Weekly Report for Week Ending June 17, 2004

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

The LIGO Executive Committee Agenda for Monday June 21, 2004 will be:

(Meeting time: 10:30 am Pacific Time)

Announcements
LSC Issues (Saulson)
Comments on Weekly Report
Field Change Orders/Contingency Liens/Change Requests
LIGO Lab Operations

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

Weinstein (40 Meter)
Libbrecht (TNI,
Zucker(LASTI))

Data Analysis and Computing (Lazzarini)

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

Special Items: Change request submitted by John Worden: http://www.ligo.caltech.edu/~phil/ChangeBoard/CR040012.pdf

Special Announcements:

Weekly Report Highlights

LSC Issues (Saulson)

no report

LIGO Laboratory Administration (Lindquist)

Status of LSC/MOU Research Updates and Program Reports (Petrac)

(LSC Research Updates through August 2004, and Progress Reports through February 2004)

Balearic:

Attach. A / in LIGO review / Lazzarini

GEO 600:

Attach. B / in LIGO review / Barish
Attach. Z / to GEO for sign-off

Hobart&William Smith:

Attach. A / in LIGO review / Lazzarini
Attach. B / in LIGO review / Barish
Attach. Z / to PI for sign-off

National Astronomical Observatory-China (NAO-C):

Attach. No. 1 / first draft / in NAO-C review

Stanford:

Draft-Attach. A / in LIGO review / Shoemaker
Draft-Attach. A / in process for web posting
Prog. Report-A / in process for web posting

Draft-Attach. B / in LIGO review / Shoemaker
Draft-Attach. B / in process for web posting
Prog. Report-B / in process for web posting

Draft-Attach. C / in LIGO review / Shoemaker
Draft-Attach. C / in process for web posting
Prog. Report-C / in process for web posting

Draft-Attach. D / in LIGO review / Shoemaker
Draft-Attach. D / in process for web posting
Prog. Report-D / in process for web posting

Attach. Z / signed-off

Groupe Virgo / Laboratoire de l'Accellarateur Lineaire, Orsey (AV-LAL) / collaboration on detector modeling and 40 M program:

Draft-MOU / in review at AV-LAL
Draft-Attach. No. 1 / first year research plan / in LIGO review / Yamamoto and Weinstein

LIGO Outreach / collaboration between Hobart & William Smith Colleges and Gladstone High School :

Draft-MOU / in LIGO review / Raab

LIGO Weekly Site Telecon (Lindquist)

No site teleconference was scheduled Thursday, June 17, 2004 due to travel and safety audit at Livingston.

PROPERTY MANAGEMENT (Chargois)

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

No report (Hanford Inventory)

DOCUMENT CONTROL CENTER (Turner, Mak)

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

Finished all the processing and postings for the past LSC.
Worked on the SURF Orientation. Prepared agenda, reviewed presentations, and prepared transparencies for all the presenters. Created name badges, and updated forms needed for the student's packets.
Began the difficult task of compiling relevant information on all publications generated by LIGO staff/collaborators during the past 15 months. All but 3 of more than 40+ publications lack any publication cite information. Additionally, many reserved numbers for publications have never been turned in. These numbers could represent publications that aren't completed, or have been submitted and published but never given to the DCC. I'll begin to organize by author the publications that the DCC has not received in published form so that the necessary information can be obtained from the author and extracted for the NSF annual report. [Note: this information is required for the Annual Report for the NSF. --pel]

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

Electronic document activity has been very busy. Two DCN's with very long lists of attached drawings were submitted.

WE June 17, 2004	Packages	Faxes
In	18	30
Out	8	37

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

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

For ACCOUNTS PAYABLE HISTORY DATA: http://www.ligo.caltech.edu/%7Ephil/Weekly/AccountsPay.htm.

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

Placed one time standard purchase orders to Lavallee and Sun Microsystems for shipment to MIT and LLO. Followed up on past due deliveries on other standard purchase orders.
Completed the package for five change orders for Triad and submitted it to management for signatures on June 16, 2004.
Completed change order #2 to Great Impressions Janitorial which added funds and extended services through September 30, 2005.
Completed change order #24 to MIT which adds the final FY2004 quarterly funding. Routed it for corresponding signatures in Procurement on June 15, 2004.
Placed pcard transactions for Caltech and for the sites. Followed up on past due deliveries. Reconciled 31 Pcard transactions totalling $39,412.

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

Working on LSU contract to pay invoice on PO #1068310 and also in the process of setting up a purchase requisition/order for Joe Giaime.
Continuing to converse with Raytheon regarding an uncorrected invoice.
Working with Janeen Romie to prepare RFQs for Advance LIGO Control Quad Blades Prototype.

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

Worked on updating monthly reports.

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)

See above. The package for MIT change order #24 was routed to Procurement Services for signatures. It is over our (LIGO Purchasing Rep) signature limit.

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

The Critical Design Review for the Advanced LIGO seismic isolation system will be held on Friday, June 18, at the ASI Spascesystems facility in Pasadena. This is the last review prior to fabrication of the prototype for the BSC chamber.
Options are being discussed regarding construction of the outreach building at LLO. One possibility is the acquisition of a design/build contractor to perform both functions. This will be discussed further.

