Weekly Report for Week Ending February 4, 2010
LSC Issues (Reitze)
- A number of LSC members travelled to Rome last week (Jan 26-29) to participate in the GWDAW 14 meeting in Rome. There were approximately 50 presentations by LSC and Virgo members and presentations from people from the astronomical community as well on aspects related to gravitational wave searches. A highlight of the meeting was a round table discussion on the question of detection confidence, in which the participants (Jim Cordes, Neil Gehrels, and Francis Halzen -- all astronomers outside the LSC and Virgo) were asked to consider potential detection cases. The enusing discussion was lively, and indicated that a high statistical confidence level will be needed for the first detection.
- The S5y2/VSR1 all-sky burst paper was posted on the arXiv at http://arxiv.org/abs/1002.1036 .
LIGO Laboratory Administration (Lindquist)
PROPERTY ACCOUNTING (Luna)
From: Rod Luna <rluna@ligo.caltech.edu>
- Conducted e-waste disposal and filed a retirement form for a copier machine.
DOCUMENT CONTROL CENTER (Mak)
From Cleveland Mak <mak@ligo.caltech.edu>
- Assisted Rod with transporting the shipping crate for the Ergo Arm from the Machine Shop over to the Synchotron Bay area.
FINANCIAL SYSTEMS (Lindquist, Oracion)
From: Karl Oracion <koracion@ligo.caltech.edu>
SUBCONTRACTS MANAGEMENT (Arvizu, Champagnie, Jasnow, Marroquin, Salone)
From: Rudy Arvizu <arvizu_r@ligo.caltech.edu>
From: Steve Marroquin <smarroqu@caltech.edu>
- Reviewed and approved Supplemental Agreement, Mod. No. 5 to Support Services for contractor extension through 9/30/10.
- Issued purchase order contract to Advanced Thin Films for the purchase of Laser Beam Splitters.
- See Advanced LIGO Report Below.
From Derek Anderson
- Issued Change Order requisition for Support Services, 75-S062227.
- Setup various New Suppliers.
- Working on Change Order requisition for Think Resources, 75-S063574.
- See Advanced LIGO Report Below.
From Gina Salone
- Extending Contractor Contracts.
- Working with Karl on rollups for FY09.
From: Ed Jasnow <jasnow@ligo.caltech.edu>
- Continued to gather reviews from the LIGO staff participating in the development of the new P-Card system.
- Reviewed status of the closeouts of the FY09 contracts and P.O.s.
- See Advanced LIGO Report Below.
PROPOSALS, REPORTS, BUDGETS (Lindquist, Beckett)
From: Dave Beckett <beckett@ligo.caltech.edu>
- Have begun the monthly "highlights" report cycle for our end-of-January 2010 edition. I've sent out two announcements and received a couple of submissions so far. Due date for material is Friday, February 5th. I will send a final reminder shortly.
CHANGE REQUESTS (Lindquist)
- Change Request CR-100001 establishes the Operations budget for FY 2010. Revision B, which reflects the latest input from task managers has been uploaded to the DCC with an approval list.
HUMAN RESOURCES (Akutagawa)
From: Cindy Akutagawa <cindy@ligo.caltech.edu>
- The next Staffing Committee meeting is scheduled for Monday, February 8th.
- A Staffing Committee meeting was held on Monday, January 11th. The minutes and action items have been posted on the SC web page.
Quality/Safety (Nolting)
LIGO Lab Safety
Peter King:
- Emergency exit placards were distributed to those staff in Downs whom I could find. To those who have not received theirs yet, I will get to you.
David Nolting:
- The Caltech-LIGO Laboratory Annual Safety Audit is scheduled to be conducted on March 2nd and 3rd, 2010. A notice was sent to LIGO personnel who work at each of the lab areas on campus that are included in the audit process.
Computer Security (Singer)
- Wrote and tested (first version) of nmap scan reporting web site.
- Scheduled meetings for myLIGO rewrite.
- Held a bi-weekly status meeting with Albert.
- Attended CompComm telecon.
- Organized and Led Monthly Security Telecon.
- Gave feedback to Jonathan Hanks on secure document scanning to file server.
- Preparing for aLIGO DAQ review.
- Worked on project plans for security activities.
- Met with Stuart to discuss some project status.
- Discussion with RuthAnne Bevier about Caltech's plans for InCommon.
- Helped with DASWG problem involving 4M files in one directory.
LIGO Hanford Observatory (LHO) and Interferometer Operations (Raab)
Summary of Activities at LIGO Hanford Observatory (compiled by M. Landry)
- The on-site component of glitch-hunting finished up early this week. Summaries of the work are posted here, and here. Mitigation of some of these findings (e.g. sensitivity to work in the racks) has begun (see the CDS report below), after which we will revisit glitch sensitivity.
- The interferometer, now running at 20W, makes pretty good use of the additional 6W now available relative to the 14W prior to the commissioning break.
- In other work, i) the CDS NFS server hanford1 was upgraded (see CDS below), ii) a periscope mount on TCSX was tightened to mitigate noise around 120Hz (excess remains above and around 200Hz however), and iii) FFEPI weiner filters were tried on the fine actuators, but new transfer functions were deemed to be required after the filters did not improve low frequency performance between 0.1 and 10Hz.
Squeezer update (S. Dwyer, L. Barsotti, N. Smith, D. Sigg)
- We have ordered super polished beam splitters. The order of dichroic splitters should be placed within a week. A squeezer meeting was held to talk about the integration of the OPO at MIT. A draft specification for super polished OPO mirrors has been circulated. We hope to share some of the coating runs with the SHG mirrors. We modified a demodulator to provide a wider bandwidth. Some of the squeezer "slow" loops have 100kHz bandwidth. We started to realign the SHG loaner from AEI and are continuing to work on mode matching solutions.
CDS (V. Sandberg)
- Hardware and Electrical Engineering
- We undertook an investigation of the integrity of the ITMY OpLever cabling. Testing was inconclusive. We will watch this system for intermittent and noisy cable problems.
- As part of the DetChar glitch investigation, we looked at WFS1 RF cabling to see if the one-pin LEMO connector might be a suspect, possibly with the wrong size collet on the connector. This did not seem to be the case. Looked at the connector on the board as these have been in service a long time and perhaps they had broken away from the board. It did not appear to have any obvious problems. We tightened the connector and re-installed it.
