The LIGO Executive Committee Agenda for Monday, July 28, 2008 will
be:
(Meeting time: 10:30 am Pacific Time)
1.
Announcements
2. Programmatic
(Marx)
3. Comments on Weekly
Report
4. LSC Issues (Reitze)
5. LIGO Lab
Operations
- Administration
(Lindquist)
- Sites (Raab, Giaime,
Shoemaker)
- Commissioning (Fritschel)
- Optical and
Mechanical (Coyne)
- Control and Data
Systems (Bork)
- 40m
(Weinstein)
- TNI (Libbrecht)
- LASTI
(Mittleman)
- Lab Computing (
Anderson
)
- Data Analysis Group
(Weinstein)
- Instrument Science
(Gustafson)
6. Enhancements
(Zucker)
7. Advanced LIGO
(Shoemaker)
8. Change Control
Board/Technical Review Board Session as needed
- See below, CHANGE REQUESTS (Lindquist)
Site and other Business
Issues:
Calendar of future Executive Commitee Meetings
Special Announcements:
Weekly Report
Highlights:
LSC
Issues (Reitze)
- The annual LSC MOU review took place at MIT on July 24 and 25. Groups will be receiving feedback from the review shortly.
Dates for future L-V meetings:
- December 2008 meeting - the December meeting will take place at the University of Maryland from Dec. 15-18. This meeting is a data analysis meeting. The dates of the meeting have been shifted from the original dates due to the availability of facilities and to accommodate faculty with teaching obligations. Note that the Texas Symposium takes place the week before the L-V meeting. Also note that GWDAW has been moved to January.
- March 2009 meeting - the March meeting will be hosed by LIGO/Caltech during the third week of March (16th-19th). This meeting is a full collaboration meeting with instrument science sessions and a Council meeting.
LIGO
Laboratory Administration (Lindquist)
PROPERTY ACCOUNTING (Luna)
- Assisted K. Mailand in making shipping arrangements for one crate from CIT to LLO.
- Continued creating a detail report for all LIGO assets located at CIT.
- Continued working with T. Freeman on the FY 2008 report for the GSA vehicles at LHO.
- Reviewed the surplus equipment list at LHO for disposal.
- Tagged and created property records for a file server at CIT.
DOCUMENT CONTROL CENTER (Turner, Mak)
>From: Cleveland Mak <mak_c@ligo.caltech.edu>
- Processed a large set of drawings for the Advanced LIGO Suspension System.
- Assisted Rod with the shipment of parts/equipment to both observatories.
FINANCIAL SYSTEMS (Funaro, Oracion)
>From: "Funaro, Catherine" <Catherine.Funaro@caltech.edu>
>From: Karl Oracion <koracion@ligo.caltech.edu>>
- Currently working on: cost transfers involving contract labor between LIGO Operations and Advanced LIGO, labor distribution adjustments involving UWMIL.LIGO grid project.
- Responded to various LIGO Operations financial status inquiries (on going).
- Prepared revisions to end-of-June financial review based on information provided since the Executive Committee Meeting on Monday.
- Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport. (For passwords contact Karl)
SUBCONTRACTS MANAGEMENT (Jasnow, Salone)
>From: Gina Salone <gsalone@ligo.caltech.edu>
- Gina Salone is attending an Advanced Procurement seminar at George Washington University in Washington, D.C.
>From: Rudy Arvizu
- A large amount of additional information was generated for the University of Florida Advanced LIGO subaward. This will be sent to the NSF on July 24.
> From: Guy Fish
- The two subcontracts to LSU for the services of Fabrice Matichard have been prepared, and the one for Operations has been issued. LSU has raised some questions about the one for Advanced LIGO because of the revised terms and conditions. Purchasing Services and OGC are addressing this.
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
- The contract for Heraeus is having the new Advanced LIGO terms and conditions inserted. These terms and conditions are being reviewed by Heraeus to see if they affect any of the exceptions they took to the old terms and conditions, which had been accepted by Caltech.
- The contract for Corning has been fully assembled, including the new Advanced LIGO terms and conditions. Corning has reviewed the new terms and conditions and correlated the agreed-to exceptions, and has accepted them.
- Additional information regarding the Ares contract has been assembled. The noncompetitive justification has been considerably reworked to make it stronger and link it to the original competitive procurement. The additional data, including a revised cost analysis, will be sent to the NSF on July 25.
PROPOSALS and REPORTS (Lindquist)
- Prepared an estimate-at-completion for LIGO Operations and reviewed with the Executive Committee on July 21. The goal is to develop the best handle possible on costs to allow us to allocate available funds appropriately to ensure we reach the end of FY2008 with sufficient funds to tide us over until the next cooperative agreement is established.
CHANGE REQUESTS (Lindquist)
- CR-080008 -- Fred Raab provided information for a change request for budget to cover installation costs in WBS elements 2.8.2 and 3.8.2. The change request has been distributed.
- CR-080009 -- This change request adjusts the MIT budget to reflect a credit for an indirect rate adjustment. The change request has been distributed.
Pending
- CR-080010 -- Submitted by G. Billingsley, this request is for funds to cover a Tinsley overrun. This change request has not been distributed.