SUPPORT (Baldon, Lloyd)

>Irene Baldon

Continue to track Raindance Teleconference calls and assist users with any problem that they might incur. Raindance seems to be working beautifully and at present LIGO has only five (5) weekly calls still being made through AT&T -- one (1) was canceled this week.
Processed the paper work for twenty-six (26) new/revised trips. There are two (2) trips in various stages of completion before ticketing can be done and/or paper work completed.
Completed zero (0) Expense Reports and there are twenty-two (22) reports yet to be done. I continue to contact travelers who have outstanding Expense Reports (more than one (1) month old) to ask for their cooperation in sending me their receipts so that these can be closed in a timely manner. Presently are five (5) reports more than 30 days old.
Reconciled seventy-five (75) P-Card charges which required telephoning hotels and car rental agencies to verify which traveler used my card for what amount. Completed month-end and sent monthly report in as final.

>Dorothy Lloyd

Reviewed and recorded payments processed by Esther the week of May 31. Processed the usual invoices for payment. Tracked and followed up on invoice problems: two Sun invoices were billed incorrectly; identify two payments for Support Services which covered five invoices.
Continue to monitor contract and blanket order encumbrance and notify task managers when supplements are needed.
Jim continued with data entry in the LIGO database and helping out in the DCC.

ADVANCED LIGO (Cost Schedule Control Systems) T. Frey

>From: Thomas Frey <tfrey@ligo.caltech.edu>

See Advanced R&D Section.

Reports (Lindquist)

Operations Annual Report--the Annual Report for Operations is due at the end of June. I have prepared and distributed an outline and assignments, and have requested contributions by Friday, June 18, 2004. I have begun assembling contributions received to date.

Change Control/Contingency (Lindquist)

I have saved a copy of a change request submitted by John Worden at:

http://www.ligo.caltech.edu/~phil/ChangeBoard/CR040012.pdf

The request is for budget to insulate the exterior of the CP2 LN tank. This will reduce the frequency of "seismic bumps" from the LN tank. Four inches of rigid Styrofoam with an aluminum jacket will be installed. The change request is for less than the $50K threshold for information only requests. However, the amount represents a significant portion of the total vacuum equipment budget and may, therefore, merit some discussion during the next meeting of the LIGO Executive Committee (June 21, 2004).

Human Resources (Akutagawa)

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

Various personnel/payroll /HR related work.

Quality/Safety (Tyler)

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

No report this week (Livingston Safety Review).

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

Summary of Commissioning Activities at LIGO Hanford Observatory (Sigg)

H1 activities

A temperature scan of the H1 laser showed increased power with higher C. Details here.

The OMC commissioning has wrapped up with a concentrated effort to try to understand the modal decomsposition of the anti-symmetric port light both before and after the OMC. Details here, here and here.

The control plant of the IOO WFS has been diagonalized. Details here and here. This now allows to increase the power into the interferometer to 8W without introducing angular shifts due to radiation pressure. The interferometer was locked with 4.2W and annulus heating with the TCS. Details here.

Work began to equip the antisymmetric port with 4 LSC photodetectors. The rack and crates needed to be rewired, new photodetectors were prepared for installation, whitening filters were modified, another ASI box has been fabricated, tested and installed, and a new layout of the ISCT4 table is currently underway.

The new quartz oscillator has been set up. No tests with the interferometer so far. However, it seems to generate sidebands near 3.8kHz.

H2 activities

An anlog centering servo is running on WFS2.

The PRC feedback path has been changed to RM from common FM. This should give better rejection to differential motion. Details here.

In preperation of removing the (lagacy) Farady on the PSL table in front of the periscope a couple of measurements have been started. Details here and here.

The power on the PSL was remeasured. Details here.

Assemling of the TCS has started.

Preperations for the vent and the Faraday installation are underway.

Site activities

Finally recovered from the power problems that killed the disk on the main CDS server.

New heating elements have been installed to reduce 60Hz. Details here.

Some mysteries in the coupling of magnetic fields to the test masses. Details here.

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

L1 Commissioning highlights (Zucker)
---------------------------------------------------------------------
HEPI commissioning continues, primarily in the X endstation although the Y endstation is now physically complete and ready for operation. We are still teasing out the sensor correction transfer functions and improving the position sensor loops while working toward an isolation test. Some hiccups; we had an unexplained oscillation during one test (the safety watchdog tripped as it was supposed to and kept everything safe). Also we appear to have a valve which is malfunctioning in an unusual way. We are taking our time to understand these anomalies carefully before proceeding.

As reported below, the physical installation is seeing the light at the end of the tunnel; actuators are almost all in, plumbing is finished and leakchecked, and the corner station is now 'wet'; the electronics and cabling are all installed and under checkout. We have some alignment adjustments to make on HAM2 and BSC2 actuator positions, but expect these each to take only a day or so.

Meanwhile the interferometer crew is warming things back up gradually with the expectation that we will open the beamtubes next week or the week after. At that point we will be timesharing commissioning between HEPI and getting the interferometer back online. So far the mode cleaner has been brought back up the REFL port realigned; the PSL and FSS are tweaked back up and loop gains characterized, after the successful change of the PMC topology to match the H1 plan.

The thermal compensators are near completion in the optics lab; Mike Smith has been visiting this week and has helped us get everything aligned and in place. Still waiting for a few parts but we expect to be ready to move them out on the floor ahead of schedule.

Safety (Rich Riesen)
---------------------------------------------------------------------
This reporting period has been consumed with the LLO safety audit.

#MZ Note: I am proud to add that LLO was commended for its level of pro-active preparedness and safety consciousness. Special thanks are due to Rich, and also to Katrina, Tom, Allen and Rupal for their hard work in helping prepare for the review. Everyone at LLO also deserves recognition for thinking and working safe.

