Weekly Report for Week Ending June 13, 2002

The LIGO Executive Committee Agenda for Monday  June 17, 2002 will be:

 (Meeting time: 10:30 am Pacific Time)

Open meeting 10:30 - 11:30

1. Announcements
2. LSC Issues (Weiss)
3. Comments on Weekly Report
4. WBS 1 LIGO I Construction (Lindquist)
• Field Change Orders/Contingency Liens/Change Requests
5. WBS 2 LIGO Lab Operations
• Administration (Lindquist)
• Sites (Raab, Coles, Shoemaker, Sanders)
• Detector (Whitcomb, Coyne)
• Campus Research Facilities (Weinstein (40 Meter), Libbrecht (TNI), Zucker(LASTI))
• Data Analysis and Computing (Lazzarini)
6. WBS 3 and 4  Advanced R&D and LIGO II (Sanders)

Special Items:  S1 planning status report from Fred and Mark

Special Announcements:

Weekly Report Highlights
 

LSC Issues (Weiss)

no report

LIGO I Construction/LIGO Laboratory Administration (Lindquist)

LIGO Operations--Administration

There was no site teleconference held on Thursday, June 13, 2002.

The list of current actions revised to reflect the status of open actions assigned through June 06, 2001 may be found at ACTION LIST.

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

• No report (GSA visit).

>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

• No report (vacation).

ACTIVITY

• Processed and distributed 1 DCN
• Electronic document activity picked up for this period.
• Progress continues on conversion of old charge account files to electronic form.
• Supported audit with document searches.

 

06/13/02	Packages	Faxes
In	40	44
Out	9	30

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

Press here for ACCOUNTS PAYABLE HISTORY DATA .

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

• Processed change order 3 to the JPL workorder for John Klohoker, change order 14 to MCI which added funds of $5k, change order #4 to Air Liquide which added $44k, change order #6 to Goodrich which added $12,100.00, and change order #23 to Hytec.  Closed out the Airgas blanket which has reverted back to the name of Air Products.  Walked over change order #17 for MIT which currently is in the approval cycle going to Sharon Patterson, and which is also being requested by BSB as it is included in one of the audits currently taking place.
• Researched and gathered salary information for all the LIGO labor subcontracts and prepared a spreadsheet with this data and submitted it to Cindy Akutagawa, as requested.
• Working with Norman Gordon, tax person at Caltech, on the continuing tax issue with Superior Jig.  Faxed additional information to the California state auditor, Hatem, to indicate that LIGO is tax exempt on orders intended for the sites.  The State auditor is hesitant to accept this information as it shipped to Caltech.  I have made copies of the Superior Jig file of the purchase orders, change orders, requisitions, invoices, quotations, and correspondence between Sponsored Research and the sponsoring agency and submitted it to Norman Gordon who is coordinating a conference call today with the California state auditor, and the Caltech auditors to resolve this issue fairly and to our satisfaction.

• Worked on providing information required for the DCAA audit.
• Met with Garilynn Billingsley and Gary Sanders regarding Core Optics accounts and provided additional information regarding these accounts.
• Provided information on costs paid in FY99, FY2000, FP2001 and FY2002 to date for 40Meter Operations.
• Provided Project Accounting with a spreadsheet for allocation of the remaining $14 million awarded for FY2002 Operations.
• Submitted Fabricated Equipment Request and PTA Set-Up for the Gingin Experiment.

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

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

• REO: CO No. 13, for rework and coating of four TNI optics, was released to Purchasing.
• Goodrich: CO No.6, for additional polishing of sapphire optics, was released to Purchasing.

• No report (vacation).

SUPPORT (Baldon, Torres, Lloyd, Tischler)

• Processed the paper work for five (5) new/revised trip and there are twelve (12) trips in various stages of completion before ticketing can be done and paper work completed.  Worked on a couple of upcoming relocation trips and forwarded household moving needs to Ed Chargois for his assistance.  Also worked on a number of long-term visits which will require long-term housing, etc.
• Completed ten (10) Expense Reports and there are zero (0) reports yet to be done.  Contacted a couple of travelers who have outstanding Expense Reports due for previous trips.  Asked for their cooperation in sending me their receipts so that I could close the trip(s) in question.
• Reconciled twenty-one (21) P-Card items this week which required phone calls to hotels to track down which traveler incurred which charge and pulling each traveler's file to assure that charges are correct for each airline fee.  Assisted a couple of P-Card holders who were/are out of town/country with their reconciling and/or expense reporting.
• Worked on the preparation and distribution of the Travel/Vacation Itinerary for June 10, 2002.  Performed normal recording and filing associated with Travel and Reimbursement.
• Continue to do MIT's travel to the sites for installation activities and also to assist them wherever possible.

• Processed the usual incoming invoices for payment. Tracked and followed up on invoice problems, and reviewed and recorded payments processed by Esther during the week of June 3. For the total number of incoming invoices received for this period see "Cost Schedule Control Systems" report by Esther Cunningham.
• Processed the usual requisitions and change orders on-line.
• Continue to monitor contract and blanket order encumbrance and notify task managers when supplements are needed.
• Continued working on  update of PO Log Books.
• Jim continues with data entry in the LIGO database and helping out in the DCC.

• No report.

• SURF/LIGO Orientation preparation/final details
• Public Outreach Folder Design, review of images to use.  Received off-site photos to consider.