- CR-080011 -- Submitted by G. Billingsley, this request is for funds for coating runs on samples of three additional polishing technologies. This change request has not been distributed.
HUMAN RESOURCES (Akutagawa)
>From: Cindy Akutagawa <cindy@ligo.caltech.edu>
Quality/Safety (Tyler)
>From: Bill Tyler tyler@ligo.caltech.edu
- Nothing significant to report this week.
LIGO
Hanford
Observatory (LHO) and Interferometer Operations (Raab)
Summary of activities at LIGO Hanford Observatory
(compiled by K. Kawabe)
eLIGO Commissioning (Kawabe)
- Just before venting, the laser power was increased to 4 Watts and the binary inspiral range of H1 was reported to be 7.9 Mpc.
- 4k vertex and HAM6 was vented. HAM1W, HAM5 and HAM6 doors were pulled.
- HAM4 table alignment was revisited with the MC locked in air with 30 mW of power.
- AS beam was clipping badly on the input aperture of the output Faraday, and it was also close to the edge of the second steering mirror (the one right after Faraday). This was fixed by moving the Faraday and the second steering mirror.
- Output beam splitter in HAM4 was steered to roughly center the HAM6 beam on the septum window.
- It was also found that the beam was very low and close to the edge of the steering mirror before the AS view port. This was partly fixed by steering the second steering mirror. Further work may be done at the end of the vent before pumpdown at the end of the month.
- HAM5 door stays open for the weekend with the purge air on.
- Many IOO works, all done in time.
- Post-S5 vs. Today comparison of ITMX images and ITMY.
- Auxiliary optical levers were installed for ITMX and ITMY in preparation for the de-biasing.
- Also in preparation for the ITMX de-biasing and X arm baffle installation, a clean room was set up in front of HAM3.
- TCS electronics and DAQ work is in progress.
- ICST9, which used to be POX table for H2, was moved to HAM6 in preparation for OMC electronics check etc.
Astrowatch (Slutzky)
- Our low uptime continued this week, with 46% uptime and 18% science time. A variety of factors contributed to this, including earthquakes and the large amount of LVEA work over the past few days. The usual summary page is available. Range has been lower with the clean rooms on, in the range of 6 Mpc or lower.
LIGO
Livingston Observatory (LLO) and Interferometer
Operations (Giaime)
Enhanced LIGO Commissioning (Valera Frolov):
- The EMTX optics was taken out of the vacuum chamber and brought o the optics lab for the magnet replacement. So far we are on schedule to replace the magnets, bake the optic, and return it to the end station at he end of the next week. The PAM magnets will not be replaced as we don't have the spare screws without magnets already glued in and the attempt to take the magnets out of the spare screws did not succeed.
- The 10 W LWE laser was decommissioned. The 35 W LZH laser was installed in the PSL room. The cooling and communication for the new laser and pump diodes were tested. The pump diodes were connected by fibers to the PSL room. The output of the fibers in the PSL was measured to be 45 W with the diode pump current set to 60 A. The PSL enclosure HEPA filters were replaced, the enclosure and the optical table were wiped and vacuumed with a HEPA vacuum cleaner. The laser was turned on with the initial power of 25 W. The tuning and alignment of the laser and the optical path into the pre-mode cleaner and the reference cavity is underway.
- The photon calibrator measurements are underway inside of the ETMX vacuum chamber.
- The HAM6 chamber was vented to lock down the OMC suspensions and returned under vacuum for the ISI commissioning.
Safety & Security (Rich Riesen):
- Completed installation and check out of the Emergency Shut-down and Laser Interlocks for the 35 Watt laser system. All Laser Safety functions are fully operational and on-line. Posted all required Laser Safety signs. All signs meet ANSI and OSHA regulations.
Livingston Outreach (Deborah Muhammad):
- Conducted Day 1 of the Project MISE 3-day Workshop Conducted Friday Public Tour for 30 visitors. Designed a new snack for the Light Island Exhibit Designed program for Bossier City Parish teacher PD August 4 -5, 2008. Scheduled field trips for summer 2008 and school year 2008-09. Order supplies for light filter activities. Purchased supplies for workshops. Scheduled Public Tours for Fridays. Managed SEC documents in share folder.
LIGO computing and network security
(Roddy)
Reported under General
Computing, see below
General computing and LDAS admin
(Giardina)
Reported under General
Computing, see below
Reported under LDAS
System Administration, see below
Data analysis & computing
(Yakushin)
Storage/Condor/LDAS admin:
Reported under LDAS
System Administration, see below
Data analysis:
Reported under Data
Analysis activities, see below
Mechanical and Optical Systems (Coyne)
See Advanced
LIGO
Controls and Data Systems (Bork)
See Advanced
LIGO
40-Meter Interferometer (Weinstein)
From Rana Adhikari (rana@ligo.caltech.edu)
- The fiber noise experiment has been moved out of the 40M and into the sub-basement of Bridge to take advantage of the digital control system. Seiji is also helping out on this while he is visiting Caltech.
