Weekly Report for Week Ending June 3, 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 7, 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:

Special Announcements:

Weekly Report Highlights

LSC Issues (Saulson)

Minutes of LSC Executive Committee telecon
Friday 28 May 2004

Attending: Bruce Allen, Barry Barish, Patrick Brady, Sam Finn, Joe Giaime, Albert Lazzarini, Dave Reitze, Keith Riles, Peter Saulson (minutes), David Shoemaker, Daniel Sigg, Ken Strain, Rai Weiss, Stan Whitcomb, Alan Wiseman

Announcements:

a. Stan Whitcomb has asked to step down from his role as co-chair of the Burst Group, because of the burden of his duties as Deputy Director of the LIGO Lab. We thank him for his successful leadership. We are happy to be able to announce that Peter Shawhan has agreed to serve as co-chair of the Burst Group, joining Erik Katsavounidis who will continue to serve in that role.

b. There has been progress on several MOU's with other projects. An MOU and attachment for joint burst searches has been successfully negotiated with AURIGA, and will be signed soon. Almost as much progress has been made on the MOU with Virgo, which also includes attachments for joint inspiral and burst searches; after some small changes, it is expected to be in a form that everyone will want to sign. We also noted the initiation of discussions with GEO on revising the GEO/LIGO MOU to more closely reflect the actual practice of collaborative data analysis.

Discussions about Lab/LSC restructuring:

At the LSC Executive Committee dinner in March, Barry Barish presented a case for re-examining the structure of the relationship between the Lab and the LSC, and in particular for looking for ways to integrate them more closely. This is timely, in light of the upcoming need to repropose for the operation of LIGO. The topic is one of the main ones on the agenda of the upcoming Lab Program Advisory Committee meeting (3-4 June.)

A small group has been formed to facilitate LSC discussions of this topic. Bruce Allen, Sam Finn, Joe Giaime, Keith Riles, Norna Robertson, Peter Saulson, and David Shoemaker will explore the options and help to formulate the LSC's position in these discussions. That small group will keep the LSC Executive Committee and Council fully informed.

Barry and Stan will circulate to this group the materials that they are preparing for the PAC, and will also share the minutes of the PAC's discussion of these issues. Soon afterward, the small group will hold its first meeting.

Talks at upcoming meetings:

Discussions with Nobuyuki Kanda have resulted in satisfactory scheduling of LSC data analysis talks at the July GR17 meeting in Dublin. There will be a 20 minute overiew talk followed by four 10 minute talks, one from each of the Search Groups. Special topics will be covered in posters instead of oral presentations. There was some discussion of the difficulty of squeezing in all of the talks, given that the GR17 organizers allotted only three hours to the presentation of results. Sam and/or Barry may bring up this issue at the next meeting of GWIC.

Karsten Danzmann just sent a request for two talks to be given at the LISA Symposium (held the week just before GR17 at ESTEC, in Holland.) One talk is to cover the status of LIGO, the other a summary of results from data analysis. Barry and Peter will work with LSC members who were already planning to be at the LISA Symposium (who include Sam Finn, Patrick Brady, and David Shoemaker) to select which of them will give the talks.

Policy on choosing meeting speakers:

Barry pointed out that most high energy physics collaborations distribute the role of speaking at meetings among a broader list of people than has been our practice so far in the LSC. The tradition in that community is that all members of the collaboration, not just those who have been closely involved in data analysis, share the honor of presenting results at conferences. This is a way of ensuring that even those who have mostly contributed to the instrument keep focused on the analysis results, as well as allowing the honor and visibility to be shared more fairly.

There was general agreement that the LSC ought to move in this direction. Patrick Brady suggested that the LSC set up a visible policy and perhaps even a list of candidate speakers, so that the fairness of the policy can be easily monitored.

When to apply the whole LSC author list to a "technical" paper:

Barry and Stan raised the question of whether there can be cases of papers whose list of contributors is so large that the author list should be the whole LSC author list. As Stan put it, at some point deciding who had made a sufficient contribution for authorship becomes almost impossible.

While many on the Executive Committee saw merit in this concern, the question remained of how to set the criterion. Barry proposed a threshold on the percentage of LSC members who would have been included in a restricted author list; if it went above 10 percent, say, then the presumption should be to switch to the full LSC author list. (Exceptions would be allowed for good reasons.) Another possibility would be to set criteria on the nature of the paper; if it represented "official" work in furtherance of the LSC's goals, say a status report on development of a subsystem for advanced LIGO, then it should have the whole LSC author list. On the other hand, if the work were truly novel, and not (yet) adopted as part of a baseline plan of the LSC program, then a restricted author list would be appropriate.

This issue will be referred to the Publication Policy committee, with the request that they draft proposed wording.

Choices of dates for upcoming LSC meetings:

The Executive Committee affirmed the dates of the upcoming August meeting as Mon 16 August through Thu 19 August, at LHO. LSC members should note that this is somewhat earlier in the month than has been our tradition.

The Exec Comm also proposed the following dates for subsequent meetings: Sat 6 Nov and Sun 7 Nov for the next weekend Observational Results meeting, and Sun 6 Mar through Wed 9 Mar (note new choice of days of the week) for the March full-agenda LSC meeting at LLO. These dates were chosen to supply sufficient margin in advance of GWDAW-9 (15-18 Dec, in Annecy) and the APS meeting (16-19 April, in Tampa, FL) respectively. These dates are not yet set in stone; if there are substantial conflicts with LSC members' schedules, these proposed dates may be revised. LSC members are asked to check their calendars, and notify the Spokesperson soon if they think the dates should be different from these proposed dates.

(Note added since the meeting: Jim Hough writes that 6 - 9 March conflicts with the Glasgow academic calendar, and asks that we consider 20 - 23 March instead. Dave Reitze points out that 20 Mar conflicts with the March APS meeting. We will continue to poll the LSC before deciding on the Mar 2004 dates.)