LLO Facilities and Infrastructure (Sibley)
---------------------------------------------------------------------
All of the HVAC air handler condensate tray have been checked and cleaned where necessary. The only trays holding water are in AH1 and AH2 which serve the LVEA.. Both end stations and the OSB for some reason condense much less water. It may be a problem with the outside make up air supply. I am checking with Siemens to determine what the system of ops is calling for and if that is correct.
The fire alarm problems we were having at the X end station have been resolved by Pratt Landry. The dialers to the monitoring co. were not getting a dial tone. Reconnection the wires at the punch down panel fixed the problem.

L1 Interferometer (Frolov)
---------------------------------------------------------------------
Mike Smith and I tested the TCS CO2 laser and the beam polarizers in the optics lab. We found that the laser's polarization is not purely linear. Using two beam polarizers we were able to improve the extinction ratio from 1:10 to 1:3000 with power transmissing of ~70%.

Andri and I measured the FSS and MC open loop transfer functions and verified that the loop ugfs are at the nominal values. We found that the FSS common gain needed to be increased to bring the ugf to the nominal value as was measured before the PMC was moved outside of the FSS loop. We have not determined the reason for the gain change yet.

LLO Seismic retrofit (Rich Abbott)
---------------------------------------------------------------------
1. At long last, we have begun to fill the corner station HEPI piping with hydraulic fluid. The leak checking process found one small pinhole leak which was fixed on site by the vendor who made the part.
2. Hydraulic pumps have been rolling in the corner station for two days in a local re-circulating mode to flush out the filters and local piping
3. All the electronics are loaded in the corner station HEPI analog rack. We are still in the process of hooking up all the cables and sticking numerous cable labels on. This process will continue into next week.
4. The installation of actuators is nearing completion. There are 3 piers still to go on the BSCs, and then all the actuators are installed. That will conclude the installation of 28 housings. The completion of bolting the hydraulic actuators is largely complete, but held up by the need to reposition ITMY and HAM3 after a they moved during actuator installation. A procedure is in the works for solving this issue.

LLO Seismic retrofit (Oddvar Spjeld)
---------------------------------------------------------------------
Completed
- assembly of HEPI Actuator Housings units 100% complete (36 units total!)
- HEPI installation follow-up in the LVEA - one chamber remaining!
- valve and sensor placement and identification chart created

Ongoing
- complete assembly of the last eight horizontal actuators
- update drawing package for the HEPI Actuator to reflect as-built
- complete revision of the HEPI Assembly and Installation Procedure
- update valve and sensor placement and identification chart
- provide drawings, procedures and photos for the HEPI web-page

HPLF and L1 Commissioning (Rupal Amin)
---------------------------------------------------------------------
no report

General computing (Roddy)
--------------------------------------------------------------------
* Current bandwidth usage can be seen at http://teche.ligo-la.caltech.edu/mrtg/LLO-Router/130.39.245.1_1.html
* Archived bandwidth usage can be seen at http://teche.ligo-la.caltech.edu/mrtg/archive/ under the dated folder for the week of interest.
* The evaluation went well with the tape backup software. I have received a quote for the product and I am planning on purchasing a set of licenses. Until the switch in the new building dies yesterday, I had intended on beginning the production installation and setting everything up.
* We had a switch die in the new building yesterday. It is a little mysterious what happened. This coincided with a new fiber installation so I am not sure if it is partially because of that or not. After many hours of troubleshooting and trying different combinations of things, I ended up asking Foundry to ship us a replacement switch. I have combined the load in the new building onto one switch. There was no response from the switch even from the console port which should not happen.
* Ordered a couple of Sun workstations on the matching grant program at 60% off. This was part of the normal upgrade cycle. Sany and Natalia's workstations will be upgraded.
* The usual round of account additions for students, etc.

CDS (Parameswariah)
--------------------------------------------------------------------
Ran into data dropout problems with the RFM 5579 network. Identified problems originated in the RFM Bypass switch. Rolf confirmed with the manufacturer that they had seen similar problems before. Will have to check the revision numbers on these units.

Worked on HEPI Watchdogs and added the state preservation to the watchdog system. Now the watchdog has a resettable indication that shows the channel which caused tripping of the watchdog.

Working on the HEPI Status screens, will have the first rev implemented soon.

Installed a mv162 for the ATOMIC CLOCK gpstime comparison at the End Y. Fired up the code but still have some hardware/serial port issues to sort out.

CDS software support (Khan)
--------------------------------------------------------------------
1) Helped Rupal in calibrating the PSL Photodiodes

2) Collected data for Sany's E2E model

3) Prepared the proposal and design documents for the EPICS Data Acquisition modules

S2/S3 Burst Analysis, AdL IO Modeling, and HPLF (Franzen)
--------------------------------------------------------------------
1) WaveMon veto study of S2 software injections (http://www.ligo-la.caltech.edu/~franzen/restricted/inject3.html)
- Found that I had put in the wrong sampling rate for H2:LSC-REFL_DC (2048 Hz instead of 256 Hz) in the DMTGen script. Recalculated and updated table.
- New plots: injection-WaveMon coincident events vs hrrs, injection-WaveMon coincident events vs. waveform types
- Updated link with tables of veto efficiencies and dead time fractions.
- A short conclusion has been added.

2) Worked with Rupal Amin (see his report) on characterization of the new laser.

3) Studied the output of the latest Melody AdLIGO Mode Cleaner model. See http://www.ligo-la.caltech.edu/~franzen/melody/amber1.html for a detailed report on this.

