Weekly Report for Week Ending April 07, 2005

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

The LIGO Executive Committee Agenda for Monday, April 11, 2005 will be:

(Meeting time: 10:30 am Pacific Time)

Announcements
Comments on Weekly Report
LSC Issues (Saulson)
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)

R&D and Advanced LIGO (Shoemaker)
CHANGE CONTROL BOARD/TECHNICAL REVIEW BOARD SESSION AS NEEDED

Special Items:

Special Announcements:

Weekly Report Highlights:

LSC Issues (Saulson)

No report

LIGO Laboratory Administration (Lindquist)

STATUS OF LSC MOUs (Petrac)

LSC MOUs and Research Plans and Progress Reports

No report.

Non-LSC MOUs

No report.

SITE TELECONFERENCE (Lindquist)

A site teleconference was held on Thursday, April 7, 2005. The following issues were among those discussed:

Budgetary Issues: we are preparing a change request to pull unspent budget for the second quarter of Operations salaries back into management reserve. This should be ready for submittal to the change board by the end
Tracking Report for Outreach: has been published and shows the budget for the first two years. Discussed methods for tracking all related costs including collaborations.

The list of assigned actions updated through March 10, 2005 will be found Here.

PROPERTY MANAGEMENT (Chargois)

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

Provided assistance to the Detector Group (P. King) with the packing and shipping of a Signal Analyzer (C21069) serial number 46506 for repair, to Stanford Research Systems attention David Ames. Account Number P204324.
Provided assistance to the Detector Group (L. Jones) by properly disposing of 2 gallons of Sylobead Molecular Sieves, 2 gallons of Silica Gel and 2 gallons of Alcoa Activated Alumina through Caltech's Hazardous Waste Coordinator.
Provided assistance to MIT (K. Mason) with the repackaging and shipping of four boxes of ASI Material/Hardware via ground transportation.
Provided assistance to Low Frequency Noise Suppression (R.DeSalvo) by running US Customs interference for a shipment of MH Mirrors from France.
Assisting Caltech’s Property Branch with Wall-to-Wall Inventory of the campus.

DOCUMENT CONTROL CENTER (Turner, Mak)

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

Met with Stu Meyer from DocuWare in preparation for his presentation to the DCC Steering Committee next week.
Met with representatives from DocStar in preparation for their presentation to the Steering Committee this past week. After further consideration among their software technicians, they opted to withdraw from further consideration as they felt their software would not be able to meet our requirements.
Researched review articles for those systems and companies we are pursuing.
Reviewed another document management software package from Synergy. Spoke with the sales representative and received links to video tours of their product as well as pricing. I watched the video and reviewed it against our requirements. They are comparable in features and price to OpenEDMS from Altimate Systems and seem capable of meeting our core requirements. Sent an email with pertinent links to all DCC Steering Committee members soliciting their review and comments.
Began compiling an updated publication list for 2004-2005.

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

Packages: in - 19, out - 6
Faxes: in - 18, out - 14
Began processing and filing of all 2004 Travel File folders.
Completed the process of verifying input of LIGO Science Seminars posted from 2004 to 2005 to the DCC database system.

COST SCHEDULE CONTROL SYSTEMS (Cunningham, Brambila, Kaufman, Salone)

>From: Esther Cunningham <esther@ligo.caltech.edu>

For ACCOUNTS PAYABLE HISTORY DATA Press Here.

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

Working on a maintenance purchase order for support from Zemax. Faxed the purchase order to Crystalaser for the repair of the laser for LHO.
Working on the Research Electro Optics change order for the fabrication of the substrates.
Completed the maintenance renewal for the computer equipment at the LLO site.
Called Primavera to obtain quotes for the renewal of the maintenance agreements which have recently expired.
Received the MIT change order #28 back from management review and federal expressed the mod to MIT. Notified MIT that the change order is on its way.
Returned an incorrect item received from Thor Labs on a credit card for the vendor to credit back to the account.

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

Nothing significant to report.

>From: Florence Kaufman <fkaufman>

Monthly reports as of the end of March 2005 have been completed and sent out for Operations, Outreach, Visitors, and DIA.
Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport. (For passwords contact Florence)

SUBCONTRACTS MANAGEMENT (Petrac, Jasnow)

>From: irena@ligo.caltech.edu (Irena Petrac)

No report.

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

The LLO SEC design has been changed to rotate the office block so that it receives natural light without the need for windows. This will accommodate the exterior exhibit space planned. A revised design is scheduled to be received next week.
The LSU/NSF lease has been received by the LSU attorney and will be executed by them shortly. The next step is for submittal of the final design for their approval.

SUPPORT (Baldon, Hiroto, Lloyd)

>Irene Baldon

No report.

>From: Julie Hiroto <jhiroto@ligo.caltech.edu>

· Nothing significant to report.

>Dorothy Lloyd

Processed the usual invoices for payment. Tracked and followed up on invoice problems. Reviewed and recorded payments processed by Esther the week of March 28.
Processed requisitions for standard purchases, payment requests and change orders. For more detail see Cost Schedule Control Systems report by Ruth Brambilla.
Jim continued with data entry in the LIGO database and helping out in the DCC.

PROPOSALS and REPORTS (Lindquist)

Draft materials have been distributed to LIGO personnel working with Visitors during 2004 and 2005. Comments are being incorporated. The publications list has not yet been updated.

