CIT Science Group (Weinstein)

The weekly report is a bit light this week since many of us are busy at the LVC meeting in Cambridge, MA.

__________

Antony Searle:

• At Chichen Itza GWBursts and LVC meetings.

• Omega online running, support and review tasks.

__________

Drew Keppel:

• At the LVC meeting and working on.

• Merging the postprocessing pipelines for CBC s6.

• Calculating an SVD based global detection statistic for LLOID.

__________

Kari Hodge:

• Attended the LIGO-Virgo Conference and CBC Face to Face meeting, where I presented on MVSC.

• Checked in a new version of mvsc_get_doubles that calculates ethinca (I also temporarily removed continous chisq because the calculation isn't quite correct, currently).

• Checked in new versions of mvsc_dag and mvsc_update_sql. Now the database files are supplied as a command line argument, not as a glob.

• Working on adding an injected distance cubed weighting to the forest training.

• Discussed using MVSC on triggers that come out of the Omega Pipeline with Jamie Rollins.

__________

Vladimir Dergachev:

• Worked with Joe on coherent followup pipeline.

• Preparation and travel to December LVC meeting.

__________

Kipp Cannon:

• Attending LVC meeting in Boston.

__________

Amber L. Stuver:

• Worked 4 8-hour on-call "shift" for the LOOC-UP EM follow-up dry run. This is was a time a very frequent hardware injections and kept us on our toes. I am also working with the rest of the LOOC-UP group on refining the sanity checks and procedures. The full list of event reports is located here: https://www.lsc-group.phys.uwm.edu/twiki/bin/view/Bursts/
  LoocUpEventReports.

• Continued working with the MatApps team to prioritize issues regarding MATLAB software and support needs now that the repository conversion from CVS to SVN has been completed successfully.

• Continued editing process for the APS FEd Spring 2010 Newsletter (the final edits, etc. is due the first week of January so that print copies are available for the "April" meeting in February).

__________

Igor Yakushin:

• Prepared and presented "Online burst trigger generation in S6" at the External collaborations plenary session at LVC https://dcc.ligo.org/cgi-bin/private/DocDB/
  ShowDocument?docid=7989.

__________

Chad Hanna:

• We opened the remaining s5 high mass boxes.

• I gave an update on imr.

• Kipp and I finished injection finding and false alarm rate codes for omega and cwb within the imr group.

__________

Anand Sengupta:

• Writing trigscan paper.

• Network covariance matrix code.

• Trying out different F+ and Fx codes in LAL.

__________

Cristina Valeria Torres:

• Worked on getting followup background generation ready on all LIGO clusters. (Demo configuration).

• Integrating the final piece of the followup into the main pipeline to make the entire followup process nearly seamless.

• Gave brief F2F status on our followup pipeline.

__________

Pinkesh Patel:

• Attended the LVC meeting in Boston and presented preliminary results of the Calvera Search.

Laboratory Computing (Anderson)

LDAS Software Systems (Maros)

• Work continues to understand the failures of the release candidate. As part of the effort, a new tool (bcheck) is being used to help identify memory issues on the Solaris platform. Several of the singleton classes in the general library have been modified to correct issues revealed by the tool. Efforts are now shifting to understanding why the reading of the binary frame cache file require 45 minutes instead of seconds.

• Using Solaris' debugging memory allocation package, libumem, the dev, test and cit systems have been running without failures.

LDAS System Administration (Anderson)

Caltech

(Dan Kozak)

• Fixed problem with the S5 L0 migration, once again running.

• Currently 8 9940 tapes are in the state "fully migrated, data needs to be md5sum'd" and 388 tapes are ready to ship.

• Helped with getting LLO C02 h(t) data flowing to CIT.

• Collected Sun case IDs for the various SAM-QFS shared client related kernel panics over the last few years.

• Got Sun to fix 1 broken T10KB drive and update the firmware on all of them.

• Got samhome2:/home2 performing metadata dumps.

• Updated office location in CIT's personal info.

(Phil Ehrens)

• Ongoing work porting all web services from Debian etch to Debian Lenny.

• Various tasks associated with down move.

• Various user support tasks.

• ALL IPSCA certs will expire on December 29th. I have started replacing all the IPSCA certs with startssl.com certs.

