Weekly Report for Week Ending December 7, 2006

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

Past Weekly Reports

Agenda:

(Meeting time: 10:30 am Pacific Time)

The LIGO Staffing Committee will meet this coming Monday, December 11, 2006.

Special Announcements: There will be no Executive Committee meeting on Monday 11 December.

Weekly Report Highlights:

"It was a cold and quiet week at LHO, yielding good duty cycles (H1 90%, H2 85%) and nominal ranges (H1 14-15Mpc, H2 6-7Mpc)"

LSC Issues (Saulson)

LSC Issues and Data Analysis:

The LSC Executive Committee met on Thursday 7 December, with the agenda devoted exclusively to approval of talks for the upcoming GWDAW meeting.

All talks were approved, although some with specific instructions to remove information, or to label it more clearly as Preliminary. The Working Group chairs and their Review Committees have working instructions for each of the talks. In many cases, the Review Committees will make minor changes according to the discussion, or finish a review of a section of a talk. In several cases, revised talks will be reconsidered by the LSC Executive Committee via email (and telephone if required).

A new intermediate state of review was allowed in the form of appropriate due to the workshop nature of the GWDAW meeting.

LIGO Laboratory Administration (Lindquist)

STATUS OF LSC MOUs (Lloyd)

>From: Dorothy Lloyd <dot@ligo.caltech.edu>

MOUs approved this reporting period, and submitted to Peter Saulson for signature, are: Columbia, Florida, LSU, Maryland, NAOJ, Stanford and TexasA.
Revisions to the following MOUs have been completed and will be submitted to Peter Saulson for signature: Balearic, Carleton, Embry-Riddle, Florida, LaTech, Northwestern and SLU.

PROPERTY MANAGEMENT (Luna)

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

Provided assistance to the Detector Group (H. Armandula / L. Zhang) with packing and shipping of two Fused Silica Substrates to CSIRO in Australia. Account Number LIGO.OPT - 5.4 - NSFLIGO.FY02ON.
Working with Property Services to reconcile twenty-two Fabrication Accounts from 2003 to 2006.
Requested to change the expenditure type on four PO's that affect Government Equipment at LLO and LHO.
Created property records for one Fusion Splicer at LLO.

DOCUMENT CONTROL CENTER (Turner, Mak)

>From: Linda Turner <turner@ligo.caltech.edu>

FileHold Status:

A few comments were received from the testing group this past week. Six reviewers responded. Some constructive comments identified bugs or issues to pass along for FileHold to resolve. Other comments required additional clarification (ie. web client or FDA, what action was underway, what didn't seem to work, error messages, etc.)
Three reviewers had mostly positive acceptance of the system, while three felt the speed was a major issue if not a show-stopper. George and I went through the action items generated from our meeting last week with FileHold on the list of import issues arising from the migration into the current test system. We will meet with FileHold tomorrow to see what items were resolved and clarified by FileHold. Our action items are complete except for the acronym list. We have isolated about 3000 and will whittle this down Friday morning. We should have the finalized list for FileHold by December 15th, when we do the final metadata upload for FileHold.

Milestone	Scheduled Date	Status	Comments
Accept/Reject Test System	12/1/06	Delayed	Testing was not completed. Some delay was due to meetings that many of the reviewers were involved in; some comments were not specific enough in nature to build a constructive response to FileHold and were returned to the author for further clarification. It is hoped that this milestone can be completed by 12/10/06
Release of Change Order for URL development	12/04/06	Delayed	Change order was held up due to slippage in the accept/reject of the test system. It is anticipated that for every day late in the change order release, there will be a ripple effect of delay due to a later start on the URL development.
Upload of latest DCC Database metadata	12/13-15/06	On target	George and I are on target for providing FileHold with the latest upload for FileHold’s migration into the new system
FileHold build release with URL	12/20/06	Delayed	For every day the change order is held up, the URL build will be equally delayed.
LIGO Testing of URL	12/21/06 – 01/01/07
Accept/Reject of URL development	01/2/07
FileHold release of Dry Run System	01/05/07
LIGO Test of Dry Run system	01/6-11/07
Accept/Reject Dry Run System	01/12/07
Training	01/13 – 31/07
DCC Dark for Final Migration into new system	02/1-11/07
LIVE Deployment of New System	02/12/07

Additional Activities:

Worked with Larry Wallace on numerous issues and questions raised from the testing group. Larry has fixed the broken public search utility.
Began working on a Q & A interview to be published in the February issue of Document magazine dealing with our migration experience into a new document management system. `

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

Processed another two sets of HAM drawings from Promec.
Scanning Update - Progress continues on scanning of Travel Expense Reports.