DCC Steering Committee (Lindquist)

Linda Turner has scheduled several vendor presentations of applications that might be used to update the LIGO document control center:

Wednesday, April 6^th

· 8:00 - 9:30, Mercury Imaging (DocStar)

· 1:00 - 2:30, Altimate (OpenEDMS)

Wednesday, April 13^th

· 8:00 - 9:30 Stu Meyer (DocuWare)

· 1:00 - 2:30 Cheryl Young (CDG Now)

DocStar cancelled after reviewing our requirements with their technical people. We had a fairly successful presentation of the Altimate OpenEDMS System.

CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)

No open change requests. We are preparing a change request for second quarter budgets that were not used.

HUMAN RESOURCES (Akutagawa)

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

No special activities to report.

Quality/Safety (Tyler)

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

Nothing significant to report this week.

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

Summary of Commissioning Activities at LIGO Hanford Observatory (Landry)

Selected elogs from the past week are linked below:

ASPD2 demod angles were measured and adjusted
the resonance at 35.25Hz is mobile in amplitude
uncontrolled optics on the 4k spray light into the 2k, causing glitches
pitch and yaw control signals of the 4k test masses were calibrated in rad/count
Absorption in the core optics is determined by monitoring spot sizes. Using this technique, the beamsplitter was effectively eliminated as a culprit for excessive absorption in the 4k recycling cavity. Faraday lensing was assessed.
Next, ITMY absorption was determined, and the measurement (18.5mW per W incident on the MC) agreed with a previous, independent one.
similar measurements were prepared on the 2k
framebuilder fb0 filled its disk, so that no minute trends were available
here's what postdocs do at 11:55pm: Google maps
the 4k ETM does not have any significant blemishes

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

L1 Interferometer (Frolov)

There were two interferometer upgrades last week. The coil driver electronics was modified to improve the noise performance. The new transfer functions of the modified controllers were measured and digitally compensated. The full interferometer was re-locked in the low noise state but with lower power - 1 W instead of nominal 2 W. The reason for not being able to make the power up step is under investigation.

The main laser was replaced in preparation for the interferometer power increase. The power out of the new laser is 10 W up from 6 W from the old one. The beams on the PSL table were realigned and the pre-mode cleaner, reference cavity and the mode cleaner were re-locked after the swap. Before the installation the technical noise on the laser light around the main modulation frequency was measured and found to be acceptable at the present photocurrent levels.

Education and Outreach (MZ for Thacker)

John is attending the NSF Research Center Educators Network (NRCEN) this week in Pasadena (of all places).

We held an update telecon Wednesday with EDR to discuss a rearrangement of the SEC floorplan. The proposed change will enable better engagement of visitors with the kinetic facade exhibit being designed for the South wall.

LLO General Computing and LIGO Computing Security (Roddy)

Set up all of the CDS workstations/servers to log to the GC syslog server via River as a gateway.
Reading up on Solaris RBAC and BSM to determine if it will solve a few issues for both CDS and GC.
Set up a rack in the computer lab.
Preparing more documentation for Solaris security configurations – going through the old notes and adding more up to date information.
Working on a Nessus installation to update my existing install.
Working on a Solaris 10/Apache2 issue for the replacement web server.
Getting the most recent versions of some of the site licensed software from Caltech. Working with the software group to try and find an easier method for getting software since the default method often breaks due to proprietary downloaders and VPN issues.
Set up some backup software and a drive for John Thacker.
Reviewing a couple of security docs that are put out by other organizations and looking for useful information from them.

HPLF, Optics Modeling, Data Analysis and L1 Commissioning (Franzen)

IPG Photonics placed the repaired 100 W laser on a seven day burn-in test. However, the system failed during the burn-in due to a faulty power supply and damaged some components. This seems to have been a fluke occurrence and it was decided to go for another try. Presently IPG is reassembling the new fiber block assemblies, and hope to have the system back together in a few days and restart the test. Meanwhile, components for a 1070 nm setup is being prepared, just in case more problems occurs during the test of the 1064 nm system.

Have assisted Peter King and Valera Frolov in the PSL with the ongoing work to install the refurbished 10 W laser.
I was trying to run burstMon on the CIT cluster for S4 off-line analysis but discovered a problem with the code. Sergey Klimenko has been notified and is trying to fix it.

CDS software (Khan)

Prepared the software for the fake chiller to be used in testing the new laser. The laser power supply 126mopa requires a chiller to be present before the power to the laser can be applied. Since the big chiller and the 126mopa are not compatible, a software has been designed that mimics the presence of a chiller, this lets the power supply going with any kind of chiller.
Updated the STAT database for the l1iocstat controller. During the S4 run a separate controller was started with IFO_STAT database, as there was no time to upgrade the original controller. Now, the two databases are combined and running on single l1iocstat controller.
Fixed a bug in the TCS medm screen that allows alarm to be displayed when the communication between the mv162 processor and the TCS controller is broken.

LDAS/Condor Sysadmin and Burst Analysis (Yakushin)

Data archiving/Condor/LDAS admin:

Sent 5 bad Maxtor disks that are still under warranty to be exchanged.
LHO L3 S4 data is 70% copied to LLO from CIT using LDR. Next in line: GEO S4 L3 frames and LHO A4 L3 frames.
AstroWatch data is being archived, L1 and L3 RDS created.
Prepared a spreadsheet with current, near future and maximum estimated power consumption by LDAS equipment. Submitted the spreadsheet to Rusyl and Allen.
AC maintenance work in the LDAS room is scheduled for next Tuesday.

