Weekly Report for Week Ending October 27, 2005

Highlights	LSC	Administration	Hanford Observatory
Livingston Observatory	Detector	40 Meter	TNI
LASTI	Data Analysis	Adv. LIGO Development	Past Weekly Reports

The LIGO Executive Committee Agenda for Monday October 31, 2005 will be:

(Meeting time: 10:30 am Pacific Time)

1. Announcements

2. Comments on Weekly Report

3. LSC Issues (Saulson)

4. LIGO Lab Operations

Administration (Lindquist)
Sites (Raab, Zucker, Shoemaker)
Commissioning (Fritschel), Detector (Coyne)
Campus Research Facilities

40 Meter (Weinstein)
TN, ( Libbrecht)
LASTI (Shoemaker)

Data Analysis and Computing (Lazzarini)

5. R&D and Advanced LIGO (Shoemaker)

6. CHANGE CONTROL BOARD/TECHNICAL REVIEW BOARD SESSION AS NEEDED

No open change requests

Special Items:

Special Announcements:

Weekly Report Highlights

LSC Issues (Saulson)

Status of Observational Results publications

Just this past week, two Inspiral search papers from S2 were published on the Physical Review D website. "Search for gravitational waves from galactic and extra-galactic binary neutron stars" is now Phys. Rev. D 72, 082001. "Search for gravitational waves from primordial black hole binary coalescences in the galactic halo" is now Phys. Rev. D 72, 082002. These papers join the papers about the S2 known pulsar search (PRL 94, 181103), GRB030329 triggered burst search (Phys. Rev. D 72, 042002), and the S2 untriggered burst search (Phys. Rev. D 72, 062001.)

Other papers are approaching publication. The S3 stochastic background search paper has been accepted by Phys. Rev. Letters, and the S2 Hough transform pulsar search paper has just been accepted by Phys. Rev. D. The S2 LIGO-TAMA burst search paper has reached the stage of responding to reviewers' comments. The paper on the S2 search for binary black hole inspirals has been posted on gr-qc, and is about to be submitted to Phys. Rev. D.

Many more results are in the pipeline, of course, and will be the subject of discussion at the November LSC Observational Results meeting at MIT.

LIGO Laboratory Administration (Lindquist)

STATUS OF LSC MOUs (Lloyd)

Completed changes for IAP, IUCAA, Michigan, Moscow, NAOJ, Oregon, Penn State, Sannio, and SLU. They were posted and submitted to Saulson for signature.
Submitted Goddard, Trinity, and Rochester to Saulson for review.
Working on GEO600 and Northwestern changes.

Non-LSC MOUs (Lloyd)

Received an MOU from outside the LSC from the Experiment "Ricerca di Onde Gravitazionali" (ROG) of the Istituto Nazionale di Fisica Nucleare (INFN), submitted by Eugenio Coccia. This MOU was formatted and posted and submitted to Saulson for signature.

SITE TELECONFERENCE (Lindquist)

A site teleconference was held Thursday, October 27, 2005. The following issues were among those discussed:
Operations Finances – During October we project $2 million in costs of which $1.2 million will be charged against FY 2005 accounts. So far we are consistent with estimated $2.5 million residual FY 2005 charges in FY 2006.
Commingling Taxable and Non-Taxable Procurements – Ed Jasnow has been requested to prepare a note for distribution regarding the commingling of taxable and non-taxable items on a purchase order (action 132). If materials to be sent to Caltech, which are taxed by California, are mixed with materials to be sent to the sites, which are not taxed by California, the result will be the application of California tax to the entire order.
Visitor Housing in Louisiana – The temporary housing situation is still stressed. Livingston has been able to accommodate enough people to support commissioning, but larg gatherings are still not a good idea. Livingston may attempt to expand the current facilities.
SEC Data for LSU – M. Zucker to address issue with J, Giaime. Expect to discuss needs with EDR Friday, October 28 and talk to LSU next week.

The list of assigned actions updated through October 27, 2005 will be found Here.

PROPERTY MANAGEMENT (Chargois)

>From: Ed Chargois <chargois_e@ligo.caltech.edu>

Provided assistance to the Detector Group (C. Torrie) with packing and shipping of ten (10) machined stainless steel parts to MIT (L. Ruet). Account Number P204317.
Assisted Caltech's Property Services Division (T. Benjakalykorn) with the required information to complete the Federal Automotive Statistical Tool (F.A.S.T) Report.
Assisting the Detector Group (H. Armandula) with arranging the shipment of six (6) Optic Transit Cases to LHO (D. Cook) for storage. Account Number LIGO.TEC 1.3 NSFLIGO.FY02ON.

DOCUMENT CONTROL CENTER (Turner, Mak)

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

No report.

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

Completed processing presentations from the 2005 Gingin Workshop on GW Detection.
Processed and distributed two DCN's.
**Scanning Project Update** - Progress continues on Larry Jones' boxes of files. To date, we have 5 of the 16 boxes scanned.

Week Ending

10/27/05

Out

Packages

Faxes

FINANCIAL SYSTEMS (Cronin, Brambila, Kaufman)

>From: "Cronin, Holly" <Holly.Cronin@caltech.edu>

For ACCOUNTS PAYABLE HISTORY DATA Press Here.

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

Completed change order #1 to Sun Microsystems S001939 for the return and replacement of the monitors. The monitors have been returned today by LLO to the vendor for credit. The replacement has shipped out.
Completed the new subcontract for the construction of the SEC at LLO.
Completed change order #2 to JPL and submitted the change to JPL and appropriate parties.
Completed the Arland contract and have routed it for the appropriate approvals. Waiting for the return of the signed contract package for distribution.
Working on both subcontracts to Limerick and Filehold Systems.
Working on the MIT change order.
Working on closing several blanket purchase orders which were not extended for FY2006.

