First vacuum was completed. Wipe down progressed through the upper chamber, upper fins, lower fins, and ring. That leaves only the chamber floor to be wiped down. By tomorrow, I expect that second vacuum will be finished and inspection can begin. That puts us on pace to be out of the chamber by Thursday at the earliest and Friday at the latest. (Go team!)

SUS work on BSC8 test stand
Electrical work on air conditioning for electronics building is nearly complete.
delivery pickup
Unifirst delivery
Praxair delivery to CP8
Filiberto made cable length measurements in the LVEA
Michael R. changed H1 PSL dust monitor to the new Met One 6000 series model. I updated the code again.

Plots of dust counts > .5 microns attached. The dust monitor at location 7 (near the previous location of the H2 electronics racks) seems to have disconnected. The dust monitor at location 6 (the H1 PSL diode room) has been disconnected for about a week or two.

BBland (for Bartlett, Sadecki, Ramirez, Garcia, Cook, etal.)

This week, the crew:

1) Made the M0 PUM loop.
2) Prepped the M0 chain via moving it to it's parking spot in the LVEA fiber room where it won't be moved for the next few weeks while the monolithic build takes place. Also, we mounted the triple hang tooling and Doug started to setup IAS to look at the hanging dummy PUM.  Note, the TM is still removed so we'll take this first pointing fiducial with the UIM and PUM only hanging (no TM), which is the same state we will restore when we swap in the glass PUM and it's wire loop.
We still need to finish leveling the setup before Doug's first look.
3) Laced the FMy cables (D1000234-125" s/n 900, 901, 902) up the structure and PEEK xip-tied them.  
4) Mounted the newer, functioning version of the pseudo feedthru to the test stand and connected the rack cables.  

We still need install the SRS cables between the 125" and feedthru, which will takes some fussing to mate to the ISI properly.  We'll broker with SEI for more time and guidance on this.

5) Assembled the beginnings of the Table Cable Brackets (3 for this table).

6) Gerardo continued measurements of the crooked ITMy TCP (CP09) in an attempt to find a path forward to gluing the SST prisms onto it.  He reports that this is challenging...

Praxair delivery driver left pressure relief (economizer) circuit closed -> I opened after noticing abnormal response to today's delivery -> expect an alarm tonight for low pump level. 

The update is completed.  One change worth noting, it is possible to bookmark a search by section/task. Go to the 'Help' task and view the entry 'Filter Shortcuts' to find current bookmarks. Please note, the structure of the tasks and sections will change, so these bookmarks are temporary (for now).

By Mark Barton for Travis Sadecki and Sam Barnum

We did a form/fit test of the ECD tooling designed by Sam Barnum. The tooling was assembled dirty and bolted to a clean LSAT using foil to prevent cross-contamination. 

All the adjustments had plenty of range and were easy to use.

Next step will be to dismantle, clean to Class B, and test against a hanging three-mass system.

A work permit was pulled for moving cleanrooms and staging around HAM-7/8. Christina completed an assessment of cleaning needs. The Apollo crew will work on covering up the newly poured concrete in the area with Ameri-stat so that the exterior wipe down of the chamber can begin. Bubba and Hugh are making plans to remove the support table from HAM-7 because we cannot clean the chamber with the table in place. Staging of the compressor trailer and accompanying what-nots will start ASAP.

The crew started first vacuum and finished the upper chamber including the bellows and support tubes.  They started on the lower chamber but did not complete it today.

Today's Activities:
rotation of FMY in LVEA 
SEI team down at End-Y
Vacuum work with Gate Valves near BSC8 - Kyle

11:30 - delivery from NorCal electric

1:30 - contractor to see Rick S.

Two medm .adl files were edited to correct a naming discrepancy in the "SUS_CUST_BSFM_M1_DRIVEALIGN.adl" and "SUS_CUST_BSFM_M2_DRIVEALIGN.adl" medm files that incorrectly labeled the channel names of the first column in each as:
"H2:SUS-FMY_M*_DRIVEALIGN_M3L*" instead of "H2:SUS-FMY_M*_DRIVEALIGN_L2L*"

These custom medm files are located in the directory '/opt/rtcds/lho/h2/userapps/trunk/sus/common/medm/bsfm/'.

The aLOG will be undergoing a minor update 10am pacific time tomorrow (13 Sept 2011).  The update is expected to be done in a matter of minutes.

If you are working on an entry please either post it or save it to a draft before 10am tomorrow.  Users will be required to authenticate again after the outage to post entries.