Data analysis:

Reviewed various LSC codes for beam pattern computations and calibration to use for the new MDC production infrastructure. The conclusion is that GravEn (by Amber Stuver from PSU) has almost all the necessary infrastructure and whatever is missing would be quite easy to add.

Initial LIGO Detector Science & Engineering (Coyne)

CDS

No report.

40 Meter Interferometer (Weinstein)

IFO commissioning:

Our STACIS active pre-isolator system was re-commissioned by Virginio over the last couple of months, and he and Steve have established that it effectively reduces position noise at the suspensions from 1-20 Hz, as measured by the OSEM sensors and oplevs. However: Osamu, Rana and Rob have measured the velocity noise of the mirrors using the in-lock arm feedback signal (sensitive to differential motion between ITM and ETM) and finds increased noise from 0.1 - 1 Hz and rms velocity. This is not inconsistent: the differential motion (DM) is much smaller than CM, and the suspensions see CM+DM they don't see the small increase in DM with STACIS on. However, this decrease definitely makes it harder to lock and less robust in-lock. So, for now, we will turn STACIS off. We will explore re-instrumenting STACIS as an actuator for suppressiong arm DM.
Osamu reports that with STACIS turned off, the dual-recycled Michelson (DRMI) acquires lock quickly and easily, and holds lock robustly.
Osamu continues to improve the DRMI sensing signals. He replaced the RF power splitters with more isolating ones. He Placed the RF amp for PO DDM back in service, and Ben wired it up so that there was a 1M Ohm resistor from the power supply GND output to the supply's earth. This should stop the amp from floating up.
Osamu noted that the signal from the PO 133 MHz is still noisier than the 199 MHz one, perhaps due to RF saturation; to be checked.
Rana, Dan and Rob have completely rebuilt the AP beamline on the ISC table. The overall optical path to the LSC PDs is greatly reduced and the number of optics minimized. Space is made for a 3rd RF PD on the table. The noisy mechanical shutter and OSA controller boxes were removed from the table.
They succeeded in eliminating some clipping of the AP beam (on an SP beamline mirror); replaced some upstream optics from 1" dia. to 2", followed by a beam-reducing lens. Dan calculated the beam size everywhere on the AP table, then measured it with the beam scan, then fit the data and chose lens focal length and location, and iterated.
Other changes to the AP beamline: eliminated the electro-optic shutter and put a beam attentuator (HWP and polarizing beamsplitter) and mechanical shutter on the LSC path; put beam dumps in all the appropriate places; realigned the beam into the OSA; etc. They took pictures (posted in the elog), labeled optics and cables, and are now drawing up the as-built layout for Mike Smith to incorporate into his ACad drawings.
The beam spot at the AP beamline is observed to move around on the camera with a ~1 sec period. Osamu and Steve are correlating the QPD at the AP with the various suspension P&Y readbacks, to see if there is one culprit. The ITMX suspit seems to have strongest correlation with AP. Also, the oplev servos on ITMX seem to be ineffectual at damping P/Y pendulum motion. We have long suspected that this is due to poor SIDE damping. Under investigation.

IFO modeling and DC detection development:

Monica continues to develop her Finesse 40m model, with advice from Rob and Osamu. She can now compare TFs between e2e, finesse, twiddle; the comparisons are starting. Hiro promises a DRMI summation cavity in 2 weeks, and Monica will incorporate it into her e2e model.
Rob continues to work on the design of the output mode cleaner for our homodyne detection experiment, and is studying Keita's strawman design.

PSL:

Jay and Ben adjusted the offsets on the ISS to bring the mean value back down into range, thereby reducing the occurance of saturation.

Electronics, controls:

Ben is working on the frequency multiplier circuit to generate 133, 166, and 199 MHz from 33 MHz. It has been assembled, and it works, but it generates lots of undesired sidebands. We have no clear spec on how small these should be, but he's working on reducing them. He will install bandpass filters in the circuit where they are needed. He put a generic filter PCB file into PCB Express, and it should be back sometime this week. Once it comes in, he will stuff and install them to see how it helps.
Jay and Ben are continuing to test the new ASC system. They found and replaced a bad Pentek and Bob fixed a bad cable. We now have 3 WFS operational from the whitening inputs through the software.
Jay will put in new hardware to read out the IPANG QPD (at the x end) into the front end, and Rolf will supply the front end code to get it into the ASC system.
Sander and Ben plan to reinstall the fiber timing links, replace long copper cables. There are ~9 crates requiring fast timing signals, including the ones at each end. They'll install the end ones and one in the vertex area, for starters.
Jay and Ben are wiring in an EPICS ADC channel that will monitor the frequency error signal in the Mode Cleaner RF signal. Along with the wiring, the database will be changed, and the signal will show up on a screen.
The QPDs at TRX and TRY still have noise above 1KHz. Ben grounded the jumper of the output AD 620, which changed the frequency of some of the noise peaks, but didn't attenuate them. More investigation will be done this week.
Most of the problems associated with the linux operator consoles have been resolved. Osamu reports that Foton doesn't work well on linux. The MEDM fonts are sometimes clipped; Rolf and Alex are looking for better scalable fonts.

Lab Infrastructure:

Bob finished clean and bake of roughing pump vacuum manifold, and Steve and Bob reinstalled it. A vent valve #2 in the roughing pump line might have a small leak; working on it.