Advanced LIGO (Frey)

Progress Period from 06.07 to 06.13

Accomplishments:

• Weekly Advanced LIGO Project Controls meeting was not held this week.
• On Tuesday the 11th I met with Gary and Dennis to Discuss Adv. LIGO schedule issues and change to the baseline planning.
• Friday the 7th I attended a meeting at the request of Dennis Coyne to discuss with University at Glasgow (UG), their cost proposal to PPark, regarding their fiscal involvement with Adv. LIGO.
• This entire week has been dominated with the preparation of detailed cost data for UG's cost proposal.
• On Tuesday I met with Janeen, Dennis, and Helena to discuss spare allocation and comments to cost data.
• Advanced LIGO MRE Proposal (Highest Priority)
• Per direction of Gary, Dennis, David, and Phil, I am updating the presentation from November with most current data for meeting to be scheduled in June.
• Continuing the development of the Cost Estimate.
• The following is a summary of status by sub system:
• COC - Work on action items per second review continues.  Next meeting date has not been scheduled.
• PSL - Next meeting scheduled for Friday the 14th at 8am.  Next action is to begin separation of LZH scope from LIGO Lab.
• AOS - Work on action items continues.  Next meeting date has not been scheduled.
• IO -  Work on action items continues.  Next meeting date has not been scheduled.
• SUS - Working with SUS group to incorporate current comments.  Received progress data for progress through 5.31.02 and began processing.  Worked heavily with Janeen on the UG cost data and made significant progress as a result.
• SEI - Work on action items continues.  Next meeting date has not been scheduled.
• ISC - Continue to work preparing draft data for Mike to review / fine tune during trip to MIT.  Received revised travel confirmations from Irene.
• LDAS - No data / feedback from Albert to date.
• All other subsystems have yet to be scheduled for their first review.  These dates are pending per direction from Gary Sanders and Dennis Coyne.
• Continue to update the TNI Schedule and incorporate any changes.
• Received revised planning data and will begin work next week.
• Continue to update the LASTI Schedule and incorporate any changes.
• Nothing new to report.
• Project Plan for the 40-Meter Lab Upgrade continues.
• Nothing new to report.
• Cost Book Tool.
• ROSTER DATABASE:
• Continue work on my action items providing BK with needed data.
• COST BOOK DATABASE:
• Added reporting capability so that we can run reports specific to UG's scope and contribution.
• Gang of 5+:
• Have not received any comments from Dot or Gina.
• DCAA - Work continues on the incurred cost audit.
• Nothing new to report  (All Quiet on the Western Front).
• 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

• Next weekly Advanced LIGO Project Controls meeting is to be scheduled for late June.  Subject:  MRE Cost and Proposal Development.
• Continue the preparation of detailed cost data for UG's cost proposal preparation.
• Meeting scheduled for Friday at 11am to teleconference with UG regarding cost data.
• Will incorporate any and all comments.
• Advanced LIGO MRE Proposal (Highest Priority Task)
• Highest priority is the development of the Cost Estimate.
• Will continue to pursue all other sub system schedules.
• PSL - Will be meeting with Peter King to look through estimate to separate LIGO Lab scope from LZH scope. (Friday at 8am)
• AOS - Continue inputting changes to and prepare for next meeting TBD.
• IO - Continue inputting changes to and prepare for next meeting TBD.
• SUS - Continue inputting changes to and prepare for next meeting TBD.
• Will update the plan with progress through 5.31.
• Add cost data changes received.
• SEI - Continue inputting changes and prepare for next meeting TBD.
• COC - Work on action items by Garilynn continues.  Anticipate schedule changes prior to next meeting TBD.
• ISC - Travel planned to MIT for the week of July 15th.  Will continue work preparing draft data.
• LDAS - Will work with Albert to develop details.
• Will issue updated meeting minutes for every subsystem as action items from most recent review are completed.
• Will Continue to update the TNI Schedule and incorporate any changes.
• Will revise work plan with new data.
• Will update the plan with progress as of 06.14.02 and  post to site by the 18th.
• Will Continue to update the LASTI Schedule and incorporate any changes.
• Will update the plan with progress as of 06.14.02 and  post to site by the 18th.
• Will continue updating the 40 meter schedule and incorporate any changes.
• Will update the plan with progress as of 06.14.02 and  post to site by the 18th.
• Roster Database
• Will continue to work with BK and executing action items.
Cost Book Tool development continues.  (Highest Priority Task)
• Mapping and formatting of OPS cost data for input will now continue with co-operative agreement approved.
• Will continue to work with BK executing action items.
• Gang of 5+
• Will continue to work on procurement documents.
• Will continue to provide support to PL for DCAA audit(s).
• Will continue the development of the Advanced LIGO Project Web Site.
• Will continue the development of the Advanced LIGO Project Controls Guide Book.

• We are assembling (slowly) a draft of the quarterly progress report for the end of May.
• Preparing responses to IG audit requests.

The following additional change requests have been submitted:
 

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

• No report.

Quality/Safety (Tyler)

• Nothing significant to report this week.

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

Summary of Commissioning Activities at LIGO Hanford Observatory (compiled by M. Landry)
--------------------------------------------------------------------
E8 concluded successfully on Monday night.  The 2k ifo remained in fully-recycled, common
mode lock for most of the run.  The 4k however was not ready, thus regular commissioning
efforts continued.  Attendance during E8 was excellent, including ten DMT authors, plus
sundry testers and operators, all of whom exercised 18 DMT monitors and elogged
observations and suggestions.  Keith Riles led an E8/DMT debriefing, summarized at
http://blue.ligo-wa.caltech.edu/engrun/E8/info/minutes2_e8.txt.  A DMT summary page is
being devised for S1, to give a rapid overview of the current state of ifo's.

