MOU |
Attachments |
Approved |
| ACIGA |
ACF, DAT, LAS, OPS, OPT, OUT, SUS, Z |
|
| Andrews University |
DAT, OPS, OUT, Z |
|
| Balearic Islands |
DAT, Z |
x |
| Carleton College |
DAT, OPS, Z |
x |
| Caltech Exper. Grav.-Physics Group |
SUS, Z |
x |
| Caltech Relativity Group |
ACF, DAT, OPT, OUT, Z |
x |
| Columbia University |
DAT, OPS, OUT, Z |
x |
| Embry-Riddle Aeronautical University |
DAT, OPT, SUS, Z
|
x |
| Eotvos University |
DAT, OPS, OUT, Z |
|
| Florida, University of |
ACF, DAT, OPS, OPT, OUT, SUS, Z |
x |
| GEO600 |
ACF, DAT, LAS, OPS, OPT, OUT, SUS, Z |
x |
| Goddard Grav. Wave Astrophys.Group |
DAT, OPS, Z |
x |
| Hobart & William Smith Colleges |
OPS, OPT, OUT, SUS, Z |
x |
| Institute of Applied Physics |
OPT, OUT, Z |
|
| IUCAA |
DAT, Z |
x |
| Louisiana State University |
DAT, OPS, SUS, Z |
x |
| Louisiana Tech University |
DAT, OPS, OUT, Z |
x |
| Maryland, University of |
DAT, OPS, Z |
x |
| Massachusetts at Amherst, University of |
DAT, OPS, Z |
x |
| Michigan Gravitational Wave Group |
DAT, OPS, OUT, Z |
x |
| Minnesota, University of |
DAT, OPS, SUS, Z |
x |
| Mississippi, Uiversity of |
DAT, OPS, OUT, Z |
x |
| Montana Grav. Wave Astronomy Group |
DAT, Z |
x |
| Moscow State University |
Z |
|
| NAOJ-TAMA |
ACF, Z |
x |
| Northwestern University |
ACF, DAT, Z |
|
| Oregon, University |
DAT, OPS, OUT, Z |
x |
| Pennsylvania State University |
DAT, OPS, OUT, Z |
x |
| Rochester Institute of Technology |
DAT, OUT, Z |
x |
| Rochester, University of |
DAT, Z |
x |
| San Jose State University |
ACF, Z |
x |
| Sannio, University of at Benevento |
DAT, OPT, Z |
|
| Sonoma State University |
LAS, OUT, Z |
x |
| Stanford University |
ACF, LAS, OPS, OPT, OUT, SUS, Z |
x |
| Syracuse University |
DAT, OPS, OPT, Z |
x |
| Texas, University of at Austin |
DAT, OUT, Z |
|
| Texas, University of at Brownsville |
DAT, OPS, OPT, OUT, Z |
x |
| Trinity University |
OPT, OUT, Z |
x |
| Washington State University |
DAT, OPS, Z |
x |
| Wisconsin at Milwaukee, University of |
DAT, OPS, Z |
|
PROPERTY ACCOUNTING (Luna)
- Assisted G. Billingsley in making shipping arrangements for the Heraeus fused silica blank from CIT to LHO.
- Had a meeting with Adilia Koch, export compliance officer to discusse import and export issues concerning the Heraeus Subcontract 1085459.
- Assisted P. King with packing, shipping and creating a commercial invoice for four photodiodes to the Max Planck Institute, Germany.
DOCUMENT CONTROL CENTER (Turner, Mak)
>From: Cleveland Mak <mak_c@ligo.caltech.edu>
- Completed the process of verifying/determining cite references for the FY 2008 LIGO Operations Annual Report Publications List. [This effort is part of preparing the Annual Report for the NSF. – pel]
FINANCIAL SYSTEMS (Funaro, Oracion)
>From: "Funaro, Catherine" <Catherine.Funaro@caltech.edu>
>From: Karl Oracion <koracion@ligo.caltech.edu>
- Submitted the task set-ups for the FY 2009 Operations Cooperative Agreement to the Office of Sponsored Research.
- Currently in the process of submitting PTA set-up requests online for new the LIGO Operations cooperative agreement.
- Worked on MIT.GRID closeout; reviewed final invoices for payment,requested remaining encumbrances to be closed out and resolved final p-card reconciliation issue.