- Finally as part of the glitch hunt it was found that tapping on the PZT Driver board would cause glitches. Rich Abbot had identified the potential fix for this. Capacitor C26, a surface mount 300V ceramic cap, was lifted from one of its pads and a wire was used to attach it to the other pad. This mechanically freed the ceramic from pc-board induced strains of the piezoelectric ceramic dielectric.
- Modified the BSC temperature sensor box to allow better use of the VMIC 3123 ADC boards range. The original full scale range of the box was 2V so just millivolt changes per degree F and we were sitting at .6 Vdc out of the box. Increased the gain to 10 allowing us to be at 6.8 V. out of the 10V range of the ADC. We will adjust the database when the Hanford2 changes are complete.
- We have scheduled a teleconference Thursday with a vendor regarding AdLigo DC power supplies.
- Work continued on the Pump stations for HEPI.
- The BSC test stand was relocated to the Staging building. And a new IMac was installed as an interface to it. The IMAC will allow the assemblers to pull up dwgs and interface with the test stand. Final field cabling will happen Thursday.
- Changed the 100 ohm resistors on the output of TT1 coil driver to 430 ohm metal oxide resistors in an attempt to further reduce DAC noise.
- Software and Computing
- Cleaned up the CDS NAT router rules with Abe. Had meetings with Abe regarding IDS and port scan procedures and report handling.
- Working with Richard installing an iMAC into the staging building clean room area for use with the BSC test stand.
- Replaced the CDS NFS server hanford1 (Sparc, Sol9, UFS, 1.9TB, hardware raid5) with the new NFS server hanford2 (amd, centos5.3, XFS, 12TB, software raid6). Main problems seen are due to hanford2 being a copy of the tape backup machine rather than of hanford1 (hanford1 crashed when being copied to hanford2) and so old files are making a reappearance. About 60% of the way through moving all NFS clients to the new server. Some will require IFO shutdown and will be deferred to next Tue maintenance.
Outreach (D. Ingram)
- Delta High School , the Tri-Cities' new STEM-focused high school, brought the entire student body of 100 enthusiastic and inquisitive freshmen to LHO for a field trip on 2/1/2010. M. Landry, F. Raab and M. Sakosky provided technical staff interactions for the visit.
LIGO Livingston Observatory (LLO) and Interferometer Operations (Giaime)
Enhanced LIGO and the S6 run (Valera Frolov):
- The interferometer time was divided between the detector commissioning and science data taking last week. The bns range now exceeds 14 Mpc during nighttime with 10 W input power.
- The HEPI feed forward commissioning finally resulted in reduction of the DARM control signal by a factor of 3 in the microseismic frequency range 0.1-0.3 Hz. So far only the Y direction seismometers (both LVEA and Y end) are used to feed forward to ETMY HEPI as it was found that the corner Y seismic motion is the largest contributor to the DARM motion. The PRC isolation was also improved earlier this week by an additional factor of 2-3 by using the feeding the LVEA seismometer Z signal to the RM HEPI X direction. The observed improvements agree with the predicted noise reduction based on the optimal Wiener filter calculation..
- The ETM coil driver noise was measured in the presence of the large DC current. One of the ETMY coil driver channels showed an order of magnitude larger excess noise as compared to the rest of the ETMX and Y coil driver outputs. If this excess noise is confirmed it will be a significant contributor to the DARM noise. The investigation will continue in the upcoming weeks to establish if a faulty part is responsible for the excess noise.
- The HAM6 ISI transfer function comparison before and after the damping struts showed a significant attenuation of the OMC cage resonances as designed. The HAM6 ISI blend filters (between the position and inertial sensors) were redesigned to produce a better performance at low frequency.
- The sidebands of the 60 Hz line in DARM were investigated. The coupling was found to be mostly due to the first tip-tilt mirror angular motion. It was demonstrated that both the 60 Hz motion and the sidebands can be suppressed by feeding back the OMC quad photodetector signal to the tip-tilt mirror. Either the QPD feedback or the magnetometer feedforward scheme will be implemented to reduce this noise.
LLO CDS (Keith Thorne):
- Worked on remaining issues after move to new main file server. Updated Linux clients to fix NFS mount settings to add file permission issue. Still unable to provide NFS access to an old VxWorks front-end (which is no longer in the readout) due to a security hangup.
- Tested latest GDS RPM release 2.13.6. Only major issue so far is with awg status in command-line tool. Also working on building GDS EPICS tools (ezca) locally to use updated 64-bit EPICS libraries.
- Updated IFO EPICS stats databases to correct OMC stat errors. Updated EPICS channels lists written to frame. Had to back out adding a large block of ISI EPICS channels (~1000) to frames because it caused timeouts on frame-writing on one frame-builder. Likely cause is the older hardware used for the frame file server on the framebuilder. New hardware has been available, but would require several hours downtime and assistance from SAMFS experts to complete.
- Worked with Tobin Fricke on OMC software update. Presently stuck on timing issue that is causing 16Hz on DARM_ERR signal sent to LSC front end.
LLO Education & Outreach (William Katzman):
- Conducted 2 on-site school field trip programs at LIGO, serving approximately 50 students. Kathy Holt Facilitated.
- Conducted one public group consisting of approximately 50 seniors, Kathy Holt Facilitated.
- Tien Huynh-Dinh, William Katzman and Amber Stuver attended the Assessing for Learning Workshop.
- Cristina Torres began updating the Women Scientist slide show. This slide show was originally made for last year's Sally Ride science festival at LSU. The slide show is scheduled to be shown again this year at Sally Ride science festival hosted by Tulane ( http://www.sallyridescience.com/festivals/10tulane0313 ).
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 also Advanced LIGO
Controls and Data Systems (Bork)
See also Advanced LIGO
40-Meter Interferometer (Adhikari)
No report provided.
Thermal Noise Interferometer (Black)
No report provided.
Monolithic:
- We have traded Angus and Liam for Giles and Alan. Angus and Liam were able to pull and test enough fibers for the first test hang (scheduled to take place either this weekend or Monday), tuning up the laser and exercise all of the auxiliary testing equipment.
- Matt is currently modifying the small clean room to give the welders enough space to fully access the suspension.
LASTI:
- Alex is out from Caltech with his magic wand eliminating our spurious excitation signals.
ISI:
- We have a full set of low blend filters developed that we are hoping to get installed and tested before the scheduled vent (2/10), need to keep our fingers crossed.