State vectors for both ifo's are now available, comprising of 16 bit words, each bit
assigned to a major component of an ifo.  One bit is a "Go/No Go" bit, set by the operator.
When all bits are set, the ifo is in "physics mode".

Three SURF students have arrived at LHO, including Heather Partner (tidal actuation),
Aaron Virshup (DMT transient studies), and Brian Cameron (continuous wave sources).

4K IFO Investigations
---------------------

LSC/ASC/DSC reboots were plentiful (on both 2k and 4k control systems), in part to introduce
new code, and in part to rectify cpu crashes/seizures.  Hardware fixes included
coil bias module and coil driver circuits on the RM and ETMY, respectively.  MMT2 continues
to produce surprising alignment drifts.  Test point dropouts noted last week remain in
the small optics.

Optical lever pitch/yaw excitation points have been added to the large optics (except MMT3)
in order to facilitate testing of the so-called 'super optical lever' (SOL) and elliptic
low pass servo filters.  Corey noted cleanroom curtains in contact with optical lever piers
and loose mounting brackets for the optic lever laser were adding noise to the op lev
error signals.

Nergis and Peter have been working along the chain of subsystems (psl, pmc, iss, fss, mc),
making modifications to servo gains and eliminating oscillations along the way. Details
are available in a series of Tuesday elogs, starting with
http://blue.ligo-wa.caltech.edu/ilog/pub/ilog.cgi?group=detector&date_to_view=06/12/2002&anchor_to_scroll_to=2002:06:12:14:39:01-peterF.  Efforts to resume full locking continue.
 

2K IFO Investigations
---------------------

New ASC code is in use on the 2k control system.  However WFS1 was not employed during E8 as
servo filters and gain issues had to be stabilized.  The LSC FE cpu was unstable prior
to E8 and may have been heating, as stability was achieved once the racks were opened.

Daniel added a low frequency boost to the MC_L path of the common mode board, significantly
reducing REFL_I and ameliorating the ifo transition into common mode.  Later in the week
he and Peter showed that DAC output noise is not our current limiting source.

Optical lever servo fast channels have been added to the 2k.  The oplev servo will be
implemented on the ETMs, with the possibility of WFS feedback moving to damp the ITMs.

The 59Hz harmonic forest in AS_Q has been shown to be produced by fans in the ETM
controllers.

---------------
Facilities
---------------

The sheet rock is up in the office area and the contractor started on
taping the joints. The auditorium clouds are nearly finished, insulation
and sheet rock work is on going in that area. In the lab area mechanical
and electrical installations on going. Concrete work outside the building
is also on going.

----------------------
LASER SAFETY
----------------------

        Last, week we commissioned the new laser safety system here at LHO. The
system includes a new LHO site laser safety document (LIGO-M020131-01-W) as
well as the hardware and access cards. This document describes how we
currently are operating at the site as well as the minimal requirements for
working at the site. Also a new Standard Operating Procedure for the two
Interferometers is in effect (LIGO M020130-00-W). This document replaces
the 10W SOP. This document includes the full IFOs in their present
configuration, including the ISC/IOT tables, PSL tables, Transmission
Monitors and so on. If you are planning a visiting to the site or have a
need to work unescorted in the laser hazard areas, please review these
documents. They are available from the DCC or I can e mail you an
attachment. The new system will take some getting used and is not without
some minor glitches that are being sorted out.
        As a reminder also. If you are coming to the sites, and plan to work
around class IIIb and class IV lasers, you'll need to have completed a
"baseline" eye exam prior to your visit LIGO-M960001-B-P "LIGO Laser Safety
Program.
 
 

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

Detector: The new LSC code by Rolf was installed this week. It contains an added feature which makes it possible to switch in filters gently by phasing the output at a zero crossing of the control signal. We also installed the new two stage dewhitening filters We had hoped that these added features would improve the common mode performance, but there is little apparent difference relative to the previous noise spectrum.

It is now clear why opening and closing doors on relay rack 1x9 causes the 60 Hz and multiple to vary in the demodulated signals. It is indeed due to RF which has 60 Hz sidebands. The clock signal at 4.1943MHz has 60 Hz sidebands that are about -40db relative to the fundamental carrier. The RF at 16.777, 17.825 and 18.874 also has 60 Hz sidebands but -50db relative to the carrier. The RF lines with sidebands were discovered with a spectrum analyser using a 30 cm dipole antenna placed vertically in the back of the rack. A more efficient way to search for the RF with 60 Hz sidebands is with a radio. When this was done, and to our surprise, the 60Hz and multiples envelope on many small amplitude RF lines between 4 to 10 MHz were found to have much larger 60Hz amplitude modulation than the largest carriers. The space inside the relay rack is virtually singing with RF having 60 Hz sidebands. There is no point in chasing ground loops until we understand the source of this RF. (Rai Weiss)

CDS: Ordered material and began installation of power and illumination of office area in new building. Received quote and schedule for installation of telephone lines in the new building. Completed termination of the replacement fiber on the south arm. Completed termination of the new LDAS/GC and CDS fibers that run from mass storage to the communication room in the new building. Repaired level control system at the west end station cyropump. Installed additional power for LDAS in the mass storage room.