FINANCIAL SYSTEMS (Funaro, Brambila, Kaufman)

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

For ACCOUNTS PAYABLE HISTORY Press Here.

>From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>

Completed change order #3 to Yamilet Gardens and submitted to the vendor.
Responded to the audit and submitted the purchase orders requested.
Routed the new subcontract for approval.
Closed out po's and submitted the monthly p.o. close out report.
Responded to inquiries on invoices, deliveries, orders, and changes to orders.
Provided assistance with TechMart issues.

>From: Florence Kaufman <fkaufman@ligo.caltech.edu>

Completed and posted on the network the monthly financial reports for Operations and R&D for FY2007 and FY2006 as of the end of November.
Completed and posted the report for the Outreach Award as of the end of November.
Prepared an Intra Award Cost Transfer to move the payment for furniture for the Science Building from a fabrication to a non-fabrication account.
Prepared a report on expenditures incurred to date for equipment sent to Germany in order to prepare an invoice to obtain reimbursement for these expenditures.
Completed and sent out the report for the Livingston discretionary account as of the end of November.
Prepared and sent to Project Accounting a list of budget realignments required between various LIGO accounts. Such realignments are required whenever the expenditures for a particular LIGO project number exceeds the budget shown in ORACLE for that project number. This is because Caltech is unable to properly bill the NSF for reimbursement of LIGO expenditures, if expenditures exceed budget at the project level.
Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport. (For passwords contact Florence)

SUBCONTRACTS MANAGEMENT (Jasnow, Salone)

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

Request for Proposals for the Advanced LIGO optics polishing was released on December 5. This is the Pathfinder effort, with the contractor polishing one substrate and measuring another. Proposals are due on January 19, with the possibility of awarding two or three contracts for this effort to determine who is best qualified for the Advanced LIGO production effort.
Information is being gathered to determine how to operate the bookstore/gift shop in the new LLO SEC. Discussions are being held with personnel involved in the operation of a similar store at the Palomar Observatory.

CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)

There are no open change requests.

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

Summary of S5 Activities at LIGO Hanford Observatory (compiled by M. Landry)

It was a cold and quiet week at LHO, yielding good duty cycles (H1 90%, H2 85%) and nominal ranges (H1 14-15Mpc, H2 6-7Mpc).

Some S5 highlights from the LHO elog are bulleted below:

summaries: Tuesday maintenance summary, range & duty cycle weekly, IFO maintenance
H1 and H2 DARM_ERR coherence is reduced at 113Hz and some higher frequencies after floating ISCT4, the anti-symmetric output table
tumbleweed baling resumed this week, injecting some additional noise into the corner station
an LHO image library is in the works
a preliminary length calibration of the 4k via the VCO agrees with the official calibration within errors of the procedures
a test of reallocating the 4k DARM gain proved no quieter than the nominal setup
there were multiple occurences of the 2k ETMY hangup on H2, requiring shaking to restore good noise performance
a Tuesday CDS maintenance summary was posted

Outreach (D. Ingram)
Corey Grey and Dale Ingram hosted a four-hour visit from 40 Mt.Adams Middle School 7th and 8th graders on 12/5. Mt. Adams is part of the White Swan School District that serves the Yakama Nation.

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

S5 Run (Igor Yakushin):

Still too high microseismic most of the week and in addition nearby logging since Saturday. The average range for a week is ~12Mpc, the duty cycle 60%. Last night, however, was the best owl shift for the last month or two: 13.5 Mpc, 80%.

Last week Sam, Phil and Valera worked on two major commissioning projects: upconversion injections and thermal lensing ITM absorption measurements. On Tuesday SAM-QFS was upgraded on fb0's file system.[JG comment: The up-conversion study led to a successful attempt to improve the tidal servo for increased bandwidth. Qualitative indications are that L1 is now quieter and more reliable in periods of high low-frequency ground vibration and/or wind.]LIGO computing and network security (Roddy)

Reported under General Computing, see below.