- Researched and retrieved financial data to be included in NSF annual report.
- Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport (For passwords contact Karl).
SUBCONTRACTS MANAGEMENT (Jasnow, Salone)
>From: Rudy Arvizu <arvizu_r@ligo.caltech.edu>
- The purchase order for the Advanced LIGO facilities modifications was completed for the winning bidder. This purchase order will be sent with the negotiation memorandum to NSF for re-approval.
- The contract with Heraeus has been revised as a result of discussions with Caltech OGC. The remaining differences in the terms and conditionss are minor, and will be discussed with Heraeus prior to execution by Caltech.
- Five bids were received for the Advanced LIGO test stand. Evaluations are ongoing.
>From: Gina Salone <gsalone@ligo.caltech.edu>
- Three bids were received for the furnishing of liquid nitrogen to the Hanford observatory. The the company that has been furnishing liquid nitrogen to Hanford since it began operations will continue operations under a new contract, with options.
- A contract modification was issued to Tinsley. Part of this was associated with the cleaning effort of the optic. They are nearing the completion of this contract.
- Evaluation of the HEPI housing was completed today. Three bids were received, and the Committee selected a winning bidder.
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
- We are awaiting a response from the University of Glasgow to our proposal to procure the Advanced LIGO suspensions for them.
- A letter is being prepared for both the UK and Germany outlining the process for receiving and transferring title to the items they are contributing to Adv. LIGO. The items will initially be Caltech property, but will be transferred to the U.S. Government upon their installation into one of the observatories.
PROPOSALS and REPORTS (Lindquist)
- The monthly status report for the end of August was submitted to the NSF.
- We are in the process of preparing an Annual Report for Current Operations. Dave Beckett is preparing the main sections, and we hope to have a draft for review soon.
- We are preparing the accounts structure for the new cooperative agreement that due to start October 1, 2008. The accounts have been provided to the Office of Sponsored Research and they are setting them up.
- We reviewed the LIGO Operations Financial Status on Monday using the end of August data.
CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)
- There are no open change requests.
Quality/Safety (Tyler)
>From: Bill Tyler tyler@ligo.caltech.edu
- The annual LHO safety audit was completed last week (10-12 September). This year’s audit team included the new Advanced LIGO Safety Engineer, David Nolting and the Assistant to the Division Administrator, Jo Ann Hasbach.
- The audit team was particularly impressed with the local site personnel safety steering committee established by Hanford site manager. One of the committee proposals was to include as members new hires and recent "grads" to help enhance their safety awareness and knowledge. John Worden was asked to share this site safety committee concept with his counterpart at Livingston.
- One audit agenda item that invoked considerable discussion was the performance and experience with the "Card Control Access System" during the past year and the associated number of Incident Reports it provokes. The outcome of this discussion was the request that a few "experts" be designated to re-examine the card system design and function considering that a "system" only had two design/implementation requirements: to provide "access" control and laser safety controls. It was also agreed that the experts needed to respond quickly with their recommendations for appropriate system modifications or changes.
- The audit team did not find/note any other significant safety issues or concerns.
- A Hanford Observatory audit report is in progress.
LIGO
Hanford
Observatory (LHO) and Interferometer Operations (Raab)
No report.
LIGO
Livingston Observatory (LLO) and Interferometer
Operations (Giaime)
No report.
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 (Adhikari)
- Lock acquisition work resumed. Rob was able to lock each component (Arms, PRMI, DRMI) but the 2Arms+DRMI lock has been unsuccessful so far. He was trying to lock on the spring side. Will try no-spring side, which is easier to lock.
- Alberto measured the X-arm length (38.4580+/-0.0003m). He is preparing for the TEM01/10 split measurement.
- Yoichi calibrated the FSS error signal. The in-loop frequency noise is about 10^-2 Hz/sqrt(Hz) from 100Hz to 10kHz. Seems to be fine but be aware that this is an "in-the-loop" measurement. A canonical cavity pole frequency of 38kHz was used for the calibration. A cavity pole measurement with cavity ring down is planned for more accurate calibration.
- Joe set up a DNS server for the martian network so that we don't have to maintain/etc/hosts file on each host.
- Wenzel oscillator and a mini-circuit RF amplifier arrived. Peter connected them and tested it with the FSS overnight. They worked fine. He is now putting them into a shielded box.