CIT Science Group (Weinstein)
Antony Searle:
- Derivation for LLOID SVD paper.
- Working on LIGO seminar presentation
Ben Owen:
- Started APS talk on Cas A search.
- Worked on r-mode interpretation paper for Cas A search.
- Started proposal for electromagnetic followup of continuous waves.
Vladimir Dergachev:
Drew Keppel:
Cristina Valeria Torres:
Stephen Privitera:
- Taught LLOID to down-sample templates on-the-fly to reduce memory requirements for template generation by a factor of ~5.
Kipp Cannon:
- Scimon shifts.
- Work on inspiral detection techniques for advanced ligo.
- Work on s5 string cusp search.
- Telecons: inspiral, inspiral-code, inspiral-highmass, daswg.
Joseph Betzwieser:
- I've been examining how close individual IFO followups of injections are to the coherently combined followups using multiple IFOs. This should help to weed out individual instrument lines, and act as a veto within the coherent followup.
Anand Sengupta:
- Wrote a 4 page note on the network coincidence code reparametrization procedure.
- Various Bug fixing in the coincidence code.
- S5 high mass paper writing assignment.
- Various odd edits to the Amaldi conf proceedings paper which has now been sent back to the editors in the final form.
Kari Hodge:
- Successfully running ihope!
- Submitted a SURF proposal.
- Fixing bugs in new MVSC plotting scripts.
Amber L. Stuver:
- Attending a workshop at the Exploratorium this week.
P. Ajith:
- Computed the "coalescence time" (time taken by a binary to evolve from one value of instantaneous GW frequency to full coalescence including ring down) of nonprecessing-spin binaries -- for LLOID.
- Worked on the Indo-US proposal.
- Working on improving the layout of the results page of the bilinear-coupling veto analysis.
Peter Kalmus:
- Kicked off review for third SGR search.
- Producing APS results for sgr gw nr modeling.
Gregory Mendell:
Laboratory Computing (Anderson)
LDAS Software Systems (Maros)
- This week has focused on getting the 1.18.0 release of the ldas suite ready for distribution.
- Several problem reports were closed and issues related to test programs core dumping after exiting main have been addressed.
LDAS System Administration
(Anderson)
Caltech
(Dan Kozak)
- Working on restarting S5 L0 migration from 9940B to T10KB tapes as I type.
- Currently 235 9940 tapes are in the state "fully migrated, data needs to be md5sum'd" and 591 tapes are ready to ship.
- Checked all S5 L0 framecpp_dump_objects output and only found the one (expected) truncated output file.
- Configured cluster to mount /archive/frames/MBH from x2200 so that it is writable.
- Got the replaced battery in the (formerly OldMeta) home4 6140 to report that it was good. Still trying to figure out how best to do the same on the /archive 6140s.
- Generated list of tapes for shelf storage at LLO.
- Started work on getting SIDvH1H2 files moved to /archive/frames/S5/SGWB.
- Did a _lot_ of work associated with Xavi's generation of A5 h(t) data.
- Had Phil take pictures for Dynamic Systems/Sun support; still working my way through the latest quote.
- Working on 4 bad files reported by Scott Koranda;they're odd in that only the first one requested will show up as a damaged file, the others don't stage but don't get marked damaged either.
(Phil Ehrens)
- Patched "old" TAR website to prevent caching of information that was not likely to be persistent.
- Ongoing work on new TAR website.
- Opened up access to dcc develoment tools and environment to Roy Williams.
- Created "melody" subversion repository for Eric Gustafson and Hiro Yamamoto.
(Josh Abadie)
- Monitored and managed the cluster.
- Attempted to solve user problems.
- Fixed the crash issue with condor_view on ldas-gridmon at CIT.
- Finished building the new ldr server.
- Returned several parts.
MIT
(Fred Donovan)
- Bates center had UPS & chiller issue on Saturday; "hard" power off of head nodes - several days. All machines recovered (ldas-homes1 needed boot archive rebuild). Still working on adding sata disks to 'mit' nodes; more puppet and nagios tweaking; both performing well. Added puppet status to nagios monitoring, working on getting rack thermal snmp data onto nagios; nodes are on daily yum update via puppet; tested network bandwidth 10GB link -- excellent to MIT campus, not impressive to Caltech, (esp. vi gridftp) need to investigate when Bates is more stable.
Livingston
(Igor Yakushin)
- MultiView is disabled on ldas-jobs' apache configuration for public_html.
- Ppowernow' option is disabled in BIOS on all the nodes.
- All the nodes are patched and rebooted; linux servers are only patched but not rebooted.
- Management network connection to 6140 is restored: for example, from qfs-nfs2 run 'sscs list -a 6140-1 controller'.
- All stdout and stderr from rsync server and push scripts at all the LIGO sites are redirected to /dev/null; the only logs that keep accumulating are those from capture scripts that measure latencies and are used in monitoring web pages.
- 100 tapes were ejected and 72 blank tapes were injected.
Hanford
(Greg Mendell)
- Fixed problems and filled in gaps in Level 1 RDS generation due to missing channels, and with LDAS hoft generation due to network problems.
- Verified that raw, trend, RDS, and LDAS hoft data are up-to-date in the LDAS archive at LHO, LLO, and CIT.
- The H1 LDAS C02 hoft data (frame type H1_LDAS_C02_L2) has now been generated from the start of the run, and continues to be generated in near realtime.
(Dan Moraru)
- Reset L700 tape robot after a couple of tapes became stuck over the weekend.
- Finished staging LHO L1 data onto nodes.
- At Larry Wallace's request, reconfigured sendmail at LL0 to use a local smarthost, as is done here.
- Fine-tuned Jumpstart configuration.
- Responded to various user support requests.
General Computing (Wallace)
MIT
(Fred)
- Nothing unusual to report.
- Working on adding automatic user creation on ligoimages for ligo.org authenticated users.
- Looking into single-sign on for ligoimages via kerberos; mit has arrangement re: recognized web certificates; getting certs for emvogil-2 and ligoimages.
- Trying out using vmware for Windows XP on EK's new centos workstation.
- Two laptop rebuilds.
- Trying to find lockdown solution for slave kdc that complies with ligo.org requirements.
- Modem script for notification from swiftoo1 to landline for events; looking into autodialers.