Summary of updates:
* Bug fixes on the administrative screens
* Some changes to how comments are displayed
* Update to the paging display to make it easier to spot the current page
* Some changes to attachment names
* Initial support for CDS robo-posting scripts
* Initial support for passing in search filters in the url.  This will allow bookmarked filters (ie show only SUS ...)

Report for 08-09 Sep 2011

The crew worked on the staggered lunch schedule on Thursday and Friday. They made such good progress both days that the brushing of the chamber was completed on Friday afternoon. That means vacuum-wipe down-vacuum can start Monday. Air drills continue to be problematic, with the success rate (running for 1/2 hour without issues)dropping below 50% on Friday. We made garb kits for the crew to use next week so that work can continue unimpeded.

Planning and staging for the return to the LVEA has begun. Christina will assess cleaning needs around HAM 7-8-9 on Monday and report back. Apollo will move a cleanroom over HAM 7-8 ASAP. The crew will start bring the compressor trailer, etc. back from Y-end on Monday as well.

*BSC-7 FTIR re-test results came in this week. ALL readings were at or below detectable! The consensus seems to be that the big hit on the first set of FTIRs was a false positive.

Cardboard container changed
2 deliveries for Richard
TCS ring heater installation on lower SUS structure for BSC 8
Disassembling clean room at mid X
Transitioned to laser hazard early for squeezer work on full locking of H1 IFO

Plot of > .5 micron dust counts attached. Note elevated levels in Bake-out lab (H0:PEM-LAB_DST3_5).

I updated the TCS RH model to include calculations of the power as a V*I, as R_th*I^2 (where R_th is the measured resistance of the RH before it is installed = 35.8 Ohms per segment for ITMY) and R = V / I.

The model was compiled and installed. I also updated the H2TCS_ITMY_RING_HT_CUSTOM.adl screen to show the new channels. All changes were added to the SVN.

The medm screen is attached below:

Steve O'Connor, Aidan Brooks, Christopher Guido

Wednesday night, we made a series of resistor changes to the S1103182 chassis(on both boards S1103183 and S1103184)which can be seen in yesterday's post, but today, we reverted the resistors back to the original values except for R44. These changes will be uploaded to the traveler. 

Afterwards, we tested the board (results attached as excel spreadsheet) and used the results to calibrate the H2TCS-ITMY_RING_HEATER screen. The changes to the gain and offset(in the filters) are listed below

H2TCS_ITMY_RING_HTR_SEG1_I_MON 
Offset = -3.22 counts
Gain   = -0.0247 mA/count

H2TCS_ITMY_RING_HTR_SEG2_I_MON
Offset = -7.135 counts
Gain   = -2.456e-2 mA/count 

H2TCS_ITMY_RING_HTR_SEG1_V_MON 
Offset = -145.2 counts
Gain   = 1.281e-3 V/count

H2TCS_ITMY_RING_HTR_SEG2_V_MON 
Offset = -129.9 counts
Gain   = 1.364e-3 V/count

(Corey, Greg, Jim)

Unit#2 CPS Swap

Have swapped out the Capacitive Position Sensors (CPS) on Unit#2; originally-installed ones had bad flux/solder.  All of the new CPS's were installed with the ISI Locked and we were able to get voltages (read off Voltmeter) under 0.2V [most were close to ~0V];  note:  these voltages were observed to change when one touched various Stages and when the System was Unlocked.

When installing these Sensors, we observed that 1 of the 12 had issues (the voltage remained max-ed at ~13V no matter where the Target was located); this is a Fine-range Sensor.  This one was swapped out for a spare & it was installed and operational.

After the CPS's were installed the system was Unlocked.  Vincent will now check on the functionality of these Sensors.

Here is information for the CPS Probes & Boards/Gauges:

Unit#2 Cables Inventory:

Here are the drawing numbers used for Unit2 in-vacuum cables (except for the CPSs):

Corner1
Actuators

GS13:  D1000221 -100
L4C:  D1000221 -100
Trillium:  D1000221 -100

Corner2
Actuators

GS13:  D1000221 -100
L4C:  D1000221 -100
Trillium:  D1000221 -100

Corner3
Actuators

GS13:  D1000221 -100
L4C:  D1000221 -100
Trillium:  D1000221 -100

The aLIGO TCS team has completed installing a pair of ring heaters on the lower SUS structure for BSC8.
Electrical compliance testing was passed. 
Three of the four cable sub-assemblies (indentured to D1001517) are tied to the lower structure. 
The fourth cable sub-assembly (D1001521, indentured to D1001517) has been secured to the box frame that mates the lower to upper structures.