Data analysis (Yakushin)
---------------------------------------------------------------------
1) Upgraded RLS server on gridmon and gateway.
2) u1d5@t3-2 and u1d7@t3-10 failed and were replaced.
3) Verified that DB2 8.1 (fixpack 5) replication works under RH9 by configuring replication between databases on ldas-pcdev1 and ldas-pcdev2 at LLO. There are some problems though that were not present in the previous DB2 version: during testing either capture or apply programs ocassionaly die. The problem was traced to too small tablespaces allocated by default to various auxilary replication tables. Trying to figure out how to set these sizes in an optimal way or, perhaps, allow them to grow as needed at the expense of performance.
4) Testing Condor.

E2E IO/Suspension Modeling (Dodda, Jamal, Rogillio and Yoshida)
---------------------------------------------------------------------
Nafis J. started to build a mode cleaner e2e box (MC box) using the triangular cavity primitive. The specifications of the actual LLO 4k MC have been given to the MC box, and the three MC mirrors have been suspended from the SOS suspension box we built previously. The length sensing mechanism has been implemented and being tested. Kristen R. continued the estimation of HAM table motion based on OSEM sensor DAQ signals and theoretical transfer functions (from the suspension point to the OSEM position/Yaw signal) computed by e2e. Previously, we used the time domain method (modeler) to obtain the theoretical transfer function. This week, we started to use the frequency domain method (modeler_freq). This improved the accuracy of the resultant transfer function in the frequency range lower than 0.5 Hz. Raghu D. has installed the most recent releases of e2e and SimLIGO. They will be placed in a new directory (being created by Shannon) shortly.

Detector/Technical Support (Coyne)

no report

40 Meter Interferometer (Weinstein)

Mach-Zehnder:

We conducted a telecon to review the motivation and design of a Mach-Zehnder (MZ) interferometer to place the two EOMs in parallel rather than in series, to kill the "sidebands on sidebands" problem. Osamu presented these transparencies. Minutes are here. The general concensus was to proceed as planned.
Osamu and Rob installed the Mach-Zehnder optics and EOMs on the PSL table; here's a picture. Everything is roughly aligned (beams in both arms are passing through EOMs and heading towards the 3rd EOM). Everything fits beautifully!
The Pockels cells for FSS, AOM and reference cavity are all aligned well. FSS is locked with low power(~200mW of PMC transmitted) now. It is pretty stable.
The mode cleaner has been locked with both arms of the Mach-Zehnder (individually).
After some effort, Osmau has aligned the M-Z, and has seen fringes at the mode cleaner reflected port, 50 feet away.
Next step is to set up the servo.
Jay modified a rev D PMC servo for use in the M-Z servo. All wiring schematics are complete, and Ben has added the M-Z RF distribution to the RF distribution drawings. Ben and Bob installed all of the wiring to control the Mach Zehnder: the 1Y2 rack cross-connects, and the cables to the RD PD and the PZT mirror. Ben brought over the newly modified M-Z servo, and put it in place. It is now waiting for its new front panel that Ben designed; it should arrive on Monday. Ben and Jay are now putting together the EPICS database records and screens.
The PZT-actuated mirror is spec'ed for P polarization, but it is receiving S polarized light. Presumably, this causes more light to be transmitted through the mirror to the PZT stack, heating it up; but the PZT curie temperature is 380 C, and we don't think there will be any where near enough power to cause damage.

PSL:

The FSS is locked and running with reduced light in order to install the Mach Zehnder. The ISS also has reduced light, so it's not operating at all.
The FSS continues to show signs of instability due, we think, to a dying 829 op-amp. Osamu and Ben will replace the 829, and put in a diode clamp for protection, when Osamu returns from Glasgow the week after next.

LSC:

The new LSC cpu is still misbehaving, awaiting attention from Rolf, Alex, and Rob, all of whom are away this week.
The LSC aux crate 2 has not been set up yet, but it will be installed and commissioned soon.
Ben will go around and cut unused wires on all the Pentek cables to stop propagation of 1 MHz clock signals.
Seiji continues to think about finding improved error signals.
Bob has strung heliac cable from the signal generators to the EOMs on the PSL table, but they won't replace the existing RG405 cables until the M-Z is fully commissioned.

South Annex bake ovens (Bob Taylor):

Bob continues to clean parts and do bake jobs for Larry Jones.
Bob has cleaned and shipped a load of HML Mag wire for Larry.
Bob continues to build up the new ultra-clean bake oven. He's now baking parts of the oven in preparation for calibration and testing.
Bob is assembling a new, smaller "dirty" oven D, with a cold trap.
Bob is looking into the design & construction of a new super-large (6 foot long) bake oven for AdvLIGO.

Lab infrastructure:

Our front end reflective memory loop went down on Wednesday, apparently due to some glitch from the length control rack, which was not properly bypassed. Jay bypassed the LSC rack and was able to reboot all the front end systems (suspension controllers, epics server, mode cleaner angular controls, DAQ...).
The forepump for the turbopump that pumps of the annulus regions of the chambers, TP3, is failing, and the foreline pressure is rising. All valves for the annulus lines have been closed, and we're waiting for the forepump to fail completely, to see if the hardware interlock kicks in as it should.
Ben Olson wrote up a nice summary of all the problems with the STACIS system. Steve will double-check, and start arranging for the malfunctioning components to be repaired by TMC.

Thermal Noise Interferometer (Libbrecht)

no report

LASTI (Ottaway)

LASTI Weekly Report (Ottaway, Rommie, Ruet, Barton, Williams, Mason,
MacInnes, Allen, Heefner, Mittleman)

Triple Installation

This week the controls prototype was bench tested and roughly positioned into the Yend HAM chamber. It also became apparent that since we have installed the HEPI under the Yend HAM of LASTI that our usual techniques for getting one of the Yend HAM doors no longer work. This problem will possibly not be an impediment to fine tuning the triple installation. But will certainly need to be solved before Advanced LIGO Seismic can be installed in that chamber.

The course triple installation went very well and fine alignment and positioning will occur next week. One thing that became obvious is that the platforms that are installed over the HAM piers during HAM work will no longer work with the HEPI in place. This made using the teflon highway and the lift platform a tight squeeze. We are now waiting for the in-vacuum geophones to be completed to finish the installation on that HAM chamber and to begin testing.

HAM Chamber

We have implemented the adaptive feed forward control in 3 axis on the HAM chamber. This controller uses the STS2 on the floor and the 6 geophones on the optical table. So far the results have been pretty good. Some of the results can be found on the Lasti ilog. On the June 11 entry

http://emvogil-3.mit.edu/ilog/pub/ilog.cgi

Progress has been slow this week due to the installation of the triple pendulmn.

BSC Chamber

We have mostly completed a system id of the new BSC installation. Results on the Lasti ilog on June 17.

Data Analysis and Computing (Lazzarini)

Simulation and Modeling (Bhawal)
Weekly Physics Meeting
------------------------
Monica Varvella from Virgo Groupe, LAL, Orsay presented status of the Mach-Zehnder simulation with E2E. Luca Matone from LHO described the problems of the Output Mode-Cleaner (OMC) and discussed with Hiro, Matt and Biplab how an astigmatic input beam to OMC may affect the transmitted light and some related observation in simulation by Hiro and Biplab.

Output Mode Cleaner (OMC)
---------------------------------
(Hiro,Biplab)
We interacted with Luca on OMC problems. Given the data of astigmatic beam profile, waist position and size in x and y axis, the output of the OMC is analyzed. So far, it is very difficult to have a consistent idea what is going on. The output Q and I demodulated signals have 00 and 11 modes almost the same size. But the transmissions of 00 and 11 cannot be of the same size at a given length. Also, the astigmatism predicts a splitting of TEM02 and TEM20 resonance point, but the measurement shows no splitting. e2e has been modified so that the OMC can be properly simulated, including the curvature mismatch in one axis.
The spectra of the transmitted beam for an astigmatic and a round input beam including various higher order modes is posted at
http://www.ligo.caltech.edu/~bbhawal/OMC/
[OMC_1.pdf - the figure; OMC_1.txt - the explanation]

FFT code
---------------
(Hiro) Completed the modification to include the explicit curvature of BS. Also implemented in this version is a support to flip x-axis of mirror phase maps. This support is useful because FFT uses an axis convention that z axis is always pointing from RM to ETM, while the mirror phase maps measured has the z-axis pointing out from the mirror to HR side.

Alfi
-----------
(Bruce)
        - Much consolidation of box loading/displaying code
          which came to my attention while working on E2E_PATH
          issues.
        - New Box menu item allows user to open an existing file now if the user desires,
           as well as the usual option to overwrite (PR 299.)
        - Working on user capability to change the current working directory.

(Melody)
Finished on fixing problem reports 439 and 461. Working on updating the ALFI documents to incorporate new changes.

Also performing regression testing using JGo 5.0 and Java 1.4.2.

LIGO Data Analysis System

Software Systems (Blackburn)
The shared object library for discovering frame data external to LDAS systems was modified this week. The binary distribution had its dependency on openssl and crypto packages removed. Documentation was also created to explain the extended calls exposed to TCL and Python.

While trying to use lsync, it was discovered that the ::MOUNT_PT variable had to be all on the same line. This issue is being addressed as the number of mount points at some locations is in the hundreds. The ::MOUNT_PT variable will support TCL multi-line syntax.

Work continues on PR 2526 to solve a diskCacheAPI message passing issue between the C++ and Tcl layers. It has now passed testing on a tandem system and is being verified on the development system.

Also in the diskcacheAPI, the check for file existence from oldQuery.diskcache macro(PR #2529) has been removed.

A Swig interface to the diskCacheAPI to allow the Tcl layer to respond efficiently to requests from the controlMonitorAPI continues to be developed. The interface has been finalized and implemented at the C++ layer. This now needs to be integrated with the TCL layer.

Ran through the system and integration test suite and updated the results on the web site.

The top level description page for the TCLGlobus project has been posted at: tclglobus.ligo.caltech.edu. This page gives information about the project and has several links to related/contributing projects.

Hardware Systems (Anderson)
CIT
Dan
-Continued the transfer of files from HPSS to SAM-QFS. Also continued deleting files in HPSS after confirmation that they were successfully transferred.
-All post-S3 data from LLO/LHO has now been FrCheck'd and is in /archive.
-Dealt with catastrophic failure of /samrds at LHO. A double disk failure in a T3 meant that the whole filesystem needed be reconstructed and restored from tape. We did this "by the book" (i.e. without any special knowledge of what data was being written to the filesystem at the time of the failure) and it worked quite well. In the future we should be able to do this a lot faster--we had a problem this time due to /dmt being misconfigured.