General computing and LDAS admin (Giardina)

Reported under General Computing, see below
Reported under LDAS System Administration, see below

Data analysis & computing (Yakushin)

---------------------------------------------------------------------
Storage/Condor/LDAS admin:
Reported under LDAS System Administration, see below Data analysis:
Reported under Data Analysis activities, see below

__________________________________________________________________________________________

Science Education and Outreach (Deborah Muhammad)

Prepared programs for two school groups and one home school group.
2nd St Thomas Aquinas 12th Grade Physics classes from Hammond, LA visited on Tuesday.
Approximately 70 Abney Elementary School 5th Graders and 10 chaperons visited on Thursday.
Friday about 12 persons will visited with a home school group for exhibit play and a facility tour.
Preparing for 3 school groups and 1 youth social group on next week: Zachary Elementary, Creekside Jr. High and 7th Ward Elementary.

Safety & Security (Rich Reisen)

Found no laser/site safety concerns this reporting period.
Checked all emergency lighting throughout the site. All lights operational
Checked all portable fire extinguishers for proper tagging and pressure. All units are within specs.

Advanced LIGO (Janeen Romie)

Working with Norna, Calum & Chris on OMC design tasks. Working on blade cartridge design interface to structure weldment.
Working with Norna on a number of issues that have come up, including adding ECDs and adjustable mass.
Talking with Carol, Mike Z, Dave O, Norna and others about LASTI test plan.
Provided a preliminary drawing of the thermal compensation plate to Phil Willems and Gari.
Keeping track of the earthquake stop testing at MIT
Working with Carol on a number of SUS schedule issues.

Mechanical and Optical Systems (Coyne)

See Advanced LIGO

Controls and Data Systems (Bork)

See Advanced LIGO

40-Meter Interferometer (Weinstein)

DC detection:
- After last week's major milestone (commissioning the length and alignment control servos of the OMC and using the DC readout to control the michelson and measure noise spectra of the michelson and the smoothly-locked offset PRFPMI), Rob's attention has turned to lock acquisition work.
Vacuum squeezing:
- Go phase-locked the Lightwave 120 laser to the MOPA laser with a frequency shift of 610MHz. He used this frequency-shifted subcarrier to lock the OPO.
IFO commissioning, Electronics, controls, computers:
- Bram and Rana worked on developing a DC alignment procedure by dithering mirrors at frequencies of 7 - 11 Hz.
- Rob, Valera, Rana and Kirk worked on hand off from where the smooth PRFPMI script gets us to - i.e. arms and Mich locked to 1/2 fringe using DC signals, and PRC on resonance locked using REFL_33I (SRM is misaligned) - to a full RF signal scheme. They encountered a variety of problems, but are making progress.
- Kirk aligned the OSA on the PSL table and measured the modulation depth of the 33MHz and 166MHz signals after the Mach-Zender.
- Sam, Valera, Rob and Kirk worked on the implementation of the common mode servo, using YARM control as a pathfinder. Sam has written up a document describing the implementation, which is very similar to what is done at the sites.
- Rob noticed that the MC was having trouble locking. After some sleuthing, he concluded that the cables in the drive chain for MC suspensions get loose in response to seismic vibrations, and require reseating. After re-seating all the MC suspension cables, the MC was locking again. Rob suspects that this problem affects the other suspended optics as well.
- Rob, Valera and Bram are developing a new global scheme for DC alignment using low-frequency dithering of the suspended optics. The idea is to implement the digital dither-demod scheme used for OMC control, in our IFO ASC system. This will require some help from Rolf. Rob modified the LSC code to send signals to the ASC processor, in anticipation of this.
IFO modeling:
- Osamu is at MIT for a summit on AdLIGO ISC.
Lab Infrastructure, Bake lab:
- Bob continues to tend to the care and feeding of the 40m lab while Steve is on vacation.
- Bob had a turbo pump on oven C fail in the middle of a bake job. He replaced it before the oven temp got too high.

Thermal Noise Interferometer (Black)

Nothing significant to report this week. There was a delay in the delivery of the optimized coatings, but it does not appear to be anything serious. Greg is working on the remote-alignment upgrade, and we are waiting on delivery of the new mirror mounts. Akira has been measuring mirror Qs, but he took a week and a half off to go to Japan. He is scheduled to visit Seiji's lab while he is there.

LASTI (Ottaway)

CIT Science Group (Weinstein)

___________________

Patrick Sutton

LSC paper and talk reviews:

Reviewed paper by Brown et al. on IMRI detection by AdvLIGO.
Reviewed LIGO-Virgo project Ib burst paper, sent report to the joint working group.
Sent comments on bursts and pulsar GWDAW drafts to Heng, Matone, Krishnan, and Pitkin.