Livingston
(Dwayne)
- Support ticket with arkeia yielded a few possible solutions, the first of which failed to help. on to the next.
- Still troublshooting error in JIRA on part deletion.
- Issues with kantech system door mag-locks found to be tripped emergency open relay.
- Troubleshooting JIRA performance.
- Again had to restart JIRA due to lockup.
- Patched and rebooted a few servers.
- Assisted a user with virus cleanup.
- Installed CA Cert chain for our new SSL certs.
- Installed calcium web calendar behind SSL / LIGO.ORG auth.
- Added new subsystems and location to JIRA.
- Installed matlab and rdesktop on the cleanroom iMac image.
- Re-image and software installs on Rusyl's new laptop.
- Ordered a ClearOne system for the SB Conf room.
- Attended a few other meetings.
- Worked a couple small procurement items.
- Numerous usual/unusual user support requests.
- Cleared spam trap daily.
Hanford
(Jonathan)
- Added keytab to jupiter to allow LIGO.ORG on the main webserver -More scripting work with the email server. This will automate account setup, pulling the needed information from ldap.
- User support Mike Landry, Dick Gustofson, Rick Savage, Dale Ingram, Mary Kurts, Jennie Murdock, Doug Cook.
- Contacting oracle to expand our primavera license count.
- Worked with Cyrus Reed to begin syslogging the network gear.
- Upgraded ligo.org ldap replica to openldap 2.4.
- Worked on the network document scanner to make it easier for our users to save files to the network.
- Routine spam and dhcp work.
Caltech
(Veronica)
- Ongoing work on old DCC migration.
- March 2010 LV meeting: Website updates; e-commerce support. Attended a weekly OrgCom meeting.
- Updates of LIGO and LSC related webpages.
(Larry)
- Worked a number of procurement items. Ordered new projectors for conference use. Ordered the computers for the LIGO conference rooms. Misc. items ordered and delivered to various people. Working on a purchase for another Primavera seat. Presently waiting for a quote. This took some time since Oracle now owns primavera and our past contacts are no longer there. Assisted others in license purchases for misc. programs. Working on a group license for omnigraff, more people are finding it to be a useful tool.
- Finally was able to test out the 4G network on a digital modem. Even at 20% signal strength the modem provided data speeds 2-3 times faster than on the 3G network at full signal strength. The video conferencing went well. There were no dropouts and all looked pretty smooth.
- Assisted a couple of users with Comsol setups and license. Still tracking down a problem with one of licenses.
- Setup up a few new aliases and remapped some alias files for different people. This has made it to where people have more control over the lists.
- Worked on the logistics and did some of the leg work for a number of meetings that are taking place here on Campus and the LVC meeting in Arcadia.
- Setup and reset a number of new user accounts. Also, had to reset a number of passwords for people.
- Checked the monthly home account backup files.
- Tracked down various e-mail problems. The client pkgs. people are using need to be reset once-in-awhile, that appears to cleared up most of the client end issues.
- Multiple changes and updates were done on the DNS tables.
- More than usual meeting attendance. Had another impromptu P-card meeting. Things are still moving along on that front, hopefully, they will start announcing the move to the new system soon.
- Spam filter cleaning.
- Regular user assistance.
(Christian)
- GariLynn Billingsley - laptop screen keeps flickering. Called Kar from IMSS to replace motherboard adn screen on laptop.
- Sam Barnum - continued working with Sam to get Ansys 12 working from MIT.
- Toner cartridge replacements- 3flr W/B and 3flr Downs.
- Starting to test Altiris software.
- Working with Mike on testing Windows 7 with Solidworks.
- Testing network at the Arcadia hotel for the LSC meeting.
- Worked with Larry on testing out some of the projectors.
- Other misc.: Continued onsite software/phone support.
(Mike)
- Swapped out a bad hard disk on one of our critical servers "Muscida".
- Continued work on new webmail server.
- Ran end of month backups on all critical NTSRV's.
- Attended SolidWorks 2010 Conference.
(Melody)
- DCC: Usual user support. Met with Roy to give him an overview of the DCC software.
- myLIGO: Worked on displaying council delegate information in group managers' pages. Worked on the quarterly email sent to the group managers regarding their council delegate allotment and selections.
Distributed (Grid) Computing
R&D (Blackburn)
Grid Application Development
Einstein@Home on the OSG:
- Added support for fine-grain controls of IO and disk space requirements on $OSG_DATA to address issues seen on several sites.
- Updated E@OSG code on all OSG production resources to new version o Now submitting to 32 OSG productions sites, up by two.
- Averaging about 8,000 simultaneously running jobs on the OSG.
- Averaging about 150,000 CPU Hours per Day over the past week.
- For the past two weeks, E@H (and LIGO) are the largest single user of the OSG resources (19%).
Binary Inspiral Application on Grids:
- Troubleshooting error with LSCsegfind in older IHOPE codes.
- Wrote python script to execute gstreamer pipeline & analyze output o Computing gstlal_inspiral correction factors with this script.
- Compared performance of binary inspiral workflows runs on LDG and OSG ITB and OSG Production sites using SRM. The ITB site is similar in performance, the production site is O(10) slower for unknown reasons.
- Submitted one month's worth of data workflows on LIGO_CIT.
- Troubleshooting failure in data transfer dag with help from ISI.
Open Science Grid Integration & Validation Testbed
Open Science Grid Documentation Project:
- Prepare Content Management WS February 8-9.
- Add support for DOC_ROLE, DOC_TYPE, DOC_AREA.
- Define searches for different document roles, areas types.
- Create status table for documents illustrating the review process an document organization.
Grid Management
- Worked with new Korean LSC group to solve multiple issues with X.509 certificates and LIGO Data Grid Accounts.
- Wrote up year 4 (current year) status report on LIGO for the OSG Project Manager.
- Worked to resolve several remaining issues in the preparation and planning for the VOSS Workshop being held here at Caltech later this month. Chief among these was wireless access.
- Worked on monthly OSG Council Telecon agenda and meeting webpages o Wrote up a LIGO Applications status report for the OSG Executive Area Coordinators meeting next week that I've been asked to report.
- Putting together a panel and topic for the OSG Council to present at the OSG All Hands Meeting at Fermilab next month.
- Discussed strategy for increasing common code base in IHOPE codes between Duncan Brown and the Pegasus developers to avoid falling into subroutines when running on the OSG that are not exercised if IHOPE codes are run on the LDG. Need more work though to solve.