Hari
-Working on trying to get GridCVS up and running on a Linux Box first. If that goes successfully then I will test it on a Solaris machine.
-Helping Igor with running LDR.
-Upgraded rls server on ldas-gridmon.
-Setup accounts for new users on ldas-grid
-Helping with the debugging of the rls server on ldas-cit to see if we can figure out why it is hanging constantly.

Al
-Configuring LM Sensors to work with BB. Using a rrd to achieve this goal.
-Helped visiting Post docs setup there laptops to work with ldas
-Fixed a network problem with m27
-Completing a power/HVAC audit on the 6th floor machine room
-Updated install file for the new kernel upgrade.

MIT(Keith)
-troubleshot bad memory on SF880 - Sun scheduled to replace ram dmt raid server failed
-attempting to copy off as much data as possible prior to attempting rebuild
-installing certificates and associated software packages on ldas-grid, ldas-gridmon, ldas-jobs, ldas-pcdev1 machines

LLO (Igor)
-Upgraded RLS server on gridmon and gateway.
-u1d5@t3-2 and u1d7@t3-10 failed and were replaced.
-Verified that DB2 8.1 (fixpack 5) replication works under RH9 by configuring replication between databases on ldas-pcdev1 and ldas-pcdev2 at LLO. There are some problems though that were not present in the previous DB2 version: during testing either capture or apply programs occasionally die. The problem was traced to too small table spaces allocated by default to various auxiliary replication tables. Trying to figure out how to set these sizes in an optimal way or, perhaps, allow them to grow as needed at the expense of performance.
-Testing Condor.

LHO (Johnson)
-T3-1 (/samrds) failed the past Friday, but was eventually revived. The data that was on disk at the time already had archive copies, so no net data loss. Dan Kozak restored /samrds to it's pre-crash state.
-olddataserver (responsible for local filesystem backups) will not boot. Referred to in PR#2562
-I have been assisting Igor and Keith with the Condor/LDR installs this week.
-Duncan Brown is testing out DAG and LSCdataFind at LHO, and has been fully loading the cluster for the past two days. This has caused our AC system to become strained, and put it in a humidification feedback loop Wednesday morning. Temperature got up to 27C, but no apparent harm was done to anyn hardware. Temperature stabilized to 25C after humidification was turned off.
-I have had discussions with John Zweizig (at LHO this week) about the data corruption. Per his suggestion, I have examined all S2 and S3 Level3 RDS data for dataValid problems. Found problems in a few frames from each run for LLO data.

Data Analysis Activities (Lazzarini)

Creighton:
This week I added heterodyning to the pulsar generation test code in LAL, and started updating the pulsar condor scripts for the new version of the narrowband-SFT extraction code.

Shawhan:
* Moved various burst analysis group documents and links into the new electronic notebooks which have been set up for
http://www.lsc-group.phys.uwm.edu/bursts/investigations/ s2index.html and
http://www.lsc-group.phys.uwm.edu/bursts/investigations/ s3index.html

* Starting to work with SURF student Matthew Wroten on inspiral filtering issues and new waveform consistency checks.

Sutton:
This week I've again been concerned mainly with the analysis of LIGO-TFClusters and TAMA events from the SG13 MDC simulations, mainly coincidence and efficiency calculations. I''ve posted some preliminary results via a link in the LIGO-TAMA elog. Also, Sylvestre, Mavalvala, Zanolin, Riles and I have finished the TFClusters code walk-throughs.

Sylvestre:
o worked on the TFClusters review (code review, documentation, tests, ...)
o started to transfer the TFClusters code to Michele Zanolin, who is currently visiting Caltech.

Weinstein:
- Conducted Inspiral code review telecon #3.
- Reviewed the S2 GRB publication.
- Working with three new SURF students on topics in LIGO data analysis:

Michael Ross Quinn [michaelq@its.caltech.edu], Caltech Junior: Investigations of the Ability of LIGO to Measure Gravitational Wave Properties Using a Pulsar Source

Jill Naiman [jnaiman@ucla.edu], UCLA senior: Modeling Gravitational Wave Burst Sources in the Galaxy

Kevin McCarthy [kmccarth@UCSD.Edu], UCSD junior: Analysis of gravitational wave signals from inspiralling compact binaries

General Computing (Wallace)
MIT:
(Keith)
-Ordering matlab licenses
-Helping urops with gc system
-Removing relay domains from mailserver

Livingston:
(Shannon)
* Current bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/LLO-Router/130.39.245.1_1.html
* Archived bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/archive/ under the dated folder
for the week of interest.
* The evaluation went well with the tape backup software. I have received a quote for the product and I am planning on purchasing a set of licenses. Until the switch in the new building dies yesterday, I had intended on beginning the production installation and setting everything up.
* We had a switch die in the new building yesterday. It is a little mysterious what happened. This coincided with a new fiber installation so I am not sure if it is partially because of that or not. After many hours of troubleshooting and trying different combinations of things, I ended up asking Foundry to ship us a replacement switch. I have combined the load in the new building onto one switch. There was no response from the switch even from the console port which should not happen.
* Ordered a couple of Sun workstations on the matching grant program at 60% off. This was part of the normal upgrade cycle. Sany and Natalia's workstations will be upgraded.
* The usual round of account additions for students, etc.