Seismic Mitigation: Machined Springs: The machined spring first article has been heat treated and is currently being plated at Simmons Plating (New Orleans). Per my last conversation with Simmons, the spring will be completed by Monday and will be hand delivered to Power Dynamics (Stennis Space Center) for the joining process. We should have the spring by Tuesday and be ready to test the spring Wednesday. Spring Testing Preliminary efforts have been made to coordinate the first article test with LSU's Civil Engineering Materials lab. Joe Giaime, Carol Jacobs (LSU Civil Engineering instructor), and I met to discuss the apparatus, the resolution of the Tensile Tester, and the setup. We now have reasonable expectations of what data the tester can produce and how we can get the data that we feel important. LIGO Spring Tester The spring tester that is to be permanently housed at LIGO should be ready for noon tomorrow (6/14/02). I have been asked to go there to test the MEPI springs just in case there are any software changes. The unit would then be shipped to LIGO on Monday. HEPI Actuator: -  I have spent most of my time fine-tuning the actuator plate, actuator manifold and the associated pin valves. We do plan to further investigate the assembly to assure ourselves that there are no interferences and that the components fit together correctly at first installation. Spring Analysis - No major advances have been made on the spring analysis since Sunday (due to my involvement with the actuator) It is my intention to finish that analysis this Sunday and present those results by next week. (Marcel Hammond)

LDAS:
Installed GigE cards into metaserver, beowulf, datacon.
Together with Al Wilson configured the 48 nodes. One of them appears to be damaged. ASA should ship the replacement tomorrow. One power 20A power strip is not working. Asked Bill Tyler to replace it.
Ordering two more UPSes and one more rack.
Running the burn test on the nodes.
Additional power has been added to the mass storage room to support the new nodes.
Shannon Roddy layed out the cabling for the new cluster in cable trays so that it can be easily maintained.
 
 

Detector/Technical Support (Whitcomb, Coyne)

no report

40 Meter Interferometer (Weinstein)

• Suspended mass mode cleaner (Ugolini, Miyakawa, Vass, Abbott, Taylor):
• The MC suspended optics are all aligned, and in-vacuum mirrors to send the reflected and transmitted beams out to the sensing tables are in place.
• All beam tubes and table enclosures have arrived from CES; we can now assemble them, and then Osamu can finish assembly of the mode cleaner reflected (IMCR) and mode cleaner transmitted (IMCT) optical sensing trains. This includes the mode cleaner LSC RFPD and the RFAM PD, as well as QPDs in both optical trains. Expect it to be complete by next week. The assembly of the electrooptic shutter awaits Mike Smith's return next week.
• Bob and Ben have completed all the front panel wiring and cabling for the MC length control system. The power will be turned on soon.
• And we need the EPICS controls of the length control system; this requires some IOC software to be installed. Jay, Ben, and Dennis will hopefully pull it together next week.
• Ben has tester boards to test all the EPICS controls, and will test out the system next week.
• We'll first try to acquire lock with an input beam of the wrong polarization, as this will reduce the finesse of the MC cavity by a factor ~ 10.
• Implementation of the alignment control system (WFSs, digital feedback control, PZT steering mirrors) will hopefully come together in the next month. The remaining hardware (WF sensors, WFS whitening board, PZT driver, and a fast controls VME crate) is all in the works. This also requires digital ASC control software for the MC, which doesn't exist at the sites; work is beginning on this at Wilson House, with low priority.
• At the moment, our north Watec camera can only see MC1. A second mirror, and mount, has been received and is being baked out this week.
• Suspension Controllers (B. Abbott, Heefner, Taylor, Ugolini, Miyakawa):
• The digital suspension controller system is working well on all three mode cleaner suspended optics. The controllers are left on (damping) 24x7, routinely.
• After a reboot of the suspension controller electronics, AutoBURT restore does not get all the switches right. We're trying to figure out the correct incantation.
• Dennis wrote up the suspension controller reboot procedures, and they have been posted on the web and at appropriate places in the lab.
• PSL (Ugolini, Abbott, Miyakawa, Vass):
• The PSL has been behaving stably for the last week.
• Osamu has again re-aligned the two EOM's in the IOO optical train (fMC = 29.486 MHz and f1 = 33.207 MHz) and measured > 94% transmission through both EOMs, as expected.
• Osamu is beginning to beam-scan the entire IOO train to verify that the beam size, and mode-matching into the MC, is per design.
• Computing:
• Lisa Bogue has installed an external hard drive and tape backup for our disk server op140m, and is writing out the code to backup /cvs/cds and RAID trend frames monthly.
• AutoBURT.req files exist for many, but not all, systems. We are reviewing what we need. The autoBURT system works, but not reliably: sometimes, snapshots just aren't taken, we don't know why.
• Dennis has re-organized and completely documented our computer networking.
• One long and suspicious ethernet cable was replaced by Jay.
• We continue to see network problems, which cause EPICS communication from scipes to hang (requiring reboot), and (maybe unrelated) cause EPICS screens to hang and connections to be lost. Lisa is diagnosing the latter problem.
• STACIS seismic isolation system (Ugolini): Still waiting for the putty pads for STACIS, tentatively schedule reinstallation of our two repaired STACIS isolators for Friday.
• Facilities and vacuum envelope (Vass, Jones):
• There was a campus-wide power glitch on Wednesday, but it did not seem to have any effect on anything at the 40m lab.
• As noted above, Larry has received from CES, and delivered to the 40m: camera housing parts; SP&MC table cover parts; AP table cover reworked wall; long, PSL-SP&MC 8" tube; AP-PSL 10" tube; OOC-AP 8" tubes; handles for all cover lids to date; mirror housing and rod for MC wide view. This last item is now being baked.
• Larry is ready to submit requests for all 5 remaining table covers to CES, when we've checked out what we've got.
• We received a new connector to repair the pneumatic nitrogen leak in our V1 valve. Steve is checking the V1 seal by pumping on that manifold. If all checks out, Steve will finally replace our two turbopumps with new pumps with dry scroll forepumps. Then we'll be able to pump down again.
• We plan to pump down by the end of next week or the beginning of the following week. We hope to have the MC under length control before then.
• Steve installed a portable AC unit, donated by Larry Wallace, in our control room. It seems to help cool the room down a decent amount; let's see how it goes during the summer, with a full house of students.
• South Annex Bake Ovens (Taylor, Cardenas):
• The new in-vacuum mirror and mirror mount for our Watec camera view of MC3 is being baked in small oven #B.
• All the parts for the 2nd new large bake oven (oven #F) are in, and it is ready for completion.