>From: Florence Kaufman <fkaufman>

Worked on updating reports for October. I am reviewing the expenditures made in October to determine whether they should be charged to the FY2005 Award or to the FY2006 Award. If the expenditure was for services rendered or goods purchased prior to September 30, 2005, it is charged to the FY2005 Award. Of the approximately $2 million of expenditures recorded thus far in October, $1.2 million will be charged to the FY2005 Award.
Prepared and submitted a schedule, at the request of the Sponsored Research Department, showing how the $16 million awarded to date for FY2006 should be recorded in ORACLE.
Noted that the telephone expenses paid to AccuConference for conference calls were all charged to the Business account instead of to the accounts indicated on the invoices. Cost Transfers will need to be submitted to charge the expenditures to the appropriate POETAs.
Assisted Terry Gunter with some issues related to the Hanford conference account.
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>

Nothing significant to report.

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

The contract for the LLO Science Education Center was executed by Caltech on October 25, and sent to the contractor, Cangelosi-Ward of Baton Rouge.
A kick-off meeting on the LLO SEC was held on October 28. Present were representatives of Cangelosi-Ward, his subcontractors, Eskew-Dumez-Ripple, the architects, and LIGO representatives Mike Zucker (phone), Allen Sibley, and Ed Jasnow (phone). The agenda covered many of the conditions of the construction as well as the schedule. The original schedule of August 1 is no longer achievable, but the contractor may be able to make the third week of September, 2006.

SUPPORT (Baldon, Hiroto, Lloyd)

>Irene Baldon

No report.

>Julie Hiroto jhiroto@ligo.caltech.edu

No report.

>Dorothy Lloyd

Processed the usual invoices for payment and followed up on problems. Updated contract invoice log book.
Processed the usual requisitions for purchases over $10K and standard POs, as SOS buyer, for those under.
Jim continued with data entry in the LIGO database and helping out in the DCC.

PROPOSALS and REPORTS (Lindquist)

We have received $16 million representing the first half of the FY 2006 funding for LIGO Operations. Florence is providing the Office of Sponsored Research a “resume” distributing budget to the various operating accounts.

The NSF has requested that we submit the Cangelosi-Ward subcontract for the Outreach building electronically via FastLane. This information has been entered but not submitted yet.

CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)

No open change requests.

HUMAN RESOURCES (Akutagawa)

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

A Staffing Committee meeting was held on Monday, October 24. The minutes and action items have been posted on the SC web page.
All files for the Staffing Committee are up-to-date and posted on the SC web page.

Quality/Safety (Tyler)

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

No report.

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

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

With one week to go prior to the start of S5, efforts on commissioning are threefold: i) to resume stable, reliable high power locks on both instruments, which has been lacking over the last month and the last seven days in particular ii) complete remaining commissioning tasks such as the implementation of the new timing system, and iii) housekeeping and cleanup chores to bring the lab to a state of readiness for the long S5 run.

Commissioning highlights are bulleted below:

last week it was noted that protection circuitry was added to LOS modules; summary data on that were added to the elog
hamster houses that prevent most dust from falling through beams on the antisymmetric beam paths were re-installed on ISCTs 4 and 10
lots more excitations have been added to AWG for the science run... these include the typical calibration excitations (3), the new photon calibrator ones (2), the addition of the ETMY_EXC excitation for some hardware injections, and those associated with the new gentler 1pps ramp (sinusoids at 960 and 961Hz). AWG cpus have been shown to handle the additional load; slots too have been added.
better living through automation: remote optical lever centering now available

4K IFO

ASPD2 was swapped (reported last week but now elogged). This is a new-style PD (the only one of the four on the table, the others are old), so we will be on guard to see if any latching problems are evident in AS_I, as was the case previously when a new diode was tried. Elliptical burn spots were observed on the old diode, although it is curious that the major axes are perpendicular.
One of the observations on H1 this week has been alignment instability presenting as a wobbling AS spot on video, but a reasonably stable REFL beam. WFS have been suspected and unity gain frequencies were measured and tweaked. Optical lever compensation problems were noted at LLO and this was suggested as a possible culprit here.
like the 2k previously, ISCT4 received 2" supermirror optics
ongoing crashes of sequencers and IOCs that impacted uptime led to a divorce of TCS and power sequencers
bi-stable states in the 4k power were observed - configuration control through multiple paths, boths sequencers and scripts, can lead to 5% power level differences. These simply have to be chased down before S5
like the BS last week, the RM was now better compensated and the PRC correction to DARM should be cleaner

2K IFO

high frequency noise on the 2k periodically gets bad, then good again, with a broad hump from 40-160Hz
unnecessary blown fuses led to this power supply modification, in which the fuse holder is separated from the all-too-hot power receptacle
the fibre-coupled timing system was installed, and some details are shown here
ASPD3 was sick in that it loses 40% of its gain and phase shifts a wopping 53 degrees when the IFO goes to full power. In bench tests it was noted that the DC compensation circuit not trimmed and at 50mA the phase began to drift strongly. Repairs were made and the ASPD reinstalled.

DAQ/CDS

Monday marked the typical barrage of software updates
for S5 hardware injections: an ETMY excitation point was added
the much anticipated replacement for 1pps ramp was installed and testing has begun
phase calculations for the AS_Q/I fast channel were shown to be problematic; this resulted in a code mod and now all looks good

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

L1 Interferometer (Zucker)

We completed mini-run M8 this weekend, mostly successfully. A good fraction of DMT monitors functioned well and feedback has been transmitted on those that didn't fare as well. However, machine uptime was affected by elevated microseism from Hurricane Wilma, as well as some general "commissioning fragility".

A primary component of the latter was weakness in the WFS servos, which was addressed this week by new filters and gain optimization.