Advanced LIGO and Supporting R&D (Shoemaker)
Advanced LIGO Management
From Carol Wilkinson
Project Controls
For Micah Maples
- Finished first stage of the import of new install schedule into both the Primavera target baseline and current schedules. New install schedule takes into account single arm testing at Hanford and moving installation start date forward.
- Linked logic of the engineering/assembly baseline schedule logic to the new install schedule need dates.
- Incorporated schedule changes from change requests.
- Continuing to meet with subsystem leads for further installation schedule development.
For Dwight Carter and Lissa Girgis
- Drafted an Advanced LIGO Change Request to implement the new Installation Schedule.
- Supported preparation of the new Installation Schedule.
- Completed entry of the January schedule progress.
- Began drafting three Advanced LIGO Change Requests for approval and implementation in February 2010.
For Mary Kurts
- Updating PRISM with payments through January month end.
- Imported data changes from change requests into PRISM budgets.
- Importing schedule progress, actuals, and commitments for month end reporting.
Staffing
- Hiring continues for open project and design positions. An electrical engineer for AOS Thermal Compensation design effort has accepted our offer and started work 1/27. Interviews for assembly techs are proceeding well, with 3 offers made at Hanford and 1 at Livingston for the 7 open assembly positions at both sites. Twelve positions are actively being advertised. Open positions include the 7 assembly support techs already mentioned, 2 electronics techs with one at each observatory, an additional Systems Engineering mechanical engineer at CIT, a programmer to support the Inventory Control System at LLO, and shipping and receiving tech at LHO.
Procurements
For Alan Wilkins
- Traveled to Caltech to work with Contracting officers.
- Met w/ B. Abbott & E. Brown on In-vacuum cable procurements.
- Championed 5 contract modifications thru procurements.
- Reviewed SOW for BSC Large Steel Plates.
- Assisted in bid evaluation and vendor selection for SEI HAM crossbeam procurement.
- Championed completion of Bidders Conference action item list for FMP I/O tubes.
- Facilitating 25 procurements in various stages of progress.
- Working on NSF resubmission for approval of SI-151 Crossbeam award.
- Met with/ talked to AOS subsystem leads concerning revised procurement plans.
For Ed Jasnow
- Discussed the procurement of the core optics reference flats with the cognizant engineer, GariLynn Billingsley. Market surveys are being pursued to determine whether the procurement can be competed or must be sole sourced.
- We still have not heard back from LMA regarding the proposed Nondisclosure Agreement with them, Caltech, and the University of Sannio.
For Steve Marroquin
- Reviewed and approved Supplemental Agreement, Mod. No. 1 to Southbridge Sheet Metal to modify the HEPI HAM Support Piers.
- Reviewed and approved Supplemental Agreement, Mod. No. 1 to MDC Vacuum Products for the modification of slotted holes L4C vacuum pods.
- Reviewed and approved Supplemental Agreement, Mod. No. 1 to Next Intent Inc. for the electropolishing of Maraging Steel Springs.
- Drafting RFQ for SI-193 BSC Large Plates.
- Participated in the Weekly Seismic and HEPI telecom procurement status.
- DCC and Event Administration.
For Rudy Arvizu
- 2/3/10, issued Supplemental Agreement No. 2 (Mod-2) to MIT Subaward No. 75ADV-1085563, aLIGO project support under the direction of Dr. David Shoemaker. This Mod-2 provides allotment funding for FY2010 and FY2011.
- 2/4/10, Arland Tools & Mfg. was notified that they have been selected for the HAM Crossbeam and Crossbeam Connector Weldment (SI-151) pending NSF authorization. This procurement requires an NSF re-approval for a budget deviation that is outside the authorized range. The Letter of Negotiation will be submitted to the NSF on 2/5/10 and approval is anticipated within two weeks.
For Jacqueline Champagnie and Gina Salone
- Creating Event Pages for upcoming Procurements.
- Process Techmart Orders.
- Processing Change Order to Extend Contractor.
For Derek Anderson
- Issued requisition for SI-151 – Crossbeam Weldments - Arland Tool.
- Working on Change Order requisition for Think Resources, 75-S063576 (Chavez).
Invoice Administration/Admin Support
For Jennie Murdock
- Time Verification - Delay due to late entries by a few key system leads. New requirement entails hand keying entries, instead of download; extends entry time significantly.
- Invoice review and approval - Cleared up aging invoices exceeding 30 days, all pending invoices <30 to pay.
- Correspondence regarding Labor contracts between Leads and Procurements. Worked further w/procurements to prevent future delays in invoice approvals and payments.
- Follow-up with vendors regarding invoice detail and shipping documentation (serial numbers to be provided on packing lists) in order to streamline both receiving time as well as payments.
- Continued work with shipping/receiving individuals at all sites to help expedite processes.
For Ruth Winstead
Property Management
Rod Luna
- Cleveland and I assisted C. Torrie in moving a large crate for the ERGO arm from CES to the Synchrotron Lab.
- Assisted B. Taylor with shipping a FTRI kit to the UK.
- Assisted G. Traylor at LLO with making shipping arrangements for one crate to MIT.
- Assisted M. Phelps with making shipping arrangements for three Optics container to Coastline Optics in Camarillo, CA.
- Assisted G. Billingsley with receiving a fused silica blank form Heraeus.
Progress Updates
- Monthly progress updates from project subsystems are being folded into the current schedule and progress report are being generated by project controls. Reports are expected to be available by COB Monday, Feb. 8. Variance reports are due by COB on Feb. 9.
Meetings & Reviews
- The next Monthly Progress Reporting Meeting will be on Thursday, February 11, at 8:30 AM PT. Subsystem leaders or their delegates need to attend.
Advanced LIGO Systems
From: Calum Torrie <ctorrie@ligo.caltech.edu>
- Ergo-arm: The refurbished ergo-arm is now ready for MIT. Un-edited videos showing its use are now available on the DCC, LIGO-G1000095-v1. The ergo-arm will leave for MIT on Monday.
- Quad mock up: The quad mock-up is now suspended. It can be viewed via a web-cam at http://131.215.114.242/view/index.shtml.
- Systems layouts: Ed and I have been working with Andy Stein to create updated layouts of the HAM and BSC tables. This effort is progressing well and we now have updated HAM layouts. Work is ongoing on the BSC ISI layouts. Ed, Scott and I have also been working with Luke Williams on defining the items still required from IO. This effort is progressing well and we have a defined set of actions.