- A GPIB-ethernet converter and an ethernet-wireless bridge arrived. Yoichi is setting them up.
Thermal Noise Interferometer (Black)
- Nothing significant to report this week.
LASTI (Mittleman)
BSC-ISI
- We are still working on stage one, had some computer/matlab (which is that same thing that I said last week). We have designed a set of low blend filters that will provide isolation starting at ~1/8Hz. We haven’t had a chance to test them yet since Fabrice is out of town.
Quad Prototype
- Helena (Caltech), Marielle(Glasgow) and Liam(Glasgow) are here this week bonding the prisms to the compensation plate. Amanda (RAL) is also here working with Marielle and Liam on the fiber welding tooling. This is in preparation for next weeks effort by the fiber group to do a test hang of a 40kg mass.
SEI
- Myron and Andy have started to remove one of the gullwings; the HEPI springs on one pier have been unloaded.
CIT Science Group (Weinstein)
_____________________
Antony Searle:
- Working for Omega pipeline S5Y2/VSR1.
- Working on Bayesian position reconstruction C code.
- Finalized and submitted Bayesian paper with Sutton & Tinto.
_____________________
Amber L. Stuver:
- Completed S5YR1 MDC comparison WRT different ETG combinations to characterize what simulation parameters each ETG is sensitive/insensitive. I am documenting these results at: http://ldas-jobs.ligo.caltech.edu/~stuver/burst/ MDC/S5YR1/ and will be presenting these results to the Burst group after the L-V meeting.
- Gave control room tour to a home school group of ~30 7th & 8th grade students.
- Finished expanding the LIGO and GW science education document for the APS education outreach people.
_____________________
Kipp Cannon:
- Continued working on low-latency inspiral analysis techniques.
- Continued with the s4 cosmic string cusp search review.
- Did some maintenance work for lal, libframe, and glue.
- Telecons: daswg, inspiral, s4 strng cusp.
_____________________
Cristina Valeria Torres:
- Continue to work on CBC follow up document, working cooperatively with Romain Gouaty.
- Testing tracksearch subroutines which have been upgraded for cleaner and quicker pre-processing of input data.
- Work with S. Mukherjee on using UTB's multidimensional glitch classification pipeline attached to the tracksearch pipeline.
_____________________
Gregory Mendell:
- Nothing significant to report this week on data analysis.
_____________________
Joseph Betzwieser:
- Have been helping Pinkesh debug F-statistic resampling code.
_____________________
Becky Tucker:
- Worked with Chad to modify the continuous chi-squared test.
- Looked at the EOBNR injections from Craig's EOB vs. EOBNR comparison to understand strange chi-squared behavior.
- Looked at both bank veto and continuous chi-squared tests from a month of the low mass LV search.
_____________________
Chad Hanna:
- I worked with Becky on modifying the continuous chisq code in the inspiral pipeline to focus on the most sensitive region of the spectrum. We hope it will improve its power at discriminating signals from noise.
- I have worked more on the IMR metric and template placement.
- We held another high mass search call and are following up some anomalies found in a recent run using EOBNR templates.
_____________________
Drew Keppel:
- Review for the S5 1Yr Low Mass CBC search.
- Preparing a talk for the LVC meeting.
_____________________
Diego Fazi:
- Preparing to present recent results on PTF at LVC meeting (by Alan).
_____________________
Kari Alison Hodge:
_____________________
Anand Sengupta:
- Read and provided some comments to the S5 1st year paper. Added paragraph on TrigScan.
- Reviewing paper for CGQ.
- Closed PR 1919 - 1922. Added changes to the glue package to include changes to the sim_inspiral table.
- Calculating the metric co-efficients for Chad's bank. This is independent of Chad' calculation to see if the metric co-efficients can be written in a closed form.
- Started to look at Craig's failed time slide jobs in which the EOB and EOBNR search templates are compared head to head. This will form the basis of the \chi2 veto plots to check if EOBNR is preferred for the high mass search.
_____________________
Pinkesh Patel:
- Berit from AEI has been running resampling and testing it for its speed. The results are very encouraging and we had a telecon on thursday morning to discuss the results. The pulsar group is keen to support this code and investigations are on going as to how to use it best.