Laser trouble reported last week and the week before is evolving, but persistent. The unusual beam shape of the post-post-cleaning MOPA realignment has proven difficult to match to the PMC, so net transmitted power is less than needed to make our sensitivity target. We are patiently waiting on JDSU to finish rebuilding our spare laser and ship it to us. Until it arrives we're holding off any further invasive diagnostics on the installed unit, since everything we do seems to make things worse. No LIGO without the L.

A framebuilder update and new CDS realtime code have brought us up to spec for S5. Lots of patches and fixes and M8 inspired tasks remain, but CDS software is mostly over the hump and ready to run.

A very subtle "bug" was discovered in our main demodulator circuits, which are mostly passive (and previously considered elegant, simple and bulletproof; is nothing sacred?). Their noise was found to depend nonlinearly on RF carrier level. The esteemed designer is looking into the issue on the test bench. Meanwhile boards were reshuffled to place those least afflicted in the most critical locations, and RF phases were adjusted to put each one's best foot forward.

CDS (Bogue)

Worked on troubleshooting our problems with the atomic clock. It needs to be shipped back to the manufacturer for repair. Szabi arranged a loaner for us to use while ours is out.
Spent some time with John Z. while he was here. The dmt box with the most problems is pickerel. John and I rebuilt it starting from my jumpstart base image. It seems clear at this point that the biggest problem with this box is the epics ioc that is running on it. I will need to revisit this issue at some point, but it is in a holding pattern for now.
Spent some time with Keith Riles and got his todo list for sci mon support.
Rewrote the environment for ops. This both streamlined the environment and unearthed some previously unforseen problems. Right now we are probably at around 90% sure of the new environment. Most of the scripts have been exercised and the biggest glitches have been fixed. Thanks to both Tom and Matt Evans for their help with this.
We had a big code drop on wed. We should be in good shape for S5 now.

Computing and Network Security (Roddy)

The Sun Java Enterprise System saga continues. I think I have the issue nailed down and will know shortly with a little more testing. All of this week has been spent troubleshooting the JES issue other than several miscellaneous tasks like ordering hardware, a laptop, etc.

CDS code support (Khan)

No report.

Education and Outreach (Thacker)

Saturday, 22 Oct assisted in conducting teacher Professional Development Workshop for Tangipahoa Schools Math Science Partnership through Southeastern Louisiana University. 29 middle school science & math teachers attended.

Monday, 24 Oct conducted teacher Professional Development Workshop for LSU's Cain Center Math & Science Partnership. 14 middle school science/math teachers from East Baton Rouge Parish attended.

Thursday, 27 Oct met with Doyle High School physics teacher to establish connection with that (local) school. Met with the principal who is quite interested in the school pursuing some kind of closer relationship with LIGO..

Site Safety and Security (Riesen)

Working on stopping the PSL acoustic enclosure door from closing "bounce", hoping to minimize the LSS from activating and closing the laser internal shutter.

The site speed limit & quite zone signs have been ordered and should arrive next week. (the guard shack electrical work has been completed) Found no laser safety nor site safety concerns this reporting period.

Janeen Romie completed her laser eye exam and I will order prescription laser eyewear when I receive the proper paperwork.

New laser safety glasses cabinets are being installed at the End stations, LVEA, and the HPLF. This should help users find appropriate laser eyewear when entering a laser hazard zone.

The LSS "bugless" software should arrive next week and will be installed asap after arrival.

HPLF (Franzen)

HPLF news: Packed the high power laser in order to send it to University of Florida. There it will be used for high power Faraday Isolator and EOM tests by visiting scientists from IAP, Russia before being returned to LLO in about two months.

General Computing (Giardina)

visiting Caltech this week, met with everyone, toured the LIGO sites on campus
overview of GC at Caltech
CDS DNS entries/modifications per request from Lisa B.

AdL SUS/SE Mechanical Engineering (Spjeld)

Quad SUS Installation Fixtures

completed redesigning parts and assemblies, submitted approx. 10 drawings to Calum for machining on 10/25
meeting with Calum and Ken Mailand on 10/25 to discuss manufacturing drawings
revised support table brace assembly, resubmitted drawing and also finished drawing for lift table drive interface washer
currently uploading SW files to vault
revision of assembly drawings in progress

LDAS/Condor and data analysis (Yakushin):

1) Finished upgrading the cluster to FC4. There are 6 computers which had hardware problems and are not fixed yet: nodes 89, 90, 173, 191 cannot use their CD drives; node122 would not boot, most likely power supply problem; node 210 died with a kernel panic twice after dd was started.

2) Disk 5 @3510 failed. The replacement was ordered.

Initial LIGO Detector Science & Engineering (Coyne)

CDS

see also the CDS weekly meeting minutes in the commissioning archives

CDS Software

Rolf Bork

Made a fix to the fast ADCU code for both sites.
Last code download to LLO prior to S5 was made yesterday. This included:

o Latest ETM controller code to properly filter decimate DAQ channels at 256Hz

LSC code w/shutter control output.
Latest Framebuilder code.
RBS software with input gain and on/off switch.

CDS Hardware

Jay Heefner

Refl Beam Stabilization: Boards for spares are being stuffed.

Ben Abbott

Fast Shutter

I have modified the machined shutters, and am finishing up the wiring of the electronics parts. All of the units will go through an extended reliability test, and then will be sent out early next week to the sites.

ISS PDs

I have written up the test procedure for the ISS PDs, and am just finalizing their packaging and paperwork. They will be sent out to the sites sometime today or tomorrow.

DMT

John Zweizig

This week we had a successful mini-engineering run at LLO (M8). After installing all the software changes resulting from the M7 run at LHO, we performed further tests of the software and configurations at LLO. A few new bugs were discovered and fixed including a lack of validity checking in the Monitor data request handler and an unresolvable URL in the trigger xml files. Other bug fixes and upgrades were made to individual monitors.