Thermal Noise Interferometer (Libbrecht)

The final week of classes for the year made for a slow week at the TNI.  Since our last report, Kyle has been working with Jay Heefner to design and build our new, low-noise servo electronics. The new filters have been designed and modeled, including their noise performance, and the circuit has been laid out. We expect to have the filter completed and tested by the end of the week.

LASTI (Zucker)

no report

Data Analysis and Computing (Lazzarini)

Simulation and Modeling (Bhawal)
SimLIGO - realistic LIGO simulation package
-----------------
In the weekly e2e meeting, Matt talked about details of the new SimLIGO model.

SimLIGO is the second generation LIGO simulation package. Han2k package was
developed and used for the lock acquisition design, based on a scalar field
calculation with minimal ISC content. SimLIGO is designed to be used for the
noise simulation, as well as the lock stability study, of the as-built LIGO.
In order to achieve that, it has the following features:

  (1) realistic correlation of seismic motions and 6x6 stack transfer function
  (2) three dimensional mirrors, actuated by 4 OSEMs, with noisy coil drivers,
      enabling the simulation of the coupling between length and alignment DOF.
  (3) thermal noise (ad-hoc model based on Sam Finn's calculation):
      pendulum, wire and internal
  (4) digitized ISC and digital suspension controler
  (5) realistic servo
  (5-1) common mode servo implemented
  (5-2) ADC-DAC running at 16k and 2k, with whitening-dewhitening filer
  (5-3) measured electronic noises
  (6) shot noises
  (7) ASC based on optical lever (on going) and WFS (waiting for the LIGO design)

  The simulation of the PSL/IOO is a simple model based on the designed response.
  In order to simulate PSL/IOO, the control bandwidth becomes too wide, and the
  simulation takes too long. The design decision was made to use a simple model
  for the major simulation, and a more sophisticated model of IOO is used to study
  specific problems of the mode cleaner. The building tool is ready and can be
  easily expanded. The issue is the simulation time.

  Most of the major noise sources can be simulated now.
  The running conditions, including the noise levels and IFO parameters,
  can be easily tuned by editing a few input database files.

  Right now, the speed of the simulation is around 600 times slower (i.e., to
  simulate 1 second of reality, it takes 600 seconds) for the basic linear noise,
  while it will be 6000 times slower to simulate with alignment ODF activated.
  Speed improvements (code improvements, compilers, faster machines, etc) are now
  under investigation.

Code development and maintenance
---------------------------------
(Hiro)
  Keep working on the improvements of modeler for the new LIGO simulation package.
  One major issue in this week is the psd module, which is modified to make sure it
  works correctly when it is plugged in the digital circuit. The accuracy of the
  module is improved even when the spectrum is noisy. Combination of macros (time
  independent variable) and parameters (possibly time dependent variable) is under
  planning. This makes automation of the simulation involving various stages easier
  (e.g.,un-locked state -> locked state -> switch control to  low noise).

(Biplab) Fixed the problem of Recycling summation cavity that was giving inaccurate
  results when Matt changed the laser frequency as a part of the common mode servo.
  After that tested effects of laser frequency changes in 2-mir Cavity, 3-mirror cavity
  and Michelson recycling cavity.

(Matt and Biplab) While testing 3-mirror cavity, a problem was encountered in
  simulation runs of the primitive set-up of such a cavity. Several changes have been
  made in some functions of the field class and propagator to fix this problem.

(Ed Maros) Started to work with Luca on tar ball build issues.

Alfi
-----
(Melody)
  - Continuing on implementation of the 'Find' feature for alfi5.

(Bruce)
  - alfi5 window resizing issue (visible area and the entire content pane)
  is worked out.
  - Junction handling is being improved by taking into account the
  feedback.

LIGO Data Analysis System

Software Systems (Blackburn)
The reliability of LDAS to process jobs has greatly been improved over the
course of the last week. We have removed all but one failure mode from our
test suite which involves running a combination of 4 dataPipeline jobs and
4 getMetaData jobs in a loop at a pace of about 7000 jobs per night. This
remaining failure mode is due to a socket binding problem in the data
conditioning API and occurs in about 0.2% of the jobs and only in those
jobs that work with less than 2 seconds of data.

