The LIGO Executive Committee Agenda for Monday, March 5, 2007 will be:

(Meeting time: 10:30 am Pacific Time)

1. Announcements

2. Programmatic (Marx)

Virgo status (Lazzarini)
LIGO Continuing Operations Budget Proposal Outline and Suggested Writing Assignments (Lindquist)

3. Comments on Weekly Report

4. LSC and Data Analysis (Saulson)

5. LIGO Lab Operations

Administration (Lindquist)
Sites (Raab, Giaime, Shoemaker)
Commissioning (Fritschel)
Optical and Mechanical (Coyne)
Control and Data Systems (Bork)
40m (Weinstein)
TNI (Libbrecht)
LASTI (Ottaway)
Lab computing (Anderson)
Science Group (Weinstein)

6. Enhancements (Zucker)

7. Advanced LIGO (Shoemaker)

8. Change Control Board/Technical Review Board Session as needed

There are no open change requests

Main meeting anjourns

Site and other business issues (as needed)

LSC Issues (Saulson)

Peter Saulson and Dave Reitze are working to coordinate the hand over of Spokesman's duties, which will take place with the close of the 19-22 March Collaboration meeting.

Gabriela Gonzalez has taken on the task of coordinating the schedule for the March meeting. Working Group Chairs or others organizing sessions at the meeting, please be sure that your schedules are sent to her.

LIGO Laboratory Administration (Lindquist)

STATUS OF LSC MOUs (Lloyd)

MOUs Requiring Revisions	Routed for Signature	In Process	Complete/Posted
ACIGA (rec'd - out for review)	GEO	Columbia	Balearic
Carleton (need rev "Z")	IUCAA	Florida	CaRT
Goddard	LaTech	TexasB	Embry-Riddle
IAP	NAOJ-TAMA		Hobart
MoscowS	Wisconsin		Loyola
PennState			LSU
Rochester			Maryland
Sannio			Michigan
TexasA			Northwestern
U. of Washington			Oregon
			SLU
			Southern
			Stanford
			Syracuse
			Trinity
			Washington State

PROPERTY MANAGEMENT (Luna)

>From: Rod Luna <rluna@ligo.caltech.edu>

Worked with our broker and Ken Mason in making shipping arrangements for nine large aluminum parts to Galli & Morelli in Italy. Account Number LIGO.BSCCH-5.18-NSFLIGO.FY02CA.
Working with GSA Fleet Services in LA to resolve issues concerning the 2004 Chevrolet Impala.
Tagged and created property records for the Output Mode Cleaner 40 Meter Fabrication. Account Number LIGO.AIFOF-5.6.1NSFLIGO.FY02CA.
Provided assistance to Dale Ingram (LHO) in shipping a Laptop and a Network Analyzer for the Outreach Program.
Continued working on LIGO's Equipment Inventory @ CIT.

DOCUMENT CONTROL CENTER (Turner, Mak)

>From: Cleveland Mak <mak_c@ligo.caltech.edu>

The sub-basement storage move is now complete.
Continued to process 2006 Travel Expense Reports.
Scanning Update - Progress continues on scanning of miscellaneous large/bulky "C" documents on file.

Update to Current Document Management System (Lindquist)

The committee met on February 23. The next meeting will be March 9, 2007.

Both David and Joe have managed to get accounts on DocuShare and DocDB respectively, and Joe has exchanged email with author of DocDB. Eric, the author of DocDB, is perfectly happy to go through the whole review and selection process with us again. He provided an account on a test DocDB system.

David has an account on the IceCube DocuShare system.

Google has a facility for making custom search engines. Rana has done a test that accesses LIGO document places. It is possible that something like that will be useful.

Next step, Joe, David, Dennis will explore the test systems to see if they provide the needed capabilities, and try to get some idea what it would cost to set up a system.

FINANCIAL SYSTEMS (Funaro, Brambila, Kaufman)

>From: "Funaro, Catherine" <Catherine.Funaro@caltech.edu>

For ACCOUNTS PAYABLE HISTORY Press Here.

>From: Florence Kaufman <fkaufman>

Received two new Fabrication Equipment Requests for AOS systems.
Met with Carol Wilkinson and Mike Zucker to review budgets for ISC and SUS systems and to determine portion of funding for these systems from AdLIGO, Enhanced LIGO Budgets, and Operations Budgets.
Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport. (For passwords contact Florence)

SUBCONTRACTS MANAGEMENT (Jasnow, Salone)

>From: Gina Salone <gsalone@ligo.caltech.edu>

Resolved a discrepancy between PNNL and Caltech over the payments for internet transport services provided to LHO. PNNL alleged that they had not invoiced for those services for FY06, but a search of the records indicated that they had invoiced and been paid for those services. After reviewing the records, PNNL acknowledged that they had been paid. They have not, however, invoiced for the FY07 services.

>From: Ed Jasnow <jasnow@ligo.caltech.edu>

Both contracts for the Pathfinder optical polishing effort for Advanced LIGO have been executed by Caltech. The optical substrates for each contractor to polish and measure have been shipped to them. The first kickoff meeting is scheduled with CSIRO on March 9, with the second with QED scheduled for March 27.
The Contractor Procurement System Review (CPSR) on the Caltech purchasing system from the Office of Naval Research has been sent to the NSF. This will help determine the level at which they will review procurements on Advanced LIGO.