PSL

PeterKing

NPRO S/N 393 was shipped off to JDS Uniphase to be used as a replacement MO for the 10W laser that JDSU is refusrbishing. (The new NPRO from JDSU's production line did not have adequate performance.)

40-Meter Interferometer (Weinstein)

Osamu completed and submitted the talk he gave at Amaldi 6: "Lock Acquisition Scheme for the Advanced LIGO Optical Configuration, for the proceedings of the 6th Amaldi Conference on Gravitational Waves", Osamu Miyakawa, 9/20/05, pdf.

Osamu will give a LIGO/Caltech seminar on recent results from the 40 meter, on November 1, 11 am in the SCR.

IFO commissioning

Osamu realized last week that the reason we aren't seeing the optical spring peak in the DARM transfer function may be because we were locking the signal recycling cavity in the wrong place, on the "other side" of the spring (so that it's an anti-spring). He flipped the sign of the SRC servo loop, and then found that he needed to flip the sign of several more loops before he was able to regain full lock in the AdLIGO configuration. And there, in addition to the clear RSE peak at ~ 4 kHz, was a beautiful optical spring peak at ~ 40 Hz!
Rob, independently, arrived at exactly the same set of sign flips to achieve lock in the optical spring configuration.
In this correct locking point, the spot at the asymmetric port is now much nicer. The spot is much rounder, and the optical spectrum analyzer shows that the carrier is now nearly dark. It looks like the correct locking point exhibits "mode healing", while the wrong locking point exhibits "mode damaging". This is not yet understood.
It appears to be more difficult to lock in the "correct" point, which Osamu theorizes is due to its proximity to other, incorrect and less stable locking points. It is still possible to lock at the wrong point; it is clear from the optical spectrum analyzer at the asymmetric port when this happens, and one has to break lock and try again. We need to develop a more reliable procedure.
Rob and Osamu use different procedures, scripts, and make different use of the analog common mode servo during their lock acquisition procedures. They will work together to find a common procedure that makes use of the best benefits of both.
Dan and Monica will calibrate the DARM channel and take a calibrated noise spectrum, and then develop the noise model.

IFO Modeling

Rob used FINESSE to model the DARM transfer function at the correct and "wrong side" SRC locking point, and gets excellent semi-quantitative agreement with the measurements. He then modeled the CARM transfer function with various offsets, and again sees excellent agreement with the measurements, including clear optical spring peaks at various CARM offsets. We continue to learn more about the complex optical configuration that we've built.
Monica has implemented Hiro's new e2e dual recycling cavity module into her optical model and is testing and debugging it.
Monica is gearing up to study the optical spring in her e2e optical model.

DC Detection Development

Mike Smith completed and submitted to the DCC a drawing package for the 40m output mode cleaner. The drawings were also submitted to CES for machining. The OMC will be built out of copper, to provide damping of its vibrational modes.

Electronics, Controls

Dan and Ben installed and commissioned new RevB coil drivers for the three mode cleaner optics, MC1, MC2, and MC3. Ben put in the new 4116, ran a cable, did all the cross connect wiring, changed the database, and fixed the screens. These modules provide separate paths for the bias voltages and the drive voltages to the coils. Now all 10 suspended optics at the 40m use these coil drivers. Dan transferred all the pitch and yaw biases from the drive to the bias paths, re-established the mode cleaner alignment, and made sure the mode cleaner locked happily.
Now that we have RevB coil drivers on the MC optics, Dan can proceed to diagonalize the coils and output matrix to decouple POS, PIT, YAW without fear of introducing misalignments.
Dan will collect data on the oplev noise to see if there is a significant contribution from the stack motion. If so, we will want to move the in-vac mirrors used in the oplevs so that they are mounted on the chambers rather than on the seismic stacks. Steve continues to develop plans for this. First priority, at the next vent, is to adjust the OSEMS on the BS, PRM and SRM suspensions to minimize bounce mode coupling, and diagonalize these suspensions better.
Ben is preparing fast-triggered mechanical shutters for the sites, and will make a couple for us.

Thermal Noise Interferometer (Black)

No report.

LASTI (Ottaway)

LASTI Mechanical Tests (Mittlemann, Ruet, Ottaway, MacInnes)

We spent some time characterizing the best place to lay our optical fiber that will couple the PSL table to the Xend HAM triple experiemnt. Encapsulating it in an air tight stiff structure should give us appreciable isolation from ambient acoustic noise.

Ponderomotive Squeezing Experiment (Corbitt, Ottaway, Innerhofer, Mavalvala)

Continued measurements of the optical spring and parametric instability. We resolved the discrepancy between the theoretical and measured optical spring frequency by accounting for the VCO path gain.

We implemented an analog division circuit to divide the PDH error signal of the cavity by the transmitted power. This allows us to detune the cavity further from resonance and retain linear error signals.

We tuned a second notch filter board (D000053-00) to 668 Hz to suppress a violin mode that is sometimes excited.

We measured the transmission of the cavity end mirror to be 9ppm.

New ITMs were received from REO.

Mini-suspension OSEM design was finalized, RFQs have been sent out.

Data Analysis and Computing (Lazzarini)

Simulation and Modeling (Bhawal)

e2e-3.0.2

(Hiro) e2e-3.0.2 has been released. A few minor issues were found after the release, and 3.0.3 will follow soon.

FFTprop_v1.0

(Biplab) A new version (1.0) of FFTprop is now available at http://www.ligo.caltech.edu/~bbhawal/FFTprop/

This Matlab code can propagate light using both Adaptive-Grid and ordinary FFT method. New addition is the cavity calculation that uses these methods. Three examples are there: (1) Simple propagation of beam from COC to Table location or, backcalculation to know beam at COC knowing beam profile at a table location (2) Calculation of steady state light in AdvLIGO cavity when a pure Hermite-Gauss mode is injected into the cavity (3) Same as 2 except this is for Laguerre-Gauss mode.

Simulation of 40m Advanced LIGO interferometer

(Monica) The dual summation cavity has been implemented in the e2e 40m package; the debugging of the package including this new module is almost complete. Simulations of optical springs effect will be performed soon as well as simulations of locking strategies.

Alfi

(Melody) Currently working on a new feature to swap different nodes without removing the connections (PR 280).

Data Analysis Activities (Lazzarini)

Mandic:

I ran the all-sky stochastic analysis on S4 H2L1 data with 192-sec segments and at 1/32 Hz resolution. I post-processed it using bad GPS times calculated using 60-sec segments, which should better capture noise transients. I repeated the same postprocessing on H1L1 data. Finally, I combined the S4 H1L1 and H2L1 results.

I calculated the H2L1 coherence at 1 mHz resolution, and the 1 Hz harmonics problems is present, but much smaller than for the H1L1 case.

I have also written a first draft of the paper discussing these results, geared for the ApJL.

Shawhan:

Did a major re-organization of LIGOtools software, with various improvements and bug fixes.
Helped Alex Dietz with inspiral veto studies.

Sutton:

This week I've done further editing of the LIGO-TAMA bursts paper in response to comments from Keith Riles. I'm also working on the cheese paper, concentrating lately on understanding the uncertainty principle for real 2-polarization signals. The network analysis group met plan testing and simulations of our pipeline, and to review Tinto's Bayesian formulation of the detection problem. Finally, I'm running jobs to test banks of FIR filters for GWB detection, generating ROC curves for various fcombinations of filters and GWBs.

LIGO Data Analysis System

Software Systems (Blackburn)

LDAS

The LDAS 1.8.0 release candidate at Livingston has experienced many lock ups in the diskcacheAPI. The last 7 lock ups that occurred all had the same stack traces and thread allocations. This does indicate that there is something about this combination at Livingston that is causing problems for LDAS. Several attempt as making the code more robust did not yield a stable diskcacheAPI. As of last night, the three directories that do not exist on physical media but were in the MOUNT_PT list variable have been removed from the MOUNT_PT list. Since the change, the diskcacheAPI has not locked up. It will be monitored this weekend to see if this configuration change does stabilize the diskcacheAPI. [It should be noted that this particular issue has not been seen on any other running LDAS system, including LHO using the pre-release code base.]

On LDAS's main development system (ldas-dev) there were too many versions of ldas software. Investigation of the issue revealed that a cron job entry was absent. With its re-introduction, the system once again purged all but the last 10 days worth of builds.

Cleaned up several coding issues in the controlMonitorAPI and managerAPI associated with the proper use of TclGlobus.

Updated createRDS scripts to perform RDS generation more in line with the method used by Greg Mendell's script for the purpose of testing. This included adding a loop for generating the L4 RDS frames.

Ran system test for ldas 1.7.78 and updated cvs with test results. Set up Greg's LHO createRDS scripts to run on cit and dev.

TCLGLOBUS:

Completed GT XIO client/server open and close functionalities using Tcl channel. I have a simple test case to verify the functionalities.

Still working on blocking XIO read and write functionalities. Having an issue passing the data from Tcl application layer down to Globus layer. The data from Tcl app layer is chopped off into a segment of 4096 bytes before calling GT XIO blocking read/write functions.

Began generation of the TclGlobus release 0.3.0 rpms for FC3 and FC4, for both GT4 and GT3. Will also provide a patch file for GT4 on Solaris 10 and the documentation for building from source code. This activity is at the request of the DASWG.

OSG/GRIPHYN/IVDGL:

OSG Council met this week to discuss content of "Plan of Work" to be presented to the NSF and the DOE this week. LIGO contributed significantly to the writing of this document through member representation on the Interim Executive Board, the OSG Council and the LSC Computer Committee.

CIT_CMS_PG installed the VDS components for the LIGO applications. Testing the LIGO Inspiral pipeline on CIT_CMS_PG has demonstrated a data transfer rate from the CIT repository of 9 GB/hour while moving the 38 GB dat set.

Using the VDS property vds.transfer = Chain supports computation while gsiftp transfers are occuring.

DAG node submissions to CIT_CMS_PG have aborted with rescue DAGs in approx- imately four (4) percent of the submissions to date. Testing with gsiftp v2 may improve these statistics and are planned.

Nebraska OSG Production system administrator suspects that the LIGO Inspiral workflow may have crashed the head node at that site. Testing has been suspended to Nebraska due to this report and because the data transfer rate from the CIT data repository has never exceeded 2 GB/hour which will be too slow for effective demonstrations at SC2005.

UCSandiegoOSG_Prod site has asked for a number of site dependent changes to the Inspiral work flow for storage managment of the 38 GB data set at UCSD and the location where executables and data products are placed on worker node disks. As these requirements are not supported in the disk placement model of VDS, hand- modification of the gencdag generated submission scripts and input files will be necessary to meet UCSD requirements. These requirements are under study.

Ewa Deelman from the ISI VDS team visited this week. As a best practice, she recommended against pooling multiple sites for processing an individual Inspiral pipeline as this requires distributing data to the N sites in the pool. A better practice is to map each Inspiral pipeline to a single pool during gencdag plan generation.

Techniques for third party transfer of archived gravity wave files are being explored with the VDS team so that this technique can be used as an alternative to having the OSG cluster pull the data with the jobmanager-fork.

Successfully generated a voms proxy certificate with the LIGO voms server.

Performed a yum update and reboot of all nodes of LIGO-CIT-ITB.