The memory leak in the dataConditionAPI remains at about 20KB per job. Even
though a team of 3 people have been chasing it for a week. Looks like we
will have to live with it in the Science Run. Our projections are that it
will cause the managerAPI to restart the dataConditionAPI once near the
end of the run resulting in an average of 5 jobs lost per restart.

We have begun testing the pre-release of LDAS on the systems at the sites
(this excludes MIT which would prefer to stay with the old system for now).
These systems have new Beowulf Clusters and we are still sorting out the
configurations (which change daily as we find bad nodes). So far, during
the periods for which we have had stable hardware to test against LDAS
has run well. The overhead of starting MPI jobs on these larger clusters
is a bit disappointing, though not a show-stopper. We will make an attempt
to find a way to improve this before the final release.

Testing of the generation of RDS frames using the previous (0.2.0) release
of LDAS during the E8 Run was very disappointing. This was because of a
FILO issue in the 0.2.0 release of LDAS which was known and at the top of
our list of changes for the 0.3.0 release (the TCL Channel Interface). A
couple of jobs have been run to test the generation of RDS frames on the
pre-release of LDAS which did not suffer from the FILO problem but did
indicate that we are not able to keep up with the data. It is taking about
5 to 10 percent longer to generate RDS frames the the original frame's
length. One factor in this is that the amount of data int the RDS frames
continues to grow. We were originally told that 121 channels would be in
the RDS frames and we found that the testing was done with 152 channels.
This more than accounts for the 5 to 10 percent fall off.

The web site for applying for new user accounts and passwords for using
LDAS is nearly complete. We need to test it extensively before going live
with the system on Monday.

Several new graphing packages are now working in the controlMonitorAPI. It
is now possible to graphically track the node utilization over a user
specified time range. This proved very useful for tracking down a bug in
the mpiAPI which was reporting resources not available when we could clearly
track that there were plenty of nodes unused in the system.

Hardware Systems (Anderson)

Caltech
-------
(Dan Kozak)

* Assisted James Patton with integration of Sun T3s into HPSS
  configuration (configured T3s and fibre channel switches and pulled
  fibre between hosts, switches and tape drives).

* Assisted LLO with installation of SAM-QFS 3.5.0-57.

* Installed SAM-QFS 3.5.0-57 on Caltech machines (the gateway, dataserver
  and metaserver machines in ldas-dev, ldas-test, ldas-cit).

* Began testing multiple interswitch links on the ldas-archive machine.
 

(Al Wilson)

* Setting up new Beowulf nodes at LLO and LHO.
 

(Stuart Anderson)

* Remote support for Beowulf and GigE upgrade at LLO and LHO.

* Obtained initial standard discount pricing information to complete
  the Storage Area Network (SAN) at LHO and LLO.

* Re-enabled the OC-12 connection from LIGO to the high performance network
  at CACR and setup static route to allow 20+MB/s transfers from Caltech
  to UWM.
 
 

MIT
---
(Keith Bayer)

* Had sun replace T3 disk.

* Swapped Foundry switches.

* Installed new version of QFS on E450 / SF880.

* Fixed /dso-test mount points on cluster nodes and beowulf.

* Getting quotes for PC Raid NAS.

* Redistributed ldas power load onto 4 separate circuits.

* Received extra rack shelving from Caltech.

Livingston
----------
(Igor Yakushin)

* Installed GigE cards into metaserver, beowulf, datacon.

* Together with Al Wilson configured the 48 nodes. One of them appears
  to be damaged. ASA should ship the replacement tomorrow. One power 20A
  power strip is not working. Asked Bill Tyler to replace it. Ordering two
  more UPSes and one more rack.

* Running the burn test on the nodes.

* Figuring out how much more power we need to run LDAS safely at LLO: we
  already twice overloaded the circuits here.

Data Analysis Activities (Lazzarini)
Shawhan (from the week of 6 June) Discussed hierarchical search algorithms with Anand Sengupta, who arrived
this week for a three-month visit.

Wrote a handbook about hardware signal injection, and worked on plans for
a campaign of injecting a series of many simulated signals shortly before
the S1 run.

Mendell: For The Weekly Report: June 6, 2002; Data Analysis Update:

Continued work on the knownpulsardemod DSO.  Updated the calls to the
barycentering and amplitude demodulation LAL functions and identified
several more issues with the LALDemod code that I am sorting out with
the AEI group.

General Computing (Wallace)
MIT:
(Keith)
-Working on NIS+ setup
-Setup forwarding web server (ligo -> emvogil-3)
-More Solaris system upgrades with MU7
-Wireless troubleshooting
-Ordered AIT3 tape drive

Livingston:
No report received

Hanford:
(Christine)
- Continued cleaning personal files and software off old PCs.
- Setup one of the old PCs as a "new" PC for a staff member who's old PC
was older than the old PCs.
- Working on a very baffling e-mail problem on a Windows 2000 PC.
- Purchased more 8 mm tapes, cat5 cables and wireless cards.
- Set up new modem accounts for SURF students.  Helped the SURF students
with various e-mail and account setup.
- Various other user support including printer repairs, help setting up
a new laptop, and troubleshooting a log-out problem on Windows 2000.

(Larry)
- Worked on VRVS setup with Christine and Mike. The setup is pretty clean.
However, the resolution needs to improve and the setup for VNC also needs
to be worked on.
- Review computer security audit materials with Christine. This is in
preparation for a internal security audit of equipment at the Observatory
that will take place this year.
- Working with Albert, Christine and others on the updrade to the WAN.