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
- Lots of user support for SURF students and mentors.
- At the weekly Safety meeting I reviewed the Computer Use Policy and other computer policies. This was a reminder to staff and an
introduction for the SURF students.
- Purchased the media converters for the WAN connection upgrade to GigE. No time for the change has been scheduled yet.
- Helped several users update their antivirus software. They were running Symantec 7.5.1, when they ran liveupdate to get the latest virus definition files they received a message that their files were up to date, but they weren't. Installing Symantec 8.1 fixed the problem.
- Installed some Office and Windows updates on a user's computer.
- Downloaded some more software from Caltech ITS.
- Setting up two computers for the SURF students.
- Removed some computers from an office to get it ready for a new staff member.
- Removed the hard drives from some old computers so Ed Chargois could dispose of them. Put out some broken monitors for Ed to get rid of as well.

CIT:
(Mike)
-Worked on troubleshooting a computer for Ben Abbott over at Wilson House.
This looked like a virus but it turned out to be a corrupted Operating System. (He is backup and running)
-Continued loading a pc as a visitors engineering workstation for the third floor of W/B.
-Troubleshooting an access issue with George Stokes, this concluded with George rewriting the access database to a more current version and then later upgrading the database to access 2003.
-Our print server KUMA went down due to a hardware failure. After working this issue with Larry we swapped this server out.
-I worked in the server room rerouting some network cables and swapped out a few bad network cables that had some bad RJ45 connections.
-I had a problem with my own workstation due to a hard disk failure. This seems to be a heating problem. After running many diagnostics on the drive and computer it came up clean with zero errors. I put back in the hard disk into my workstation and it booted like nothing ever happened. This had me down for at least two hours. The next time this happens I will be calling Dell to get this motherboard replaced.
-Received the PDMWorks server from Livingston. I back this up and then started on reloading this as a server. This came pre-loaded as a win 2000 workstation after talking to Larry we decided to reload this to 2000 server. I came across many issues trying to find the correct drivers for the Dual ATA/100 IDE Channels, but I now have this loaded with 2000 server. I am shooting to have this up in running by late Friday June 18, 2004 for users to login. This server is to be the primary vault for Solid Works.
-Ran security/office updates on the following workstations: Maddalena, M63-visitor, and Irena Petrac.
-Ghosted Irena Petrac's workstation and the PDMWorks server from Livingston.
-Setup a surf student's workstation; she is working for Riccardo's group.
-Other misc. onsite/phone user support.

(Lisa)
- Upgraded the spam and virus filters on the mailserver. The new version of the software is a substantial improvement over previous versions.
-Began moving folks who are still using ssh tunnels for their e-mail over to ssl + smtp-auth. One reason for this is that anyone who uses smtp-auth for outgoing mail has that mail whitelisted by the spam filter. This will eliminate the rare but annoying problem of when outgoing mail gets trapped. Moving people over is taking longer than anticipated because many people need to have their mail client software updated before they can use ssl.
- Created some new accounts.
- Began looking at the specs of stand alone tape drives that have a higher capacity than ait-2
- Continuing to work on the new application server.
Mail Stats 6/10 - 6/16/04
Messages Accepted:      16642
Spam Rejected:          5555
Viruses Rejected:       1177
False Positives:        30
Total Mail Thru:        23374

(Veronica)
LSC website: Updates to the June meeting website. Updates to the Observational Results page.
- LIGO website: Working on changes of the backend database for LIGO/LSC rosters. Posted updates to various pages. Working with George Stokes on the changes he makes to the DCC database. Helped George restore a missing query in the new version of the DCC.
- CaJAGWR and Project Science: Updates and user support.

(Larry)
-Spent a couple of days dealing with procurements, licensing and maintenance contracts. Mostly, following up with the different companies trying to track down the paperwork. All but a few issues have been resolved.
-Testing out a few more webcam options.
-The SURF students have arrived. Working on getting them setup. Mostly, logistical issues and account creation.
-Worked on a couple of printer issues. Setting up drivers on a couple of PC's and Linux workstations.
-Working with Mike on computer equipment installations and movement.
-After a couple of crashes on the new printserver, we swapped the disk drive to the old unit and I am working on a h/w replacement for the unit.
-Working with Veronica on a number of web changes. Most dealing with the policy updates and new information on acceptable usage of LIGO equipment. Trying to find the best location on the LIGO web to put that information.
-Tracking down some ssh issues a few people had with canopus. Still a few more tests to run but the Xforwarding issue has been resolved.

Advanced LIGO and Supporting R&D (Shoemaker)

AdvLIGO Project Management

(C. Wilkinson)

Advanced LIGO replanning for development is nearing completion. AOS and IO plans have been added to the AdL project controls web site and are updated on a monthly basis. The remaining systems - ISC, LDAS, and DAQ - are in the replanning process. The project controls team is also starting to scrub the fabrication and installation phases for all systems. The turn-around time between the request for monthly progress data and the published result is still too long at ~3 weeks. This is expected to improve when the replanning process is complete and the baseline is finalized.
Even though the replanning is not complete, the Primavera data is being used to obtain bottom-up budget forecasts and to examine various schedule and funding what-if scenarios.

(T. Frey)

Continued to research the issue related to Primavera Project Planner software and how percent complete is calculated when using duration as the weighting factor. Related to this subject, we discovered a known challenge to this calculation, when large numbers of hammock activities are being used as part of the project data. See the following references for this information:

· http://www.ligo.caltech.edu/~tfrey/p3_backup/SID1999324103355.htm

· http://www.ligo.caltech.edu/~tfrey/p3_backup/BN1999101616444.htm

Suspension

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

AdLIGO Suspensions
Still working with Ian, Calum and Mike P-L on the ETM blade drawings. As Ian is out for the next two days, I'll edit the drawings in Acrobat and send them out today, via Gina, to Lobart and SJI.