Hardware Systems (Anderson)

Caltech

(Dan Kozak)

Set up (with Igor's help) the use of distinct fibres for metadata & /export from the 3510 at LLO.
After manually unloading two stuck tapes from the 9940B tape drive in 0,0,10,12, I had STK come out and replace the drive.
Assisted with the Solaris 10/SAM-QFS 4.4.5 upgrade at LLO & LHO.
Figured out that -fillvsns (maybe in combination with -drives 2) was causing data to be written to too many tapes at LHO.
Repacked tapes at LHO to fix this (still in progress).
Made sure that samfsdumps were running every night at LHO/LLO after the upgrades.
Modified the LDR local storage module at CIT to correctly handle L4 frames. Cleaned up incorrectly filed L4 data in RLS.
Worked with Sun to address the problems with SAM-QFS (stat()ing certain files causes reboot & umount of QFS filesystem causes reboot). 4.4.5 patch fixes first problem, patch for umount problem coming in 4.5. Ongoing.
Configured LDR to transfer M8 data to CIT.
Gave Dwayne intro to fibre channel, SAM-QFS and LDR.
Started data integrity check of M7/M8 data (ongoing).
Worked with Steffen to allow him access to CIT data via LDR.
Restarted Astrowatch data flow via LDR.
Got grid intro from Duncan.

(Phil Ehrens)

Worked with Ed Maros to debug intermittent frame file write failure. Currently testing a non-threaded frame writing strategy for the Tcl layer.
Finished upgrading ldas-sw-backup.
Investigated cause of failure of diskcache API at LLO. Could not detect anything indicative of the failure mode.
Installed hostcerts and keys for user ldas gateway machines at all sites (except MIT).
Began upgrading John Zweizig's desktop machine, Atlas to Solaris10. The Solaris 10 OS requires >4 Gb of disk space, which Atlas did not have. Larry provided a Sun Blade 1500 to replace Atlas and I am currently configuring it.
Attended Techmart training at the Caltech ATC office.
Met with Duncan Brown and the sysadmin staff to discuss the installed GRID related tool suites, thier locations on the LIGO computers, and their configuration.

(Erik Espinoza)

Updated LLO sendmail configuration for all public interface machines.
Resolved architecture related issues with v40z.
Writing Bugzilla for v40z FC4 SCSI driver problem.
Updated Linux sendmail config for machines behind ldas-dev, working on new solaris config.
Assisting LLO with package synchronization.

(Stuart Anderson)

Working on problems introduced by the recent Solaris/Fedora Core/LDAS/LDR upgrade.
Provided some training for Dwayne Giardina.
Working with CIT engineers on the final configuration of the renovated computer room in Synchrotron.
Working on the large cluster CIT procurement.

MIT

(Keith Bayer)

Build shelves in order to move DMT nodes (lancelot, enoki, and old linux grape cluster nodes) out from the optics lab and into the pump room.
Installed Solaris 10 on E450 trying out disksuite utilities.
Swapping out failing data disk on cluster node36.
Turned on and minimally tested Foundry switch from LLO.

Livingston

(Igor Yakushin)

Finished upgrading the cluster to FC4. There are 6 computers which had hardware problems and are not fixed yet: nodes 89, 90, 173, 191 cannot use their CD drives; node122 would not boot, most likely power supply problem; node210 died with a kernel panic twice after dd was started.
Disk 5 @3510 failed. The replacement was ordered.

(Dwayne Giardina)

travel to CIT.
Overview of LDAS with Stuart Anderson.
Overview of SAMQFS with Dan Kozak.
Overview of Grid/Condor with Duncan Brown.

Hanford

(Greg Mendell)

Level 1, 3, and 4 RDS data for M8 was generated at LLO. The Level 3 and 4 data has been transferred to CIT. The raw data will be transferred later this week. The data exist from GPS time 813948928 = Oct 21 2005 11:55:15 CDT = Oct 21 2005 16:55:15 UTC to GPS time 814079968 = Oct 23 2005 00:19:15 CDT = Oct 23 2005 05:19:15 UTC. There are no gaps in the raw data. There were some RDS job failures during the run due to an unknown bug that caused the diskcacheAPI to hang at times at LLO. This is being tracked down this week. The createrds driver script was updated to better handle the job failures, and as a result there are no gaps in the RDS data, and all the M8 data was successfully reduced. Further testing to fix the bug discovered during M8, and to test the S5 channel lists, will run this weekend.

(Ben Johnson)

Most of the old nodes at LHO are up and running user jobs on FC4. Some are still down, reasons unknown at the moment.
Got L1-L4 publishing up and running at both sites again. Trend publishing delayed pending bug fixes, L0 and /frames publishing should be up today with the start of realtime segment publishing.
Contractors removed the top of the 22-Ton Liebert plenum. Building noise was reduced only slightly. The contractor has still not unhooked the 5-Ton Leibert's condensor from the pipes/concrete. Their boss is on vacation.
Continuing to full cable up the 70 new nodes with the goal of installing a working image of FC4 today.

General Computing (Wallace)

MIT

(Keith)

Turned on WEP for wireless hubs in NW22
Spec'd out and purchased new laptop for scientist
Installed solaris 10 on test node
Built new firewall router / gateway for local cds network
Ordered various spare parts etc

Livingston:

(Dwayne)

visiting Caltech this week, met with everyone, toured the LIGO sites on campus
overview of GC at Caltech
CDS DNS entries/modifications per request from Lisa B.

(Shannon)

The Sun Java Enterprise System saga continues. I think I have the issue nailed down and will know shortly with a little more testing. All of this week has been spent troubleshooting the JES issue other than several miscellaneous tasks like ordering hardware, a laptop, etc.

Hanford

(Christine)

Still working with Gina to get a contract written for the GigE WAN connection. Gina was able to get PNNL to agree send her a detailed cost list.
Tried to get a Solaris 10 AMD computer set up as a NIS+ client. The keyserv is not able to authenticate with the NIS+ server. Also had a problem in that Solaris 10 doesn't automatically start up services like the nis_cachemgr and keyserv.
Still working on upgrading the license server. I'm building it on a new V120 computer and then will just swap the old computer for the new one. This avoids lengthy down time.
The /tmp directory on the mail server was full which prevented anyone from getting their mail. It also prevented me from logging in at the console. A re-boot cleared the directory and everything is working again.
Provided phone support for one user who needed to set up a remote computer to get his email from LHO.
Investigating a "mystery" email for another user. The email doesn't have a subject or from line and it keeps being re-sent to the user.

CIT

(Mike)

Ken Mailand: Worked on transferring over his data from the old Engineering workstation to the updated Eng. workstation located on the 2nd floor of West Bridge. I also am looking in to a video issue on Ken's workstation, regarding a video driver when running Solid Works.
Burning Ghost backups of NTSRV's to DVD, to get ready for end of month backups.
Working on a Server for Larry Wallace. This is a Raid Array system that has some bad hard disks that are making loud clicking noises. They were also coming up with bad sectors. I have replaced these drives and sent back the bad ones to the manufacturer to get them replaced. Once I swapped out the drives I reloaded this server with Fedora 4.
Spam Filters: Continuous work with Larry, searching for false positives in the Spam Filters.
Setup some user account and added additional wireless Mac addresses to our Access Point list.
Patrick Sutton: Called Dell to get his hard disk replaced due to bad sectors on his current hard disk. I placed this service request a week ago and still have not received his replacement drive. I called Dell again this morning and they claim there is a problem in their warehouse, and they are shipping one out today. This is very time consuming process talking to Dell's tech support to make this happen.
Other onsite/phone misc. user support.

(Veronica)

LIGO: Webcast /videotaped a suspensions meeting Tuesday morning. Compressing the footage for streaming. Updates to the NSF review website. Posting documents for the review. Updates of the PAC meeting website, installed a password-protected area. Did some troubleshooting of the machines at the SCR: Installed the patches on one and ran a scan on both but it didn't pick up anything. Updates to the MIT seminars webpage.
LSC: Updates of the November meeting website. Updates to the results page.
Project Science: User support. Website updates, posted the remaining presentation from the last workshop.

(Christian)

3rd flr W/B - Replaced toner cartridges on HP 5500 printer
Millikan - Replaced toner cartridges on HP 5500 printer.
Working on building a WSUS server. WSUS is a web-based application that integrates with Windows' built in Windows Update client to form a managed patch distribution system for Windows desktops and servers.
Other misc.: Continued onsite software/phone support.

(Larry)

Worked a number of procurement issues. In the process of buying equipment for the 40M, DCC and a couple of the users. Still working the Caltech SUN contract. Received a number of items and have them distributed.
We've started installing the new quad CPU dual core sandbox units. We should have the first one on-line by next week. We need to make up a shelf for one of the units to still be installed in the rack. Both units arrived with SUSE installed. The companies were unable to get Fedora Core 4 and 3 to work on the units.
Installed another network switch and KVM unit in the extension computer room.
Supported a couple of meetings this past week. One using the teleconference system took more time than planned. We needed someone to control the phone system, to mute out locations when they were not needed in order to keep feedback down to a minimum. The Italian group participating were able to observe the conference via the webcam which worked out well once the lighting situation was taken care of.
Resolved a couple of printer issues for different people. Everything from paper jams to updating their printer drivers.
Copied data off of an old Sparc Classic running SUNOS 4.1 (being used by the PMA group). The unit was still running solid after all these years. The configuration of the unit made it difficult for the enduser to get the data he needed but with a few modifications the data was burned to a CD and now the unit can be turned over to Caltech.
Made a number of modifications to user accounts as well as setup a new user.
Continual work on the spam filters. Just of note that the top spam relay systems we are getting spam from are Caltech and UWM machines, which have been whitelisted because of the amount of legitimate e-mail we do receive from those machines.

Mail Statistics Oct 20-26, 05

Mail Statistics	October 20-26, 2005
Rejected Messages	17.706
Virus Messages	679
False Positives
Accepted Messages	16,122
Total Messages	33,828

Advanced LIGO and Supporting R&D (Shoemaker)

Advanced LIGO Systems

Systems

from Dennis Coyne

See also:

AL Systems web page

AL Systems email archives

Records Of Decision or Agreement (RODA)

See also the RODA status web page

nothing significant to report

Requirements

nothing significant to report

Interface Issues

See also the "Interfaces" section of the AL Systems web page

nothing significant to report

Systems Design/Support

nothing significant to report

Vacuum Compatibility & Preparation

AdL SUS SEI and DAQ

The boards for the Anti-Image filters chassis and Anti-Alias chassis have been received and will be sent out to Screaming circuits for stuffing on 10/28. The stuffed boards should be received back by 11/4. Once received they will be installed in the chassis and tested.
Jay and Alex will be visiting LASTI starting Nov 14 in preparation for the quad and SEI controls installation. Racks have been requested from LLO.

Seismic Isolation

From: Ken Mason <kmason@ligo.mit.edu>

Advanced LIGO Seismic Structure

A purchase order was issued to Limerick Machine for the actuator mounts and locator/lock subassemblies.

The hole pattern on the drawing and model for the optics table was changed from 1150 1/4-20 helicoil inserts on a 2x2 pattern to 4400 3/8-16 helicoil inserts on a 1x1 pattern. An amendment to the purchase contract has been issued.

A visit was made to Arland Tool to go over the contract and technical issues with the large machined parts. All the material has arrived and engineering is currently creating CNC programs.