CIT:
(Lisa)
- Caltech had a power surge that brought down some of the machines. Mike and I
did a walk through to make sure everything came back up again.  All of the
servers in the server room are on UPS units and were unaffected.
- Installed a new hard disk in propus.  Sun is no longer honoring the 5 year
warranties on hard disks.
- Installed an external hard disk and tape drive for use as backup in the
40meter martian network.  I still need to put backup scripts in place for that.
- Installed and began evaluating a demo of sarcheck.  It is commercial software
that takes the output of sar, analyzes it and makes performance recommendations
on a system.
- Spent time on the luna rebuild. The final installation will take place
when Rolf OK's it.

(Veronica)
- LIGO website: posted several updates to Postodoctoral/Fellowships, MOUs,
Employment, Internal Bulletin Board. Reworked several pdfs of the Elba
Conference talks: to reduce file size and to shorten the download time, I
retyped text-only pages in the scanned files; in some cases, it reduces
the file size in half. Dealt with a DCC search engine unable to locate an
existing file. Working on the Travel Policy webpage and on LIGO Press Kit
online version. Started working on a webpage for the upcoming LSC August
meeting.
- GNATS database: need to edit the GDS part of it; need the input from
Szabi and others about what needs to be done. Getting familiar with the
how-to in the meantime.
- LDAS websites: there are several updates waiting to be made. I started
to edit images offline; will post them shortly.
- CaJAGWR website: added another member information.

(Mike)
-Loaded a Laptop with OS and General Computing software.
-Tried working the PHERKAB server but having problems bringing the new
server up due to a caching of old server that looks like is being cache at
the router.
As far as database and webserver goes this seems to be running like it should.
We will run some more tests on Friday to see if we can clear up the caching
problem.
- A PC computer was having problems with Anti Virus Software; I had to
reinstall Anti Virus software and FrameMaker 5.5 that seem to have got
corrupted possibly from an old virus.
-Problems with the 5000 printer, it seems like the Duplexer has went
out. I tried cleaning the rollers and other components but had no luck.
I ended up calling HPC to have them come out and check this out, and it
turns out that the duplexer is out and needs to be replaced; we have this
on order.
-Cleaned up and ran Norton Utilities on the Bridge 3rd floor computer that is
used for scanning and writing CD's.
-Worked on getting the required information from ANSYS people to upgrade
server and workstations.
-Received the new licensing from Ansys and have upgraded the Flex LM server.
-Upgraded multiple users with the new Ansys 6.1 software; everything seems
to be working okay.
-Installed Ansys on my win98 computer that is in my office and
notice that Ansys is no longer supporting their software on win98 Operating
Systems. This software has not been tested on win98 and should only be run
at a minimum of NT4.0 with service pack 5 installed.
A brief reminder at the end of this year Microsoft is no longer supporting
NT4.0. We could be looking into some problems with software drivers in
regards to upgrading our current engineering packages in the near future,
due to the lack of support from Microsoft. This well eventually flow down
to software manufacturers that well force us to upgrade all win98 Operating
systems to Win 2000 pro. From here on out I will try not to reload
computers with Win98 only with Win 2000, but I might run into some hardware
compatibility problems. This might include some of our current computers to
get upgraded with more memory and possible motherboards/cpu's etc.

(Larry)
-Resolved a few procurement issues. Working on a number of supply procurements.
Mostly cables and memory cards. Reconciling a number of orders placed on P-card.
Updating the licenses for Exceed and the maintenance contract on the router.
-Added more domains to the blocked tables and removed a couple that we need. We
do have a way to block an entire domain and let specific users through and that
has helped in some cases.
-Reviewing documentation and present h/w setups. If there are not too many
problems this next week, the group will have a test network setup to check out
some of the upgrade equipment being installed.
-After the power glitch Caltech had this week, it looks like the new edge
switches are too sensitive and will need to be put on a UPS.
-Still checking on security equipment for the remote control rooms.
-Worked a few printing issues and reviewing the warranty dates. It appears that
all but a couple of the printers are now no longer covered. The extended
warranty period has expired on most of them.
-ToUcam is no longer being manufactured and we are looking for a WEBcam of the
same resolution, performance and price. So far no luck. The suggested
replacement webcams that have been tested did not perform well.

(Bruce Sears)
ILOG maintenance:                (1.0 day)
    - New user administration and tracking of problems accessing
          the various log installations for maintenance.

Lazzarini:
Lazzarini, McCarthy, Patton, Raab, and Wallace met with PNNL and NoaNet representatives  on 7 June in order to discuss upgrade options and paths for the LIGO WAN at LHO. The meeting identified the technical, programmatic, and fiscal issues that need to be surmounted before the upgrade can happen. A number of action items were identified and assigned. The plan is to implement a 2-stage (near-term, long-term) upgrade that can hopefully  be put in place by mid-summer (unfortunately not in time for S1).
 