Coherent analysis development work:

Found and fixed another bug in our predictSkyMap function that was screwing up predicted likelihood sky maps. Sent to Poprocki for testing in his project on source localization.
Edited scripts for generating ROC curves and pointing error distributions from xpipeline results files.
Studied ROCs and likelihoods for a test run of xpipeline using a new polarization-corrected elliptic likelihood with and without regularization. Currently preparing larger-scale tests.

___________________

Kent Blackburn

TCLGLOBUS:

Working with Mary Lei on the LDAS flushing problem associated with using TclGlobus.
Built Globus Toolkit 4.0.3 with non-threaded version on ldas-dev.ligo.caltech.edu to see if LDAS managerAPI core dumps will has been resolved.

OSG APPLICATION DEVELOPMENT:

Based on discussion with Karan Vahi (ISI), tested job clustering without partitioning and it works fine. Must have had a wrong transformation catalog a few weeks ago. We will run HIPE with job clustering but without partitioning.
Working on job clustering study with 6 partitions at PSU. Have completed 24 and 18 partitions.
Working on LIGO workflow planner to support running full HIPE at LDAS CIT cluster.
Working with David Meyer for setting up another site (UWMilwaukee) for running full HIPE with local cache.
Attempted to reproduce cluster work of Michael Samidi that he integrated with the latest release of workflow planner. Tests of nanoHIPE at FNAL_GPFARM and STAR_BNL failed to complete with cluster=50 after two days. More testing is necessary to understand why.
Started full HIPE with a local cache at FNAL_GPFARM. 6500 DAG nodes out of 80,000 completed. Only 4 failures have occurred.

OSG INTEGRATION TESTBED:

Reviewed documentation on installing a Gratia probe. In the process of determining if the Gratia server for the ITB is working properly with assistance from Steve Timm at Fermilab.
Checked Frank W.'s rule set on LIGO-CIT-ITB against latest OSG ITB recommendations.
Opened trouble ticket with GOC on VORS server down (since fixed).
Configured CEMon on LIGO-CIT-ITB.

OSG DEVELOPMENT:

Attended Pegasus, VDT and DASWG telecoms. Prepared agenda and chaired the ITB weekly meeting.
Added VOMS proxy support into LIGO workflow planner GUI.
Worked with Michael Samidi on integrating the ldas-grid cluster into the workflow planner.

OSG VALIDATION TESTBED:

Met with Suchandra Thapa, a new OSG member of the VTB team at University of Chicago to discuss planning.
Scheduled testing of ITB:client with Alain Roy on validation test bed for this week to fix problem with building PyGlobus. Preparing to install new VTB:ce (Compute Element) on VTB host.

OSG ADMINISTRATION:

Continued to work on OSG Statements of Work between OSG institutions and Univ of Wisc - Madision contract office.
Making final preparations for next weeks three day OSG Executive Meetings here at Caltech. These meetings will cover Finance Board, Executive Board and Blue-print agendas.

___________________

Igor Yakushin

Demonstrated per reviewers request that incoherent WB+CP had trouble with SG70Q9 and SG70Q100 simulations due to am amplitude cut: http://ldas-jobs.ligo-la.caltech.edu/~igor/REVIEW/70/
Reruning S4 LIGO-GEO analysis with the latest version of coherent waveburst.

_________________

Gregory Mendell

The modules StackSlideFstat.c and StackSlideFstat.h, in LALapps under lalapps/src/pulsar/hough/src2, are now operational, and add the StackSlide option to the hierarchical search code under development for the next release of Einstein@Home. The next step is to beginning testing this option.

___________________

Xavier Siemens

Finished working with Eiichi Hirose on time domain calibration. He is now able to generate the digital filters used in the time domain code. He will generate the V3 filters for all IFOs.
Worked on speed up of LALDemod, the pulsar coherent search demodulation code. Sped up the code by a factor of about 22 by using up-sampled SFTs and completely removing the innermost loop in LALDemod.
Wrote code to do noise (Sh) comparisons between frequency domain calibrated DARM_ERR and h(t). Something the h(t) review committee asked me to do. It's in lalapps/src/calibration/NoiseComparison.c

___________________

Duncan Brorwn

Spent most of the week making final changes to AdvLIGO-IMRI paper, which is now ready for submission to PRL
Worked on porting my version of SpEC to OpenMPI
Continued with review of S4 BBH results
Meet with Curt to discuss LISA SMBH mock data challenge results

Laboratory Computing (Anderson)

-----------------------------LDAS Software Systems (Maros)-----------------------------

Now that all 64bit platforms have been supported for basic 64 bit LDAS building and running, the efforts have shifted to addressing the other problem reports classified as critical for the next release.