(Josh Abadie)

• Monitored and managed the cluster.

• Attempted to solve user problems.

• Started working on a new myligo - mediawiki plugin. About 80% done.

• Continued work on request tracker setup.

• Replaced some bad hardware on the cluster.

Livingston

(Igor Yakushin)

• Thumper1 lost power on Sunday. Probably a problem with UPS. Keith restored it and so far it is working.

• LDAS recovered fine after power outage.

• Finally got a quote from SUN to renew our support contract. I shall have a telecon with Ray on Monday or Tuesday to finalize it.

Hanford

(Dan Moraru)

• Coordinated with Jonathan to set up new Kerberos keytab for ldas-jobs so single sign-on would also work for non-Firefox users.

• Recovered supposedly damaged files off of tape and staged them onto nodes.

• Confirmed that AC is functioning normally and brought all nodes back online.

• Changed the way /usr1/frames is exported by nodes to avoid having to use "nohide" option, which reportedly is not always reliable.

• Resumed staging of data onto nodes and configured datacacheAPI to first look for files on nodes.

General Computing (Wallace)

MIT

(Fred)

• Setup and support for the LSCV and PAC meetings.

Livingston

(Dwayne)

• Replaced tapes in the GC tape library, ran full backup.

• Finished setup of the SB conf room PC, but still need some audio tweaks.

• Setup a new Dell PC for RGA scan.

• Patched/updated the iMac that is being tested for clean room setups.

• Wiki modifications for Mick.

• Attended a few other meetings.

• Worked a couple small procurement items.

• Numerous usual/unusual user support requests.

• Cleared spam trap daily.

Hanford

(Jonathan)

• Purchase battery for Keita.

• User support Dan Moraru, Greg Mendell, Jenni Murdock.

• Ordered some spare parts and batteries.

• Arranging a replacement screen for Fred's laptop.

• Racking spare x2200's to free up storage space.

• Clearing out old computers from my office.

• Confirming a bug in thunderbird when Kerberos is used, mail is not automatically check when using Kerberos. I've found the matching bug-report in the mozilla bugzilla and contributing to the dialog and will test as things develop.

• Removed old operator@ligo-wa… mail alias. Updating lho-ops list to reflect the current set of operators.

• Setup of some spare laptops for use while I am on vacation.

• Setup of a spare wireless access point.

• Documenting passwords and setup.

• Routine spam and dhcp work.

Caltech

(Veronica)

• Web support of the LVC meeting. Admin support of the PAC wiki.

• Continued to work on the DCC conversion.

• Updates of various LIGO/LSC related webpages.

(Mike)

• Worked on helping users with reconnecting their workstations and setting up their network connections.

• Larry and I did some pickup work in Millikan that was left behind.

• Setup printer, copier, and fax machine in Downs 3rd floor.

• Connected users that moved to printers located near their new offices.

• Pulled out additional network cables from our old offices Christian and my office. We left one network cable per office.

• Trouble shot a computer for Michael on Downs 2nd floor. This computer needed to be on the 113 subnet. I made some changes in the network closet to put scipe1 on the 113 subnet. I also connected a port in Jay's office.

• Made some changes in Rolf's office to get him connected to the 115 subnet. He will also need a 113 subnet connection.

• Moved Rudy over to his new office. Setup his network connections, and connected him to the printer in B/A.

• Continued daily work on the spam filters searching for false positives.

• Ran a network cable for Britta on W/B 3rd floor.

• Worked on a printer issue in Bridge Annex.

• Hook up John Z. to the LIGO network in W/B 2nd floor. There is one port that needs some work, for now it is a dead connection.

• Other misc. Onsite/phone user support & sysadmin tasks.

(Christian)

• Assisted users with varies different task this week after the move. Connecting computers, printers, scanners, etc.

• Mike and I moved to our new office this week.

• Larry and I tested EVO for the LSC meeting this week at MIT.

• Other misc.: Continued onsite software/phone support.

(Melody)

• DCC: User support: granting access (lots of these), removing files, answered questions Reworking the script which updates the DCC users list from the myLIGO roster. L-V meeting support PAC meeting support.