Laboratory Computing (Anderson)
LDAS Software Systems (Maros)
- The frameCPP library has been modified to properly write compressed FrVect structures without modifying the original structure. This code has been working for over 23 continuous hours by the frame builder. Initial performance benchmarks indicate that it should be possible for Enhanced LIGO to write compressed raw frames, thereby increasing the look back time for raw data on disk by a factor of ~2.
- The instability of the datacondAPI observed this past week continues to be investigated. When running it under valgrind over night and then trying the corrected frameCPP code, no core files were observed.
- System testing this week was done using version 1.9.415 of the LDAS software. The lsyncTest only ran 5 successful rounds and was hung. 09/11/08 - 09/18/08.
- The regression tests pr2530, pr2785.tcl, pr2793.tcl, and pr2108.tcl where converted to be part of the Automated System Test Suite.
LDAS System Administration (Anderson)
Caltech
(Dan Kozak)
- Got a response from Sun on our opterondata-dev hardware case--they suggested a patch for the bge driver. Will coordinate with Mary/Ed to install this (and other patches).
- Got a response from Rich Osborne at Sun about our morbo crash being caused by the "bad pointer in inode bug" which is "fixed" in 4.6.49 only in the sense that it doesn't generate the problem case anymore: it can still crash the system when it encounters such an inode written before the patch was installed (if I'm reading him correctly). Sent him some followup questions, waiting to hear back...
- Opened new case for the opterondata-cit crash of 9/13, got a response indicating that we should upgrade the firmware in the machine.
- Weekly check of frame files in CIT cluster showed no new bad frames, but for the third week in a row node67 was the slowest to finish the check by a factor of ~5.
- Checked that Emelie's regenerated ExtTrig frames passed FrCheck and handed them off to Scott for publishing.
- Ran some data through the new production T10KB drives and couldn't get more than 100MB/sec out of them when writing compressable (L0) data via SAM.
- Started testing that T10KA tapes can be read on T10KB drives (ongoing).
- More discussion with Greg about how best to walk through S5 L0 data for SPECIAL/TIMING RDS generation.
(Phil Ehrens)
- Investigated possible fallback methods for Apache mod_auth_kerb - Failed to identify any reliable method so far... Will continue investigating.
- Wrote script to automate the setup of new Subversion repositories on vcs.ligo.caltech.edu - Can now set up a repo in a few minutes.
- Assisted Mike Pedraza with diagnosing a failed SATA controller on the machine lscweb.
- Replaced one fan and one hard drive in cluster node 126.
- Added support for arbitrary user cgi scripts in the home directories on ldas-jobs. Discussed implications of this with Stuart and Shannon.
- Installed Kerberos keytab on tarazed.ligo.caltech.edu for CentOS Apache configuration testing.
- Moved System Administration wiki dziban to vcs as the first step in bringing the machine dziban offline in favor of vcs, which has much more local drive space and can backup to the archive.
- Configured bosco as a Condor submit host. Details of the configuration can be viewed by LIGO sysadmins here: https://vcs.ligo.caltech.edu:447/wiki/wiki? Bosco_As_Submit_Host.
- Stood up new wiki's for the AdvLIGO procurements group and a seperate one for their Q.A. subgroup.
- Began customizing the Oddmuse wiki code for general use. Porting automatic user identification and better uploaded file management code which I previously wrote for the related UseMod wiki.
- Began investigating the configuration and module structure of the Twiki wiki.
- The usual certificate management duties.
(Erik Espinoza)
- Upgraded mail antispam and antivirus.
MIT
(Fred Donovan)
- Finishing up kickstart docs.
- Got serial rs232 console from ldas-kickstart to nodes (to access bios) working (minicom).
- Waiting for l620-c13 cables for thumper.
Hanford
(Greg Mendell)
- I have patched LDG 4.7 to continue to automatically get the VDT CA certificate bundle during the LDG Cient/Server installation following a change in the VDT CA certificates distribution policy. For more information, see the 09/18/2008 entry in the News section here: http://www.lsc-group.phys.uwm.edu/lscdatagrid/.
General Computing (Wallace)
MIT
(Fred)
- Finishing up po's for end of year.
- Setting up some new systems that arrived.
- Working on dtt,dataviewer etc setup for visitor office machine.
- Misc. printer, display (font), e-mail issues.
Livingston
(Dwayne)
- Worked a few more procurement items.
- Work on new parts management system, database tweaks and UI development, circulated a new ERD and hope to have screen shots of some of the UI available by end of next week.
- Created new GC and mail accounts for new hire.
- Created GC account for an existing employee and helped them setup their ~{username} web space.
- SEC document share lost its lock database, had to recreate folder.
- Assisted a tech from Charter in troubleshooting our dropped packets. Problem appears to be dirty fiber connections at mid-station.
- Received two new laptops for users. installed various software.
- Helped another user migrate from POP on Windows to IMAP on Mac.
- Numerous usual/unusual user support requests.
- Cleared spam trap.
Hanford
(Larry
- Worked a few more procurement items.
- Worked a couple of server logistical issues out.
- Some minor user help with a new configuration for their environment.
- Minor work on the mail services.
(Mike)
- Continued work freeing up expired DHCP addresses.
- Work on tracking down a machine that is having some problems. This is in coordination with Shannon.
- Clear out mail spool with trapped spam messages.
Caltech
(Mike)
- More hardware upgrades on a few Engineering workstations.
- Worked with a Sun Engineer trouble shooting a hardware issue. This turned out to be a motherboard replacement.
- Trouble shot some application issues that were causing the terminal server "deneb" to crash. It looks like things are working again. I had to re-install Ansys from 32bit to 64bit.
- Setup new CIT user accounts.
- Called in Sun X2200. This is a motherboard replacement, IDE controller died. I swapped this server out with one of our backup X2200's. This server is now backup and running on the backup box until we get the other one fixed.
- Called in a Dell workstation that had a bad motherboard and power supply. Dell is sending out the replacement parts.
- Loading a new high end Dell server for ADVLIGO. I'm loading this to upgrade the ADVLIGO server in Hanford.
- Other additional misc. user support and sysadmin tasks.
(Veronica)
- LSC: Final work on the new ligo.org site. Installed the new site and archived the old one. The site is now in live mode. It has received positive feedback from LSC and LIGO management. Working on a slideshow for the new site. Updates of the MOU application, database of technical papers, other web updates.
- LIGO: Updates of the roster database, other web related updates. User support (Rudy - a scanner issue; Eric - web posting).
(Melody)
- DCC numbering in DocDB: Found out that documents associated with events still have the old document ID scheme. Need to fix this and do more testing.
- Working on allowing only certified (checked for completeness and correctness) documents viewable in the public web site.
- Working on getting Kerberos working with DocDb.
- Created a page in the SysAdmin wiki outlining the feature list for October.
- Discussed the status of the LAAC wiki with Nergis. Verified the state of the LAAC server after it had a hardware failure.
(Larry)
- Continual work on procurement related items. Reconciliation hit a few snags because of an account that was closed early. Placed orders for a few more workstations. Received and delivered a number of items and setup a couple of units that had arrived. Worked with Mike a little on a couple of new units.
- Setup a couple of new accounts. Modified a few accounts for people that have returned to CIT.
- Mike and I were able to assist in the EVO testing for next weeks conference in Amsterdam.
- More work than expected with the air-conditioning maintenance for the computer rooms and some of the offices. Mostly, minor issues but they did take a little bit of time to resolve.
- A couple of printer maintenance tasks and minor fixes.
- Worked with Mike on the logistics of getting LAACP server back on-line along with a couple of other server items.
- Regular user support and a few more meetings than usual.
Advanced LIGO and Supporting R&D (Shoemaker)
Advanced LIGO Management
From Carol Wilkinson
Project Controls
- Three Advanced LIGO Change Requests (ACR) are in process for review by the AdL CCB:
- ACR for changes in the UK delivery of BSC suspensions. Recent schedule changes need to be incorporated into baseline. Delay of several months on delivery has impact on time phasing of US and UK staffing levels but not on overall schedule. Also, UK provided promised training during development cycle instead of assembly phase. Expect an increase in US staffing costs of ~$100K.
- ACR for delay in PSL delivery schedule of 200 W lasers by 6 months. Uses schedule float and does not impact project schedule for installed units. Spares will be delivered after the install date.
- DAQ schedule update to accommodate just in time procurements.
Procurements
- Note: The procurement blackout reported for the end of September is for accounts that will end in FY2008 and does not apply to either Advanced LIGO project or development accounts.
- Vendors for the HEPI actuator assemblies, cross beam feet, and housings have been selected, with reqs to be processed. With the awards for actuator springs, geophones, and piers, these items represent $3.8M of the total HEPI costs for major procurements.
- Bid times for the SUS test stands and assembly tooling and the LLO storage/cleaning facility renovations have been extended to accommodate contractors who may have been impacted by hurricane Gustav.
- The RFQ for LHO shed renovations is being prepared.
- FMP assembly clean rooms vendor has been selected.
- A request for NSF re-approval of the assembly clean rooms award is being prepared – a result of the selected bid being under the pre-approved estimate by more than the allowed $125K limit. This occurred because the early estimate was based on the VEA clean rooms, which can be lifted with a crane. The final design determined that the assembly clean rooms do not need to be moved, simplifying the construction.
- The first draft of the Acquisition Plan for 2009 has been assembled, with approximately 20 procurements >$250K. A meeting to discuss the draft plan with Ann Miller, NSF grants officer and plan approver, was held on Thursday, September 18, with good results. The lessons learned on the 2008 plan were re-capped and several new feature of the 2009 plan were discussed. In particular, the ramifications arising because we are submitting future procurements with budget estimates and acquisition plans rather than the usual prepared contracts were discussed. We were able to clarify some processes and expectations.
Progress Updates
- The AdL Progress Status Report for the month of August was sent to NSF and posted to the DCC on September 14.
- Progress schedule updates for the month of September are due September 25.
Meetings & Reviews
- The next Monthly Progress Reporting Meeting will be on Thursday, October 9 at 8:30 AM PT. Subsystem leaders or their delegates need to attend.
- The Advanced LIGO Project Advisory Board will meet with LIGO managers at MIT on October 6-7.
Advanced LIGO
Systems
Dennis Coyne <coyne@ligo.caltech.edu>, Peter Fritschel <pf@ligo.mit.edu>, Calum Torrie<ctorrie@ligo.caltech.edu>, Matt Evans <mevans@ligo.mit.edu>
AdL Project-Funded Activities
Design Reviews: For a list of reviews, see the main AdL wiki page
- The BS/FM suspension mechanical/subsystem Final Design and Fabrication Readiness Review (FDR/FRR) continues. The committee meets this Friday to discuss answers to its questions and concerns.
- The PSL Preliminary Design Review (PDR) has begun. The committee has met to discuss initial questions. A face-to-face meeting with the design team is scheduled in parallel with the LIGO/Virgo Collaboration meeting.
Procurement Reviews:
- Reviewed the HEPI Housing bids and made a recommendation for award.
- Reviewed the LHO Staging Building Modifications specification and drawings for an pending RFQ.
Technical Review Board (TRB): see the TRB log
Vacuum Review Board (VRB): see the VRB log Configuration Control:
Design:
- Optical Layout: Mike Smith and Luke Williams have an improved recycling cavities optical layout which is now nearly final. They have determined that by rotating the ITM wedge (0.08 deg) to a vertical orientation, and setting the HR faces of the PR3, PR2, SR3 and SR2 optics vertical, the amount that the beam walks down is sufficient to allow for more placement range on the HAM optics tables (which is needed to accommodate uncertainty in the recycling cavity optic ROCs). The IO layout in HAM7 (H2 interferometer) looks to be rather crowded and options are being explored.
- Parametric Instability (PI):
- Dennis continued work on a finite element calculation to check the closed form solution of the test mass vibration coupling to the addition of dynamic, passive absorbers (pending document T080194-01).
- Calum has begun to crunch out modal calculations (thousands of modes) for use in Matt's code which determines good locations for passive dynamic absorbers to mitigate parametric instability.
- HAM1 (ISC output chamber) Isolation: Have preliminary results from a quasi-rigid body model which includes the pneumatic isolators and the directional stiffnesses of the bellows (which tend to short the isolators). Amplification at resonance and isolation at 10 Hz look promising. Next will come a compliant model of the support structure to see the seismic induced motion at frequencies > 10 Hz is acceptable.
Interfaces:
Modeling and Simulation
From: Hiroaki Yamamoto hiro@ligo.caltech.edu
COC (Hiro)
- Hiro is developing an algorithm to define a quantity which is more effective to quantify the mirror surface aberration to impose the cavity loss limit.
- This is based on the combination of (1) a high pass filter to enhance the short wave length region and (2) the gaussian weight to enhance the beam center.
SIS (Hiro)
- Working to quantify the effect of the beam size in the Michelson cavity.