The first of these problems deals with I/O performance tuning. The frameAPI has been extended to support configuration based on file system type (PR#2421). This allows for easier configuration by administrators.Also, the Tcl layer properly initializes the table (PR#2981). These changes also correct the problems and requests described in PR#2968.Work is also being done on setting the operating system limits for virtual memory used by the process (PR#3002). The C++ code is currently in place and the Tcl code is being actively developed.Two packages in /ldcg have been updated. The rsync package is now at 2.6.9 (PR#3082) and the version of tcl/tk being used is 8.4.14 (PR#3075).System testing of LDAS was done on Dec. 4, 2006 using version 1.8.390 of the software. All of the system tests passed.

LDAS System Administration (Anderson)

Caltech-------

(Dan Kozak)

Made change to archiver.cmd at LHO/LLO/CIT to try to get frequently updated files written to tape. So far it's not working, so more investigation will be required.
Came up with an bad file (always gets a "Resource temporarily not available" message) for Ed's LDAS testing.
Tuned the GPS times in CIT's collections.ini (ongoing--there's still a few collections that I'm collecting stats on).
Started reading 6140 docs in preparation for the arrival of the new hardware.
Worked on clearing out tapes in ERROR state at CIT with mixed success (some tapes did get reused successfully, others failed again and may, in the case of the tapes we got from CACR, need to be run thru a 9940A drive).
dentfied problem tapes at LHO marked 'tp' (generic tape) rather than 'sf' (9940). Still looking for an opportunity to shut things down to clean this up.
Went thru list of bad frames on nodes and recopied the few that were good in /archive and had just gotten corrupted in transit. Made a list of the rest which copied fine, but fail FrCheck/ FrVerify in both /archive and on the nodes.
Put some tapes temporarily into shelf storage at CIT.
Worked on benchmark of metadata stripe sizes. Still need to the final report, but eyeballing the numbers indicates that 16k is probably the correct stripe-size.

(Phil Ehrens)

Rolled out new sgwb cvs with combined pserver/gsissh:ext access.
Ongoing studying and setting up of ipfilters on ldas-test gateway.
Testing of certcheck.sh script via cron. The script works as required when run from a terminal but fails with no output when run via cron.

(Erik Espinoza)

Debugging Condor Quill/Postgres ballooning usage issue.
Replaced ram in node11/CPU1 node57/CPU2 node94/CPU1.
Upgraded LSCSOFT on Livingston and Hanford Observatory.
Built & preformed initial testing of QmailToaster Server to perform scanning for GC E-mail.
Opened "Little Red" Air Conditioner, found and removed flashlight and powered back up.
Investigating Postgres 8.2.
Collecting Spam to train QmailToaster SpamAssassin.
Rebooted node226 (blank screen of death).

MIT

----------

(Fred Donovan)

routine monitoring. 35 nodes not running E@H, room temperature is fine; one power strip (6 nodes ) may be flaky.

Livingston----------

(Igor Yakushin)

Two new 3511 JBODs for /home arrived.
fb0's SAM-QFS file system was upgraded.
LSCSOFT was upgraded.
diskcacheAPI got stuck couple times this week bringing createRDS jobs down. Restarting diskcacheAPI fixed the problem.
node162 got stuck and had to be rebooted.

(Dwayne Giardina)

Ejected tapes for shipment to CIT, imported and labeled replacements.
Received new 3511s for growing cluster user /home filesystem. Cleared an area in a rack for them, but have yet to install.
fb0 SAM-QFS patch with Lisa.
Additions/modifications to the cluster_mon utility, as well as peer review and discussion to follow during our next conf call.
Trouble with createRDS required restarting diskcacheAPI. I don't have permissions to do so. Stuart told me how to fix, but I have yet to do so.

Hanford----------

(Greg Mendell)

I have checked into the lscsoft ligotools repository a new utility called FrDiff.c, under ligotools/packages/FrContrib/extras. This program looks for differences in the data between two frame files. It will be available in an upcoming release of the ligotools FrContrib package.
Otherwise, I also performed routine tasks to keep LDAS services running, and data archiving and RDS generation up-to-date.