- The 40M FSS bandwidth was found to be too low. This was traced to somehow, again, using the wrong beam after double passing. We were using the correct +1 beam after a single pass but using the -2 after the double pass. We checked it by driving the VCO and making sure there was no wiggle on the double passed beam. This should get us back into shape.
- Work is ongoing with the image processing with GigE camera and feedback to the masses for beam centering. ezca libraries have been incorporated and now the thing is getting some testing.
- 166 MHz sidebands are getting tuned around in frequency to see if we can get better locking onto the +166 MHz SB instead of the anti-spring -166.
Thermal Noise Interferometer (Black)
- Akira solved last week's mode cleaner problem by replacing the bad OSEM head. All active damping is now working to spec. The arm-cavity discriminants are much lower than expected, in spite of the increased modulation depth from the rotated Pockels cell. We are working on finding the cause of that.
- Our zinc-selenide window arrived for the upgraded photothermal experiment, and Greg and Eric Cahoon are ready to start setting up the pump laser.
LASTI (Mittleman)
BSC-ISI
- We have started the position sensor alignment process. This is where we put the position sensors through a matrix to correct the mechanical alignment, particularly in the tilt directions (i.e. X=>rY) Fabrice has post a nice first result in the LASTI ilog.
Fiber Pulling-Welding
- The articulated arm setup for welding is now nearly finished. We have been making test welds on the bench using this and these seem to be working well. The optics for the fiber pulling machine have been aligned and we have been pulling fibers for strength testing. A little more work on alignment is needed to get higher laser power through. Fibers pulled from laser polished rods have shown average breaking strengths around 38kg. We currently have a fiber suspending a 12.5kg proof mass.
CIT Science Group (Weinstein)
________________
Antony Searle:
- Bayesian analysis with Omega pipeline run on cluster (but buggy).
- Now returning to work on outstanding normalisation and conditioning bugs.
- Produced conditioning test suite and corrected conditioning bugs (Sam).
- Worked on platform portability.
- Reviewed papers for LSC and CQG.
________________
Kent Blackburn for the Grid R Team:
GRID APPLICATION DEVELOPMENT
- Wrote agenda and lead LIGO-Pegasus and OSG-USERS telecons
- Write minutes for LIGO-Pegasus telecon.
- Attend DASWG, Inspiral Coding, OSG-USERS and LIGO-Pegasus telecons.
- Gratia testing at 4 OSG sites --> e-mailed results to Anand.
- Upgrade LIGO software on osg-itb-se.ligo.caltech.edu.
EINSTEIN@HOME ON THE OSG
- Running at 7 OSG sites with devel code --> BNL_ATLAS_1,
AGLT2, Pudue_RCAC, TTU_ANTAEUS, SBGrid-Harvard-Exp,
SPRACE-CE, CIT_CMS_T2.
- Monitoring daily runs and troubleshooting RC 106/107 (
at CIT_CMS_T2, SPRACE_CE), RC 127.
- Monitoring disk usage at remote end large.
BINARY INSPIRAL IHOPE ACTIVITIES
- Download latest Pegasus nightly build.
- Test run with old site schema (but with underlying code changes
for new schema) at CIT_CMS_T2.
- WS-GRAM testing/debugging at AGLT2, LIGO_UWM_NEMO in progress
- Test Pegasus dynamic cleanup of LIGO sire/coire files.
OSG INTEGRATION & VALIDATION TESTBEDS
- Continued to gather quotes and speak with vendors regarding
upgrade of the hardware associated with these testbeds
Recieved approval from staffing committee to make offer for
the grid admin position associated with these testbeds.
GRID MANAGEMENT
- OSG annual report submitted to fastlane last Friday.
- Continued to work on agenda for OSG Council Face to Face Meeting
and on logistics for teleconferencing, etc.
- Wrote quarterly (second quarter 2008) report to OSG for Caltech
as institutional PI.
- Worked with Caltech OSR to get approval to upgrade ITB/VTB Testbeds.
- Attended the DASWG, CompComm, LIGO-Pegasus.
________________
Kipp Cannon:
- Continued working with Ashley King preparing a study on the source localization capabilities of Adv. LIGO detectors for merger waveforms.
- Began investigating possible performance improvements in the coherent stage of the inspiral pipeline, making use of the spherical harmonic correlator code I previously wrote.
- Continued with S4 cosmic string paper/code review.
________________
Diego Fazi:
- Compared SPA and PTF efficiencies in recovering spinning injections
with low kappa.
- Started fixing lalapps_sned to make sure the effective distance
normalization is started at the correct frequency.
- Completed a background estimation job for PTF (now fighting with
plotting routines to avoid memory failures).
________________
Anand Sengupta:
________________
Joseph Betzwieser:
- Getting information together for a wide parameter Crab pulsar search using data from the second half of S5.
Also starting to organize a search for known pulsars at frequencies other than twice the rotation frequency.
________________
Amber L. Stuver:
LIGO Research
- Continued working on fine tuning the IFOtest scripts to be used on
all coils of each ETM, ITM and BS. The work is nearly complete (I
estimate ~1 more day of work needs to go into completing this).
- Continued working on the h(t) validation and made a presentation
to the review committee.