Bake oven Lab:

Bob has completed two bake jobs in his lab since the rewiring.
Bob met with SUS folks on the setup of the new quad suspension lab in the synchrotron building. He is planning on building a new very large (6'x6'x7') air bake oven for the quad suspensions, and plans on lowering the optical table in the south annex clean room to accomadate the quads.

Thermal Noise Interferometer (Black)

Akira is making good progress on the bond noise experiment. Most of the necessary electronics have now been brought in. A rack was put in to hold some of the electronics. The vacuum chamber was modified to work better with the experiment. Each of the custom electronics boxes was tested and modified as needed. A spare high-voltage pzt driver was borrowed from the TNI.

LASTI (Ottaway)

Ken Mason reports:

Continued detaing fabrication drawings for the BSC solid stack. We changed the table hole pattern from 1/4-20 holes on a 2" spacing to 3/8-24 holes on a 1" spacing. In order to keep costs in line we are putting tapped holes in selected locations instead of across the optic table.

Rich Mittleman reports:

With the BSC in a "psuedo-advanced ligo configuration" (no stack and a load which approximates the high freqeuncy effective mass) we have started system id for control and noise amplication studies (see Lasti ilog 4/7/05)

Data Analysis and Computing (Lazzarini)

Simulation and Modeling (Bhawal)

Weekly e2e Physics meeting

Mark Barton presented his e2e model for Quad pendulum (details below). We also discussed the 'bundle' feature in Alfi, which is currently being improved by Bruce and which will allow making models such as the quad pendulum easier to build and will also improve the appearance of Box files.

Mechanical simulation

(Mark Barton) This week I repackaged the E2E blocks that I created to represent the ASUS triple and quad suspensions in a more convenient form. They now have individual inputs for each support structure displacement coordinate (x/y/z/yaw/pitch/roll) and each force/torque, as well as individual outputs for each coordinate. I then added local control to the quad block and checked that it gave the same results as the Simulink model used to design it.

H1 thermal study

(Hiro) On request from Peter Fritschel, the difference of the TCS conditions needed to regulate H1 using the current ITMx mirror and that using the replacement ITMx mirror is being studied.

FFT study for understanding Recycling Gain

(Biplab) Studied possible reasons for high recycling gain in H2 even though FFT study with measured HR loss values gives a number similar to that of H1: about 45 (this is also the observed value of H1 at site)

(i) Checked if aliasing is in any way affecting the FFT run for H2. That is not the case.

(ii) Checked if some of the assumptions about losses and reflectivities that we make in FFT or E2E runs can affect the results,e.g if high values of AR side losses affect anything. However, keeping in mind that the measured value of H2's common mode rejection ratio is very good, it seems that, unless the HR surface losses are lower than the measured/estimated values of around 70-100 ppm, perhaps nothing obvious can explain the better recycling gain in H2. [To provide some numbers: A loss of about 15 ppm in all optics can produce a recycling gain about 100. No losses can make the value 135]

Mode matching of input beam to COC

(Hiro) Analytic calculations and FFT simulations are used to study effects of mode matching of the input beam to Core Optics. Observations were provided to Rana. Independent analysis was going on at LHO by Keita, and we are going to combine our efforts.

Simulation of 40m interferometer

(Monica) I validate the 40m Finesse model I implemented last weeks reproducing the L- transfer function at dark port (AP) demodulated at 166MHz. Now I can compare transfer functions of minor signals that don't match between e2e and Twiddle. In the meanwhile, I'm simulating the 40m IFO without arms to check the same minor signals. I'm also evaluating the same results with Twiddle to make comparisons.

Outreach

(Biplab) Interacted with Sany Yoshida and his students at Southern Louisianna University to help them in their simulation of the Input Optics system.

Modeler code

(Hiro) The matrix, statespace and RungeKutta classes have been updated to use codes based on expression template and template meta programming. This transition was done to make codes cleaner and faster. This will be an important investment to write the dual recycling module with modes. In addition to fixing a few bugs, code was modified so that Mark Barton's quad pendulum model can be more easily implemented. [ the code - or formula - to calculate the coupling of two difference mode bases seems to have some bugs. This is used, for now, only in baseChager primitive, and the fixing is deferred until needed.]

ALFI

(Bruce)

Finished initial work work on recursive bundle content tracing.
Implementing node validation for the checking for and simple navigation to unresolved connections.

(Melody)

Continuing on fixing existing Problem Reports (PR).
Finished fixing PR 481 (renaming ports should trigger the need for saving).
Currently working on the user interface for allowing the user to choose the display for primitive nodes: graphic or text.

Data Analysis Activities (Lazzarini)

Charlton:

This week I have been working on modifying the stochastic pipeline analysis so that it can use an LSC datafind server instead of hand-generated cache files.

Mandic:

I performed the S3 H1L1 stochastic analysis using the calibrated strain data, and I compared it to the previous analysis (performed on the non-calibrated data). Due to various problems with data access, only about 1/3 of the S3 data was used. The agreement in the error bar was fairly good (<1%), while the point estimates differed by ~18%. I also found a couple of glitches in the strain data.

I looked at the H1 ASQ PSD with and without stochastic hardware injections and found no significant difference.

I started working on the code to calculate long-term coherence between different channels. The code is meant to be run on the cluster, and the hope is to provide useful feedback for commissioning. It should also be possible to use it to study the H1-H2 coherence.

I continued working on the time-shifts for the stochastic analysis. I ran the code the first time - the results look interesting, but should be studied in more detail.