(Ben Johnson)

The 2 JBOD 3511s arrived this week. I am currently testing ways to add them onto the existing /home 3511s without any downtime (using the test 3511).
Working on getting LSCdataFind and the LDRdataFindServer to follow spec, w.r.t. start and end GPS times.
node32 had a HDD failure. Node has been kickstarted, and I've restored the most in-demand data to it first (h(t)).
Finished a new FrActivityFetcher utility to extract the IFO- ACTIVITY_STATE, IFO-ACTIVITY_INDEX, IFO-ACTIVITY_TYPE, channels, a la FrStateFetcher. This is for the Det Char folks.
Got CD/DVD burner working properly on my workstation. I currently have several Linux distributions: FC4,5,6, Debian 3.1, SuSE 10.1; as well as Sol 10 x86 and SPARC on DVD.

General Computing (Wallace)

MIT:

(Fred)

Purchased/installed dell outlet computer for B.
Extending smartd monitoring to gc computers
Installed Nagios on tintagel
Continued to add nodes to tintagel rsync daily backup (with mail notifications to me of daily status)
Setting up more people on dovecot imap
Installed (but not yet integrated) spam assassin - not too sure if this will do any good

Livingston:

(Dwayne)

changes to MySQL database for Shannon
auditorium audio-visual troubles; had meeting to discuss solutions; temporarily fixed (somewhat) A/V for current outreach needs
rebuilding two PCs, one for a user, one for the Adv. LIGO lab
SEC building printer troubles, need to order a part to fix.
continued training our spam filter
other usual user requests and support

(Shannon)

Fixed the instability problem on the border router/switch between us and LSU. Removed the local routing statements which fixed the instability problems but leaves us in a less than optimal state. Traffic between the two networks is stable and consistent, but it passes through an LSU device at this point. Longer term solution needs to be developed but we can live with this for a while.
Working on tuning out false positives on the CIT IDS. Will likely be an ongoing process for a while.
Installed patches on the DNS server.
Had to come in Friday night for the DNS server. I suspect that the power daemon on the server caused a lockup. The daemon was turned off so hopefully this should not happen again.
Still working on pricing info and available options for our core switch here. Upgrade will depend on budgetary planning. Still have some uncertainty in the budget due to unknown outreach requirements.
Fixed a couple of items in the auditorium. DVD player, etc. Also had a meeting to discuss long term plans for maint. and changes in the auditorium

Hanford:

(Christine)

Building the application/license server. Modeling the file structure after one Shannon uses at LLO. This requires building all freeware applications from scratch. This will take a long time as there are over a hundred applications that are regularly used.
Just received word that the new Cisco router has been shipped.
Just received a new wireless AP, the HP ProCurve 530. I'll start testing with this next week.
Started connecting computers to the new KVM switch system for my server room.
The electricians are here wiring up the new UPS for the CDS server room. As soon as CDS is fully on the new UPS, I will get the old CDS UPS for my server room.
Misc. user support and purchasing help.

CIT:

(Mike)

More testing on NTSRV backup software "Backup for Workgroups." We found this software does not cover all needed tasks. This software is a temporary solution until we find the appropriate software needed to cover all our backup tasks.
Larry and I worked in B/A server room moving/rack-mounting equipment to make room for additional hardware that is coming in this week.
Loading an AMD x86 Solaris server to replace one of our DHCP servers. This is an on going project.
Freed up some disk space on Ghost Server to run End of Month backups.
Ran End of Month backups on all NTSRV's.
Updated all NTSRV's with critical updates.
Continued work on maintaining mail servers plus Spam filters.
Other additional user support plus sysadmin tasks.

(Veronica)

LIGO: Web updates. Roster database updates.
LSC: Web updates. Database updates of the technical papers. Mailing lists updates.
CaJAGWR: Web updates.

(Christian)

Stan Whitcomb- Called Dell support to have LCD replaced on Stan¹s laptop.Re-imaged laptops that were returned to the loaner pull this week.Minor tweaks on the unit in the display case.Wilson House- Called HP support to replace compact flash card on HP LaserJet 9050 MFP.3flr W/B- Replaced dead hard drive on scanner/ CD burner system.Worked on the Spam Filters with Mike and Larry.
Other misc.: Continued onsite software/phone support.