PROPOSALS and REPORTS (Lindquist)

LIGO is preparing a proposal to the NSF for Continuing Operations for FY 2009 through FY 2013. I have prepared a "straw man" outline and suggested writing assignments for the proposal. The due date for the first draft of the text will be sometime in June. This proposed outline and the suggested assignments will be a topic of discussion during the meeting of the LIGO Executive Committee scheduled for Monday, March 5, 2007.

CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)

There are no open change requests.

HUMAN RESOURCES (Akutagawa)

>From: Cindy Akutagawa <cindy@ligo.caltech.edu>

A Staffing Committee meeting was held on Monday, February 26. The minutes and action items from that meeting are in progress and when completed will be posted on the SC web page

Prepared numerous appointment and reappointment memos for various Visitors, Post Docs, and Term Staff

Quality/Safety (Tyler)

>From: Bill Tyler tyler@ligo.caltech.edu

This week safety meetings were held with LIGO AdL Project personnel and an outside laser safety expert to review and discuss AdL safety requirements and plans.

A tour of the 40M and other LIGO labs was also done with the laser safety expert for his assessment of LIGO's on-going laser safety program.

A LIGO Safety Committee has now been established to help provide comprehensive safety oversight and assessment. It is planned to conduct the first meeting of this safety committee in the next week.

LIGO Hanford Observatory (LHO) and Interferometer Operations (Raab)

Summary of S5 Activities at LIGO Hanford Observatory (compiled by K. Kawabe)

Despite several windy days, it was a good week. Duty cycle (Thu Feb/22 to Wed Feb/28 2007) of H1 was 88.9 percent with 14 - 15 Mpc inspiral binary range. For H2 it was 83.7 percent with 6 - 7 Mpc range.

Summaries: Range and Duty Cycle update. Tuesday maintenance summary.

Highlights from the LHO elog are listed below:

Strange broadband noise appeared in H2 with apparent wobbling of the beam position in the arms and on WFS DC pointing. It is cured by unlocking and re-locking the IFO, but it comes back once in a while (sometimes twice or three per day, sometimes none). It seems that both the 1.2 Hz BSC stack resonance as well as something at 0.78 Hz are excited, and the beam spot motion is common (perfectly in phase, in the same direction) to both of the arms.
H1 TCS code change mentioned last week was implemented. Looking at the TCS channels it was definitely improved, but analysis from glitch group is yet to come.
Analysis of test mass absorption for H2 using drumhead mode was posted, but the error looked greater than hoped. People are now looking at higher resonances using fast channels for H2 as well as H1, which looks very promising.
H1 ETMX bias module power supply once tripped while down script failed to run. Down script was fixed, but we don't know exactly what happened.
After Tuesday maintenance, a bunch of DMT problems was found, which was apparently solved by backing off new DMT code that was slipped in earlier.
DST patching continued this week.

LIGO Livingston Observatory (LLO) and Interferometer Operations (Giaime)

S5 Run Summary (Brian O'Reilly):

We were in Science Mode ~76% of the time for the last week, in spite of high anthropogenic ground noise near the X-end and LVEA. Further improvements in the tidal servo seem to have increased our stability and Inspiral Range. We had high micro-seism for most of the week which washed out our range to between 12 and 14 Mpc. However with the tidal improvements and lower micro-seism our range has increased to around 14.5 Mpc and stabilized.
The main activity during Tuesday maintenance was installing DST patches on the CDS machines. This went very well and we only have a couple of systems left to patch.
The ETMY optical lever laser has started glitching and will be replaced. Next week we plan to replace the ITMY optical lever laser with a more complete version. The current one lacks intensity stabilization

Safety & Security (Rich Riesen):

Completed the CIT requested property inventory.
In process of updating all authorized user signage (Laser Operator, Machine Shop, Wood Shop, and Equipment Operators).
Updating LLO Emergency Action Plan.
Working with Bill Tyler (LIGO Safety) for the upcoming LLO safety audit.
Replaced 4 faulty swipe cards.
Found no Laser/Site safety concerns this reporting period.

LLO Outreach (John Thacker):

Prepared program for teacher Professsional Development (Math/ Science Partnership)
Presented material at Math Night for middle school students in Baton Rouge
Prepared and presented program for 50 HS physics students from a school about an hour west of LLO
Prepared and mailed pre-visit packets for the groups in March and April
Arranged materials for SPS group visit on March 10th
Met with Director of Livingston Parish Literacy and Technology Center to explore possible partnership
Made initial arrangements to host 1 day of a 5 day summer astronomy workshop presented by Tufts
Conducted docent training with 9 students from Southern University

CDS Computing (Lisa Bogue):

Patched the vast majority of cds machines for daylight savings changes. I still have 10 machines left to address.
Built a new server for the ilog. This will put the ilog here on the same hardware as LHO and moves us in the direction of having a standard ilog server configuration at LLO, LHO and CIT.
Did another round of testing on my sol10 configuration script. I have a couple more changes I need to roll into that.
Continuing S5 support.

