The LIGO Executive Committee Agenda for Monday, Frebruary 12, 2007 will be:
(Meeting time: 10:30 Pacific Time)
1. Announcements
2. Programmatic (Marx)
- President's FY08 budget requestJay
- Finance—Phil and Florence
3. Comments on weekly report
4. LSC and Data Analysis (Saulson)
5. LIGO Lab Operations
- Administration (Lindquist)
- Sites (Raab, Giaime, Shoemaker)
- Commissioning (Fritschel)
- Optical and Mechanical (Coyne)
- Control and Data Systems (Bork)
- 40m (Weinstein)
- TNI (Libbrecht)
- LASTI (Ottaway)
- Lab computing (
Anderson
)
- Science Group (Weinstein)
6. Enhancements (Adhakari, Zucker)
7. Advanced LIGO (Shoemaker)
8. Change Control Board/Technical Review Board Session as needed
- There are no open change requests
Site and other Business Issues:
Special Announcements: The NSF included Advanced LIGO in their 2008 budget request, a very significant step forward for Advanced LIGO. It is the result of the hard work, but more importantly the high quality of the work, being done on Advanced LIGO and in the LSC more generally.
Weekly Report Highlights: LHO operating routinely above 15 Mpc!
The S3/S4 known pulsar paper was posted to gr-qc and announced to GWIC. We are now waiting for two weeks for comments, and then will submit the paper to the journal. The S4 stochastic radiometer paper is about to be posted.
We have opened registration for the March 19-22 meeting of the LSC and Virgo Collaborations, our first joint meeting. Please register soon, if you haven't already.
Shortly after this week's meeting of the Virgo Steering Committee, Virgo and the LSC will formally appoint the joint Data Analysis Council, and also the joint Run Planning Committee. Those are the two bodies that will, when the time is right, make a recommendation to the two Collaborations to start data sharing between the LSC and Virgo. We hope those two bodies will start discussions soon.
LIGO Laboratory Administration (Lindquist)
PROPERTY MANAGEMENT (Luna)
>From: Rod Luna <rluna@ligo.caltech.edu>
- Assisted Rolf Borke with the shipping and the preparation of a Commercial Invoice for US Customs clearance for two PCI-X Analog to Digital Converter Boards, two Digital I/O Modules, two Anti-Alias Filter Chassis, two Anti-Image Filter Chassis and two 6" Ribbon Cables to the Max Planck Institute for Gravitational Waves in Germany.(B. Willke). Account Number LIGO2.ADV-1-OAIC.LIGO2ADV.
- Created and sent out equipment Inventory list for LHO.
- Continued working on LIGO's Equipment Inventory @ CIT.
- Worked with Gina Salone and Annie Walden on creating a supplier expense report to reflect LIGO's monthly overhead cost for Caltech and the Observatories.
- Tagged and created Property records for one Dynamic Signal Analyzer for Rich Abbott @ CIT.
DOCUMENT CONTROL CENTER (Turner, Mak)
>From: Linda Turner - turner@ligo.caltech.edu>
- Met with Larry from Safety to review concerns in the new storage room. There were aisle width and egress issues. A new layout that satisfies these safety concerns was devised and submitted to PMA for signoff.
- Continued to go through unmarked engineering drawings and either numbering or archiving as pre-LIGO. About 50% have been labeled and readied for storage.
- Continued working with Bill Tyler on creating a database of incident reports from the sites, MIT, and Caltech. Received all known incident reports from Livingston and have sorted them by year and date and compared them to those already on file in the DCC. Still awaiting more incident reports that Bill has and those from MIT. We are on target for completing at least the Hanford and Livingston reports by mid-February.
BRIDGE CONSOLIDATION OF LIGO LABORATORY PERSONNEL
- Assisting Eric Gustafson on beginning the coordination of LIGO consolidation into W. Bridge following construction of the new astrophysics laboratory on the south side of Califnornia Blvd. Set up bi-weekly status meetings with Albert and Eric to meet the April 1st deadline for a preliminary plan to PMA. Worked with Eric on first things needing to be done to get a picture of space needs. Working up floor plan models to use for notes and people placement. Additionally, will add up raw square footage to be given up against anticipated new square footage assigned in Bridge. This should be completed by Friday, February 9th.
>From: Cleveland Mak <mak_c@ligo.caltech.edu>
- Continued to process MOU's.
- Processed/packaged about 30 empty printer toner cartridges for recycling.
- Prepared all non-electronic "P" documents for scanning.
- Scanning Update - Scanning of old CBI Assembly Records Pkg files is complete. Scanning of all non-electronic "P" files has begun.
Update to Current Document Management System (Lindquist)
The committee did not meet Friday, February 2. The next meeting is scheduled for Friday, February 9.
FINANCIAL SYSTEMS (Funaro, Brambila, Kaufman)
>From: "Funaro, Catherine" <Catherine.Funaro@caltech.edu>
>From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
- Completed mod 38 to GSI and submitted to vendor.
- Revised modification 27 to REO and re-submitted to vendor.
- Completed the change order to Varian to cover pending invoices.
- Completed the renewal of the hardware maintenance support for Year 2 for LLO.
- Completed change order for Eric Myers and submitted to vendor.
- Working on the LSU modification.
- Completed the modification to Northrop Grumman and submitted for approval.
- Re-routed the revised modification to MIT for approval.
>From: Florence Kaufman <fkaufman>
- Completed report for FY2007 Operations and R&D as of the end of January and posted the report on the network.
- Responded to requests to provide additional information for some of the information on the Payroll Distribution Confirmation Reports that account managers have been requested to review and approve, before final approval by Jay Marx.
- Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport. (For passwords contact Florence)
SUBCONTRACTS MANAGEMENT (Jasnow, Salone)
>From: Gina Salone <gsalone@ligo.caltech.edu>
- Dennis Coyne, Ed Jasnow, Florence Kaufman, and Gina Salone met to review the status of invoices for the HAM-SAS prototype effort.
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
- The two contracts for the Pathfinder optics substrate polishing are being assembled and are expected to be released next week. The two contracts are to CSIRO and QED Technologies.
PROPOSALS and REPORTS (Lindquist)
A proposal for Continuing Operations (2009-2013) is due to the NSF this summer. We will meet with the NSF for discussions next week. I will be publishing a proposed outline and assignments.
CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)
- The LIGO change control board recommended approval of CR070001 on Monday (February 5) to add funds to pay for the HAM SAS prototype effort. I have prepared minutes (LIGO-M070026). The original signed copy of the change request with concurrence emails will be retained in the LIGO DCC.
- There are no open change requests.
HUMAN RESOURCES (Akutagawa)
>From: Cindy Akutagawa <cindy@ligo.caltech.edu>
- No report. The next staffing committee meeting will be February 26, 2007.
Quality/Safety (Tyler)
>From: Bill Tyler tyler@ligo.caltech.edu
The last LIGO campus safety audit (40M Lab) is scheduled for Friday.
The LDAS Computing and LIGO Server Facilities safety audits were conducted earlier this week. The audit team was pleased to find no significant safety or "housekeeping" issues during the audits.
We are working with the Advanced LIGO Project to establish a consulting contract for high power laser safety support.
LIGO
Hanford
Observatory (LHO) and Interferometer Operations (Raab)
Summary of S5 Activities at LIGO Hanford Observatory (compiled by K. Kawabe)
Peaceful week with solid performance after successful commissioning break.
Duty cycle (Thu Feb/1 to Wed Feb/7) of H1 was been 92.9 percent with 14 - 15.5 Mpc inspiral binary range. For H2 it was 92.8 percent with 6 - 7 Mpc range.
Summaries: Range and Duty Cycle update. Tuesday maintenance summary.
Highlights from the LHO elog are listed below:
Outreach:
- D. Ingram took the "LIGO Road Show" to Omak in north central WA on 1/31 and 2/1. 350 Omak students in grades 6-8 interacted with a dozen portable hands-on LIGO-flavored activities dealing with light, wave behavior and resonance.
LIGO
Livingston
Observatory (LLO) and Interferometer Operations (Giaime)
S5 Run (Igor Yakushin):
- After the commissioning work was over, L1 came back online on Thursday02/01/07.
- Most of the week the microseismic noise was low, except for Sunday-Monday, and the inspiral range was 14-14.5 Mpc. Duty cycle for a week was 77%, on some days exceeding 90%.
- Rolf and Lisa tried to diagnose the glitch associated with the autoburt script but could not reproproduce it. Perhaps, after all the reboots during the commissioning it got fixed.
- HVAC at the X-end was repaired on Wednesday.
- Two channels were added to L1ADCU_PEM.ini: L0:PEM-ITMY_TEMP and L0:PEM-ITMX_TEMP. However, the attempt to add them to the frame was not successful so far.
- The home directory of the Condor cluster was doubled in size to 20T.
Outreach (John Thacker):
- Prepared and delivered programs for two school groups (over 130 middle school students.)
- Prepared and delivered one Teacher Professional Development program on Saturday (22 teachers).
- Prepared one program for a high school astronomy club visiting from Little Rock, AR
- Prototyped one new exhibit on Infrared radiation.
- Worked on strengthening two school activities.
LIGO computing and network security (Roddy)
--------------------------------------------------------------------
Reported under General Computing, see below.
General computing and LDAS admin (Giardina)
---------------------------------------------------------------------
Reported under General Computing, see belowReported 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)
LIGO:
- Attempted to track source of IFO noise introduced when CDS EPICS backups are performed at LLO, normally once each hour. Even when running concurrent, multiple backups, we could not get noise to appear. So, for now, we will continue to perform backups only when not in science mode.