We had been considering Atlanta and Milwaukee as possible sites of the November meeting. During the discussion, we also considered the possibility of asking MIT again to host this meeting. (Since it would not coincide with MIT commencement and would again be on a weekend, we expect that this time it could be held at MIT, not Tufts.) We will make a final decision after evaluating the success of the June meeting. We will in particular want to make sure that LSC members, especially ones from Europe, find the travel to Boston easy enough..

LIGO Laboratory Administration (Lindquist)

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

LSC Research Updates through Aug. 2004, and Prog. Reports through Feb. 2004

Balearic:

Attach. A / in LIGO review / Lazzarini

GEO 600:

Attach. B / in LIGO review / Barish
Attach. Z / in LIGO review / Barish
Attach. A Prog. Report / in process for web posting

Hobart&William Smith:

Attach. A / in LIGO review / Lazzarini
Attach. B / in progress / supplemental info. solicited from PI
Attach. Z / to PI for sign-off
Prog. Report / in process for web posting

National Astronomical Observatory-China:

Attach. No. 1 (for design of a non Gaussian interferometer prototype) / first draft / in LIGO review / DeSalvo.

LIGO Weekly Site Telecon (Lindquist)

No site teleconference was scheduled Thursday, June 03, 2004 due to the PAC meeting.

The list of current actions revised to reflect the status of open actions assigned through the last update (March 4, 2004) may be found at ACTION LIST.

PROPERTY MANAGEMENT (Chargois)

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

No report.

DOCUMENT CONTROL CENTER (Turner, Mak)

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

Web pages for the DCC give simple how-to's for document numbering, easy access to the latest on-line documents, and search capabilities for the DCC database. Take a look. . .

ACCOMPLISHMENTS

Finalized most of the preparations for the upcoming PAC16 meeting.
Continued testing and fine-tuning the latest version of George's DCC database program.

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

ACTIVITY

Electronic document activity was steady which included addressing a long list of problematic documents that have been submitted.
Continued the process of reorganizing the entire DCC filing system.

06/03/04	Packages	Faxes
In	14	16
Out	6	12

Press here to access the DOCUMENT CONTROL CENTER WEB PAGE .

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

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

Press here for ACCOUNTS PAYABLE HISTORY DATA.

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

Completed change order #10 to the Lightwave Electronics subcontract to add $105k for the amplifier upgrade. Faxed the change to the vendor.
Completed and submitted the response to the DCAA auditors. Submitted the FY2003 spending for all LIGO subcontracts, along with the name of the contact person, phone number, and address. Researching this information was time-consuming but necessary to meet the short deadline to submit LIGO's information on the subcontracts. Working on catching up on the recent change orders submitted.
Completing the various change orders to Excel Engineering.
Waiting to receive back the change order to ASI submitted for approvals.
Placed one-time standard purchase orders as requested for delivery to Caltech and the sites.
Placed pcard transactions for shipments to Caltech and the various sites. Reconciled the transactions billed during the week. Called vendors who submitted invoices for payment that had inadvertently forgotten to charge my card.

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

No report this week.

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

Completed report for FY2004 Operations and R&D as of May and posted it on the network.
Completed report for Visitor Program as of May.
Completed report for MIT.GRID as of May
Submitted 5 Cost Transfers to reclassify expenditures which had been posted to incorrect accounts.
Submitted request for 2 new accounts to be set-up for Laser Maintenance at the sites. The new accounts are: LIGO.HAN/2.13 NSFLIGO.FY02OF and LIGO.LIV/3.13 NSFLIGO.FY02OF.

Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport.

SUBCONTRACTS MANAGEMENT (Petrac, Jasnow)

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

MIT: CO No. 23, allocating the third quarter funds, was released to MIT.

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

No report (vacation).

SUPPORT (Baldon, Lloyd, Tischler)

>Irene Baldon

No report (vacation).

>Dorothy Lloyd

No report.

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>

For list of documents that are being used to develop Adv. LIGO Cost and Schedule, see http://www.ligo.caltech.edu/~tfrey/Cost_MTG_082002/

Out of the office Friday the 28th and Monday the 31st.

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

Accomplishments:

· The following is a summary of status by sub system:

§ COC - http://ligo.caltech.edu/~tfrey/COC_AdvLIGO/COC_index.html

§ Still need completed WBS dictionary and BOE.

§ Received progress data through May 28.

§ Review and input in progress.

§ PSL - http://ligo.caltech.edu/~tfrey/PSL_AdvLIGO/PSL_index.html

§ Received progress data through May 28.

§ Review and input in progress.

§ Comments / formal acceptance pending.

§ http://ligo.caltech.edu/~tfrey/PSL_AdvLIGO/CB_rev_041304/

§ AOS - http://ligo.caltech.edu/~tfrey/AOS_AdvLIGO/

§ Finished working on revisions to the baseline schedule, cost book, and WBS dictionary per this weeks telecom.

§ Posted updated data for review.

§ Prepared and sent out progress data request for period ending May 28.

§ IO - http://ligo.caltech.edu/~tfrey/IO_AdvLIGO/IO_index.html

§ Received progress data through May 28.

§ Review and input in progress.

§ Still need completed WBS dictionary and BOE.

§ Working on revisions to the baseline schedule and WBS dictionary per previous telecom.

§ SUS - http://ligo.caltech.edu/~tfrey/SUS_AdvLIGO/SUS_index.html

§ Review of BSC task list on going. I am to provide Janeen with changes for functionality.

§ SEI - http://ligo.caltech.edu/~tfrey/SEI_AdvLIGO/SEI_index.html

§ Prepared and sent out progress data request for period ending May 28.

§ ISC - Comments / Data pending from Dennis C. and Peter F.

§ LDAS - No action required at this point in time.

§ INSTALL - No action items pending.

§ DAQ - No action required at this point in time.

§ PM - No action required at this point in time.

§ FAC - No action required at this point in time.

§ SUP - No action required at this point in time.

§ LASTI - http://www.ligo.caltech.edu/~tfrey/LASTI/lasti_index.html

§ Received progress data through May 28.

§ Review and input in progress.

§ 40-Meter - http://www.ligo.caltech.edu/~tfrey/40m/40m_index.html

§ Received progress data through May 28.

§ Review and input in progress.

§ TNI - http://www.ligo.caltech.edu/~tfrey/TNI/TNI_index.html

§ Received progress data through May 28.

§ Review and input in progress.

· ROSTER DATABASE:

§ Continued input of changes / corrections regarding supervisors and departments.

§ Received confirmation that the authorship list is good, pending comments from management.

§ Worked with Irena regarding new features.

§ Discussed with Irena the potential for creating a web based update process for Attachment B, Item 8.

· COST BOOK DATABASE:

§ Reconciling cost account listing from cost book and schedule loading. Per discussion with Carol, account numbering system will change to accommodate split funding type.

§ Continue to work with Carol and Florence starting work setting up "crosswalk" between accounting and progress reporting.

Development of the Advanced LIGO Project Controls Guidebook continues.

Project Web Site for posting schedule and progress related data continues to be updated with the latest and greatest.

· See http://www.ligo.caltech.edu/~tfrey/index.html

Reports (Lindquist)

LIGO Video--The chamber vent planned in early June in Hanford has been delayed. Therefore the plans for filming at Hanford have also been delayed.
Vistors Program Annual Report--An Annual Report was submitted via FastLane, and we have received funding for the next fiscal year beginning August 1, 2004.
Operations 2004--we have received funding for the second half of FY 2004. An MIT change order is in process.
Operations Annual Report--the Annual Report for Operations is due at the end of June. I have issed a "straw person" table of contents and proposed responsibilities, and have received some suggestions back. Proposed due date for draft material is June 18.
FY 2005 Budget--We will also start the budgeting process for FY 2005 in June. Florence Kaufman is working on a "straw person" budget to start the process.

Change Control/Contingency (Lindquist)

Ther are no open change requests.

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>

The Hanford site safety audit was completed during the past week. As part of this audit, the 2003 safety audit Action Items (AI) status was reviewed and all of these AIs were found to be satisfactorily closed. The audit team submitted to the LHO safety audit representatives, ten new action items and several comments regard the LHO operations. The draft LHO safety audit report is in-work and is expected to be distributed for comment during the next week.
Meanwhile, the LLO safety audit is scheduled for the third week of June.

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

Summary of Commissioning Activities at LIGO Hanford Observatory (compiled by L.Matone)

On Friday, we suffered a failure of the main UPS system (elog).

By the end of last week, we had the digital wavefront sensor system on the Mode-Cleaner working on H1. With the new system in place, we locked the alignment of the cavity to its input beam by actuating on the suspended optics. Before the change, the alignment was made by acting on the input beam and letting the mirrors be free (elog).

It was observed that with the H1's new MC alignment system, we get an input beam shift as the laser power is increased that the current WFS system cannot handle because of the low bandwidth (elog , and elog).

The servo to center the beam onto the Beam-Splitter was installed and currently goes on operation once H1 transitions to the CM state (elog);

More measurements were made on the Output Mode-Cleaner in order to track down where the excess noise is coming from (elog, and elog, and elog);

Matt Evans has been visiting us and he has been focusing his attention to the Input Mode-Cleaner alignment (IOO-WFSs) and the ASC sytem (see elog). H2 has been making it through the CM step and this morning its sensitivity has been seen to reach the S3 level.

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

L1 Commissioning highlights (Zucker)
---------------------------------------------------------------------
At the X endstation, HEPI commissioning continues to progress. With the modal position loops all locking reliably, the concentration has been to establish accurate sensor correction transfer functions to use for subtracting the floor velocity errors sensed by the Streckeisen seismometer. These are time consuming to acquire because of the low frequencies involved.

A somewhat mysterious trip of the "watchdog" safety system last week may have been relatively innocuous; a later, similar safety trip was correlated with people working normally around the end station and opening/closing doors. The trigger level may thus just be set too conservative (for the current "passive" configuration, that is).

On HEPI installation, piping is now complete in all stations and the Y end is ready to power up! Actuator installation is on track to wrap up week after next (see Rich's summary below).

An interference between the new HEPI actuators on HAM1 and the optical table IOT1 was resolved by installing height adapters on the table legs. This has the ancillary advantage of widening the aisle between IOT1 and the VEA wall.

Andri and Rupal finalized the new reference cavity pickoff arrangement to prepare for the new FSS (just past RTRB design review and in layout...) Rupal has also worked on getting better transmission through the PMC cavity. In the process an apparent decline was noted in the MOPA output power (with respect to prior baseline). It is not yet clear if it is an intrinsic reduction in laser efficiency or just alignment-related.

Safety (Rich Riesen)
---------------------------------------------------------------------
Found no safety concerns on my weekly site tour.

Continuing work on general safety issues and the up coming safety audit.

Installed first aid cabinets with first aid and CPR supplies at the end stations and the staging building, including appropriate signage.

Updating Laser Users poster and building a itemized (by machine) machine/wood shop authorization list.

LLO Seismic retrofit (Rich Abbott)
---------------------------------------------------------------------
1. Finished installation of HEPI components in the Y-end. Testing can now begin from the normal controls. The electronics has been tested up to the plane of the VME interface.

2. The HEPI piping contractor finished today. The contractor is now in the process of leak checking the corner station using the same methods as in the end stations.

3. 58 out of 62 HEPI field cables have been run in the corner station. The electronics is now in place in the corner station racks. Interconnection of all the electronics is next and will continue well into next week.

4. Assembly work is underway to prepare the pier pods for installation in the corner station.

LLO Seismic retrofit (Oddvar Spjeld)
---------------------------------------------------------------------
Completed
- received the IOT1 Leg Modification fabrication parts on Wednesday 6/2
- installed the leg extensions and the shortened stiffeners on IOT1
- assembly of (2) HEPI actuator housings for BSC # 1 completed
- follow-up of HEPI circuit box mounts fabrication, delivery Tuesday 6/8

Ongoing
- assembly of hydraulic actuators for HEPI housings
- continue assembly of HEPI actuator housings for the next LVEA BSC chamber
- verify content on PDM Server and file DCN for updated assembly drawings
- have PDM Server packed and shipped off to Caltech by Wednesday 6/9

HPLF and L1 Commissioning (Rupal Amin)
---------------------------------------------------------------------
HPLF: No report. We are waiting on IPG Photonics to complete re-fusing the 100 W laser power supply. They now possess the appropriate fuse box and will be updating LLO on the date of equipment delivery.

PSL: Late last week, the new FSS pickoff was installed. Several hours were spent realigning almost all optics downstream of the FSS branchline (thanks Andri). Optical power into the cavity is now 26 mW, and power being transmitted through is approximately 16 mW. The new pickoff is currently upstream of the PMC MMT. I have also been attempting to improve the throughput of the PMC. I have improved the transmission of the PMC slightly by retuning the present MMT and basic alignment, but this has not terrifically improved PMC transmission. Thus far, I have computed a three lens MMT that would permit us axial freedom. However, this solution would take LLO further away from being identical to LHO. At the present, 3.86 W of light is flowing to the EOM chain. EOM RFAM reduction will continue later today or tomorrow.

General computing (Evans)
--------------------------------------------------------------------
(Shannon Roddy is away today, Tom filling in:)

We are in the process of setting up Solaris and Windows workstations for the summer visitors and guests. We are taking this opportunity to upgrade the operating systems on these workstations.

CDS (Parameswariah)
--------------------------------------------------------------------
CDS gateways - river and london upgraded. Still working with web server cgi/perl script issues. In the process of getting the DMT monitor reports setup.

Frame builders - fb0 and fb1 are both up and running. StorEdge 3510 FC array has been configured and attached to fb0. Working with LDAS to get the new T3 disk array running to store DMT trends. DMT trends are now being written to this new disk.

Working on getting an estimate of disk space on both fb0 and fb1.

Writing code for autogeneration of status screens for HEPI.

Last night a random set of processors went down, they were brought back online.

CDS software support (Khan)
--------------------------------------------------------------------
1) As per request from Brian, I am porting the dtt code over linux platform so people could analyze the data using Linux machines.

2) Helping Sany in acquring data for his study of correlation between Optic's Yaw coupling and the ground motion.

S2/S3 Burst Analysis (Franzen)
--------------------------------------------------------------------
Trying to process software injected S2 PG data with WaveMon. The purpose of all this is to produce a fair and objective estimate of the deadtime at different thresholds.The current bottleneck is that we do not have a way to merge AS_Q data frames (containing software injections) with a large set of auxiliary channel data frames (which are required by WaveMon). I am trying to use DMTGen (J. Zweizig) but have not been succesful so far. J. Zweizig and myself are trying to specify and solve the problem.

Data analysis (Yakushin)
---------------------------------------------------------------------
LDAS admin:

1) Got certificates for ldas-gridmon. Configuring LDR.
2) /dmt is up and running.
3) Shipped LL0269 to CIT.

Data analysis:

1) Processed SG13 LIGO-TAMA MDC frames with waveburst.

2) Wrote perl scripts to prepare a list of time intervals processed by waveburst at various stages of the pipeline and to compute the final live time table for different time shifts. Applied the scripts to S2 triggers with/without playground.

3) Per Michele's request prepared some material (for waveburst review report) about various tests done with waveburst (detecting time shifted injections on SG7, studying how event reconstruction depends on the start of 120 second time intervals processed by waveburst, waveburst performance on hardware injections).

Detector/Technical Support (Coyne)

CDS

see also the CDS weekly meeting minutes in the commissioning archives:

CDS Software

Rolf Bork reporting

Finished up work on the new LSC EPICS and front end software, at least to the point where we are ready to test in place. A new rack mount PC and 2.2GHz VME processor were installed today. The PC allows for remote booting of the VME processor and will also run the LSC EPICS. The VME processor is ready to go and I was able to download the latest code from CVS and compile it on this CPU. The EPICS requires a few more hours of work, but should be up sometime tomorrow. At that time, I will transfer the latest EPICS screens and demo the system.

CDS Hardware

Jay Heefner, Ben Abbott reporting

HEPI

1) The reworked 44-pin cables arrived in Livingston on Monday. They seem to be fine so far.

2) Called Powell to order a spool of 16 pin Spectra-strip cable. They are checking the lengths of the spools that they have, and will let me know tomorrow.

3) Gave Livingston a list of cable names to expedite their labeling and installation efforts in the vertex.

RFPD Redesign:

Presented the current design at the CDS weekly meeting, and received some helpful suggestions. These will be worked in where possible, and the final, intermediate design will be made available next week.

Anti-Image Board for FDI DACs

===================================

- completing testing of prototypes and preparing for a review of the design at next week's meeting.

LLO EMI Upgrade

====================================

- Reviewed drawings for LVEA SUS controls.

- Ordered necessary emi feedthroughs and cables.

AdLIGO SUS

==================================

- documented and disassembled the temporary Dspace controls for the MC triple assembled in the south annex. Electronics hardware will be shipped to MIT and installed next week.

TCS

Mike Smith

I am going ahead with the 6-2-04 schedule: at both sites, assembly will begin on 6/7; installation will begin on 6/28, and commissioning will begin on 7/12. Delivery of parts are expected to agree with that schedule. Mc Master hardware will be ordered this week, for arrival next week. I am in the process of making assembly drawings and releasing the REV A drawings for the parts designed at CIT. Ken Mason has released REV A drawings for the enclosure and camera box.

I have been accepted to make a poster presentation on the LHO 4K Thermal Compensation System, in session C.1(i) Gravitational-Wave Detection Detector Performance, Operation, and Commissioning..