• myLIGO: Adding kerberos principals (especially for Virgo members).

• Misc office relocation (unpacking).

(Larry)

• Multiple purchases for different groups. P-card reconciliation, lot of paperwork needed to be tracked down.

• Assisted on move to new offices and related logistics work.

• Helped Fred out in the support of the LSCV and PAC meetings.

Distributed (Grid) Computing R&D (Blackburn)

Grid Application Development

Einstein@Home on the OSG:

• Continue production runs of E@H job submissions to 23(+4 from last week) OSG resources.

• RAC is up by 60,000 at 800,00.

• Cpu hours at ~60,000h/da.

• Utilize the GOC ticketing system to address issues on resource.

• Test GPU integration on magic.cse.buffalo.edu

• Work in progress to run at Fermilab, which requires changes to the submission script.

• Work in progress to migrate between x86 and x86_64 resources.

Binary Inspiral Application on Grids:

• Tested new feature in pegasus-get-sites "-p".

• Issue with gridftp discovered on Firefly cluster has now been fixed.

• New bug in Pegasus found this week a patch has been released and is being tested.

• Began developing a DAX for data transfers to OSG Storage Elements.

Open Science Grid Integration & Validation Testbed

• Drop in job submission due to the large number of jobs in the Condor queue for E@OSG on osg-ldg ( > 10,000 ) we were running into scaling issues with Condor. Changing application code to resolve this until new release of condor comes out.

Open Science Grid Documentation Project:

• Planning the February Workshop.

• Working on Web Preferences for the development Twiki.

Grid Management

• Continued discussion with OSG Council members for terms, election, support for term continuity between the Executive Director and Council Chairs.

• Reviewed an OSG paper draft being prepared for publication.

• Worked with USC-ISI to update their MOU's attachment Z to include a new hire that will be providing some support to LIGO in its use of Pegasus.

• Circulated the new attachment Z to the CompComm.

• Discussed recent drop in Einstein@Home jobs on the OSG with OSG Project Manager.

• Reviewed draft needs from LIGO for end-to-end information services on the OSG which was sent to the OSG VO Forum lead.

• Reviewed final version of OSG's WBS and gave input to the OSG Project Manager.

• Contacted John McGee of RENCI to arrange a meeting to discuss the future support and plans for the OSG-MM service LIGO is using.

• Discussed plans for February VO Software Development Workshop with organizers.

• upported the usual volume of certificate and cluster account requests from LSC.

EVO Enhancements for LSC/LIGO

• Reviewed Google Wave and inquired with EVO team if they were aware of this open source product and its features such as advanced chat and polling support. No word back from them yet.

• Informed the EVO PIs that the STCI PI workshop was open to all the PI in collaborative projects after getting news on this from the organizer. Currently scheduling a meeting to discuss this further.

Advanced LIGO and Supporting R&D (Shoemaker)

Advanced LIGO Management

From Carol Wilkinson

Project Controls

• Mike Landry and Brian O’Reilly are planning the detailed install plans. The goal is to have the de-install/install logistics and sequencing worked out by the end of this calendar year. They are working with subsystem leads to next link the subsystem deliverables to the install need dates.

Staffing

• Hiring continues with the 9 remaining open project and design positions.

Procurements

For Ed Jasnow:

• Reviewed the sales tax issue for items purchased in California and delivered to Caltech before going to the sites.  Jesus Ayala, Caltech’s tax expert from Financial Management, has reviewed the California tax code and has determined that there is no exemption in the regulations for items purchased in California and delivered in California, regardless of its final destination.  Therefore, items in this category will bear the full California sales tax expense.

For Steve Marroquin:

• Submitted RFQ for SI-149b “Ham Support Tube UHV Chemical Cleaning” to Dennis Coyne for final internal approvals.

• Issued purchase order contract to Varian Vacuum Inc. for Compact Turbo Pumping Station with Auto Vent Valve. (Tech Rep. Robert Taylor)

• DCC and Event Administration.

For Rudy Arvizu:

• No report this week.

For Jacqueline Champagnie and Gina Salone:

• SI 144; Storage Containers-Preparing Purchase Order.

• SI-141; Waiting for signed Supplemental Agreement signatures.

• Change Order for High Precision Devices in process.