- Optic fixtures: Kurt and I have been working with COC on the various fixtures required for the optics.
- Opto-Mech meeting: We held another opto-mech meeting this week. Topics covered included SW and PDMWorks items as well as updated LIGO templates and material lists. We also went through the workflow for using PDMWorks and the DCC for LIGO drawings. A new e-mail list has been created for the opto-mechanical meetings and for SolidWorks announcements and it is hoped this now covers all SolidWorks users working on advanced LIGO.
Modeling and Simulation
From: Hiroaki Yamamoto hiro@ligo.caltech.edu
Static IFO Simulation (Hiro)
- A new version of SIS, 1.5.0 has been released, and is placed in a public place for download. This has the fast focusing cavity simulation code implemented and runs 10 times faster for the coupled cavity simulation. Optical path length calculation is done better now, and SB resonance frequency in the Michelson cavity matches with the analytic calculation.
- The requirement of the astigmatism of RM3 was calculated and the result was presented at the COC meeting on Feb. 2nd. Baffle design is on going.
- Worked with Muzammil to study the effect of the imperfect ring heater. A package has been prepared on the LIGO GC computer so that Muzammil can run the simulation by himself.
Safety
From: David Nolting dnolting@ligo-la.caltech.edu
- The aLigo Safety Engineer facilitated a meeting on 2/4/10 with the Clean & Bake Team for LHO to assess the progress on the standard operating procedures for the equipment for both LLO and LHO. Mark Lubinski at LHO created SOPs for the Large Parts Washer, Air Bake Over, and Large Ultrasonic Parts Cleaner.
Quality Assurance
From: Mick Flanigan flanigan_m@ligo-wa.caltech.edu
SEI:
- Reviewed the issues of the GS13 welds with the team on Monday, and we have a few paths forward here. One is that we will ask that all the welds be put through NDT (x-ray) to provide the necessary confidence in the welds. Next it looks like we will ask them to provide a better weld grind and polish, as well as better surface finishing. We will also send out the units at LLO to a local NDT shop. As far as the liquid that was present in the pods, we are still looking into this. Opinions from the suppliers is that it was DI water leaching out of the seams during shipment, small amounts not removed by nitrogen spraying. The polishing shop will now bake the parts for 30mins at 250deg F to eliminate this. However reports out of LLO are that the substance felt more like mineral oil or something more viscous than DI Water. Plans are being worked to do a possible bake and RGA analysis. Lastly, it has been determined that prior to any pods shipping out of the vendors, we will perform an in person visual inspection. This also applies to the L4-C pods as well.
COC:
- Gari was informed of a defect on ITM-04, however it appears to be within acceptable parameters. I will be compiling the exception report data on the ICS system as a defect on that part, for historical reference.
IOO:
- Supporting UFL this week in getting several of the optics polishing and coatings contracts wiki sites built. Will be meeting with Rodica Friday this week to finalize the polishing sections, and will hold contractor training in the next week or so on use, security, uploading files.
PSL:
- Participated in the FDR for the PSL team, need to get together the correct documents for the QA portion of this, and work with Benno and others on the spares plan. We need a few more details on how determinations were made on criticality and availability long term for spares. Another issue we will look at is long term shipping and storage containers, ensure these survive on a shelf in the proper environment until commissioning.
ICS:
- Job requisition for a JIRA/Java developer is posted, and hope to have the help onboard soon to continue driving out small bugs and enhancing the feature set of ICS.
- We had a couple of server locks again this past week, requiring Dwayne to reboot the system. Preliminary reports are that when users create a load and leave the load open for long periods of time on their computer screen, the server seems to cycle their connection. This breaks the load build process. Dwayne and Appfire are looking at this, as well as the other bug causing deleted part records to linger in the system.
- Spent time with the Columbia team this week training up on the use of ICS, prepping them for inputting all the circuit boards and chassis into the system, attaching test plans and results, and how to perform shipments, modifications and defect reporting. Will now follow up on the receiving end of this with the CIT team, receiving and assembling the boards, shipping to the sites, further testing.
Facilities
Modifications and Preparations
From: John Worden <worden_j@ligo-wa.caltech.edu>
LHO:
- Crane inspections this week at the staging building and out buildings. LVEA cranes will be done at a more opportune time. Three ISI spring posts were brought over to the OSB vacuum bake oven and found to be wet under their AL foil wraps. The resultant water staining requires a rewash prior to bake. One of the negatives of avoiding solvents - more care will be needed to dry parts before wrapping.
LLO (Rus):
- We have received the proper RGA setup for the new bake oven. It has been attached and baked with scans anticipated on Thursday. The original RGA setup has been sent back to SRS for retrofit and when returned will be used for the leak test chamber. The failed turbo pump for the RGA on the new bake oven has been replaced. The broken one has been sent back to Varian for replacement.
- The load in the older bake oven passed RGA and was removed on Monday.
- This load included over 4000 helicoils for SEI. The oven was reloaded and should be ready for empty and reload on Friday so that we can bake parts over the weekend and be ready for RGA testing on Tuesday.
- Pending good RGA scans on Thursday of the new bake oven, we expect to load it on Friday and bake parts over the weekend.
- The air bake oven was unloaded on Wednesday. All parts were sampled for cleanliness and then packaged. Those samples have been sent to JPL. The air bake oven will be reloaded with an aluminum load either late Thursday or early Friday so that it can run over the weekend.
- I have added Doug Lormand to the clean & bake group to assist Augie in cleaning parts and loading the ovens. He is available for two weeks prior to going back on shift.
Seismic Isolation
From: Ken Mason kmason@ligo.mit.edu
aLIGO Project Activities
SEI Activities and Progress at LLO:
- Assembly of the first HAM ISI structure has started this week! ~Celine
SEI Activities and Progress at LHO (JimW, EricA, JeffB, TravisS, JodiF, HughR):
- Staging building nearly ready--Crane inspection just done and thorough cleaning on-going.
- HAM ISI Large Plates arrived planning to load large-air-bake oven early next week (SUS in Loading now).
- Should get first set of Support Posts in VBO-A Friday.
- Waiting for the Lavallee Stiffener components--main slow down for true Assembly start--will begin Sub-Assemblies next week.