SEC Work
- Gave a public tour to ~25 people.
- Gave a nearly 2.5 hour question and answer session and control
room tour to a groups of ~25 teachers.
- Presented a LIGO science overview talk at BabelCon, a local sci-fi
convention. It was well attended (~19 humans and a Klingon). I
haven't had the chance to exercise my limited Klingon vocabulary in a
long time and it earned some respect from the audience too.
- Drafted my research application for IRB review for a new education
research project to be conducted through the SEC. This will be the
first quantitative study in the SEC and will identify the efficacy of
resolving common misconceptions about gravity and wave interactions
during a student's visit to the SEC.
- Completed the required NIH training course needed for IRB research approval.
Other
- Participated in a telecon (with the FGSA chairs, FIP chairs, APS president and an APS programming member) to discuss a FGSA/FIP joint session at the next APS March meeting. It was decided that this would be a desirable session and collaboration. Planning is ongoing.
- Completed CPR/AED/First Aid training.
________________
Igor Yakushin:
- Generation of L1H1H2 cWB triggers on the second year of S5 is complete; the very preliminary results are available at http://ldas-jobs.ligo.caltech.edu/~igor/S5_ second_year/.
- Generation of H1H2 cWB triggers on the second year of S5 is complete, no postproduction is done yet.
- Generation of L1H1H2 cWB simulation triggers on BRST3 and HWB2 MDC sets on the second year of S5 is complete; no postproduction is done yet.
- Per reviewers request working on the documentation and tests regarding DQ segment usage by the coherent waveburst pipeline in the first year of S5.
________________
Pinkesh Patel:
- Fixed a bunch of glaring memory leaks in the resampling code, but there are still some 32-bit vs 64-bit issues, which need to be addressed.
- Bug-hunting for large spindown errors.
- Took over astrowatch supervision duties from Jacob Slutsky for an indefinite period. These duties include scheduling shifts, reporting to the site/the LSC in general about the progress of astrowatch. It is a monthly rotating position, although I might have to keep it for a couple to three months.
________________
Gregory Mendell:
- Nothing significant to report this week; I will be starting to generate more SFTs for the CW group soon.
Laboratory Computing (Anderson)
(Compiled this week by Kozak)
LDAS Software Systems (Maros)
(Lei reporting for Maros)
cntlmonAP:
- Suppress logging purple balls when the /ldas_outgoing/logs/ cmonClient link is not found in a log filter file as the url is absent in the file.
- Testing:
- dev nightly loop testing - continues to run with metadata being monitored by a standalone script. One or two gcores are seen during some nights. Had to restart db2 one time because db2 detected a deadlock in gds_trigger.
- dev system testing - regression test all behaved as before with only mpi errors; other errors were remained the same: getFrameElements channel_not_found, 11 failed in frame accessor, fr2ilwd getFrameDetectorProc failures. lsyncTest got 1 mismatch in the middle of the test.
- ldas-test running DB2 8.2.7 running with special build 1.9.357 that links against DB2 8.2.7. Runs fine with only datacond no such symbol errors since being restarted when Dan finished updated file system.
- ldas-suntest1 (sunopteron) running DB2 9.1.4 - Run stardalone db2 monitor along with jobs involving metadata. No ipcrm was observed until after Stuart patched ldas-suntest1 again. DB2 got restarted but there is a file path security issue that sysadmin needs to fix.
- tandem-iv running DB2 9.1.5 - Stowed build 1.9.363 on tandem-iv and run loop set that has jobs involving metadata which is on ldasbox4. Running ok since weekend without issues. Working with mysql to test ldas tables on ldasbox4: using ilwdtypes tables convert db2 data types to mysql data types, export data from db2 and load into into mysql tables. Export data out from mysql tables and compare against original db2 values. Except for lob (cannot be imported via load command) and char(13) bit for uniqueId, all data types agree. char(13) unique Id shows difference in padding: db2 pads zeros to right while mysql pads leading digit to the left. Have not resolved this issue yet.
LDAS System Administration (Anderson)
(Kozak reporting for Anderson)
Caltech
(Dan Kozak)
- Installed new LDR local storage module (as tweaked by Kipp Cannon).
- Hashed out details on LLO disk shuffle planning.
- Attended Sun QFS con call (6 people on an emergency con call to get <300 bytes of data).
- Compiled list of tapes for shelf storage at LHO.
- Got some feedback on our open ssum case with Sun (finally!). Tim Whalen was able to duplicate our problem on an x86 (works fine on Sparc) and passed it along to engineering. He said he'd forgotten to update me, which implies that engineering has had the problem for a while. Good news.
- Worked on tracking down LHO corrupt frame file and/or dd (in Disk2Disk) errors. Probably caused by another machine on the SAN rebooting;we already have an open case with Sun.
- Implemented LDR storage module mod to ssh to opterondata-cit to do the md5sum on files over 100MB in size.
- Got Virgo V2 data flowing to CIT (edited storage module and collections.ini).
- Responded to DASWG email about bad Burst-MDC bad frame;this frame has been bad since the beginning and I've told Keith Thorne about it repeatedly.
- Helped Robert Schuler at ISI with an rsync issue (he couldn't remember the pass-
word :-).
(Phil Ehrens)
- Finished up MOU reporting support.
- Replaced all fans in cluster node 34.
- General support for SURF students and staff.
MIT
(Fred Donovan)
- Adding virtual interfaces to nodes/servers (10.9.x.x).
Livingston
(Igor Yakushin)
- Disk 9 in 3511-3 failed; the replacement disk should arrive tomorrow.
- The new gateway box passed burntests; looked into a problem with DQ segments discovered by John Zweizig: it appears that when version 10 was inserted for some DQ segments, the validity interval was cut at about August 18, 2007.
- Some segments at the end of S5 might have to be corrected.
- Archived the last couple weeks of raw data per Valera's request.
Hanford
(Gregory Mendell)
- I have released the LIGO Data Grid (LDG) 4.7 Client, ClientPro, and Server packages. See: http://www.lsc-group.phys.uwm.edu/lscdatagrid/.
- I have also been tracking down and fixing some minor short-lived data corruption problems at LHO and LLO.
General Computing (Wallace)
MIT
(Fred)
- Labview licensing issues.
- Spec'ed purchase of 16GB intel for globus monitoring.
- Additional vmware installation.
- More ilog work.
- Two o/s reinstalls.
Livingston
(Dwayne)
- Replaced tapes in GC tape library.
- Ordered and installed a KVM in rack outside my office.
- Installed Ubuntu and Solaris on the two servers repurposed from LDAS, patched both systems.
- Installed more software on the SEC PC.
- Converted a POP user to IMAP.
- Renewal of Matlab support.
- Installed VPN software for a user.
- CPR/First Aid training.
- Set up Staging Building conference room with a dedicated PC for EVO, to be tested today during GC call.
- Further discussion with Shannon regarding new authentication system Kantech troubles with both the main gate and new laser diode room, both resolved.
- Created web space for the DetChar group.
- Numerous usual/unusual user support requests.
- Cleared spam trap.
Hanford
(Larry)
- Working on a couple of document issues.
- Worked with Dave B. on some mail issues.
- Modified a couple of user accounts, reset a few mail aliases and updated their account.
- Debugged a couple of h/w items over the phone.
(Mike)
- Continued work on managing dhcp server.
- Some work on their mail server flushing out the queue.
Caltech
(Veronica)
- LSC, LIGO: Ongoing work on the ligo.org redo -- Working through various implementation issues (a hybrid css layout, browser compatibility). Updates of lsc-related publications database/webpages, misc web updates.
(Christian)
- Gina Salone - Configured loaner laptop for Gina to use on travel.
- Ed Jasnow - Removed malware program from Ed's workstation.
- Called Dell support to have monitor in the display case replaced.
- Surplus old monitors and cpus this week.
- Re-imaged 2 laptops that were returned to the loaner pull this week.
- Helped run additional network cables.
- Testing/debugging of the Clearone equipment on the EVO and phone system.
- Other misc.: Continued onsite software/phone support.
(Mike)
- Work with Larry on the new mail server.
- Continued work on SolidWorks 64 bit version 2009. Having some issues with loading the pdmworks vault. "On going project".
- Working on a test ADVLIGO server 64bit version of server 2003 with Terminal server services running. I have prismpm working, I'm having some issues with primavera.
- Helped group with surplus/storing a lot of equipment that was located in our area.
- Helped run some additional network cables in B/A server room 18 and one for Veronica.
- Some testing with group on new conferencing equipment for EVO.
- Other misc user support and sysadmin tasks.
(Melody)
- New DCC: Addressed several issues posted by the group. Worked on substring content searches. Started looking into incorporating the current DCC's numbering scheme with DocDB's.
(Larry)
- Finished up the paperwork on a number of procurement items and now working on new ones. Getting quotes for different items.
- Worked with Christian on testing out the Clearone system with EVO and the phone connection. It has passed the tests and now checking on getting it installed.
- Installed the new server. Because of all the different issues that would/were causing it to drag out we bit the bullet and put in the new system. The only major casualty was the mailman system. It is barely limping along, I am in the process of fixing some of the items while building a new one with the latest versions of s/w but it will still take some time to get things moved over to it.
- Worked with the group in getting equipment moved and removed. Basically cleaning up some of the junk.
- Helped run some network cables and did a quick check on others that need to be replaced.
- Multiple modifications on user accounts.
- Worked with Mike on tracking down different problems on different machines. Went over a lot logistical issues with Mike on the projects that he is working on.
- Working with a number of people on different logistical issues with their setups and needs.
Advanced LIGO and Supporting R&D (Shoemaker)
Advanced LIGO Management
from Carol Wilkinson
Project Controls
- Two Advanced LIGO Change Requests (ACR) are in process for review by the AdL CCB:
- ACR to incorporate the changes due to the decision to go to a stable recycling cavity is in process. Equipment costs are expected to increase by ~$400K, which is within estimated contingency. NSF will be notified of the changes.
- ACR for the new scope for building renovations to accommodate in-house cleaning stations. New cost estimates including the cleaning stations require usage of the entire associated FMP contingency. A decision to add new back doors to the LVEAs at both sites will likely be delayed until a later date in the project when the project financial state has evolved further.
Procurements
- The first Advanced LIGO production parts have arrived at LHO for the HEPI seismic isolation.
- The procurements team is preparing requested additional information on the procurement approval packages submitted to NSF for the Univ. of Florida Input Optics contract and the project controls staff contract.
- Several RFQ’s for SEI HEPI procurements are in process.
Progress Updates
- The Advanced LIGO Project Monthly Report for June is posted in the DCC http://arcturus.ligo.caltech.edu/docs/internal/M/M080114-01/
- The first Quarterly report to NSF is due July 30.
Meetings & Reviews
- The next monthly status meeting will be on Thursday, August 7 at 8:30 AM PT.
Advanced LIGO Systems
Systems
Dennis Coyne <coyne@ligo.caltech.edu>, Peter Fritschel <pf@ligo.mit.edu>, Calum Torrie<ctorrie@ligo.caltech.edu>
AdL Project-Funded Activities
Design Reviews:
Procurement Reviews:
- Reviewed and revised the technical input to the HEPI actuator RFQ
- Participated in the bid evaluation committee for the HEPI double-helix, machined margaing steel spring
Technical Review Board (TRB):
Vacuum Review Board (VRB):
- The VRB issued L080072-00 approving the proposal L080045, Limits to high vapor pressure elements in alloys. In addition, the phosphor-bronze lens retainers and adjustment cams used in the B-OSEM assemblies are approved (as PB2 material) as slight, but acceptable, exceptions to these new guidelines.
- The VRB issued Refer to L080075 in response to L080042: Is 303 stainless steel acceptable in the LIGO Vacuum system? For ADL only, LIGO should avoid fabricating new parts or reusing Initial LIGO parts made from 303 SS unless there is significant functionality or cost impact involved. If 303 SS is to be used then a waiver should be requested from the VRB. Catalog fasteners of 303 SS are allowed since their surface areas are small.
Configuration Control:
- A draft plan of how to change our (mechanical) engineering workflow procedure in order to work with the new DocDB system. In particular a new draft procedures document and a draft user's guide have been created. A simplified users guide (with help from Meyer) for PDMWorks has also been created, the plan is to roll this out to all users in the coming weeks.
- Completed the scope change defintion and baseline costing (without revised escalation due to schedule shifts, which will be done by the PM group) for the stable recycling cavities change request. The request includes the simplifications resulting from the small wedge angle layout as well (elimination of the ITMx pick-off beam (POX) beam reducing telescope).
Design:
- Furthered the implementation of an Ansys model for calcualting modal damping due to nonhomogeneous loss in support of parametric instability control methods. Using ANSYS Workbench both a static and a modal analysis of the ETM optic has been created in order to look at the strain energy associated with various sections of the test mass assembly including bond, ears and coatings. Simple models have been built to compare to existing work done by Elliffe and Cunningham
- Test Mass optic gravitational sag calculation using ANSYS Workbench: a static analysis of the ETM and BS optics under gravity has been created with a view to investigating the optical surface deformation due to gravity. The model is currently re-creating work done in LIGO-T050184 and will extend this work to include the effect of the wire around the barrel of the BS optic.
- FTIR results for the eLIGO baffles (polished stainless steel oxidized by multiple passes through an air bake at ~1500F for a total of several minutes) shows surface cleanliness (for oily residues) as clean as vacuum baked parts. The eLIGO baffles pass -- no further cleaning and baking are required. Furthermore this appears to be a viable approach for AdL.
- Begining trade study on isolation requirements and design approach for the ISC reflected port table
- Examined the HEPI fluid measurements (particulates, viscosity and spectrometric) and compared to previous measurements. Although there is evidence of some wear elements, the levels are still quite low and acceptable. However a recent attempt to change filters on the LLO pump stations resulted in clogged servo valves. As a follow up, the cause and the possible need to revise the filter design is being investigated by the SEI group.
- Proposed to the Arm Length Stabilization TRB that we establish the PDH scheme with 532 nm as the baseline for this system. Still under consideration is the injection location for the probe beams: at the end stations, or in the vertex.
Interfaces:
- Finalized the SPI interface for the ETM and ITM quad suspension structure. RAL have now added additional holes to the production structure sleeves use in the ETM assembly. These holes interface with a concept for the non-suspended components of the SPI. The design allows for adjustment and the fact that, due to welding, not all of the angled sections in the sleeve are identical. A document indicating the conceptual design and updated structure sleeve drawings have been added to the DCC. [Note that the approach for arm length stabilization has not yet been decided; This effort is not ensure that the SPI approach is not precluded.]
- Worked on a gold thermal shield interface (as alternative to gold barrel coating) definition for the quad suspension. Have developed an installation concept for a multi-part shield. Will calculate thermal shielding performance given achieved coverage next. Two concepts for the barrel sleeve are currently being considered. Once these have been detailed further a layout of just how much of the barrel it is possible to cover will be created for each of the concepts. RAL have been asked to modify the lower structure face plates in the ETM assembly in order to accommodate both of these concepts. As well as creating conceptual designs we are also looking at the assembly procedure with SUS. Once this the concept and assembly procedure are defined, a doucment will also be submitted to the DCC.
- Held meeting on PRC, SRC wedge angle, wedge clocking and orientation angles. Resolved PRM, PR2, PR3, SRM, SR2, SR3 wedge angles and orientations. IMC optic wedge angles resolved, but orientation (horizontal or vertical) is pending further investigation. Further actions underway to determine if the orientation angles for PR2/SR2 and PRM/SRM can be reduced.
- finalizing change request for stable recycling cavities, including scope and cost transfers between subsystems
- RODA M080109-00, "No Fibre Pulling Machine at LLO" has been signed. Decision is to have a single fiber pulling facility located at LHO. Fibers needed at LLO are shipped in special containers as needed for installation
- RODA M080134-00, "E/ITM and BS/FM pitch frequencies and d-values" is being circulated for review & signatures.
- See the RODA status page and the Interface Control page.
Modeling and Simulation
From: Hiroaki Yamamoto hiro@ligo.caltech.edu
e2e Weekly Meeting
- Sany explained the modeling status of ISI and of the advLIGO MC, mainly focusing the noise filtered and induced by MC which is placed in near by chambers with coherence in motion.
Static IFO Simulation (Hiro)
- Melody compared the performance of fft in matlab, which uses the FFTW code, with the performance of FFT built in a standalone C++ code.
- The standalone code is better, but within factor of 2, depending on the size of FFT. So, at some point, it may be useful to port a part of the SIS code in matlab so that simple IFO field calculations are done in matlab for ease of analysis. The full version of IFO will favor the standalone version because of the longer execution time.
- Hiro is modifying the SIS code to implement new features for the analysis Bill is doing to understand the relationship between the long wavelength (>0.5cm) mirror profile and the cavity loss.
- The mode mismatch issue of LLO is being studied using MITFFT08.
Mechanical Simulation for Advanced LIGO (Sany and SLU team)
- Compared the Ground to Witness STS transfer function of the Single stage active HAM seismic isolator that we computed with our e2e model (based on the Stanford University Group’s state space model) with the experimental data Jeff K. et al took recently. Except for the structures that the model does not include (such as the cross beam and other supports), the computational and experimental results show quite similar features both in the magnitude and phase.
Facilities Modifications and Preparations
From: John Worden worden_j@ligo-wa.caltech.edu
- The bid package for assembly cleanrooms is at Caltech for review. At LHO we are focused on getting the Staging building renovation package ready to send to Caltech. At LLO Allen has a bid package out on the street for paving. Also, he has a contractor preparing bid documents for building renovations. When this is ready it will go to Caltech.
Seismic Isolation
From: Ken Mason kmason@ligo.mit.edu
- HAM Crossbeam Design: Finished drawings and obtained quote for new Support Tube Clamp design. Preparing to order prototype Crossbeams for LASTI.~ Andy S.
- BSC ISI Development: We have started the position sensor alignment process. This is where we put the position sensors through a matrix to correct the mechanical alignment, particularly in the tilt directions (i.e. X=>rY) Fabrice has post a nice first result in the Lasti ilog. ~Rich M.
- SEI Project Activities: A design is complete for a test stand similar to the one at LASTI to assemble and test both HAM and BSC seismic isolation systems. This will reduce the number of stands needed and save floor space. Fabrication drawings still need to be drawn. A purchase req was submitted to procurement for the HEPI servo valves. The position sensor modified by Kaman to reduce noise came back and was tested by Nick. He found the noise to be worse in the .1 to 10 Hz range which is most important to us. ~Ken M.
- The schematics for the 8-ch Valve Driver, Pier Interface, DAC Interface, and STS-2 Interface are finished, and the PCBs are done also. I'm still working on the front panels, and will get the bill of materials together shortly. I am also looking into making the pump servo digital instead of analog. Learning to use Rolf's RCG tools to accomplish that. ~Ben A.
- Pumps stand has arrived. We have received a third bid for the Pump Station Manifold--will make decision there soon.~ Hugh R.
Suspensions
From: "Greenhalgh, RJS (Justin)" J.Greenhalgh@rl.ac.uk
ALUK held its latest Project Management Committee on 11 July 2008 (See LIGO-M080132-00-K). A brief activity summary follows:
- RAL: Assembly of beam splitter going well; lower masses suspended . FEA work on BS full design confirms effects of short stays in realisable configuration; final touch will be to add mini-stays near bottom of structure. We are aiming to hold the review of the BS/FM in August before the monolithic assembly.
- Quad OJEU process status as follows:
- Machined items. Drawings with manufacturer; first delivery of final parts to RAL has taken place (the top stages for all sixteen of the quad suspensions).
- Weldments. Drawings with manufacturer. Weld test complete but certificate not yet provided.
- Blade springs. Material order placed. Tender process nearly complete for blade manufacturer.
- Continuing input to work at LASTI; large package of parts now dispatched.