LIGO computing and network security (Roddy)
-------------------------------------------------------------------- Reported under General Computing, see below.
General computing and LDAS admin (Giardina)
---------------------------------------------------------------------
Reported under General Computing, see belowReported under LDAS System Administration, see below Data analysis & computing (Yakushin)
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Storage/Condor/LDAS admin:
Reported under LDAS System Administration, see below Data analysis:
Reported under Data Analysis activities, see below

Mechanical and Optical Systems (Coyne)

See Advanced LIGO

Controls and Data Systems (Bork)

See Advanced LIGO

40-Meter Interferometer (Weinstein)

Comings and goings:
- Kirk is off to LLO next week, then back home to ANU (with a short stop in California). As a goodbye present, he supplied the group with some outstanding sugar napoleans during our group meeting. Thanks, Kirk! Come back soon!
IFO commissioning, DC readout, Electronics, controls, computers:
- Osamu noticed that XARM lock was unstable, and he narrowed it to the ETMX oplev servo. Rana noticed that the oplev laser (an old HeNe, installed last month) was dying. Steve replaced it with with spare, and is planning on buying new ones, from JDS. He'll start with one, and measure the intensity noise to see if it's suitable. The ITMX side osem damping has never worked well, and is rather strongle coupled to POS. and Rana is complaining that it is hampering lock acquisition work. Osamu has been diagnosing it. He can get it to damp well by turning the gain up to 1e7. Something is probably wrong with the electronics / cabling. Work in progress. Royal has completed her work on modifying all the oplev whitening boards on all 4 test mass suspensions. The boards were tested before and after installation, The noise spectra were dominated by ADC noise above 10 Hz; now 1 kHz. Rana modified the ITMX and ITMY oplev filters. The loop gains are now higher; ~5 Hz instead of 2 Hz. And the filters give ~10 dB less noise from 20-100 Hz. Also there are new HVAC filters in both to account for the frequency shift in our AC motors. Tobin calculated the round-trip cavity losses from the measurements he took last week: x arm: 228 ppm; y arm: 187 ppm. This isn't much worse than at the sites (~ 150 ppm rond-trip losses, according to Bill Kells), but it unacceptable for the high-finesse arms at the 40m (and AdLIGO). A great challenge for the AdLIGO core optics team! Tobin has been thinking about how to commission our new auto-dither-alignment system. Sam plans on exciting the "pringle" mode of the LLO test masses in order to study Barkhausen noise and upconversion. This requires modifications to the front-end SUS controller code. He wants to test these mods at the 40m. Tobin has been working on AdLIGO TCS design and modeling with Phil.
- Our new controls laptops now can see the wireless network, thanks to work by Rob. Still need to configure them correctly to run controls software.

IFO modeling:

Kirk has been learning about, and modeling, the proposed new AdLIGO control scheme (9/45 MHz), and is thinking about ways of implementing the scheme at the 40m.

DC detection:

The timing slave module for the OMC controls failed. JayH replaced it with a new one, and the OMC controls are now working.
The OMC controls were having a variety of problems associated with the test point manager, probably exacerbated by the timing slave problems. Rob is waiting for Alex to return, to help find and fix the root problem.

Vacuum squeezing:

Osamu and Go installed a second Faraday rotator to suppress the optical feedback from the interferometer to the OPO cavity. It worked pretty well and they were able to lock the SRMI with DC-locking of the dark port field using the MICH offset. Now with this stable DC power, we were able to measure reduced interferometer noise (at ~ MHz frequencies) with the injection of squeezed vacuum, with more accuracy and reliability. About 3dB of reduced noise due to squeezing was observed. They can now noise-lock the squeezed vacuum phase more stably, to observe broadband noise reduction. They are working to establish the frequencies where interferometer noise is dominated by quantum shot noise.
They measured the noise floor of the signal recycled michelson (SRMI) at various input powers, and concluded that they were seeing quantum-limited shot noise above ~ 40 kHz. There is lots of excess broadband noise, and lines, at lower frequencies. They managed to shake the ETMs at 50 kHz (using analog inputs to the coil drivers) in order to crudely calibrate the spectrum.

Lab Infrastructure, Bake lab:
- Ken Barat, Advanced LIGO Laser Safety Consultant, got a tour of the lab and its safety procedures. We tested our PSL enclosure interlock: when the door opened, the laser was automatically shuttered, as desired. When the door was closed, the laser automatically un-shuttered - not as intended! We'll get the Abbotts to fix this.

Thermal Noise Interferometer (Black)

As you may recall, our most recent measurement, of a doped-tantala coating, showed a significantly lower noise floor than the Q measurements predicted. We have been working to verify our calibration to see if the error lies with us, and the latest things we have been checking have been the laser spot size and cavity length. Akira has calculated the cavity length, based on the dimensions of the suspension barns and taking into account the wedge and concave surface of the mirrors. Greg has been measuring the spot size outside the cavity to determine the spot size on the mirrors, or the waist size inside the cavity, which is essentially the same thing.After a few false starts, they have both come up with numbers that are within a few percent of what we expected. Akira finds that the cavity is slightly longer than 1cm, mostly due to the shift in the center of mass of the mirror that the wedge introduces. This change is quite small and, according to our calculations so far, does not affect our calibration enough to account for the discrepancy with the Q predictions. Greg finds that the spot size is also almost identical to our original estimates.This is very preliminary, and we are checking our results by other methods. It's important to get this right.