Joe Giaime <jgiaime@ligo.phys.lsu.edu>

Agenda for the weekly SEI telecom

Friday, Oct 28, 2pm Eastern, 1pm Central, 11am Pacific time

Announcements

BSC SEI status, Ken/ Dennis

PO issued for actuator mount / locators assemblies.
PO issued to Nor Cal for pod enclosures. Vender will leak-check each item before shipment.
Amendment issued to large part vender to account for 1" x 1" hole pattern on optics table. Extra cost is $10k.
Drawings prepared for Jay, so he can design the internal pod harnesses. Jay still needs to see the devices. They should be shipped to him in a week or so.
DCNs in preparation for all of these changes.

BSC work (Rich M)

FIR filter trainer simulator in simulink is running. Next step is optimize the filter parameters by using the simulator. After that, we can try on the hardware.
LHO work: STS-2's placed on crossbeams at end stations. He is trying to close 1-DOF active isolation loop. They might also consider putting the STS-2 on the floor, in a box, and trying sensor correction to the fine actuators, added in with tidal.

HAM control with VME (Pradeep)

Working on control law design for HAM HEPI.

ETF platform work - Matt DeGree

Stage 1 control laws being constructed. Pitch and roll implemented. The other four under way.
William preparing temperature sensors to be installed in ETF. Dennis has an Algor model that can be used to interpret the measurements, after some modification.

Seismometer work - Aaron

Ordering materials, doing mechanical design calculations.

Other news?

Mike Thielvoldt working on suspension design for an interm upgrade.
Shyang has designed resonant gain filters for the BSC chamber HEPIs, to add gain in the geophone path around the suspension pos resonance and two stack modes. ITMX goes unstable with the resonant gains, and will require more modification. AS_I sees excess around 0.5 Hz when the resonant gains are enabled.

Suspension

From: Ken Mailand kmailand@ligo.caltech.edu

I have demonstrated a bearing setup for Calum, he asked me to follow up, and modify the suspension fixture rotating table, and after a meeting with Oddvar re. the design, to incorporate other modifications to the fixture.

Im working on a vertex BSC layout for Mike Smith that will show stay clear areas inside for the beam path.

From: Helena Armandula ahelena@ligo.caltech.edu

Core Optics

No report.

Pre-Stabilized Laser

From: Peter King pking@ligo.caltech.edu

Although the circumstances of the laser failure are not clear, at least not to me, it appears that something went wrong with the fibre optic setup that allows communications between the controlling computer and the temperature controllers in each diode box. The manufacturer of the system was contacted. The laser is back up and running although the output power is around 130-150 W.

Auxiliary Optics

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

I am in the process of reworking the development schedule and man power requirements for the SLC, PO MIRROR/TEL, INITIAL ALIGNMENT, OPTLEV, OMMT, AND VIEWPORTS subsystems of the AOS.

Other Laboratory R&D

From: Riccardo DeSalvo <desalvo@ligo.caltech.edu>

Juri

I wrote a document for LMA in which are analyzed various options for the design of the “spherical” Mexican Hat mirror for our cavity.

I wrote a Mathematica program for the calculation of optical cavities eigenmodes without assuming cylindrical symmetry. This could be another instrument beside FFT to study the effects of misalignment and real mirror maps on the modes shape and spectrum of optical cavities.

The program is working well but Mathematica is not optimized for matrix calculation and an accurate simulation requires too much memory. I’m translating the program in Matlab which seems much more efficient for this kind of calculations. First tests are very encouraging.

Chiara

We prepared the material (maragin steel plates for the blades) for the hardening process and we started the baking on Monday.

Since now I've back all the instruments I'm going through measurement of the transfer function of the system. I found the resonance of the bottom level so now I can control the amplitude of the signal from the actuator in different frequency ranges.

For additional information about this report, contact Stan Whitcomb or Phil Lindquist

Cavity (Location)	Material/Item	Start	End	Comments
Cavity #1 (OTF Lab, Bridge)	MMG nickel plated Nd-B-Fe magnets 40 pieces (Helena Armandula, SUS )	~6/8	TBD	Cavity re-alignment is in progress due to power drop and oscillation. Cavity is in Standby ~2 more weeks to completion??
Cavity #2 (OTF Lab, Lauritsen)	NA	NA	NA	No Change cavity is close to being ready for samples
Cavity #3 (OTF Lab, Lauritsen)	OSEM Flexi-circuit cable, qty ~ 45 (Helena Armandula, SUS) supplied by Univ. Birmingham (Stuart Aston)	~6/10	~9/10	No change: taking daily absorption & ring down measurements DuPont Flexible Circuits. The whole part to be constructed of 'flexi' i.e. no 'rigid' sections. (Stuart Aston,Univ. of Birmingham, SUS/UK subsystem) - Start Laminate: Kapton (LF8515) (document link: http://www.dupont.com/fcm/products/H-73244.pdf Coverlay (x2): Kapton (LF0110) (document link: http://www.dupont.com/fcm/products/H-73245.pdf DuPont Pyralux Series - Kapton / Acrylic Adhesive system. (document link: http://www.dupont.com/fcm/products/H-73246.pdf -------------------------------------------------------------- OSEM emitter & photodiode 40 of each, (Dennis Coyne, SUS ) Test has been completed. Results to be posted by Liyuan Zhang soon.
Queue Priority 1	2 Cleaned 50ppm transmission mirrors, 1 in dia., REO coated --	TBD	TBD	witness samples for the LHO vertex volume (added in 6/29/2005 vent)
Queue Priority 2	Stepper Motor (Riccardo DeSalvo, possible SUS or ISC use)	TBD	TBD	Stepper Motor sample had been placed into Cavity #1: Power dropped from 175 mW to ~25 mW after introducing the stepper motor sample, and continues to decrease. It is very hard to keep cavity locked. The stepper motor may have contaminated the mirrors. Will re-test when a cvity becomes available again. To be rebaked soon using the self-heating capability of the stepper motor (not just the oven heater controls)