Mendell:

Joe Betzwieser has started working with the PULG on proposed searches involving multiple spindown parameters using the StackSlide code.

Yakushin:

Reviewed various LSC codes for beam pattern computations and calibration to use for the new MDC production infrastructure. The conclusion is that GravEn (by Amber Stuver from PSU) has almost all the necessary infrastucture and whatever is missing would be quite easy to add.

LIGO Data Analysis System

Software Systems (Blackburn)

LDAS:

Hosted a three-day working group meeting of the DASWG (Friday, Saturday and Sunday) to develop a plan for all software to be used in the S5 Science Run. Requirements were placed on LDAS, TclGlobus, DMT, LDR, Onasys, SegFind and LDG during the three-day marathon. Still to be determined are the requirements on LAL, LALApps,

DMT Monitors:

LIGOTools and other user level and science level software. A document summary will be posted on the DASWG website once all contributions are available from the impacted software projects.

For LDAS, the emphasis is on generation of RDS frames. No real surprises to the LDAS development other than a set of release dates coupled to a July 15th ready date for all software in what is being called the "Astrowatch End-to-End" test. There was much interest in using TclGlobus with other LSC software projects, which has now pushed up plans to release TclGlobus to support this "Astrowatch" test. These releases of TclGlobus will be alpha releases in the form of source code tarballs.

Modified the runLDAS script to detect if it is running on the correct host (PR#2744)

Modified FrVerify to validate the frame filename's meta data and leap seconds (PR#2729)

Worked on improving the error message for ilwd arrays that have fewer elements than what is reported by the dim argument (PR#1976). The code has been tested both on a tandem system and ldas-dev. It just needs to be validated with a nightly build.

Worked on displaying of the checksum value when FrVerify detects an error in the checksum validation. The value being calculated differs from both command line utility cksum and from FrameL's FrCheck program. This problem requires more investigation.

Did rework of the configure.in files to upgrade macros being used to the 2.59 spec of autoconf. This is currently being tested.

Updated several packages in /ldcg

rsync was upgraded to 2.6.4 (PR#2806)
lftp was upgraded to version 3.1.1 (PR#2802)
the C Frame Library (FrameL) was upgraded to version 6.18 PR#2789)

Updated cmonClient to fix a typo resulting in error if a user did not select all job types: passed, failed, rejected. Working on having a button in cmonClient to run all user commands test.

System and Integration Testing: Ran system test on ldas 1.5.29. Fixed stackslide putStandAlone cmd to really run putStandAlone instead of dataStandAlone. Working on script to encompass all user commands. Closed PR 2803 - a script to exercise all user commands in ldas. Updated regression test scripts to use ldas ldasJob package instead of ligotools for consistency. Updated some work arounds in ldasJob 2.5 which defaults to persistent sockets. Wrote 2 PRs against ligotools about problems with ldasJob 2.5.

Removed large amounts of job output from cit after checking with users. Responded to users that request a list of their job numbers. Wrote a script that checks disk space, locate the users with the largest size job output and either delete jobs over 2 days old if user has authorized to do so or notify user about these jobs.

TCLGLOBUS:

Added several more test cases to exercise Globus I/O TCP and security functionalities. (see http://tclglobus.ligo.caltech.edu/status.html for latest status)

Worked on Globus FTP Client & Control package to prepare for the first Alpha release.

TclGlobus is being targeted for a May 1 and July 1 set of alpha releases in the form of source code tarballs to support the integration of Globus authentication and data movement into several of the LSC Tcl Software packages.

OSG/GRID:

Made some progress on getting condor jobs to run on our OSG Integration Test Bed (ITB) cluster. We just found out that Condor jobs only run on head node. We suspect that UID_DOMAINS and FILESYSTEM_DOMAINS are improperly configured and will be looking into this in the next week.

The GriPhyN/iVDGL "All Hands" meeting has been scheduled for the end of the month at ANL. LIGO has been asked to provide three talks covering experiences, plans and summary for using the software from these projects.

Hardware Systems (Anderson)

Caltech

(Dan Kozak)

Finished verifying all S4 L0 frame files at CIT against md5sums calculated at the time of their copy from /frames to /archive at the observatories.
Continued testing SAM-QFS 4.3.
At LHO, ejected tapes from L700 and imported/labeled new tapes.
Discovered oddity in postS3 data shipped to CIT on tape--a bunch of files had both their first and second copy on the same tape (and so the second copy hadn't been shipped to CIT). This data was copied across the network.
Repacked/relabeled LLO L0 tapes that had had data sprayed across lots of tapes (i.e. tape importing/labeling was done without stopping the archiver). 6 tapes worth of data was sprayed across 210 tapes.
Got A4 data archiving at the observatories.
Attended DASWG face to face meeting on Friday.
Trying to figure out the discrepancies between the data holdings of the
CIT nodes vs. ldas-gridmon's LDR and RLS think. Ongoing.
QFS upgrade to 4.3.3 on dataserver-dev, dataserver-test & ldas-suntest5.

(Phil Ehrens)

Built and installed Subversion version control software with full Apache and OpenSSL integration to support client certificate challenge authentication.
Documented client configuration requirements for user interaction with Subversion installation.
Investigated integration of Subversion client certificate authentication with grid-proxy-init based proxy certificate authentication model. There is still more work to be done to define certificate authority hierarchy using the Apache ssl configuration options, which are obscure.
Supported users of new Subversion installation.
Replaced intermittently failing hard drive in datacache6 0:0 slot.
Discussed requirements of createRDS -framequery option support with Ed Maros, Stuart Anderson, and Kent Blackburn.
Wrote fix for PR# 2805, still to be system tested.
Discussed organizational refinements and modifications to the Subversion repository with Albert Lazzarini. The repository needs to support an authorized user matrix capable of restricting access on a per-project basis, with a single point update method.