LASTI (Ottaway)

HAM SAS

This week we discovered that the central post to which the tilt degrees attach to was loose, possibly from shipment. After some contortions that a yoga master would be proud of we managed to tighten the bolt down and secure the central post. This instantly made a significant improvement to the stability of the system and removed all traces of bi-stability from the vertical degrees of freedom.

In addition to this the triple pendulum and geophones were attached to the table. The triple was pretty much just located as an effective ballast mass, no attempt was made to wire it or releases its masses from stops nor was any attempt made to align it accurately. This will come later once the control of the HAM SAS has been better achieved.

Quad Triple Cavity

The triple has been coarsely aligned to the quad, we are in the process of shaking down the wiring to damp the triple so that we can check that the yaw alignment is sufficient. When this has been achieved we will move on to the quad.

ISI

We have installed the second set of stage 0-1 shims. The system has been balanced and is now running and we are currently taking compliance measurements. Although these are unlikely to be the "final" set of shims we are hoping to be able to match the change in compliance measurements to the model.

CIT Science Group (Weinstein)

____________________________

Patrick Sutton:

Coherent analysis:

Training new student Michal Was on coherent burst searches, X-Pipeline analysis package.
Writing X-Pipeline documentation.
Met with Tinto to discuss theory of stochastic searches and how they may relate to coherent burst searches.

Other burst activities:

Editing and updating NetworkSimulator (package for tuning burst analyses) for use in LIGO-Virgo project IIb.

Miscellaneous duties:

Reviewing LSC-PP review procedures document.
Chasing down "missing" S4 authors to finalize S4 author list.
Chasing down scimons for CIT.
Reviewing LIGO-AURIGA analysis notes for Feb. 26 review telecon.

____________________________

Eirini Messaritaki:

I worked on the implementation of the null-stream test for filtered data, for the H1-H2 detectors.
I worked with Vibha Laljani on the detection of spinning BBH waveforms with non-spinning SPA templates.

____________________________

Igor Yakushin:

Working on applying coherent waveburst to LIGO-VIRGO project IIb.
Debugging run summary script for coherent waveburst online analysis.

____________________________

Kent Blackburn:

OPEN SCIENCE GRID APPLICATIONS

OSG Applications and Extensions Coordinator verbally signed off on LIGO second milestone while at the JOT meeting.
New release of Globus 4.0.4 release and will be tested against TclGlobus and LDAS
ISI reported that the dynamic data cleanup support for Pegasus has been implemented and small scale tests are underway.

OPEN SCIENCE GRID VALIDATION TESTBED

No VTB activity this week.

OPEN SCIENCE GRID INTEGRATION TESTBED

Validated TTU_TESTWULF (PBS site) with LIGO app on OSG 0.5.2 Six sites now have passed the validation with the LIGO app on OSG 0.5.2
Updated SiteValidationTableITB052 Twiki as tests occurred.
Worked with Saul Yossef on pacman -update bug in VDT 1.6.1x.
Worked with nanohub VO validator to support validation of OSG 0.5.2.
Reviewed state of work on SRM support in the Pegasus planner with the Pegasus team.
Prepared slides for OSG Consortium session on "Hands-on Training on the OSG client".
Attended weekly DASWG, ITB, Pegasus, and VTB telecoms.

OPEN SCIENCE GRID MANAGEMENT

Held first Joint Oversight Team (JOT) meeting in Washington, DC last week. Presented on LIGO's use of OSG among the many items.
Continued to work through remaining Statements of Work for OSG.

Laboratory Computing (Anderson)

LDAS Software (Maros)

Started reviewing what needs to be done to integrate the production of h(t) frames into the LDAS pipeline.Completed work for PR2946 which deals with a corner case of the diskcacheAPI not locating frame files for the createRDS command.Work is being done to try and work around an issue with tclglobus not flushing requests.The TCL code no longer execs the system kill command. These calls have been replaced by an internal c++ equivalent.The system testing of LDAS used version 1.8.467 of the software on ldas-dev with no failures.
The ldas-test system has been restored to version 1.8.467 of LDAS for long term testing.

LDAS System Administration (Anderson)

Caltech(Dan Kozak)

Republished more h(t) files at LHO, and set GPS time back to beginning of S5 to pick up straglers.Completed ingest of L0 data whose tapes were in the CIT silo but had not been ingested. Confirmed with Greg that there are no unexplained gaps in the L0 data at CIT.Installed replaced disk in ldas-cit. Replaced one 3510 power supply and ordered another.Asked Sean Cochrane from Sun a couple of 6140 questions. RAID 6 is promised as a firmware update late this year. He was still looking for a timeline on fixing the 2TB volume limit.Helped answer a question about offline files at LHO.
Did work with the 6140s: copied some test data to one of the new filesystem, set up RAID 1 device for further metadata testing, trying to regain management access to the test 6140 for more basic testing as a JBOD (ongoing).