Mechanical Simulation for Advanced LIGO (Sany and SLU team)
- Made another progress in e2e modeling of AdvLIGO Input Mode Cleaner. With the modified length and frequency control filters, the frequency noise on the Mode Cleaner transmitted light is at the required level (based on LIGO T020020) except for the triple suspension’s mechanical resonance at 1.2 Hz and 2.8 Hz, and a narrow frequency range of 5-7 Hz (this peak has not been identified yet) where the noise is a factor of two higher than the requirement.
Safety
From: David Nolting dnolting@ligo-la.caltech.edu
- Reviewing FMEA documents for BSC doc review…will have comments shortly for Dennis Coyne.
- Researching OSHA mandates for LHO and LLO regarding a few issues that were recommended to the LHO staff.
- Researching design specs for the back road bridge that goes over the BTE…trying to develop ma load rating to prevent over weight vehicles from crossing the bridge, which could prove catastrophic is the bridge fails due to excessive weight.
- Reviewing other FMEA and Haz-Analysis documents for various systems…old and new.
- Developing guidelines for Incident / Injury reporting for LIGO facilities…to include Laser Safety, Work Comp, and Regulatory Agencies.
Quality Assurance
From: Mick Flanigan flanigan_m@ligo-wa.caltech.edu
- Nothing significant to report this week, continuing to read up on PSL, BS/FM, and HEPI systems and get up to speed on the procurements and system functionality. Continuing investigation in defect tracking and calibration programs for AdvLIGO.
Facilities Modifications and Preparations
From: John Worden worden_j@ligo-wa.caltech.edu
- A vendor for the assembly cleanrooms has been selected. This procurement will be reviewed by the NSF as the selected bid is significantly below the original budget.
- From LLO - New driveway to warehouse is nearing completion. Concrete is down and clean up will begin soon.
Seismic Isolation
From: Ken Mason kmason@ligo.mit.edu
SEI Activities and Progress at LLO
- HAM-ISI commissioning was affected by Hurricane Ike, which created high seismic noise in a broadband region. We have archived this data so that it can be studied in detail later. This week we opened HAM6 and unlocked the OMC. Further ISI commissioning will occur with the OMC in an unlocked state.
SEI Project Activities
- A statement of work and drawings have been sent to procurement for the HAM HEPI pier and a package for the remaining miscellaneous machine parts. A kickoff meeting for the actuator fabrication was held on Thursday with Kineoptics. We have received and reviewed the quotes for the HEPI housing. A purchase order should be issued soon.
- We have started to upload the documents for the Single Stage HAM Preliminary Design Review to the AdLIGO wiki. Documents will be completed and uploaded by 9/26 and a review is scheduled for the first week in October. ~Ken M.
Suspensions
From Janeen Romie and Norna Robertson (currently in Glasgow)
(romie_j@ligo-la.caltech.edu, nroberts@ligo.caltech.edu)
Operations Work
HAM Suspensions for Advanced & Enhanced LIGO:
- HAM large triple blade characterisation is almost complete. These blades were shot-peened to correct the radii of curvature which were well out of spec. The results show that the blades are still not exactly as designed, but are close enough that we can use them to construct a prototype, using angled clamps. A standard worksheet has been developed to capture blade details and characterisation results. This will be very useful when we go into production.
- SUS staff visited a Ni plating vendor this week and we aim to send out blades for prototype Ni plating soon, after final clarification of the the various process steps.
- A draft proposal for a scheme for colour coding material in Solidworks drawings has been put together.
BSC Suspensions for Advanced LIGO:
- The BS/FM Mechanics Final Design Review is underway. The next meeting is on Friday 19th Sept when we will go over responses from the design team. In support of the review a document showing there is no need to damp the BS blade internal modes has been written and submitted to the DCC.
- A team from Glasgow and Caltech are currently at LAST for (glue) bonding work in preparation for the monolithic build - attaching prisms and bumper stops to the compensator plate, and magnet to the penultimate mass.
Project-Funded Activities
- A telecon was held to review and update the SUS risk register.
- A telecon was held to discuss and modify the SUS review schedule and upcoming SUS tasks.
- A telecon was held with LLO management to discuss upcoming project work at the site, staff for training on SUS assemblies and hire of personnel for assembly work.
- RFQs for quad assembly tooling have bean sent out. This includes everything except top stage tooling for which RAL are modifying the design and reworking.