Errant Beam Baffles

Mike Smith, Ken Mailand

Still working with Ken Mailand to clean up the documentation for the errant beam baffles before submission to the DCC.

OMC

Janeen

Mark and I had a meeting with Dennis and Peter F. We will freeze work on the OMC for a week or two while more work is done at the sites to determine what should be done in terms of a new LIGO OMC. I've worked up a tentative schedule for the work after that, for an installation at the end of August.

PSL

PeterKing

A small number of high voltage amplifiers were tested under a dummy load that simulated the PZTs in a mirror mount. These is intended to be used for stabilising the beam pointing out of the 10-W laser. The beam pointing out of the amplifier was observed to change quite a lot over the course of a day.

The capacitance as a function of bias voltage for the C30642G was measured for the ones we have in house. The unit-to-unit capacitance variation was far smaller than that observed for some Hamamatsu photodiodes.

Lee Cardenas

The 10 watt laser alignment and mode match has been completed.
But still have the power output not being stable as power degrades with time.

Optics Analysis

Erika D’Ambrosio

I am keeping on working in collaboration with Andri and Brian. We discussed what next strategies can be for characterizing the response of L1, after we found the interferometer does not lock on the power peak when the arms are misaligned.

The set of simulations I run to model L1 and H1 when the focusing length of the ITM mirrors changes depending on the absorbed power, show different responses of the two interferometers, that are now the focus of our discussions and I gave my own interpretation in terms of geometrical balance between the arms (L1 has a better contrast than H1) and optical coupling between recycling cavity and driving beam (total losses increase when mode matching gets better and more power gets stored in the recycling cavity).

Optical Contamination Cavities

Lee Cardenas, Liyuan Zhang

OTF Lab. (W. Bridge)
The test for contamination of (21) pieces of the coax, teflon cables are completed.
We are still taking ring down and beat frequency measurements
as well as the RGA of the chamber every other day. NO CHANGE
Please see Dr. Zhang's report for the treated data.

Absorption Test Measurement prototype in progress
The scanning for absorption of the15 cm dia. sapphire substrate is still in progress.
as we are scanning at different depths Z= 10, 15, 20, 25, 30, 35 ,40, 45 mm and so on.
to have better understanding of the sapphire absorption.

The need of three more rods and the modification
of the two rods of 27" inches are in progress.
The plates being cut to size still in progress!

Scatterometer system in standby

OTF Lab at Lauritsen ROOM 38 NO CHANGE.

Cavity #3
The cavity is locked and we are taking ring down and beat frequency measurements every
day as well as the RGA for the chamber.

Cavity #2 Test cavity optical set up is now in progress, we have new chamber,
new optics and the laser that was returned from 40m lab is being installed.
This cavity will replace the existing one at Bridge.

40 Meter Interferometer (Weinstein)

· Mach-Zehnder:

We continue to prepare a Mach-Zehnder (MZ) interferometer on the PSL table to apply 33 MHz and 166 MHz sidebands in parallel, rather than in series. The MZ draft design is being further developed by Osamu.
Osamu has estimated the intensity noise of the Mach-Zehnder again with more realistic, less conservative assumptions. He finds that with a gain of 40db at 1 Hz, pole at 1 Hz, and UGF as low as 100 Hz, it does not contribute additional intensity noise. Still, we will probably be able to operate with a UGF more like 10 kHz to handle PZT resonance.
Monica Varvella is developing an e2e simulation of the MZ to verify these calculations.
We will implement the servo with a modified PSL PMC servo board. We can use a PMC card to demodulate RFPD signal, filter, and drive the PZT. We will use a PZT that is almost the same as the one used for the PSL PZT (a bit smaller), so it should work. The PMC at the 40m has a UGF = 7.6 kHz, we'll probably be able to go higher with this PZT/driver.
Jay is modifying a PMC servo board to give the desired filter shape. Jay is updating the IO wiring and rack drawings to accomodate the servo board, monitoring and control. EPICS database records will be added for control of the servo. Ben traced out the wiring that will need to be installed to control and monitor the MZ servo. This should go in this week.
We have a spare 33 MHz RFPD for detection of the MZ error signal. Steve has acquired all the mirrors, mounts, HWPs, EOM platforms, beam dumps, etc. He is assembling them on a side table to make sure everything fits.
We plan to organize a telecon for the next week or 2 to review the design of the MZ interferometer. All interested LIGO and AdvLIGO people are encouraged to contact ajw@ligo.caltech.edu to attend.

· PSL:

Osamu continues to work on the PSL FSS board to improve its UGF and stability. The UGF used to be ~ 400 kHz, but now it's ~ 100 kHz; not sure why. He found an oscillation at 56 kHz, while the servo board notch filter was set at 70 kHz. Ben changed the notch filter to 56 kHz, reducing the oscillation considerably. Ben also changed the FSS RFPD to better damp an oscillation at ~100 kHz, but it didn't help. Then Osamu found a broken high-bandwidth AD829 op-amp, and fixed it (for the 2nd time!). Now the FSS UGF is up to 200 kHz before it goes unstable. There's still some phase delay limiting it; still under investigation.
The new intensity stabilization servo (ISS) installed last week by Flavio and Peter King is working very well. The 16-day plot shows that before the current shunt actuator was modified, AMPMON typically was at 10.8+-0.1 W (min/max range). After the shunt was modified, but before the ISS servo was active, it was at 10.4+-0.1 W. Presumably, the current shunt modifications are responsible for the shift, and it should be possible to estimate the magnitude of the shift. After the ISS servo was engaged, the min/max range was dramatically reduced, to 10.4 +- 0.025 or so (these are all eyeball estimates).

· LSC:

The new LSC system is going in! From Rolf: Finished up work on the new LSC EPICS and front end software, at least to the point where we are ready to test in place. A new rack mount PC and 2.2GHz VME processor were installed today. The PC allows for remote booting of the VME processor and will also run the LSC EPICS. The VME processor is ready to go and I was able to download the latest code from CVS and compile it on this CPU. The EPICS requires a few more hours of work, but should be up sometime tomorrow. At that time, I will transfer the latest EPICS screens and demo the system.
Ben has finished the updated RF distribution drawings for the new LSC system; now under review.
Rob is putting together a first draft InputMatrix40m.c code for LSC lock acquisition on the full dual-recycled interferometer. The infrastructure is in, it should be quick to code up lock acquisition strategies. The insfrastructure for dither locking is there in principle.
Seiji has been thinking about the proposed dither signal for MICH control. The signal doesn't depend on the PRC phase at all, and now Seiji has a deeper understanding of why. He is using this understanding to look for ways to reduce the dependence of the signal (gain) on the SEC phase.

· Suspensions & oplevs:

Fumiko installed a simple oplev pitch servo filter in the ETMX digital suspension controller, and then took transfer functions to measure the frequency and Q of the pitch pendulum at various OSEM damping gains and oplev damping gains. She determines the OSEM servo gain that provides critical damping of the pitch pendulum motion, and also the oplev servo gain that provides *almost* critical damping before oscillation sets in. She will now try different oplev filters, and also see whether arm lock acquisition and arm lock stability are improved with these gain settings.
Shihori continues to work on developing a procedure for diagonalizing the suspensions' output matrix.

· South Annex bake ovens (Bob Taylor):

I have been working with Janeen and Calum in support of their efforts in the clean room, which has taken the lions share of my time this week.
Completed 2 bake jobs and started another which is baking as we speak.
Built a wire winder for Larry jones.
Cleaned actuator parts for Larry Jones and have them ready to ship tomorrow.
Shipped the two large containers with Janeen and Calum's parts today.
Made phone calls to venders for Larry Jones to track down missing parts for actuators.
Cleaned and will bake 4 ham spacers for Ken Mason.
Cleaned and am baking two view ports for Ken Mason.

· Steve and Ben Olsen continue to diagnose problems with the STACIS system, before we start sending some of the isolators back to TMC for repair.

Thermal Noise Interferometer (Libbrecht)

This week we finished analyzing the data from our Sapphire measurement, getting all of our root-2's and pi's and such right. Based on our measurements of both coating thermal noise and Braginsky noise in Sapphire, we are now able to predict levels of thermal noise in advanced LIGO with either Sapphire or fused silica mirrors. Sapphire is better by about a factor of three above 100 Hz, where its thermal noise is dominated by its coating. Braginsky noise dominates below 100 Hz.

Attached is a plot of the expected AdLIGO strain sensitivity, based on our results. We use our measured values of the coating loss for a silica-tantala coating, and of Braginsky noise in Sapphire. We used the BENCH values for substrate Q's in both Sapphire and silica, and to estimate shot/radiation-pressure noise, designated "Quantum Noise" in the plot.

LASTI (Ottaway)

Thermal Compensation Enclosure
Several modifications were made to the enclosure and camera box after the drawings were reviewed. All changes have been made and fabricators notifed. The hardware was also ordered.

LASTI BSC Clean Room
New legs have been designed and sent to fabricatos to quote for the LASTI clean room. These legs provide the strength and height we need for the advanced LIGO seismic installation.

Other LASTI Activites
This week we spent most of the the time preparing for the upcoming vent. Rich continued to work on the adaptive feedforward system for the HAM HEPI.

Data Analysis and Computing (Lazzarini)

Simulation and Modeling (Bhawal)
Weekly E2E Physics Meeting
--------------------------------------------------------------------
Monica Varvella of Virgo Groupe, LAL, Orsay presented her work on simulation of Mach-Zehnder interferometer using E2E. Hiro, Matt, Virginio, Biplab discussed about results from FFT simulation taking beam-splitter curvature into account.

Beamsplitter curvature effect
----------------------------------------------------
(Hiro, Biplab)
As an extension of the FFT study using actual mirror phase map, we focused on the curvature of the beam splitter.

In terms of modal model, when a TEM00 field is reflected by a BS with a radius of curvature Rm, then the reflected field acquire a phase alpha_ref = -z/z0*Rfield/Rm, where z is the distance between the BS and the waist position, z0 is the rayleigh range and Rfield is the curvature of the field. BS becomes a lens which add a phase to the transmitted field by alpha_tra = alpha_ref * (- (n-1)/2) ~ -alpha_ref/4.

e2e was also modified so that the effect of the beam splitter curvature can be simulated. Various runs using FFT model and e2e have been done. Indication is that the BS curvature seems to effect the imbalance of upper and lower sideband power. So far, we do not have a quantitative conclusions about the effect of the BS curvature. FFT code is now being modified so that the effect of the curvature is simulated more realistically.

It seems that the curvature does not have effect on the asymmetry observed in recycling cavity internal beam intensity profiles. The asymmetric variation in beam-splitter mirror map around the curved surface mainly causes such asymmetry in beam profile.

Code development and maintenance
----------------------------------------
(Melody) Modeler:
Fixed the build-e2e script to exclude building the installation documents, since most users are misled from the warning messages. Will be moving the document in the e2e webpage. Also modified the script to unset some hardcoded paths.

Alfi
----------
(Melody)
Finished fixing several problem reports (PR 453 and 428).
Working on a few more problem reports and moving on to doing regression
testing using the new JGO library.

LIGO Data Analysis System

Software Systems (Blackburn)
The main focus this week has been developing and delivering a new package that allows the data discovery functionality of the LDAS diskCacheAPI to be used external to LDAS. At this time we have a prototype for the TCL driver script that will be used as a test- bed for a Python production driver script to be developed else- where. The TCL driver script has been tested against the full LDAS shared object and all of its internal dependencies on LDAS. A new shared object with minimal dependencies is almost ready for tests with the TCL driver script, but an issue with unresolved symbols has to be resolved before the next step. We do have this new deliverable now being built in the nightly LDAS build, providing a modular tarball of the necessary components for distribution. We hope to be able to share the prototype with UWM (origin of request for this package) by the end of the week.

In order to separate out cleanly the minimal set of code needed for the external diskCache shared object, a significant amount of rework on LDAS makefiles had to table place. In addition a new library had to be created from a subset of existing libraries.

Python binding similar to those used by the TCL driver script that supervises the new data discovery shared object have been added to the distribution.

The problem report outlining a need to be able to throttle the number of jobs active in any LDAS API (PR 2398) has now been fully tested and closed.

A similar problem report (2399) outlining a need to throttle the number of jobs in the dataConditionAPI based on memory usage has been reopened. It has proven more difficult than expected.

Problem Report 1852 which described a bug with unmatched braces in user commands has now been closed. The managerAPI now properly reports the unbalanced braces error to the user.

Problem Report 2445 on the diskCacheAPI which addressed an issue with improperly handling of lstat errors has now been closed out.

A new tab has been added to the controlMonitorAPI. This page will allow graphical views of the time ranges for which frame files of a particular type are available in an LDAS system. It uses the information stored in the diskCacheAPI to generate the graphes. This is still under development and will make it into CVS some time next week.

All the system/integration tests were repeated on June 1st. All test gave nominal results on the current CVS code base under development.

Reviewed the use of C++ containers in the diskCacheAPI to see if the algorithms guarantee uniqueness of any query on the cached file objects. This mostly hinged on the behavior of the hash_map class in the STLPort template library. Hash_map is not part of the STL standard so it was important to determine if this implementation guarantees uniqueness of the entries that are hashed (and it does!). A proposal to use bloom filters in the diskCacheAPI was floated this week. Bloom filters do not provide uniqueness and could potentially postpone error messaging that is best handled up stream or worse, provide datasets for analysis that are not uniquely in agreement with the requested data in a job. At this time, Kent and Ed feel that the bloom filters would be the wrong technology to use in the diskCacheAPI.

Hardware Systems (Anderson)
Caltech
-------
(Dan Kozak)
* Continued retrieving data from HPSS; had to do some work to get HPSS
running again after DCE crashed.
* Got missing S2 RDS files onto tape at CIT, LHO, LLO.
* Set up /dmt filesystem at LLO.
* Unwedged ldas-archive staging a couple of times.
* Finished importing and FrCheck'ing E10 LHO data at CIT. All this data
is now in /archive/E10.
* Exported tapes of post-S3 data at LHO (LLO done last week) for
shipping
to CIT.

(Hari Pulapaka)
* Added accounts for login access on ldas-grid.
* Downloaded the new condor and will install that on the test grid
system today.
* Downloaded gridcvs and getting familiar with it.

(Al Wilson)
* Worked on datacaches:
Replaced drives and reseated cables on datacache7 (sgwb)
Replaced a drive on datacache5
Replecaed a drive on datacache1
* Installing RH enterprise on the test IDE-RAID server at Caltech.

(Stuart Anderson)
* Determined that LDAS builds and passes all unit test on
Red Hat Enterprise Linux 3.
* Upgraded LDAS-DEV network switch firmware to test out version
needed on larger production switches.
* Updated DMT trend frame mirroring scripts to point to new
locations (/dmt QFS filesystem) at the Observatories and
moved the location at Caltech to SAM-QFS.
* Found another cluster node with a kernel crash in kswapd and rebooted.
This appears to happen about 1 per node-fortnight under load with
the RH9 kernel build.
* Installed new 2200VA UPS and cleaned up power distribution in
605 Millikan.

MIT
---
(Keith Bayer)
* Connected ldas-pcdev1 and ldas-jobs (Dell dual / quad)
boxes to ldas and gc networks.
* Completed LDR transfer of MDC frames.
* Continuing LDR S2 L1 frame transfers.

Livingston
----------
(Igor Yakushin)
* Got certificates for ldas-gridmon. Configuring LDR.
* New /dmt QFS filesystem is now up and running.
* Shipped post-S3 LL0269 SAM-QFS tape to CIT.

Hanford
-------
(Ben Johnson)
* Researched ways to access the APC UPS status, with the ultimate goal
of using them to instigate an automatic shutdown of the servers.
* Rerouted some of the power cabling for the cluster. Some nodes are no
longer getting power via LDAS's transformer, but we can now run a 276
CPU job without tripping the 3x100A breakers.
* Examined the power consumption of all electronics in the LDAS room.
Emailed spreadsheet to Albert.
* Replaced node33 harddrive.
* Finalizing data corruption report with Vern Sandberg. It must be
finished for the upcoming LSC meeting in Mass.

Data Analysis Activities (Lazzarini)
Creighton:
This week I prepared a talk on the pulsar S2 analysi(e)s for the PAC.

Mendell:
The StackSlide Monte Carlo code is producing numbers, but there are
bugs that I will be trying to fix at the LSC meeting.

Sutton:
I've spent most of the past week debugging codes used to produce MDC frames for the bursts group, and validating the frames themselves. The big discovery was that in the LIGO-TAMA frames the scripts were adding a the simulated signal into both polarizations; this explains earlier confusion about the amplitude of the signals in those frames. This issue has now been resolved. Testing of the MDC frames used in the LIGO low-frequency search is almost finished, and no serious problems have been found (yet). I have to put it off completing these tests until after the LSC meeting.

Sylvestre:
o Worked on finishing the S2 simulation work for TFClusters.
o Developed tests for the TFClusters review.
o Prepared a talk on the burst group results for the PAC meeting.

Yakushin:
1) Processed SG13 LIGO-TAMA MDC frames with waveburst.
2) Wrote perl scripts to prepare a list of time intervals processed by
waveburst at various stages of the pipeline and to compute the final
live time table for different time shifts. Applied the scripts to S2
triggers with/without playground.
3) Per Michele's request prepared some material (for waveburst review
report) about various tests done with waveburst (detecting time shifted
injections on SG7, studying how event reconstruction depends on the
start of 120 second time intervals processed by waveburst, waveburst
performance on hardware injections).