(Erik Espinoza)

Rebuilt scanning mail server.Finished & tested scanning mail server instructions for Larry.Assisted Mike Pedraza during the spam flood Wednesday.Found minor issues with ldas-grid/pcdev1 replacement
- Prior ldas-pcdev1 and ldas-grid were out of sync, certain packages were only used on pcdev1, which weren't included in the current ldas-grid/pcdev1. Installed these packages and sync'd new ldas-grid/pcdev1.Forgot to remove prelink.
- Forgot to sync over the 'sendmail' configuration.
Setup 'ldas-condor' to be an ntp server.Updated ntp configuration on nodes to use Switch, ldas-condor and gateway.Made sk98lin kernel repo available from '/imports/mirror/misc/sk98lin'.Testing Solaris/Cisco 8-way trunk.Opened support ticket w/ Cisco regarding LACP.Upgraded Cisco IOS on Cluster switch.
Enabled 'fair-queue' queuing strategy on all cluster switch ports.

Livingston(Igor Yakushin)

Tested upgrade to Solaris 10 U3 and patches on the test segment database server.
Rereading segment database related code to decide what would be the first step to implement the suggested changes. I believe the first step that should not break anything is to change version number for automatically inserted DMT segments from 1 to 0 and start running segment coalesence cron job to generate version 1 segments. Testing it on the test segment database server.

(Dwayne Giardina):

added DNS entry for ldas-condormaking modifications to cluster_mon app. for disk I/O and network traffic reporting. also had to install rrdtool on the nodes to fix broken updatesreplaced hda in nodes 53 and 95 with mirrors from nodes 1 and 2 when a reboot yielded "No OS found". It was the quickest and cleanest fix for now, as I don't yet have kickstart working.attempting to track down a 3510 disk that was lost in return shipment. DHL tracking site shows no record of replacement disk even being delivered.node190 remains down, but the problem is probably bad memory that I have yet to test
tape eject and shipment

Hanford(Greg Mendell)

I have run more benchmark RDS tests comparing various frame compression methods that already exist in at least recent versions of the C and C++ frame libraries. These tests indicate zero_suppress_int_float is better the currently used gzip compression, reducing the size of Level 1 RDS frames by 30% and the time to generate them by 20%. Further testing will be done and discussions are underway with the run coordinators on whether to implement the better compression method during S5.

(Ben Johnson)

Updated gateway to Sol10U3. Problems with the update on dataserver caused me to go back to the original un-updated system on that host.FC4 on the cluster has been fully updated. Condor was upgraded to 6.8.4 as well, though ldas-condori is not yet running any condor services (is scheduled for next week).
Installed Windows XP, FC4, FC5, FC6, and Debian 3.1r5 in Linux 2.6.20.1 KVM+qemu virtual machines. Installed LDG on the FC4 and FC5 releases so far. I installed Visual Studio 2005 on the XP machine and am using it to develop the Windows Matlab NDS client.

General Computing (Wallace)

MIT(Fred)

Attended NSF conference;More work on creating backup servers pellinore: emvogil-2, emvogil-3, oyster zones created/configured as backup servers (web, NIS+ master, etc.)brown bear calendar software (ligo calendars) to dup (redundant) calendarsolidworks performance issues (64bit) ; new user setup;some dst updates; announce & web page for dst updates;enoki (sun 1000) potential tubera replacement: hardware problems
various software purchases; 1 dell outlet computer purchased for file service.

Livingston(Dwayne)

added entry to DNS server for ldas-condorattempted to assist user with updating OneNote from trial version to full version, but the activation did not want to accept the serial number from ITS software site.restored network connection to HPLF and readying a new PC for the labassisted a couple of users with printer problemshelped Rich track down misc. inventory items in LDAS and GC land.set up a PC in the CUR for users to submit timesheets in Kronos if they were experiencing Java version compatibility errorsspam filter cleanup
other usual user requests and support

(Shannon)

Attended the NSF cybersecurity meeting in DC.Installed some additional software on the IDS box at CIT.Investigated some strange traffic at CIT which turned out to be Skype traffic.Finalizing details for the network connection in BR for the LSC meeting. It is going to be tight pulling off the connectivity, but hopefully it can be done.replaced a failed RAID disk.Working with Arkeia on a file corruption issue. This is preventing backups at the present time.Other usual odds & ends.
Not much else to report with travel and out three days due to the flu.

Hanford(Christine)

Found out that our network services from PNNL have not been paid and they want 18 months back payment. I've been balancing my account to see how much money I have left and what I still need to spend. Also working to get a method to pay PNNL regularly so this doesn't happen again.Restored some deleted files for a user.- Restored some deleted files for a user.Set up another laptop.Worked with Ben on some file mounting problems between GC and LDAS computers. Something in the new patches made the computers more sensitive to the way mounting is done.Reviewing quotes for renewal and upgrade of my Cisco equipment support contracts.Attended a cybersecurity meeting to discuss general LIGO security and sys admin.
Other misc. user support.

CIT(Christian)

David Beckett- David is having problems with his old laptop. I¹ve replaced the old laptop with a Dell latitude d610.Cindy Akutagawa- Upgraded to Office 2007 after getting multiple errors. I¹ve also Added 1GB of additional memory to Cindy¹s workstation.Assisted LIGO users with the new Kronos Timekeeping Java plug-in.Worked on the Spam Filters with Mike.
Other misc.: Continued onsite software/phone support.