(Larry)

Worked a number of purchases. The pocket backup drives have arrived and are being distributed. The Dell order has been delayed by a week. Working on a couple of s/w orders for different people and just received the mathcad order.
Continual work on testing out of the DCC Filehold s/w. Linda has the reports of the work done.
Worked with Shannon on a couple of security items. Mostly checking for false positives on the reports.
Spent time with PMA working on different logistical issues with the different rooms that are being renovated for labs and storage space.
Made some minor progress on setting up the new mail server. Also, working with Erik on a mail filter server. We hope to start testing the system this weekend.
Setup up a couple of new user accounts. Still a few things need to be done for them. Cleaned up a few accounts.
Worked with Mike in getting the racks ready for a new disk array.
Worked the spam filters. We are blocking 53% of the email coming through, (97K messages this week) which means a lot more spam is getting through. In the past we were blocking 60%-70%.
Regular user support and meetings.

(Bruce)

iLog Maintenance: (0.5 days)
General iLog maintenance (user adds, keyword adds, systems work, etc.)

Advanced LIGO and Supporting R&D (Shoemaker)

Advanced LIGO Systems

From: Hiroaki Yamamoto hiro@ligo.caltech.edu

Modeling and Simulation (Hiro Yamamoto)

modeling and simulation (Hiro Yamamoto)

-----------------------------------------------------------

e2e weekly meeting

----------------------------

Continued the discussion about the HAM-SAS simulation with cage on top o fit.

Dennis gave a concise description about the case and counter weights and about the requirement of payload.

Dennis also sent necessary information to Valerio so that Valerio can now complete the HAM-SAS statespace model with cage.

With this one included, the system, HAM-SAS + case + triple suspension, can be simulation with back reaction with descent approximation.

Sany is coming to Caltech next week to talk with Osamu about the MC locking design. With this lock design implemented, their main interest, the performance study of the MC for advanced LIGO, can be studied.

AdvLIGO LSC/ASC design using FP arm model with quad suspension (Osamu)

--------------------------------------------------------------------------------------------------------

As a result of single cavity FP for AdLIGO, speed of test mass is too fast to acquire lock due to too large seismic motion which is estimated from iLIGO seismic noise and proper seismic attenuator. Roughly test mass speed is 10 times faster than the speed to acquire lock. Local damping filter should be re-designed to get test mass slower, or the lock acquisition algorithm should be modified to stand higher speed.

Static IFO simulation (Hiro)

-------------------------------------

Class design for more complex optical configurations. No new physics yet. Fast simulation of Dual Recycled Michelson Cavity (Hiro, Keiko)

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To validate the approximations, 2 mathematica codes were written. One is to validate the approximation for mirror velocities, and the other is to validate that for mirror tilt angles. As a next step, some graphs should be plotted; iteration number N (x axis) vs. differences between approximation expressions and no approximation expressions (y axis) or, the ratios between 2nd order and 1st order of Taylor expansion as y axis (terms lower than 1st orders are eliminated in approximation).

Modeler - e2e simulation engine (Hiro, Bruce, Melody)

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Development of the interface to support the UserDefinedPrimitive (super FUNC_X) has been finished.

Now, various parts of the codes/classes in the simulation engine are modified/developed to implement the UserDefinedPrimitive.

Seismic Isolation

From: Dennis Coyne <coyne@ligo.caltech.edu>
Subject: minutes HAM-SAS 6-Dec meeting

Next week:

1) detailed discussion on system identification & controls development/testing plan for LASTI (all)
2) electronics and software status (Ben, Jay)

ALL PERSONNEL INTENDING TO SUPPORT HAM-SAS TESTING AT LASTI SHOULD ATTEND THIS MEETING

Attending: Valerio, Ric, Dennis, Dave

1) Status at Galli & Morelli

found a hole pattern difference (X & Y) for the balance masses -- 127mm vs 122mm -- had to then re-drill, re-clean, re-bake tried LVDTs -- one had bad contact (being fixed) -- should have all LVDTs connected by tomorrow race track coil warped 1.5 mm after polyimide adhesive cure (bake) -- however fits OK plan to bake whole assembled system on Saturday! crate maker is at G&M today to prepare crate for shipment

Ric has reserved a flight back on the15th

2) Electronics, Software & Controls:

Rolf & Rich were at LASTI last week -- installed the racks, computers, AA bds, ADCs, DC power, network connections, etc.
Ben & Jay are at LASTI this week installing "front end"/analog electronics except for Guralp interface bds (delayed)

3) LASTI Test/Evaluation Plan:
all of the 10 lb. UHV clean masses have been used (and made 'dirty') by the BSC-ISI effort -- Dave will determine what is needed and procure more (perhaps from the observatories? perhaps we need to go out on rapid turn-around order for SS masses and then clean/bake at CIT or observatories)

Dave is putting together an installation plan/schedule to match to the ~4/1 decision date
Ric will have G&M ship all class B tooling (2 sets) to LASTI (metric open-end wrenches, allen wrenches, etc.)