- Glasgow: Continuing work on preparation at LASTI. Revised schedule with target date for monolithic installation in second half of August – no slippage in three weeks since schedule was written. Mark Barton now established at Caltech and attending some UK telecons.
- Birmingham/Strathclyde: OSEM manufacturing ongoing. Phosphor-bronze issue now resolved (OK to use suitable grades in vacuum). Samples of alumina sleeve undergoing testing (switch from Macor may give performance exceeding spec by ~factor three, a useful margin). Pre-selection of photodiodes has reduced variability in output on spares batch; extension of technique to production scale is in hand. Some concern about getting specs for remaining suspension types soon enough, meeting set for 15th July.
- Overall: continued steady progress towards monolithic suspension at LASTI; target second half of August. Production parts of ETM/ITM have started to arrive. Continuing work on production OSEMs and pre-production electronics.
From Janeen Romie and Norna Robertson
(romie_j@ligo-la.caltech.edu, nroberts@ligo.caltech.edu)
- The OMC SUS was packed up at Caltech and is currently en route to LHO. It is on schedule for getting the silica bench suspended during the week beginning 4th August.
Core Optics
From: GariLynn Billingsley Billingsley_G@ligo.caltech.edu
- Project: We are still working on issuing the Corning and Heraeus contracts. Incorporation of the new terms and conditions has delayed us by a couple of days. Vagesh has kindly agreed to provide drawings and specifications for the polishing and coating procurements. Development Cheryl has been able to get access to viewports and is in the process of establishing baseline images of optic scatter for the Hanford IFOs. Liyuan has completed a preliminary measurement of an ELIGO septum window. This is an AR coated window, the backscatter is in line with what we expect, but the forward scatter is considerably more than we would expect. Further investigation is underway to crosscheck this result.
Auxiliary Optics
From: Michael Smith smith@ligo.caltech.edu
- Work under Project budget Mike revised the AOS schedule based upon the stable recycling cavity baseline. He is using the recent cost experience from fabricating the ELIGO baffles to update the ADLIGO cost book. Work under Operations budget OPTLEV Tara and Giovanni made preliminary relative intensity noise measurements of a free-space HeNe beam on a benchtop hitting a YAG-444-4A quad photodiode. Zach is analyzing the optimum spot size on the QPD and is investigating various RIN models. Robert Schofield is continuing to measure the angular noise characteristics of the LVEA floor and the optical lever piers at LHO. Mike proposed interface definitions and a set of performance requirements for the Optical Lever system. ETM TEL SUS Chris ordered magnets for testing and is designing a test facility. Chris gave the ETM telescope suspension parameters to Virginio who will calculate the suspension transfer function and determine the amount of damping that is needed to achieve a Q of approximately 100. ELIGO SLC Mike and Bob Taylor prepared the remaining 4 support rings for shipment. All parts for the ELIGO baffles have been received at the sites. LHO is cleaning and baking some of Luke's parts that will be shipped to LLO for installation beginning 7/29/08. Ken and Luke will be at LHO during the week of 7/28/09 to install the manifold baffle, and the HAM5 baffle. Staff at LLO will install the ETM X baffle during the week of 7/28/09. Luke and Ken have revised their installation documents. Mike is compiling a revised installation document. TCS Phil and Aidan completed the commissioning of the TCS laser system at LHO, before the steering mirror was damaged. New copper mirrors have been ordered to replace the damaged steering mirror at both sites.
Input Optics
From: Rodica Martin <rmartin@phys.ufl.edu>
ELIGO Commissioning
- LHO - HAM1 work: Fix beam clipping, replace anti-refl and MMT1 baffles, measure power budget - Kate, Muzammil, Volker
- LLO: Installed irises on the PSL table and marked MC spot positions on the LVEA walls for alignment of the beam on the PSL and in the HAM1 chamber. Also done preparatory work for the 35-W laser installation, (disconnecting cables, removing optical components on the PSL table, test new optical fibers for eLIGO PSL) - Antonio.
- Mode matching- measured beam size at ETM as function of TCS power - Kate
Advanced LIGO
- Finishing Mach-Zehnder EOM designs - Luke
- Revising IO blank procurement drawings - Luke
- Preparing bid package for glass procurement; writing DCN for IO blank specifications - Rodica
- Worked on procurement aspects for NSF review - Rodica
Prestabilized Laser
From: Peter King pking@ligo.caltech.edu
Operations
- Nothing significant to report.
Project
- The installation of the EnL Laser has started. Removal of the old 10-W laser and its associated cabling took a little longer than anticipated. The PSL table has been wiped down, the HEPA fan unit replaced and the interlocks have been checked.
- The pump fibres and pump diodes are in the process of being checked out. All six pump fibres seemed to have survived being pulled into place. Pump diodes 1-3 check out okay and there's a query about diode 4. The problem with diode 4 is that the temperature seems to run away at the nominal operating current. An e-mail has been sent to LZH, a call will take place in the morning to see what remedies there are.
Control and Data Systems
From: Rolf Bork rolf@ligo.caltech.edu
- Nothing significant to report on AdvLigo DAQ. Primarily working to get PDR docs out by mid/late next week.
For additional
information about this report, contact Albert Lazzarini