(Mike)

More work on updating servers with DST patches. Some of the patches require the whole patch cluster, which take many hours to install on the older machines.Steve Vass: Worked on an email issue for him.Ran most of the NTSRV’s end of month ghost backups.Barry Barish: Tried to backup his laptop which failed due to bad sectors. I spent a lot of time on this. Christian helped out with this as well.Finished up with a DCC backup “nightly process” workstation.Working on Primavera getting some licensing issues worked out.Continued work on Spam Filters searching for false positives and maintaining our mail servers.
Other misc. user support plus sysadmin tasks.

(Veronica)

LSC: Updates of the database of technical papers. updates of mailinglists. Ongoing web support of the March meeting. Website updates.LIGO: Working on the homepage redo. Website updates. Working on the webpages for the upcoming PAC meeting.
CaJAGWR: Website updates /user support.

(Bruce Sears)

-iLog Maintenance and Planning: (2.0 days)

General iLog maintenance (user adds, keyword adds, systems work, etc.)

Adding more configuration checking scripts in iLog to check for problems with file and directory permissions, etc.

Advanced LIGO and Supporting R&D (Shoemaker)

Advanced LIGO Systems

ELI (Adhikari/Zucker)

PSL: Annamaria and Rick

report continued progress on integrated PSL table layout and MER electronics hut design. Drawings to be posted to wiki shortly for review.

IO:

Faraday magnets have been rebaked at 80C and are now back in vacuum qualification test at CIT. Thin film polarizers tested better than specified, so more have been ordered. Volker has begun testing the prototype EOM, now working on reducing stray capacitive loading.

TCS:

Tobin and Phil report the high power TCS testbed has been
successfully relocated to Downs lab and is undergoing realignment. ( http://lhocds.ligo-wa.caltech.edu:8000/mLIGO/ Thermal_Compensation_System

SEI:

ISI system design has passed muster according to model results and is being detailed at HPD. Status remains on schedule for April milestones. See AdL SEI report. The HAM SAS prototype tilt problem has been provisinally stabilized by an auxiliary spring system and the triple suspension payload is now being installed for characterization. See the SAS report for details.

ISC:

OMC substrate design is at prospective vendors for comment. The superpolished optics order has been placed, expecting 8 weeks delivery. See Garilynn's report and http://ilog.ligo-wa.caltech.edu:7285/advligo/Output_Mode_Cleaner.Thermal distortion of OMC substrate was modeled analytically by Sam and there appears adequate design margin. A minor rearrangement of electronics payloads helped symmetrize head loads. Phil is building a more detailed thermal FEA.Order was placed with vendor for hermetic sealing of in-vacuum DC PD preamplifiers.Rich is developing wiring harness designs.
Beam steering prototype designs have been submitted to fabrication shop in Australia for initial experiments.

SUS:

OMC SUS structure is in work at the vendor, expecting delivery week of 3/27. OSEM requirements have been resolved with Birmingham. See Janeen's AdL report.LOS EQ stop retrofit design under continued development with vendor.
Continued discussion on potential options formitigating magnet nonlinearities, electrostatic charging and suspension clamping losses. These and other proposed scope changes are to be reviewed during March for potential inclusion in April baseline update.

VE/AOS:

Mike Smith is working on AdL output beam layout to support definition of septum plate. He and Chris have also started looking at required redesign of ITM and ETM arm cavity baffles. Betsy, Rick and Doug have summarized and posted analysis of beam clearances for TCS and PCAL. See http://lhocds.ligo-wa.caltech.edu:8000/mLIGO/Auxillary_Optics_Support

COMING ATTRACTIONS:

Next Thursday we hope to talk about:
- H1 PEPI motivation, part II (Mike, Sam)L1 AS mode structure w/ mapping to 4-mirror OMC transmission (Rupal, Sam)
- UV charge mitigation (Gregg Harry)

Modeling and Simulation

From: Hiroaki Yamamoto hiro@ligo.caltech.edue2e weekly meeting

Sany explained his implementation of the modal control of the triple suspension in the e2e framework. The SIMULINK version and e2e version works almost identically. Current version deals with only one DOF, and his group is going to implement newer version which handles all DOF.

Static IFO simulation (Hiro)

Regarding the diffractive loss when the thermal deformation on the advLIGO arm mirrors changes the resonating field, my loss comes out to be smaller (a few ppm, i.e., insignificant) than Phil's calculation (20ppm). I studied this more carefully by comparing the resultant fields and the mathematical implementation. My conclusion is that the discrepancy comes from two sources (1) The grid size of Phil's calculation is too large (Hiro: 2.7mm vs Phil:7.0mm) and the edge of the mirror is not smooth enough and (2) the ROC correction is unnecessarily large to restore the 6cm beam size. Waiting for the Phil's calculation to confirm this conclusion.
Coding toward the implementation of a coupled cavity, which will have finite size BS and mode matching telescope mirrors.

Modeler ( e2e simulation engine ) and ALFI ( e2e front end ) (Hiro, Bruce, Melody)( UserDefinedPrimitive in e2e is the MEX-FILE in matlab )

Melody is working to improve the UserDefinedPrimitive front-end in ALFI.Hiro, Bruce and Melody discussed about the infrastructure and code structure how UserDefinedPrimitive is to be implemented.Bruce is working to improve the UserDefinedPrimitive implementation in the simulation engine.
Bruce and Melody are writing the documentation of how the UserDefinedPrimitive is implemented in the e2e framework.