SEI Electronics Design and Fabrication:
- Sam has stuffed one of the new HEPI Pump Servo chassis. Testing should begin today.
- Gary has started the ordering process for the aLIGO HAM ISI Interface boards, parts, panels, and chassis.
- Sam has been stuffing lots of GS-13 socket boards. He's gotten 70 of those done so far.
- Sam has also been stuffing and testing more GS-13 preamps and GS-13 in-pod cables.
- The reworked HEPI L4C cables have shipped, and should be here next week.
- Dinkar is still working on the design for the connector that can solve the clearance issues on the GS-13 pod's in-vacuum wiring.
- I continue working on developing the HEPI Pump Servo epics interface.
- I have finished the design of the Anti-Alias personality boards for the HEPI and HAM ISI systems. I'll send them out soon.
- I have counted up the Anti Alias and Anti-Image chassis that we'll need for all seismic systems. A subset of those are already on order so we can use them on the test stands. ~Ben
Single Stage HAM Procurement and Build:
- Issues with receiving of parts, clean/bake and assembly readiness for SEI at LLO were addressed last week. The site needs some additional help in getting ready for advanced LIGO and that is now being addressed especially in the area of how to process parts through clean/bake and maintain a schedule. ~Stephany
- The first set of maraging steel springs has been completed and shipped to LLO.
- The next two sets are scheduled to be shipped to LHO on March 3rd.
- MDC has agreed to do an additional machining operation to provide a cleaner void free outside surface on the GS-13 pods.
Two Stage BSC Design and Procurement:
- The BSC large plate procurement is underway -- the SOW has been approved and is with procurements at Caltech. Seismometer pods will follow at the end of this week. ~Stephany
Suspension
From Janeen Romie and Norna Robertson (romie_j@ligo-la.caltech.edu, nroberts@ligo.caltech.edu) reporting on the work of the SUS team: Anna Aitken, Jeff Bartlett, Mark Barton, Betsy Bland, Derek Bridges, Doug Cook, Jay Heefner, Matt Maxwell, Mike Meyer, Bobby Moore, Janeen Romie, Norna Robertson, Travis Sadecki, Danny Sellers, Josh Smith, Gary Traylor
Operations Work
HLTS Prototype:
- Derek is finalising assembly work preparatory to suspension and OSEM install: this is expected by the end of the week. Minor differences between masses in SolidWorks and actual parts are being investigated. Mark is visiting LLO next week to work with Derek on testing and characterisation.
- As-built drawings finished for every part of the prototype.
Blades:
- Blades from one of our vendors are at the heat treat shop and will be done next week. A small problem in the software on the blade test stand has been found but should be fixed fairly quickly.
Project-Funded Activities
HSTS:
- Anna created the bill of materials for the HSTS. Mike is updating some of the drawings to get them ready for release to the DCC.
- Betsy is working on the wording of RFQ.
Quad and Beamsplitter Work Including Monolithic:
- Various Glasgow colleagues are visiting LASTI this week and next – preparations ongoing for test weld hang and subsequent monolithic work. Arrangements made for LIGO staff to travel to support monolithic preparations.
- Mark did a first draft of a procedure for the LASTI monolithic rehang.
- Mark worked on debugging the equilibrium-finding code in his Mathematica toolkit to support Giles’ work on variations in d values at Glasgow.
- Norna and Doug are working on hazards analysis and SOP for LASTI work, based on existing documentation.
- Doug is assembling list of parts needed for welding setups at the sites.
- Betsy has put together list of what is in the clean and bake queue for QUAD and BS/FM loads at LHO.
AOSEMs:
- Norna and Rich met with Zach to discuss program of further work to investigate excess noise seen in the first article AOSEMs. A set-up for tests is being prepared in CDS area.
Procurements:
- Updated delivery date for OMC SUS machined parts is Feb 26th.
Electronics:
- Stuart Aston (Birmingham) is continuing investigations of noise in BOSEMs. He sees large variation in amount of epoxy used within the IRLEDs. Not clear if this is a factor. He is also investigating alternative devices.
- Peek monofilament has arrived – will be vacuum tested.
General:
- Mark created a wiki with guidance for using the new photo-sharing tool ResourceSpac.
- Mark is reviewing a document on calculating thermal noise in Virgo to see if it is consistent with our approach.
- Janeen and Bobby attended Solidworks World this week.
- Useful short summary document of names/types of suspensions put on DCC (E1000024).
Prestabilized
Laser
From: Peter King <pking@ligo.caltech.edu>
Operations:
- Nothing significant to report.
Project:
- Gradual improvements are being made to the simultaneous lock of the laser to the reference cavity and analyser cavity. Some deadband activity in the software temperature stabilisation loop is suspected to be due to not setting enough precision in the temperature sensor EPICS record. Otherwise the lock is reasonably robust.
- However as the software tidal loop adjusts the VCO control voltage to reduce frequency offset between the two cavities, large fluctuations in the reference cavity transmitted power are observed. These are suspected to be due to pointing fluctuations caused by the AOM, or power fluctuations from the VCO. Both are being investigated. The spectra measured so far are flat and appear to be shot noise limited. A number of tweaks will be carried out. These involve replacement of one or two optics to increase the light level on the analyser cavity and minimising the beam pointing into the reference cavity.
Input Optics
From: David Tanner <tanner@phys.ufl.edu>
eLIGO Commissioning:
- We began investigations into the input beam jitter contributions to the current interferometer noise. (David F.)
- We measured the rms ITM beam spot motion to be 400 um, measured the rms ETM beam spot motion to be 1 mm, diagonalized the ASC yaw drive matrix, took measurements for a better optical lever calibration, and made cables and breakout boards necessary for installing a tip-tilt in front of WFS1. (Kate)
aLIGO Design:
- The new ham Aux suspension (formerly SOS) design is now almost defined, and we are producing the drawings for a prototype which could be ready in few days. (Giacomo, Luke, Prem)
- Also, we finished ordering the necessary material for the TCS experiment. We have also been discussing with Caltech about the new ring heater design/test plan, and with a possible vendor about different solutions. (Giacomo, Muzammil, Guido)
- We have been working on determining the effect of heater non-uniformity on the test mass ring heater. Working with Hiro Yammamoto, we have created surface profiles that were used in FFT to determine the effect of heater non-uniformity. The results will be summarized soon. (Muzammil)
- We are also looking into alternatives for the RH design. Specifically, we are looking into vacuum compatible insulator/heater coatings. (Muzammil)
- We are working on a detailed IO power budget spreadsheet for "as-built" components (or a close estimate based on specifications if data are not available yet). (Rodica)
aLIGO Acquisition:
- We had a progress meeting with REO to the discuss status of polishing the small recycling mirrors. Everything is on schedule. We expect the first polished optic to be ready in May, and the entire lot be finished at the end of July.