~28 drilled & tapped holes into the bottom of the optical bench, either 1/4" or M6
1/4-20 bolts need to be 1/2" or 3/4" length
MIT will procure, clean and bake these drills, taps & SS bolts

4) Simulation:
adding the triple pendulum cage to the vertical model
getting triple model input from Janeen & Mark
plan to study the back-reaction effect

using tool from U of Milano, Polytechnic, Multi-Body Dynamics (MBDYN) -- stand-alone, compiled code (i.e. not a Matlab or Maple toolbox)
IP leg implemented
GAS & system model pending

Suspension

From: Janeen Romie <janeen@ligo-la.caltech.edu>

*Advanced LIGO *

Working with Norna, Calum & Chris on OMC design tasks. Working on blade cartridge design interface to structure weldment. Working with Norna on a number of issues that have come up, including adding ECDs and adjustable mass.

Talking with Carol, Mike Z, Dave O, Norna and others about LASTI test plan.

Provided a preliminary drawing of the thermal compensation plate to Phil Willems and Gari.

Keeping track of the earthquake stop testing at MIT.

Working with Carol on a number of SUS schedule issues.

From: k mailand kmailand@ligo.caltech.edu

The CES shop is continuing work on the arm style, and LASTI conveyor style, installation tooling.

I have been working with CES on the ESD mask , and with Navitar the coating company re.the tooling requirements for

their process. After the first lapping of the mask it will need to be stress relieved and lapped again to meet the flatness spec.

I'm also doing a preliminary design layout for a suspended cavity beam dump for Mike Smith.

Core Optics

From: Bill Kells kells@ligo.caltech.edu

Main news and item for study/planning this week has been the new data (measurements) on gold coated 1" dia. test pieces under scatter scanning in the OTF. Two conclusions (preliminary) from this are:

1. There does appear to be a qualitative, significant increase in base, background scatter (and hence "micro-roughness" ??) when "superpolished" substrates are HR coated.

2. This marked increase is apparently entirely a top surface effect (ie is essentially the same with or without gold overlayer). Technically, solid quantitative conclusions have been confounded by, first, that the gold coating (being sputtered) seems to add its own high scatter tail; and, second, that our setup (sampling only a tiny solid angle at 45 deg.) has huge sampling statistic/fluctuations. Both these problems are being worked on.

I have resolved, with S. Vyatahcanin, apparent discrepancies in our models of full RC parametric instability thresholds (his "PI in Sig Rec LIGO ifos with Diff ARms, under lsc review posting, My T060159.. coded in Mathematica). We entirely agree, so that the numerical results I presented in early Nov. can be regarded as validated.

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

Pathfinder polishing request for proposal went out this week to ten companies. Phew, thank you Gina. We have a receipt response from 8 of the 10. No questions are forthcoming as of yet.

Drawings and specs for the LASTI compensation plate should be available for review this week.

We have sent an uncoated and an IBS coated optic to CSIRO for an evaporated gold coating. We hope to use the scatter difference between the two after gold coating, to determine the source of the scatter we see in our optics. We have also asked for microroughness measurements before and after gold coating, to help tie our scatter measurements to a different measurement approach.

Auxiliary Optics

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

SLC

I am analyzing the recent seismic motion data taken by Robert Schofield at LHO. The HAM6 flange location has a resonance around 26 Hz with a motion gain factor of approximately 300. This will cause excessive scattered light noise from the Brewster's window mounted at that location. A concept for reducing the noise to acceptable levels is to provide a double Faraday isolator, suspended in the AS path.

Similarly, the BSC chamber has a strong resonances around 30 Hz with a gain of approx 450, and another resonance around 60 Hz with a gain of approx 200. These resonances will cause excessive scattered light noise from the beam dumps mounted to the BSC walls. A concept for reducing the noise to acceptable levels is to suspend the beam dumps in the BSC chambers.

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