Mechanical Simulation for advanced LIGO (Sany and SLU team)

Jameson and I worked on our e2e modeling of AdvLIGO Input Mode Cleaner. We implemented both length sensing control and frequency control loops in e2e our model. Using simple control filters, we can lock the cavity. We are now trying to use more realistic filters.

CDSPrestabilized Laser

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

After the kick-off safety this week I understand where some of the ANSI Z136.1-2000 numbers related to ocular exposure come from. The draft PSL Safety Plan will be updated as a result. I have also drafted out a sample standard operating procedure (SOP) used as an example for the Safety Plan. The spreadsheet I wrote for laser hazard calculations appears to be consistent with at least one commercial software package we use. Otherwise I am still negotiating my way through the piles of Beckhoff Automation documentation. Christian Veltkamp sent me a sample program from which I hope to be able to glean something more informative than the examples provided in the documentation.

Seismic Isolation

From: Ken Mason kmason@ligo.mit.edu

BSC Seismic Isolation Assembly and Test

New shims designed to reduce cross coupling have been installed on the stage 0-1 springs. Disassembly of the isolation system is scheduled to begin on 3/8. Lee Cardenas will come to MIT to help.
Stephany has sorted the bill of materials by material type to help distinguish the 7075 aluminum parts which need air baking from the 6061 parts which will be vacuum baked. She has also written the assembly procedure for installing the blades and flexures.

HAM Single Stage Isolation System Design

HPD has stepped up the design of the HAM system to meet the FDR date of 4/2. They are currently 60% complete with the overall design and 86% complete for the design required for the FDR. HPD is reporting they anticipated to be 27% over budget for the design phase. DHS – we are talking about this and watching it closely.

From: Brian Lantz <BLantz@stanford.edu>

notes from the SEI telecon

Friday, Feb 23 at 2 pm eastern, 1pm central, 11 am pacific, etc

Announcements

SAS floating without rubbing

working on the horz direction

LSC meeting

Gaby putting together the meeting agenda
hour or two on Thursday morning for technical presentations

HAM contract status

HPD is ready to start with detailing in earnest the new PSI actuator status
talked with PSI about next step. Dennis is deferring the purchase until the downselect is made. 14-16 weeks to design and build, roughly $4200/ each.

Progress on the BSC

disassembly and cleaning plans -- System is not rubbing!
have 1 extra set of shimsshims in now are to hold the full load, same x-coupling.new load shims are about 50 lbs. off. 10-15% of the change, maybe 2% of the total load.
stage 0 still has some couplings, stage 0 is bending, so the disp sensors are being fooled.

1) could be hysteresis in the springs and the flexures

2) could be higher order pendulum terms

Rich wants to put the other shims in on Monday, work on that next week take apartcompliance measurements with new shims2-bolt spring tensioners
stage 2 actuators locations

1.89 seems right,1.83 can be installed.

1.83 ordered last week, should be here in about 5 weeks

will need new shims for stage 2, have the blanks now
Ken will follow up with Laurent to get the shims calculated and cut

ISI electronics

current readback will take another channel, but won't learn anything new. for LASTI, walk around unit single locker box for all the GS-13s and STS-2 with switch on the front to select instrument, button to push to run the lock/ unlock program, cables which would attach to either the ISI interface or the STS-2 box. LLO to provide the LASTI prototype box, Caltech to provide the shelf and the eventual repacking if necessary to make into a rack mountreal pods at LLO - locker code, clean assembly, STS-2s. cleaning -- send large parts to Galli & Morrili. Joe Hanson should be ready for the pods still need a procedure to assemble the pods, may need a post-assembly rinse in ethanol, MIT to ship back all the pods to LLO MIT to do actuators LLO to do pods Caltech to do everything else
Ken Watts made some mods to the cables in the pods, Russ was going to make an update to the schematic

vertical seismometers

temp sensor back in place,
finished noise measurements of the optical sensors finished cleaning out the spot under the floor
pressure sensor should be good to about 1e-2 of a torr. 1e-3 of a PSI

Suspensions

From: Norna Robertson <nroberts@ligo.caltech.edu>Advanced LIGO suspensions, Norna A Robertson

Supplied a MATLAB recycling mirror conceptual design model (using Mark Barton's updated triple model) to Rana Adhikari for use in studying control forces.

From: Janeen Romie <janeen@ligo-la.caltech.edu>Enhanced/Advanced LIGO

Working on getting OMC parts fabricated.Working with Mike Gerfen and many others on weld design & quality of OMC structure.Worked with Norna on lab space needs.Hosted meetings on cabling requirements for noise quad and OMC.
Worked with Norna and others to provide Carol et.al. SUS progress updates on Jan 23.

From: k mailand kmailand@ligo.caltech.eduAdv. LIGO

The CES shop is continuing work on the LASTI tooling assemblies.
Ian will deliver his outer support frame to CIT the first week in March, we will use it to test our assembly.