(Stuart Anderson)

Participated in 3-day DASWG meeting on software infrastructure for S5.
Opened 3 new cases with SUN based on SAM-QFS 4.3 testing:

o Migrating from single- to dual- allocation turned into an RFE.

o samexplorer fails on end-of-line comments turned into a Change Request.

o sam-arfind stuck in a spin-loop on 4.3.3 test system--turned into a bug.

Setup LDR at the Observatories to get each others and GEO S4 L3 RDS frames.
Helped start Astrowatch to copy and archive data from both Observatories at Caltech.

MIT

(Keith Bayer)

Looking into more NFS Stale file handle errors w/ FC3.
Caught up backlog adding users to cluster.

Livingston

(Igor Yakushin)

Sent 5 bad Maxtor disks that are still under warranty to be exchanged.
LHO L3 S4 data is 70% copied to LLO from CIT using LDR. Next in line: GEO S4 L3 frames and LHO A4 L3 frames.
AstroWatch data is being archived, L1 and L3 RDS created.
Prepared a spreadsheet with current, near future and maximum estimated power consumption by LDAS equipment. Submitted the spreadsheet to Rusyl and Allen.
AC maintenance work in the LDAS room is scheduled for next Tuesday.

Hanford

(Greg Mendell)

All S4 raw, Level 1 RDS and Level 3 RDS has been transferred from the sites to CIT. Below are reports on gaps in the S4 data. Note that the gaps shown are for all times archived under /archive/frames/S4, including out-of-run times.

Reports on gaps in LHO S4 data are here:

http://www.ldas.ligo-wa.caltech.edu/ldas_outgoing/GapChecker/ gapReportLHOS4_040705.txt

http://www.ldas-cit.ligo.caltech.edu/ldas_outgoing/GapChecker/ gapReportLHOS4_040705.txt

These show the same data is at CIT as at LHO. There are NO gaps in the LHO data during the run. The gaps shown are times when we did not archive out-of-run data (i.e., when there were no injections or calibration data to archive).

Reports on gaps in LLO S4 data are here:

http://www.ldas.ligo-la.caltech.edu/ldas_outgoing/GapChecker/ gapReportLLOS4_040705.txt

http://www.ldas-cit.ligo.caltech.edu/ldas_outgoing/GapChecker/ gapReportLLOS4_040705.txt

These show the same data is at CIT as at LLO. The gaps shown are due to the power failure, framebuilder reboots, or times when we did not archive out-of-run data (i.e., when there were no injections or calibration data to archive).

(Ben Johnson)

Attended DASWG F2F infrastructure meeting at Caltech, Thursday-Monday.
Finished publishing last of "S4" data. All S4 data has been transferred to CIT.
Assisted Igor with setup of AstroWatch utlities at LLO. A4 segment submission, archiving, and publishing is going on regularly at both observatories.
Assisting a local user run DMT monitor code on the cluster here.
I have been contacted by Ray Gedert of Dynasys about a Sun Support quote. I'm comparing what he listed with what we have.

General Computing (Wallace)

MIT:

(Keith)

Helped with matlab troubles on desktop
Installed backup harddrive into desktop
Investigating Eudora outgoing mail issues
Worked on wireless issues related to the new setup
Received an old mac laptop for looking into Mac issues
Continuing to investigate LDAP as time permits

Livingston:

(Shannon)

Set up all of the CDS workstations/servers to log to the GC syslog server via River as a gateway.
Reading up on Solaris RBAC and BSM to determine if it will solve a few issues for both CDS and GC.
Set up a rack in the computer lab.
Preparing more documentation for Solaris security configurations - going through the old notes and adding more up to date information.
Working on a Nessus installation to update my existing install.
Working on a Solaris 10/Apache2 issue for the replacement web server.
Getting the most recent versions of some of the site licensed software from Caltech. Working with the software group to try and find an easier method for getting software since the default method often breaks due to proprietary downloaders and VPN issues.
Set up some backup software and a drive for John Thacker.
Reviewing a couple of security docs that are put out by other organizations and looking for useful information from them.

Hanford:

(Christine)

Network usage can be seen at http://www.ligo-wa.caltech.edu/~christin/mrtg/ 198.129.208.1_198.129.78.122.html
Working on a user's laptop that would not operate on battery power because of an un-docking issue when it was removed from the port replicator. Also discovered that the Ethernet NIC isn't being recognized, no link light. Dell technical support is coming out to replace the motherboard. Also while I have it, I'm upgrading the software. A Norton scan of the computer discovered 80 e-mail viruses in the user's inbox. These all have to be cleaned out of the inbox and cleaned out of the user's file on the mail server.
Other misc. user support.

CIT:

(Mike)

Worked a number of Prism issues and still debugging the server supporting the Prism s/w package.
Checked mail filters for false positives.
Worked on a couple of computer systems to be released to Caltech.
Regular user support.

(Veronica)

LSC: Posted updates to the 'papers under review' and 'reviewed documents' pages.
LIGO: Updates to the PAC18 meeting website. Updates /troubleshooting of the roster database. Security audits of Win servers. Moved a websiteof Amaldi5 online proceedings to ligo.org. Working on migrating the Elba and Amaldi'99 websites from a Windows server to ligo.org, rewriting the asp in which they were originally written. Working on other website updates. Videotaped the first of the three software demos for the DCC, compressing it for a DVD to be used as a reference.