- We received a progress report from Gooch&Housego on polishing for PMMTs. Work is progressing on schedule. The concave mirrors should be ready to be delivered middle of March, and the convex parts beginning of April.
- We are working on coating specifications for small power-recycling and signal-recycling mirrors. (Rodica)
- We are providing information, documentation and vendor contacts to Mick Flanigan to create an optics tracking wiki for the IO. (Rodica)
Core Optics
From: GariLynn Billingsley <Billingsley_G@ligo.caltech.edu>
From Liyuan Zhang:
- With Bob, focused on building the 3rd contamination cavity. The cavity has been locked by using the fast feedback control in short term (~10 mins) with a good output power. Underway is understanding and fixing two situations, the dumped power at the input beamsplitter keeps changing and the slow feedback control doesn't work properly.
From Rand Dannenberg:
- Dealing with spec & testing procedure for CSIRO gold coating soldering.
- Plan put together for CSIRO handling of Gold coated optics without damage to gold. Cost ROM is $39K for the development of a fixture.
- Call to CSIRO.
- LMA call cancelled.
From GariLynn Billingsley:
- C1000158 is a request for quote for the large aperture reference optics to be used in aLIGO metrology.
- LMA reports that there is no apparent increase in the absorption of Heraeus 3001 material after annealing. Heraeus had cautioned us that there may be a problem in this area. Similarly there was concern that Ion Beam Figuring (used in Advanced LIGO polishing) might increase the absorption of fused silica, this is also shown to not be a worry; see LIGO-T1000032.
Auxiliary Optics
From: Eric Gustafson <egustafs@ligo.caltech.edu>
Thermal Compensation System (Aidan Brooks, Phil Willems and Mindy Jacobson):
- The coating specifications for the Hartmann sensor (E0900489-v5) were submitted to the vendor. They have returned a preliminary analysis of our requirements based on their current coating designs that indicate that either the coating designs will need to be modified or the Hartmann sensor requirements eased. Measurement of the transfer function of the ring heater (current to radiated power) are continuing.
Photon Calibrator (Rick Savage)
- The laser vendor reported that they are unable to deliver the 1063.5 nm laser with the quoted output power of 1.5 W. They are now quoting 1.0W and we have requested additional information. We made a quick test of an "optical follower" servo using a SRS 560 preamp with limited success. Started working on tracking drawings numbers as a project metric.
From: Michael Smith <smith@ligo.caltech.edu>
Work Under Project Budget
OPTICAL LAYOUT:
- Mike repositioned the TCS steering mirrors in H1 and H2 to mount to the HEPI "ring".
Work Under Operations Budget
SLC BAFFLES AND BEAM DUMPS:
- The prototype suspension for the ISI table and HEPI "ring" is being fabricated by the CIT shop.
- Heidy has revised the diameter of the manifold/cryopump baffle to mount within the suspension mounting ring in the manifold tube and to clear the blade springs. She added stiffening rings to the baffle and calculated a weight of 290 lbs for the entire suspended baffle assembly.
- Mike redesigned the blade springs for the new blade spring radius and payload.
VIEWPORT:
- Mike completed the Viewport PDD, and placed it in the DCC, as well as on the aLIGO AOS WIKI.
Control and Data Systems
From: Vern Sandberg <sandberg@ligo-wa.caltech.edu>
PROJECT
aLIGO SUS:
- LLO: Carl continued investigation of questionable noise performance of monitor boards on the Production UIM on hand at LLO.
- LHO: Filiberto repaired one channel of a UIM Monitor card. It had suffered the "blown AD797 front-end problem".
aLIGO DAQ:
- Procurement review in process, with meeting scheduled next Wednesday.
- Continued work on DAQ test system software:
- Added testpoint/excitation channel definition capabilities to the code generator. These can be placed anywhere in the model ie no longer required to use a filter module part to provide these features.
- Continued testing with a single task which performs all I/O for all real-time applications on a single computer. For this test, 9 ADC modules and 2 DAC modules have been installed. This task:
- Provides all ADC values as independent EPICS channels, viewable from auto-generated EPICS screens.
- Provides all ADC channels as full 65KS/sec testpoints (limit of 2MByte/sec total rate).
- Performs duotone timing checks.
- Runs in total time of 8usec.
- For this test, four real-time applications are running as "slaves", synchronized to the I/O task.
Facilities:
- CDS Electronics racks and DC power facilities location under discussion at LHO.
GDS-Controlroom Tools:
- Finished check-in of gds-2.13.6 source into the local svn repository. Continuing work on foton file import, copy/paste, and file handling issues. Investigate filter coefficient creation in foton from design strings to understand how it's done. Preparing a software requirements outline for aLIGO foton. Investigate how to build ezca tools from gds sources on x86 architecture.
aLIGO AOS (TCS, OpLev, etc.)
- AOS(Oplev): Fiber coupled super luminescent diode controller driver boards have been out for fabrication and it will be here next week.
aLIGO SEI:
- Sam has stuffed one of the new HEPI Pump Servo chassis. Testing should begin today. I continue working on developing the HEPI Pump Servo epics interface.
- I have finished the design of the Anti-Alias personality boards for the HEPI and HAM ISI systems. I'll send them out soon.
- Gary has started the ordering process for the aLIGO HAM ISI Interface boards, parts, panels, and chassis.
- Sam has been stuffing lots of GS-13 socket boards. He's gotten 70 of those done so far. Sam has also been stuffing and testing more GS-13 preamps and GS-13 in-pod cables.
- The Re-worked HEPI L4C cables have shipped, and should be here next week.
- Dinkar is still working on the design for the connector that can solve the clearance issues on the GS-13 pod's in-vacuum wiring.
- I have finished the design of the Anti-Alias personality boards for the HEPI and HAM ISI systems. I'll send them out soon. I have counted up the Anti Alias and Anti-Image chassis that we'll need for all seismic systems. A subset of those are already on order so we can use them on the test stands.
aLIGO ISC: