!)

The Advanced LIGO Project's FIRST BSC ISI Assembly has been completed, initially tested, moved from the Staging Building and installed in an LVEA Test Stand!

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:

https://ligoimages.mit.edu/?c=633

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!  :::::

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)

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.

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.

Further prep work today at the HAM5 north door for squeezer modifications to HAM4 beam path.
HAM HEPI assembly.
BSC7's turn at chamber cleaning nonsense.
Staging and prep work for transmon assembly at the EY lab.
The usual Tuesday vendors (Unifirst, Praxair, Paradise Water).

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...

• Chamber cleaning in BSC7
• Squeezer racks moved into position
• Septum window from HAM6 installed in HAM4 for squeezers - table will be moved into place tomorrow
• Patrick moved dust monitor from MY to MX
• Powercycled and restarted H2adcumy
• Pcal box removed at MX