Invoice Administration/Admin Support

For Jennie Murdock:

• Took over processing of invoices from Ruth Winstead.

Property Management

Rod Luna:

• No report this week

Progress Updates

• The monthly progress report for November was sent NSF on Friday December 18.

• Next progress update is due December 21. Subsystem leads need to ensure that the monthly reports are in before they leave for winter break.

• The December report will be the annual report to NSF on the Advanced LIGO Project status. Subsystem leads should send photos of tangible major achievements in the last quarter to David Shoemaker for inclusion in the subsystem accomplishments section of the report.

Meetings & Reviews

• The next Monthly Progress Reporting Meeting will be on Thursday, January 17, at 8:30 AM PT. Subsystem leaders or their delegates need to attend.

Advanced LIGO Systems

Modeling and Simulation

From: Hiroaki Yamamoto hiro@ligo.caltech.edu

Static IFO Simulation (Hiro):

• A new formulation of the stable cavity simulation can use smaller number of grid points of the FFT calculation, and the simulation can be accelerated by factor 10 or even more. A matlab code was written to demonstrate this, and a simple SIS run using the existing code with a special parameter set shows the same result. The code modification of the full implementation of the algorithm is under way. The algorithm and the net effects are explained in LIGO-T0900640.

Safety

From: David Nolting   dnolting@ligo-la.caltech.edu

• David Nolting was on travel this week visiting Caltech to meet with Bill Tyler and Peter King to discuss some research that has been ongoing regarding the R&D electrical requirements.  In the near future, the safety team will begin a dialog with Adl personnel to ascertain what requirements pertain to Adl and to identify equipment that may not be certified by a 3rd party testing organization, such as the Underwriters Laboratories (UL).

Quality Assurance

From: Mick Flanigan flanigan_m@ligo-wa.caltech.edu

ICS:

• At the beginning of this week we were down to working on 11 bugs in the system, and they were becoming less and less debilitating issues. As of today we are now at 3 bugs related to the bulk parts, and 2 are minor tweaks, one is a newly discovered issue. We will drive these 3 to zero, and deploy the system to our test server for testing. Once it passes that, it will be moved to production server and ready for normal use for bulk parts.

• Tom Gentry and I will be reviewing the remaining 50 issues reported to JIRA on ICS tomorrow, and clearing the fixed items, removing ones no longer applicable, and determining of the remaining, which are nice to have or new feature requests to bin, and which will be critical to fix before closing out this phase. We anticipate very few of the 50 items will actually remain after review, as most have been fixed but were not properly closed out.

QA:

• Performed an audit of a new machine shop with Mike Meyers this week, and we were impressed with the size, type of work they handle in house, and the general professionalism in house. The supplier QA program was mature and well run, and they were equipped to deal with our machining, storage, cleanliness needs. recommend they be added to our list of approved machine shops for future bids.

• I have completed transcribing ~25 test reports from the LHO HEPI Actuators, and am loading to the DCC. We will have over 140 more to do in the next few months. I did notice one of the transcribed HEPI’s had some readings that were overly out of normal range, and will address this with the team.

• Proposing new procedure for all machined parts to go through a first article CMM process, and include this in the RFQ packages. Still developing the scope and other requirements for this, evaluating cost and burden.

Schedule:

• Will be out starting the afternoon of Tuesday Dec 22nd until Jan. 4th.

• Plans in works to be at CIT with Doug Cook first week of January for parts inspections for the SUS team.

Facilities Modifications and Preparations

From: John Worden <worden_j@ligo-wa.caltech.edu>

VE Procurement:

• We held a review this week of the major technical documents associated with this RFQ. Mostly minor issues were pointed out and we have turned the event over to procurements. The hope is to issue to bidders the first week of January.

LHO:

• Parts clean and bake is underway.

LLO:

• No report.

Seismic Isolation

From: Ken Mason kmason@ligo.mit.edu

aLIGO Project Activities

SEI Activities and Progress at LHO:

LHO SEI Assembly (Eric Allwine, Jim Warner, Hugh Radkins):

• HEPI -- All ~65 actuators inspected, 41 more actuators received today. Still looking for bids for final plumbing parts.

• IS I-- Working up testing for Position Sensors, Cleaning/shipping UHV fasteners. Receiving first parts.

SEI Activities and Progress at LLO:

• Damping struts installation in HAM6 during the January commissioning break in preparation.

• HAM parts received: 13 support posts, 81 trim masses, 44 L4C chambers, 6 GS-13 chambers, 27 flexure rods, and 18 flexure cups.

• Cleaning and baking for first batch of GS-13 pods practically complete researching furniture, computers and tooling for clean room assembly.

• 1 HAM test stand almost completed.

• 2nd vacuum bake oven should be ready by Christmas break. ~Celine

SEI Electronics Design and Fabrication:

• The GS-13 socket boards and cables have passed their fit check at Stanford. Once they pass, we've sent 20 to Brian O'Reilly for installation in the pods. We sent 20 GS-13 PreAmp boards to LLO, as well.

• The prototype HAM ISI GS-13 Interface board has come back, and been stuffed. We just need two inductors to finish the stuffing, and we can test it.

• The layout for the AA Interface personality board for the HAM ISI system is finished it'll be sent out for fab soon.

• I've tested the STS-23 Breakout chassis for any noise contribution to the signal from the Interface chassis, and cannot measure any. Sam is taking data now, and we'll post some results soon.

• I've been working with Mohana on finishing up her Coil Driver for fabrication. ~Ben

Single Stage HAM Procurement and Build:

• The machined parts which were delivered with a surface finish roughness greater than our 64 microinch requirement were cleaned and baked at Livingston and passed RGA. The supplier was given approval to ship all machined parts for the first two HAM assemblies to Livingston. The two sets for Hanford will ship on 12/30.

• The GS-13 and L4C vacuum pods were shipped to LLO, The GS-13 pods were oily requiring additional cleaning labor. The L4C vacuum pods had black weld residue, ink markings, and some porosity in the weld. We are meeting with the supplier on Friday to discuss these issues.

• The first two sets of large plates are at Astropak, They will ship them after the holidays so that we know people will be available to unload the plates.

• All remaining HAM components are either in or on schedule for the first two ISI assemblies.

Two Stage BSC Design and Procurement:

• Design: Status of stage 2 redesign:Making final adjustments to design of large plates for Stage 2. ~Andy

• Testing: We're working low frequency tilt decoupling on stage1.

• Design: We're finishing Pods and large plates drawings. ~Fabrice

Suspension

Advanced LIGO Suspensions

From Janeen Romie and Norna Robertson ( romie_j@ligo-la.caltech.edu, nroberts@ligo.caltech.edu )

Reporting on the work of the SUS team: Jeff Bartlett, Mark Barton, Betsy Bland, Derek Bridges, Doug Cook, Jay Heefner, Matt Maxwell, Mike Meyer, Bobby Moore, Janeen Romie, Norna Robertson, Travis Sadecki, Danny Sellers, Josh Smith, Gary Traylor

Operations Work

HLTS Prototype:

• All parts are at LLO, cleaned and ready to be put back together, while taking many photographs to populate the assembly document. Still fixing helicoils.

HSTS:

• ~98% of the drawings done. They are being reviewed and DCNs prepared.

• Procurement: successful vendor visit regarding possible welding and machining work for the HSTS.

Blade Test Stand:

• Worked on completing the assembly of the test stand.

• Our summer student Robert was unable to come Monday, so we are working on rescheduling his visit.

Modelling:

• Mark finished writing up report on mechanical modeling of ESD cables for the quad and released it as T0900627-v1. All the candidate cable types identified are acceptable for the ESD wiring in isolation. Not able to test directly for compounding effects from many OSEM cables at the upper levels, but managed an indirect test by artificially stiffening the ESD cables there by a factor 10 and it was still OK.

HAM Auxiliary Suspensions:

• RODA for transfer of some mechanical WBS elements to IO has started circulation.

Project-funded Activities

AOSEMs:

• Finished writing up the report on the AOSEM thermal tests. Two prototypes with the same material specifications for volume resistivity test at much lower resistivity than they should. Also, there is variation in the resistivity between the two batches. Research ongoing about how to specify 30% carbon-loaded PEEK in a uniform way to meet our requirements. Research ongoing to determine why the resistance values are so low.

Quad Work:

• Clean and bake loads continue for QUAD hardware at LHO & LLO. Helicoiling continues in the background.

• Fastener shipments to LLO have been received.

Blades:

• We are modifying the electroless nickel plating section of the E0900023 document to reflect the use of ovens using closed looped air circulation without using HEPA or charcoal filtering.

Procurements

• Held meeting with Alan Wilkins to discuss suspension procurements.

Electronics:

• Drawings for the HAM2 Triple controls are progressing. All components have been added, but designators have not been assigned. We are discussing the placement of peek braid on the various vacuum cables. Will be looking at the quad prototype while he is at LLO next week. Will then try to make suggestions. Fibre Pulling Lab at LHO.

• This week we continued with modifying drawings to accept interface mounting for the corner cubes and targeting for the initial alignment. The fiber pulling lab now has the flow bench up on its support frame to allow the proof and bounce tester to sit underneath. The balance of the cabinets and tops are being installed today. We assembled most of the change room that supports the fiber pulling/weld lab and the ear bonding and COC lab. The water lines to the sink and chiller have been started and should be done early next week.

OMC SUS:

• Doug has been interfacing with the vendor on the OMC weldment QA issues. He and Mick will likely visit them and other vendors in January.

UK Monolithic Work:

• The video showing the transport of the latest test hang with welded fibres in place at Glasgow can be found on the DCC at G0901067. Further videos have also been posted : G0901078 - vertical mode, G0901079 - front to back shaking of the structure, stops backed out to ~1cm, G0901080 - side to side shaking of structure, stops backed out to ~1cm.

• The Glasgow team has supplied answers to questions raised by the ear final design and fab readiness review committee.

General:

• Variance report completed. Schedule progress update completed

Prestabilized Laser

From: Peter King <pking@ligo.caltech.edu>

Operations

• Added a few more VME-based IO cards for the PSL signals, with mixed success. I didn't get to add quite as many as I would like because of an issue with the base address settings of the cards.

• Another VME crate was setup with IO cards to monitor and control the temperature of the analyzer cavity.

Project

• Work on the Final Design Document draft continues. A fairly complete master document is together. Work continues on the supporting documentation.

• A telecon is scheduled for this Friday to sort out the issue of the height of the optical table. This was thought to be agreed upon earlier this year but apparently there's been a change of heart.

Input Optics

From: David Tanner <tanner@phys.ufl.edu>

Advanced LIGO Design

• We are finishing the determination of the HAM table heights and suspension spacer thickness based on ITM wedge tolerance. (Luke)

• We are drafting a RODA for holes in base of HSTS for goniometer wings and PRM translation rails. (Luke)

• There will be a telecon Friday about the PSL/IO table position.

Advanced LIGO Acquision

• We cleaned, assembled, and shipped the remaining optic containers to Coastline Optics. (Luke)

• We are addressing comments from the FDR for the IO substrate specifications. (Rodica)

• We finished the travelers for substrate shipments. We shipped the steering mirror substrates to the coating vendor. (Rodica)

• We awarded the polishing for the small recycling mirrors (PRM, PR2, SRM, SR2) and a purchase order is now in place. (Rodica)

Core Optics

From: GariLynn Billingsley <Billingsley_G@ligo.caltech.edu>

Rand Dannenberg:

• Vendor management and pursuit of action items on AdL coating contracts.

• Discovered an error in computation of supplied LMA ITM coating and cooperative iterations on the design between LMA and myself continue.

GariLynn Billingsley:

• Three core optics are complete and await final inspection at Tinsely, they will be modifying an existing Nomarski microscope to perform the final defect inspection. ASML has looked at a F-PR3 in their large Nomarski and found the finish to be quite impressive.

• The replacement ITM is being inspected at Heraeus and should arrive in January, this has no impact on the final schedule. The damaged ITM is to be shipped back to Caltech.

• The "doublet" coating that we would like from LMA may cost more if we need to stick to an October delivery for ETMs. If we allow the schedule to float so that they can coat all HR surfaces, then change to AR, the ETMs would arrive in January - which may be the need date for the single arm test. We're looking closely at the coupling before advising that we accelerate the doublet coatings.

Auxiliary Optics

From: Michael Smith <smith@ligo.caltech.edu>

Work Under Project Budget

OPTICAL LAYOUT:

• Mike is continuing to finalize the H2 and H1 optical layouts with the new, optimized locations of the optical lever beams.

Work Under Operations Budget

SLC BAFFLES AND BEAM DUMPS:

• Niem and Virginio are in the process of designing an elastomeric-damped suspension with vertical isolation blade springs for suspending the arm cavity baffle, and various other baffles and beam dumps from the HEPI and ISI structures in the BSC chambers.

• Heidy has completed a preliminary layout of the blade springs and mounting ring for suspending the cryopump/manifold baffle.

OUTPUT FARADAY ISOLATOR:

• Virginio has made preliminary transfer functions of the Faraday isolator suspension prototype, using the redesigned the vibration test fixture to restrain the vibrations to a single direction. The test is ongoing.

VIEWPORT:

• Mike determined the optimum location of the optical lever beams in the MC tube view ports at the input and output sides of the H1, L1, and H2 IFOs. Four different viewport configurations are needed for the MCA tube, and one configuration for the MCB tube. The viewport locations given to Craig need to be updated.

• Mike Zucker reports that Adapter A-17, the new adapter for the end manifold of the folded IFO has 12 viewports instead of the normal 6 used for initial LIGO.

From: Eric Gustafson <egustafs@ligo.caltech.edu>

AOS TransMon Group (Sam Waldman, Matt Evans, Jay Heefner, Mike Smith and Ken Mailand):

• Sam Waldman is continuing work on the TransMon table optics development.

• Ken Mailand has begun the detail configuration of the TransMon telescope assembly; and a suspension layout. Ignacio will detail the models for parts that are not foreseen to change going forward.

• Matt Evans is examining the current parameters drawing to determine if there is enough detail for his ongoing dynamic model work.

• Discussions are underway with Jay Heefner on requirements for the controls work.

Thermal Compensation System (Aidan Brooks and Phil Willems):

• We have begun moving into the new lab.

• The coating recommendations for the vendor are being prepared.

• The choice of wavelengths will be worked with the vendor and we will include a requirement on orthogonal polarizations for the two probe beams.

• We specify the injection paths (through SR2 for TCSY and off BS_AR for TCSX in the unfolded interferometer) and we will require the Beam Splitter HR transmission to be large enough to reduce cross-sampling to less than ~1%.

• We have continued interviewing candidates for the ME position.

• In discussions about the Hartmann Sensor camera with Adelaide it was decided that we should request a slightly earlier FDR for the Hartmann sensor camera due programmatic issues at Adelaide University.

Optical Lever (Tara Chalermsongsak, Eric Black and Riccardo DeSalvo):

• Mike is designing optical wedges, pylons, boxes, and structures and we will get bids shortly on some of these items.

• Tara is switching to the spare laser and has ordered a superluminicent diode to try a lower temporal coherence source.

• Mohana is building a new split quadrant PCB board for the Hamamatsu and the GaAs diodes, as well as a connecting PCB for the superluminicent diode.

• Eric Black is updating the work schedule.

Control and Data Systems

From: Vern Sandberg <sandberg@ligo-wa.caltech.edu>

PROJECT

aLIGO DAQ:

• Documents submitted to DCC for DAQ procurement review. Main doc is T0900612, which is a CDS overview with links to other docs.

• Starting on DAQ review presentation.

• A design description of the IO chassis has been completed and added to the DCC.

aLIGO AOS:

• TCS - Collecting requirements for controls.

• Optical Lever - Working on the ASC Optical Lever Photodiode Amplifier, replacing it with the Hamamatsu S5981 Photodiode.

Additional Reports on Activities in CDS

aLIGO ISC:

• The final version of the I/Q demodulator has been received and is being tested. A quick check of the functions show's the board is working very well. The useable bandwidth spans 5 MHz to 150 MHz, with no component changes.

• The data for the ETM transmon diode is complete, and is being put together for Peter to review for completeness prior to review.

• The design process has begun on the ASC/LSC whitening chassis. Some target specifications have been set.

For additional information about this report, contact Albert Lazzarini