Lazzarini:
I continued to work on understanding the statistics of the estimator for the stochastic background search. I was able to derive expressions for first and second order statistics of our optimal filter that show how bias is introduced at second order. Those who are interested in the details are referred to the following URL: http://www.ldas-sw.ligo.caltech.edu/ilog/pub/ilog.cgi? group=stochastic&date_to_view=06/02/2004&anchor_to_scroll_to=2004:06: 02:18:20:43-lazz

General Computing (Wallace)
MIT:
(Keith)
-LSC conference work
-Configuring IDEASv11 for urop
-Switched over to new mailserver (sendmail w/SSL AUTH)

Livingston:
(Shannon)
Nothing to report.

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
- Fixed some path problems with new software added to the application license server.
- Installed Solaris 9 and Netscape 7.0 on a user's Sun computer.
- Tried to do a disk copy to a new disk for a user who was having disk problems. The copy worked, but the new disk is not bootable. I'll have to do a disk image and restore to the new disk instead.
- The new fiber line between LHO and PNNL is in. It is only a little shorter, 23 km as opposed to 26 km, but the losses are less, 15 db instead of 23 db. I will be purchasing the media converters and working with PNNL to schedule testing of the GigE connection prior to cut over.
- The SURFs have started to arrive. I've set up user accounts and helped them get started using the computers.
- Following up on some Sun computers that were purchased back in March and have still not been shipped.
- There have been discussions on how best to ensure user compliance with the Computer Use Policy.
- Resurrecting some old network paths to put the GC network back in to the LVEA for some commissioning projects.
- Some time spent on CDS software development.
- The usual user support.

CIT:
(Mike)
-This week I ghosted the following user workstations & NT servers: 40meter
- Bob Taylor, Steve Vass, Osamu Miyakawa, and M17-visitor, M3-visitor, M18-visitor, M25-visitor, M53-visitor, Cindy A. workstation/laptop and all NTSRV's.
-Ran security OS/office updates on the following user workstation: Osamu Miyakawa, Bob Taylor, Lisa Goggin workstation/laptop, M18 visitor, M25 visitor, M3 visitor, M17 visitor, M53 visitor, Bill Kells, and Stuart Anderson's workstation/laptop.
-Bob Taylor: I updated his Microsoft office software from 2000 to office 2003 and updated his adobe software to 6.0.
-Lisa Goggin: She had a problem with her laptop after installing Norton anti-virus software. This was a faulty installation with Norton anti-virus that corrupted the operating system. I was able to stop the Norton services and uninstall the previous installation and get this laptop backup and running.
-Mike Smith: He was having many problems with his e-mail software, mapped drives timing out and his spell checker not working (office xp) I have corrected all these issues for now. This took a great deal of time.
-Cleveland Mak: Spent many hours working on Cleveland's workstation (George Stokes request) trying to get active X to run; this is a service that interacts with Microsoft's jet database and access database. This was taking me way to long! I ended up reloading his workstation. The active X issue is resolve and Cleveland is back up and running.
-Worked on updating the NTSRV's with updated firewall software but came across some issues with IIS and other services that I could not get to run. I have more testing to do before I update the NTSRV's.
-Worked on a network connection for Riccardo's group over in synchrotron. They are back up and running.
-Other misc. onsite/phone user support.

(Veronica)
- LSC website: Posting updates to the upcoming meeting is they arrive. Posted updates of other LSC documents per Peter Saulson's request.
- CaJAGWR website: Videotaped and compressed the last talk by Michele Vallisneri. The stream is ready for posting. Provided some user/logistics support.
- LIGO website: Working with George Stokes on the DCC upgrade documentation. Usual website upkeep. Last-minute updates to the PAC meeting website.
- Project Science website: Built and installed a database for registration for the upcoming workshop. Testing the application in preparation to going public. Updates to the static workshop pages.

(Lisa)
- Continued monitoring of email.
- Updated the firmware and reprogrammed the wireless access points.
- Did monthly backups.

Mail Stats 5/27 - 6/2/04
Messages Accepted:      13176
Spam Rejected:          6222
Viruses Rejected:       1746
False Positives:            9
Total Mail Thru:        21144

(Larry)
-Reworked network documentation needed by the ESnet people.
-Handled a couple of purchase requests. Still a few more things to order.
-Spent a deal of time cleaning up home directory disks. Working on a list of accounts to be approved for deletion.
-Worked a couple of printer issues. Had a missing driver from the rebuild and shut off the banner page printing for a couple of the print
locations.
-Number of user account and network changes.

Advanced LIGO and Supporting R&D (Shoemaker)

Suspension

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

AdLIGO Suspensions
MC to LASTI
The two transit cases that hold the mode cleaner triple pendulum suspension and assorted fixturing and equipment were picked up by the freight company this afternoon. They are due at MIT June 9th. Continue to coordinate with folks on tasks associated with the June MC installation in a HAM chamber. Laurent updated the assembly specification. I've been working with Laurent and Dave Ottaway this week to make sure the transition is smooth. Work is on schedule.

Bob's bake oven schedule is working. We are on schedule to deliver associated hardware for this work to LASTI.

Still creating the installation document. Preparing other documentation for the transfer of the MC to LASTI.

Starting work on Primavera updates.

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

Advanced LIGO SUS

Worked with Laurent on the assembly of the LASTI MC and revision of assembly specifications.

From: "Mark Barton" <mbarton@ligo.caltech.edu>

This week I created a model of a double pendulum suspension that might be used to support the output mode cleaner cavity. This is preliminary work in case current noise-hunting efforts end up concluding that it needs better seismic isolation.

Also this week I received and tested some very useful contributions to my Mathematica pendulum modeling toolkit from Ben Lee, a grad student with David at UWA. While I was at Gingin, I showed him how to use the toolkit to model a suspension he was working on. He found a few minor errors in the wire bending code, and added new code for wire torsion

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