LIGO II/Advanced R&D (Sanders)

LSC LASERS WORKING GROUP  (Benno Willke)
Minutes of telecon June 6 th 2002:
participants: morning call: Jesper, Damien, Maik, Michèle, Volker, Rupal, Benno
, evening call: Peter F., Peter K. Garry, Shally, Ralf, Maik, Benno
1) updates
Adelaide:
- problem with Teflon coatings at TIR interface, when pumped with high power bubbles
seem to show up on the Teflon coating and the spatial waveform of the output beam
looks terrible
- SiO2 coating on that interface won’t work, because the TIR angle is different and the
hence the angle of the end faces are wrong, changing these angles and coating the TIR
surfaces with SiO2 would cause a big delay and is expensive,
- this problem was not encountered in the earlier work on the system pumped with 100W,
now the pump power is 600W and the temperature of the slab is expected to be higher
- next steps will be to make test and optimize the Teflon coating under thermal load
- in the afternoon conference call Peter King mentioned, that he knows a company that
makes very good Teflon coating and will contact Jesper or Damien on this topic
LZH
- laser rods are back at LZH and will be coated within the next 3 weeks (these crystals had
initially a wedge which caused parasitic lasers to start beside of the main laser path)
- in the mean time amplifier experiments were started with a rod longitudinal pumped with
150W through both end faces, 60W were achieved by amplifying a 10W laser in 4 path
through this rod,
- during spatial profile optimization of the amplifier the crystal cracked at the position of
the O-ring sealing, with only 10W 1064nm seed laser and no pumplight present
- in spite of the claim of the O-ring vendors the O-rings were found to absorb a lot in the
infrared, the plan is to replace them by Teflon O-rings which were measured to have a
small absorption
- Rupal Amin is visiting from the University of Florida to work on the thermal lens
compensation of the Faraday Rotators supplied by Efim
Stanford
- Peter King and a colleague visited Stanford to optimize the LIGOI type laser, result:
output power increased from 7W to 10.5W by realigning the amplifier stage and
increasing the NPRO power
- after the amplification of this laser by the external Lightwave amplifier a power of 21.5W
(not optimized yet) could be injected into the first stage edge-pumped Stanford slab, the
output power was 30W for 150W pump power, M 2 = 1.2 (M 2 measurement might be
inaccurate due to beamscan problems)
- end-pumped slabs will be send out for coating and are expected back in about 4-5week,
by that time the first prototype laser head with microchannel cooler will be available
 

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

After evaluating 1"dia. coated substrates annealed at different temperatures, we asked MLD to anneal the "Q" substrates coated with Ta2O5 /SiO2 at 450 degrees C for 24 hours. Also, to include in the same annealing cycle, 1" dia. substrates coated with Nb2O5 / SiO2.
Another set of 1"dia. parts coated with Nb2O5 / SiO2 will be annealed at 500 degrees C for 24 hours to evaluate for absorption and decide on the best temperature to anneal the "Q" coated substrates.

Advanced Suspensions - Silicate bonding

Researching measurement options to characterize silicate bonds to determine if creep is present after the bonded substrates have been submitted to a load.

We are procuring some Schott FS-4 glass to evaluate polishing behavior and to run silicate bonding experiments.
 

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

SUSPENSIONS

Mode Cleaner

Drawings and assemblies ongoing.

MIT Quad

I had a telecon with Norna to discuss the recent work on the Quad by Rich at MIT. We hope to gather a full set of impulse responses, transfer functions and frequency tables to compare the experimental and theoretical results on the quad in its current status.

Other
Worked with Phil in the OTF for a morning helping to install new table legs.
I have written a basic project plan for the 2 SURF students, John Vietch and Dan Mason start with Janeen and I next week.
 

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

AdLIGO Suspensions
Working with Thomas et.al. on the GEO PPARC Proposal input.
 

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

Alessandro
Accelerometer paper ready at 75%

Virginio
Both theoretical and measurement MGAS papers ready at 80%

Szabi
IP paper 50-60% done.

Akiteru
I have been working on details to finalize our work.
Here is a to-do list for next few weeks, apart from desk works:
- implement inertial damping
- improve the optical lever: remove laser and PD from the vacuum tank, replace them with better ones.
- repair broken electronics, particularly coil drivers
- replace coil driver for the end mirror to a lower noise version
- implement dc alignment on the suspension platform
- implement low freq longitudinal control on the IP and the sus platform
- confirm beam centering scheme for the end mirror
I have been working on the inertial damping and the optical lever this moment. Some of the rest has been prepared already.
After these small tasks, I will take (hopefully final) measurements in air and vacuum.

Eric
Made first microdensitometry measurements of MoRuB samples I have done more extensive analysis into the x-ray images on Matlab (including 3-d imaging and histograms) as well as taken a microscope picture.  This has led to concerns about background noise making it impossible to detect surface variation.  I contacted the film manufacturer and am waiting for a response about how to what resolution the film is accurate.  I also plan on somehow averaging the image in order to clearly see the general surface trends, as well as attempting to minimize background noise.
Writing my initial SURF progress report.

Hareem
Splatting more samples of MoRuB-16, MoRuB-18 presents annealing fragility.  Tried new CuBe splatting anvil heads,  maybe the wrong material, tend to stick to film.  Working on AuSi brazing alloy, obtained not uniform melt.  Miniarc melter broken and repaired.

Aso
Preparing talk for next LIGO seminar.  Still calculating flexures under stress and finding it tough.

Mike
Finally a good and repetitive TTO measurement on a standard Ni sample.
Now proceeding to Vitralloys and Glasmet.
Heat capacity holder finished by machine shop.  Preparing cabling for heat capacity measurement.

Kelin
Reconditioned position sensitive photo diode puck.  Found mismatch between laser and photodiode sensitivity, buying matching pair.
Purchased mechanics for room temperature Q-measurement setup.

Ric Hareem Eric
X-rated!
Got safety training for X-ray use.

Ric
Fixed some more problem in creep measurement on June 6th,

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