Core Optics
From: GariLynn Billingsley Billingsley_G@ligo.caltech.edu
- Development -- Liyuan has ordered some parts to enable a smaller beam size on the CASI scatter instrument. He is also working on improving the absorption measurement on the scanner.
- The Compensation plate has been delivered to MIT/ LASTI with a gold ESD coating and a "hard" gold barrel coating. This process appears to have gone well, we will have a full report from MIT at the next optics meeting.
- Tinsley is on schedule to finish the pathfinder by the end of September as promised. Their subcontractor, ASML predicts meeting a final surface rms goal of .33 nm, a factor of 2 better than we had hoped could be obtained. nb. This is over the entire surface, not just the central 150mm.
- Calum has provided a draft write up on the recent work done on the Gravity Sag for the Beam Splitter http://www.ligo.caltech.edu/docs/T/T080233-00 Though some work needs to be rigorously thorough, indications are that the Gravity induced sag on the Beam Splitter will be negligible, of order < 1nm.
Project
- Caltech has issued the official proposal to Glasgow for taking on the suspension glass procurement responsibility. We would like to go out for quotes as soon as possible.
- Corning has provided a delivery schedule for the ETM, FM and RM glass (all glass ordered from Corning) and expects to complete the order by the end of October, 2 months ahead of our schedule.
- Heraeus reports that they are on schedule to meet their proposed deliveries, these are within our baseline schedule.
- All delivery schedule information has been sent to the project office so that reporting can be tied to invoices.
Auxiliary Optics
From: Michael Smith smith@ligo.caltech.edu
ADLIGO
Work Under Project Budget
- OPTICAL LAYOUT: Mike revised the ZEMAX layout for both the folded and non-folded IFO by placing a 0.08 deg vertical wedge on the ITMs and setting the PR3, PR2, SR3, SR2 surfaces perpendicular to the global vertical axis. This addresses ISC's request to minimize the vertical bounce to horizontal length coupling. Luke updated the Solid Works optical layout with Mike's new coordinates. Everything seems to fit within the chamber. Luke is concerned that the space on HAM8 for locating the IO components has become severely limited.
- COST BOOK: Mike and Phil are updating the AOS cost book and updating the 2009 procurement plan.
Work Under Operations Budget
- SLC: Ken and Mike are developing a damped suspension structure for the elliptical baffle. A prototype of the suspension will be built and tested.
- OPTLEV: Tara is expanding his analysis of the pointing requirement of the arm cavity mirrors for lock acquisition to include the power recycling and signal recycling mirrors. Preliminary results show that the BS optical lever is approximately half as stringent as the arm cavity mirror optical lever. Eric B. is investigating the use of a narrow band servo model with aggressive filtering of the optical lever noise for frequencies > 3 Hz to specify the minimum requirement for the noise of the optical lever transmitter/receiver system.
- ETM SUS: The ETM Suspension test-prototype is being made in the CIT Aero machine shop. They are awaiting delivery of a special magnetic iron plate.
Input Optics
From: Rodica Martin <rmartin@phys.ufl.edu>
ELIGO Commissioning
ALIGO Design
- Repositioned suspensions in aligo solidworks layout for vertical ITM wedge layout. (Luke)
- Designing vacuum friendly segmented DKDP ring heater. (Luke)
ALIGO Acquisition
- We gave green light to UF Processing to send RFQs to vendors for blanks for IO suspended optics and recycling mirrors 1 and 2.
- Continued reviewing polishing specifications for the mode cleaner mirrors. (Rodica)
Prestabilized
Laser
From: Peter King pking@ligo.caltech.edu
Operations
- Nothing significant to report.
Project
- The remaining parts for the pre-modecleaner servo to be sent to the AEI finally arrived. The delay was caused by the vendor information in Techmart being out of date, resulting in the purchase order FAX being sent into the ether. The vendor was Newark Electronics.
- Components to make the in-vac photodiode cable are in hand.
- Rod Luna has been chasing up some ITAR/EAR related number so I can sendsome photodiodes to the AEI for characterisation. This is in relation to the dark current measurements mentioned last week.
- The laser group met to discuss the reviewer's questions and our responses for the PSL PDR to be held next week.
Control and Data Systems
From: Rolf Bork rolf@ligo.caltech.edu
For additional
information about this report, contact Albert Lazzarini