(Larry)

Finished off a couple of maintenance contracts. The Foundry contracts have come through. Still working on a SUN contract. Made some minor purchases of support equipment items.
Spent a little time checking out the different web cams. The Toshiba webcam does have better resolution, however when being used on a projection screen it gets washed out by the light. It does work well when using it to project a whiteboard or similar presentations. It is now setup with a tripod to facilitate its use. The Axis webcam works well for general use but lacks some of the resolution needed for use with the smaller projection screens. Both can be checked out if needed.
Assisted a number of users with different items. Mostly, configurations and application support.
The IDEAS s/w for the Windows box has arrived. Dennis Coyne has the package and will be checking it out. There are still some issues in getting the licensing worked out but we are getting there. Received the Matlab SP2 pkg. and hope to have it installed on the server in the next day or so.
Assisted the office group with a number of transition items.
Handled a couple of logistical issues in connection with the construction going on in the building.
Setup a couple of new user accounts. Cleaned out a couple of old accounts with about 12 more to go.
The normal assistance to various users with file restoration.
Performed a full backup on the user files. Still need to backup the servers.
The amount of time going through logs and e-mail filters increased this week. Just more activity going on. E-mail Statistics March 31-April6, 05

Accepted Messages 19,482

False Positives 136

Virus Messages 8,585

Rejected Messages 19,052

Total Messages 38,534

Advanced LIGO and Supporting R&D (Shoemaker)

Systems and Management

No report.

Seismic Isolation

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

Advanced LIGO Seismic Structure

SEI Structure:

Representatives from Norcal were in to validate the quote for pod chambers and baseplates they had given to ASI. After reviewing the drawings, they offered to have their engineers offer suggestions to reduce the cost to make these custom parts.

Ed Chargois shipped the miscellaneous boxes of hardware purchased by ASI to MIT.

Actuators:

We have received all the large and small actuators from PSI. One large and one small were sent to Jay Heefner and the remaining sent to MIT. Myron has cleared.

Suspension

From: Janeen Romie <romie_j@ligo.caltech.edu>

Working on the detail drawings for the tablecloth assembly.
Met with Valery Mitrofanov and Vladimir Braginsky last week about the quad design and the work Valery is doing on charging and Q measurements. I've forwarded my comments and some technical notes from Valery and Vladimir to Gregg Harry who is in charge of the electrostatic charging research plan.
Met with Calum, Helena, Ken Mailand and Dennis about the procurement of a clean room for the Synchrotron and a large air bake oven for the So. Annex.
Trying to set up a meeting with our magnet vendor to understand why Gin Gin is seeing peeling of the nickel coating. Helena has some ideas but wants to pass them by their technical folks.
Riccardo reported that the wire stressing machine has arrived in the Synchrotron from Italy. It will require some refurbishment (change the power plug, add hydraulic oil, etc.), so we'll meet with him soon to coordinate this work.
We had a meeting on Monday morning to discuss the layout of the lab in the Synchrotron and possible use of the South Annex of the 40m lab. It was very fruitful. Jay and Mohana are working on the electronics rack and are starting to move around tables and furniture to get the rack in the proper location.
At Monday's meeting, I got a piece of wood lodged in my eyelid and the doctor at Occupation Health wants the lab floor to be vacuumed and cleaned better. Calum, Helena and I will coordinate with maintenance to make sure this happens.
Supported Gina in purchasing on a coatings PO of Helena, as Helena was out of the office.
Had a meeting with Russell on the dimensioning and tolerancing of the inner and outer plates of the lower structure.
Worked out that we have enough maraging steel for RAL to make noise prototype blades for quads.
From: Ken mailand kmailand@ligo.caltech.edu
I have worked with Helena to produce an air bake oven specification for the LASTI parts. The Grieve Co. quote is ~$12,500. for 48”x48”x72” size, ~two other quotes pending.
I’m working on a lower suspension installation fixture arm, attaching to the flange of the BSC chamber. I have started the detailing of the component parts and making a list of the purchased parts, bearings etc.
One of the module shelf brackets for the BSC chamber has been completed. Further work on the attachment of the chassis box will be done when the chassis box component part has been selected by Todd.

From: ctorrie <ctorrie@ligo.caltech.edu>

ADVANCED LIGO SUSPENSIONS

LIGO Movie

Oddvar, Ken and I met to discuss making simplified models of the seismic system so we can create movie files. Suspension files for the MC, Quad ETM and LIGO ETM have been created.

Quad Tooling and Lab

The quad build was delayed this week as we have been working with RAL on modifications to the tooling. Ian Wilmut is out next week for 2 weeks.

The Synchrotron area has been prepared for the quad. Several items have been removed, the electronics re-arranged and the lab has been cleared for the arrival of the portable clean room.

Drum Ended Wires

We have asked Mr. Galli to create 1 drum-ended wire for the top stage of the ETM without the features created by the machining.

Overall Assembly

The overall assembly in SolidWorks for the ETM is progressing well. Several interface issues have been realised from gathering together of the various sub sections, however all are minor.

DCC

We have been looking at several companies to replace the software used to power the LIGO DCC.