Worked at MIT with Dave O., Laurent and Ken on un-crating the MC from its case and suspending the masses. All looks great. The only casualty we had in shipping is a glass container of screws. Went over the transfer document with Dave O. Discussed the items that need to be shipped back to CIT and LHO. Coordinated with Ken and Doug on alignment equipment. After I got back here, coordinated with Mark on small details. Sent Bob Taylor some small parts for cleaning and baking and shipment to MIT.

Will start on a Product Design Specification for the top section of the ETM quad structure today. Met with Calum and Mike P-L last week on this and hashed out the details.

Working on an optimization of the suspension eddy current damper.

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

Advanced LIGO SUS

Silicate Bonding - Visit with Ken Bower at Stanford

Norna and I visited with Ken Bower in an effort to procure information on the practical aspects of silicate bonding. He was very nice and open with all the information referent to his silicate bonding work for the Probe B project.
He provide us with a list of the supplies he used, which are the same as the ones Sheila was using at Stanford.
He did not talk much about the chemical issues of the process since this was Jason Gwo's area of expertise.
On tooling, they had different positioning gizmos developed for their particular application.
For cleaning, they had success with a final cleaning with UV lamps, however, he mentioned this is good only for final cleaning but not to remove the bulk of contamination. The sheeting of the water on the surface was for him the indication that the surfaces to be bonded were cleaned, very much like we've done.
He did not have any experience with baking bonds.
On the issue of bubbles when bonding large areas, they were always present. As long as the bubble does not dominate the bonded area, the strength of the bond is not compromised. I think we have the same experience. He mentioned that increasing the solution amount helps to minimize bubbles but then the bonding strength is not optimum.
The shear tests that he performed were very similar to the ones we are doing at Caltech, just hanged a weight on the bonded parts.

Penultimate and Reaction Masses - Glass Fabrication

We also took a trip to Santa Cruz to visit Valley Design, a manufacturing company of glass components. I think most of their expertise comes from silicon wafer fabrication. We requested an estimate for the manufacture of the penultimate masses. They were not able to commit on the 1/10 wave flatness required on the flats. They could handle all other aspects of the fabrication.
They are manufacturing some of the thin "Q" susbstrates, that will give us an idea of their work and capabilities.

From: Jay Heefner <jay@ligo.caltech.edu>

AdL SUS
======================
Installed electronics and controls for MC triple at LASTI. Testing could not be completed due to a lack of a Dspace system.
RFI Retrofit
=======================
Began ordering cables and feedthroughs needed for the LLO corner suspension systems.

Anti-Image Board for Low Noise DACs
==============================
Design and prototype testing are complete. Test results are summarized in T040124-01. Board layout should be complete by Friday. Boards should be available for site installation in 3 weeks.

M-Z Servo for 40 M
================================
Modified a rev D PMC servo for use in the M-Z servo. All wiring schematics and installation are complete. Database records are needed to complete the system.

Pre-stabilized Laser

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

AdvLIGO PSL
===========
AEI are beginning to think of stabilising the frequency of the 200-W laser and are thinking of using a reference cavity identical to the ones we currently use.

Other Laboratory R&D

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

Last week we welcomed Nicky Virdone from Mayfield Senior High,

this week it is the time of Yanyi Chen, EE undergrad from LSU, that will work on e.m. spring circuitry and AnaMaria Effler, Caltech physics SURF.

Maddalena

I’m continuing to take Transfer Function measurements now reaching a resonant frequency of 40mHz.

We discovered a strange behavior in the transfer function because above the resonant frequency the funtion goes slower than the expected slope 1/f^2 for pure structural damping, then we may have a source of viscous damping, probably in the control circuit, which generate this behavior and limits the passive attenuation at 1 Hz to 40 dB.

Figure 1 Transfer Function measurement which shows a resonant frequency of 40mHz but a slower slope respect a pure structural damping

Then we are making some analysis to understand if the cause of the wrong behavior is a bad choice of the integration time in the thermal compensation circuit.

Moreover I’m writing my master thesis.

Barbara

In this week I still working on the assembling of the mechanics of the cavity. After the research of the working point of each blade, I'm mounting the LVDTs . I hope that at the beginning of the next week the suspension system will be ready . In the meantime I'm finishing the piezo's driver circuit.

Nicky

I am setting up a MGAS filter that will measure maraging creep under load at high temperatures (up to 200 degrees Celsius). When the parts arrive, I will build an oven that will surround the filter with a hole at the bottom allowing measurements to be taken outside of the oven of the payload movements at various temperatures and at different times.

~Nicky Virdone

juri

Prepared report to COC on the flat top beam test interferometer, LIGO-T040138-00-R

Available at ligo.caltech.edu/~desalvo/Report-COC.doc

I used my Mathematica notebook to compute the electromagnetic field across the mirrors of the Mexican Hat cavity where an initially launched fundamental mode is reflected back and forth between the misaligned mirrors until a steady-state field distribution is obtained and I analyzed the cases of a symmetric tilt of 10-7 and 5*10^-8 radiants. In the case of Flat Mexican Hat cavity, we see a high coupling with the higher modes for the larger tilt and almost a negligible effect for the smaller tilt. I analyzed also the case of Mexican Hat Concentric cavity and I found, as expected, a lower sensitivity to misalignment effect. Quantitative comparison with the perturbation theory is in progress.

For additional information about this report, contact whitcomb_s@ligo.caltech.edu