Core Optics

From: Bill Kells kells@ligo.caltech.eduItems for this past week:

In progress thoroughly reviewing the status of the TM surface losses in LIGO I. Have been checking around with interested parties as to data and analysis consensus. Will have a final draft summary, next week. This will summarize the current status and the history of all measurements. New OTF scatter measurements by Liyuan, plus the above review have made me appreciate some ambiguities in the tests (or rather their comparison), so there will be some actual new insight into the iterpretation of loss as measured in the Lab vis a vis infered from site performance. Have been working on a final review of the inspiral S3S4 paper which will be presented to the LSC for the upcoming meeting.
Also in view of the LSC meeting, have been discussing with D. Ottaway to have a final reconciliation and consensus on how PI resonances are effected by various PRC and SRC tunings. This is about complete, and we seem to agree on all particulars once misunderstanding on terminology and parameters have been resolved.

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

An Advanced LIGO optics inventory has been created on the AdvLIGO Wiki http://ilog.ligo-wa.caltech.edu:7285/advligo/COC_InventoriesDue to renovations in the sub-basement the Advanced LIGO blank inventory will move from 058 to 046 WB. Many other things are moving. If you have precious equipment in the 058 entry or first room, please claim it.
To my surprise, the blanks for CSIRO and QED have not yet shipped. They were prepared for shipping Monday the 26th. I'm looking into the cause of the delay.

From: Helena Armandula ahelena@ligo.caltech.eduAdv. LIGO Coatings CSIRO, as reported by Mark Gross:

They tried another run of TiO-SiO, this time with a view to doing some extreme things to it. They deposited a very thick (44 layers) coating and annealed it to almost 850 C. The rationale was that there is some evidence in the literature that deposited silica relaxes back to its bulk state in a reasonable time only when the temperature exceeds about 750 C. Their objective was to make a coating which is as similar to the silica substrate as possible. Unfortunately, this coating did not survive this very high temperature, although not for the reasons they expected, namely, that the coating cracked rather severely, but did not go cloudy as one would expect if it had recrystallized with a large grain size, as usually happens with non-silica material at annealing temperatures above 700 C. In addition, the IBS machine had problems during the run, which resulted in a large amount of contamination of the film with particles (and who knows what else). While this wasn't an ideal run, there is scope for improvement. Perhaps the annealing was a bit too quick and aggressive and might be better done in stages, they still need to determine how hot they can go before problems occur.

Although it looks bad they would like to send the sample they did for absorption loss measurements, that might allow something useful to be obtained from this run.

LMA

Still having unsolved problems when a modified Ti doped Ta coating is deposited.
A good run was obtained with a regular 1/4 layer design on R. DeSalvo's / John Miller mirrors.

Contamination Control

A Statement of Work was presented and accepted by JPL's Cleanroom Engineering & Compliance, part of the Technical Facilities Management.
We'll be looking at, and revising if necessary:

Ultra-clean bagging material selection

Use of particle counters and fallout wafers for monitoring the clean environment and vacuum chambers

Cleanroom garments and disposablesEffective clean tent layout and staging of hardware/personnel into the clean area

Housekeeping practices

Adv. LIGO COC

The mirror carrier prototype for Adv. LIGO optics will be finished, cleaned and baked over the weekend.
The shipping case required some rework because the carrier box was modified to accept a wedged optic.

Auxiliary Optics

Input Optics

For additional information about this report, contact Albert Lazzarini or Phil Lindquist

LSC	Administration	Hanford Observatory	Livingston Observatory
Optical & Mechanical	Controls and Data Systems	40 Meter Facility	TNI
LASTI	CIT Science Group	Laboratory Computing	Adv. LIGO Development

Weekly Report for Week Ending March 1, 2007

The LIGO Executive Committee Agenda for Monday, March 5, 2007 will be:

LSC Issues (Saulson)

STATUS OF LSC MOUs (Lloyd)

PROPERTY MANAGEMENT (Luna)

DOCUMENT CONTROL CENTER (Turner, Mak)

Update to Current Document Management System (Lindquist)

FINANCIAL SYSTEMS (Funaro, Brambila, Kaufman)

SUBCONTRACTS MANAGEMENT (Jasnow, Salone)

PROPOSALS and REPORTS (Lindquist)

CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)

HUMAN RESOURCES (Akutagawa)

Quality/Safety (Tyler)

LIGO Hanford Observatory (LHO) and Interferometer Operations (Raab)

Summary of S5 Activities at LIGO Hanford Observatory (compiled by K. Kawabe)

LIGO Livingston Observatory (LLO) and Interferometer Operations (Giaime)

Mechanical and Optical Systems (Coyne)

Controls and Data Systems (Bork)

40-Meter Interferometer (Weinstein)

Thermal Noise Interferometer (Black)

LASTI (Ottaway)

CIT Science Group (Weinstein)

Laboratory Computing (Anderson)

LDAS Software (Maros)

LDAS System Administration (Anderson)

General Computing (Wallace)

Advanced LIGO and Supporting R&D (Shoemaker)

Advanced LIGO Systems

ELI (Adhikari/Zucker)

Modeling and Simulation

CDSPrestabilized Laser

Seismic Isolation

Suspensions

Core Optics

Auxiliary Optics

Input Optics