Design Meeting

http://www.ligo.caltech.edu/~ctorrie/QUAD_ETM/quad_etm_setup_page2.html

Core Optics

From: Helena Armandula <ahelena@ligo.caltech.edu>

Suspensions

Adv. LIGO SUS

Finished the specifications (with Ken Mailand) to go for quotes on an oven to bake parts for the LASTI Quad.

Finished specifications and sent RFQ's on a modular clean room to use in the synchotron during the assembly of LASTI suspensions.

Pre-Stabilized Laser

From: Peter King pking@ligo.caltech.edu

A new set of boards for the high power photodetector arrived from PCBExpress. Unfortunately the board size was incorrect as, in one case, they cut the boards 0.150" too short. A check of the PCB files and Gerber files was made and they check out okay, so that the error was done by PCBExpress. However the boards are still usable, it's just that there isn't quite as much room inside the housing as there should be for the voltage regulators.

Auxiliary Optics

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

STRAY LIGHT CONTROL

I am in the process of updating the ZEMAX non-sequential model of the ADV LIGO vertex with the parameters for the fused silica optics. Previously, the model was based on sapphire optics.

BS DIFFRACTION LOSS

I have modeled the BS in ZEMAX and am studying the diffraction losses around the edges of the BS and the elliptical baffle in front of the ITM using physical optics propagation.

Other Laboratory R&D

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

Alban Remillieux LMA Lyon

We just finished our mexican hat mirror production campaign. Tomorrow I will send you 3 mirrors:

First one, 30 mm thick. It received 3 preforme deposition runs, 2 corrective coatings, and an high reflectivity coating (HB)11HBB. Its absorption is excellent (0.4 ppm on 26 mm diameter) and its scattering is 18 ppm on 20 mm diameter. Transmissi0n is 1019 ± 8 ppm (required 1000).

Second one, 30 mm thick. It received 2 preforme deposition runs, 3 corrective coatings (corresponding to the maps that I sent to you) and an HR coating (HB)11HBB. Its absorption is 0.45 ppm over 26 mm diameter and its scattering of 10 ppm over 20 mm diameter, despite a polishing defect at the center that we discussed earlier (rugosity 2 nm RMS) which covers only a small region. The transmission is 931 ± 9 ppm (1000 required).

We had an accident with this mirror: for larger mirrors, we normally use special mountings with Teflon supports that avoid the thermal expansion problems during deposition. For the MH substrate we did not build the special supports (they are very expensive) because so far we never had thermal expansion problems with mirrors as small as 50 mm. With this mirror, while the holder shrunk in cooling, the backside edges broke off. Happily the useful surface was not touched and I think that you can use this mirror, even if it is not presentable!

Third one, 20 mm thick. It is the last test run unit. It got 2 runs of préforme coating, 1 corrective coating and an HR coating (HB)11HBB. You already know this mirror; it is the one that we discussed on the phone, which has a de-centered corrective coating

I will send to you as soon as possible a report and all the data maps.

Innocenzo Pinto & C Salerno Benevento

Summary of what we discussed/analysed during the last few days comparing periodic and non periodic mirror coatings:

a) Characterization of periodic (CSIRO recipe) multilayers.

Assumtions:

stack of l/2 optically thick doublet;

optical length of Ta2O5 is al/ 2,

optical thickness of SiO2 is (1-a)l/2.

Thermal noise from SiO2 is 10 times smaller than from Ta2O5.

Thermal noise is thus: noise = K N (a/nT + (1-a)/nS) l/2 [1]

where K is an (by now irrelevant) constant,

N is the number of doublets in the multilayer, and

nS, nT are the refraction index of SiO2, Ta2O5, respectively.

Using straightforward cascaded-transmission-matrix computations, for any a and any (maximum) transmissivity, one can compute the number of layers needed, and from equation [1] above the noise (in units of K).

Thus you can draw two SURFACES: z=N(a,Tmax) and z1=(noise/K)=scaled noise (a,N[Tmax])).

b) characterization of genetically engineered multilayer. Fix a, such that the ratio between the TOTAL optical lengths of tantalum and silica is a /(1- a). The ratio between the physical lengths will obviously be (nS/nT) times that.

Now fix also Tmax, and find by trial the smallest N (even) such that the genetically engineered N-layer subject to the above length ratio constraint stays below Tmax, and the assoociated families of SiO and Ta2O5 layer physical thicknesses, call them xS(1,2,...,N/2) and xT(1,2,N/2).

From these, compute the noise as

k (sumk xT(k) + (1/10)\sumk xS(k)).

Again you get two surfaces. I guess these two are all we need to draw a conclusive comparison. As far as I know, a) has been completed. As you understand, b) requires some time (brute force optimizations!). I'm confident we could end up with something in a week or so.

Juri

I continued working on my simulation program: implemented tilt option for “pitch” and “yaw” and preliminary test on the nearly-concentric Mexican Hat configuration. I spent some time working with Marco on several Mathematica programs used to understand the Mesa beam design and data analysis for our Mexican Hat cavity.

Marco (05 Apr)

OTF lab: I’m continuing works to rehabilitate the lab.

I studied some strategies to model non-Gaussian profiles for our actual cavity data, in particular finding fit parameters for a two dimensional profile, confidence limits and correlation for my nonlinear regress.

Creep Experiment: Observed a linear decreasing trend at about 200oC. After following the creep for 1.5 mm over ~a week we returned to 40oCNow the blades temperature is back to 40oC.

Riccardo

Studying costs (with Helena) of producing non-periodic coating mirrors for TNI.

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