See Advanced LIGO
40-Meter Interferometer (Weinstein)
No report - Alan is traveling
Thermal Noise Interferometer (Black)
No report
LASTI (Ottaway)
No report
CIT Science Group (Weinstein)
______________
Kent Blackburn
TCLGLOBUS
Mary Lei and Michael Samidi are still setting up
ldasbox1.ligo.caltech.edu (64-bit machine) instead of
ldasbox4.ligo.caltech.edu (32-bit machine) for running valgrind
to investigate LDAS managerAPI coredumps using Globus threaded
libraries.
Still investigating GSI authentication failure on Opteron systems.
Michael Samidi is still working on providing more details to Globus
team for Bug #4946. Tested with OpenSSL from command line and it
seems there is certificate misconfiguration.
OpenSSL memory leaks within Globus Toolkit 4.0.3 has been addressed
in Bug #4743 (http://bugzilla.globus.org/globus/show_bug.cgi?id=4743).
Michael Samidi will find out if this bug will be included in Globus
Toolkit 4.0.4 (est. March 2007)
GRID APPLICATION DEVELOPMENT:
Testing several OSG sites (PSU, Purdue_ITaP, UWMilwaukee, Fermilab and
STAR_BNL) for meeting the second OSG milestone, running LIGO workflow
on OSG with 100 or more CPU slots for one week.
After running 2 days (Feb 5 - Feb 6) with 100 or more CPU slots, all
workflows died at 7 PM on Feb 7, 2007. This could be due to bug
discovered in the latest Condor version (6.9.x) installed on
osg-itb-se.ligo.caltech.edu.
Still testing full HIPE at LDG CIT cluster with job clustering with
a new Pegasus property to enable sysmlinks and third-party trasnfer
at the same time. Submitting HIPE workflow to ldas-grid is still
causing high load on the gatekeeper. This is due to the workflow is
submitted through Condor-G. Michael Samidi is still working with
Karan Vahi to investigate the problem.
Completed moving LIGO GWFs from CIT repository to UCSD SRM server.
Still working on SRM problem at UCSD with Karan Vahi.
The problems are submitting srmcp jobs using Condor-G fails
and missing a single quote surrounding SRM URL in the submit
script.
OPEN SCIENCE GRID VALIDATION TESTBED
Attended VTB telecom related to CEMon problems
OPEN SCIENCE GRID INTEGRATION TESTBED
Validated one additional ITB sites with nanoHIPE application.
Installed Condor 6.8.4 after bug appeared in Condor-G 6.9.1 on
submit host. Upgraded TclProxy host to be a second Condor-G
submit host to allow more jobs on the OSG.
Reorganized ITB Twiki SiteValidationTableITB052 to segment
sites based upon capabilites and functionality.
Continued to test new fixes provided by FNAL developers of
CEMon.
Worked with Michael Samidi and Kent Blackburn to refine
submission sites for OSG milestone.
Successfully tested ws-gram interface on LIGO-CIT-ITB.
Attended weekly DASWG, ITB and Pegasus telecoms.
______________
Duncan Brown
- Continued to generate more numerical waveforms and work comparison
between these and post-Newtonian templates.
- Found and fixed bugs in the LAL 3.5pN inspiral phasing code.
- Constructed a set of data quality flags that can be used to perform
a blind hardware injection challenge on the 1 calendar year BNS run,
as a prelude to the real blind challenge.
- Worked with Drew on S5 1yr search.
- Worked with Diego in implementation of physical template family.
- Helped Patrick with some xpipeline work.
- Release a new version of glue.
______________
Gregory Mendell
I have generated more "fscan" spectrograms and spectra of channels
during times from last month's commissioning period when Robert
Schofield connected ripple boards to various power supplies. The latest
elog is here:
http://ilog.ligo-wa.caltech.edu/ilog/pub/ilog.cgi?group=detector&date_to_view=02/02/2007&anchor_to_scroll_to=2007:02:02:18:40:03-gmendell
Laboratory Computing (Anderson)
LDAS Software (Maros)
- Development efforts to make the diskcache API robust against hung NFS file systems have reached the system testing stage.
- Modifications for handling multi-line resources concluded and PR#3098 has been closed.
- Version 4.13 of the file utility has been restored to address issues with coreWatch (PR#3111).
- Issues were discovered in the metadataAPI when trying to use DB2 9.1. Problem report 3118 has been filed describing the issues.
- System testing of LDAS was done using version 1.8.446. The only errors currently seen on ldas-dev deal with the datacondAPI not receiving all needed data before starting the processing of a command. Work is currently underway to solve this issue.
LDAS System Administration (Anderson)
Caltech
(Dan Kozak)
- Got new 6140 RAID arrays configured to the point that we now have 2 test filesystems.
- Cleaned up after 2 ldas-cit crashes. Pulled a CPU board and called the problem in to Sun.
- Got Kevin Flasch set up with an account on samtest for LDR Solaris testing.
- Did a samgrowfs on /home at LLO (and did the prep work for it).
- Ejected tapes at CIT for shelf storage.
- Started working on the problem of lots of 'E' (error) tapes at CIT (ongoing).
- With Phil's help, traced fibres from 6th floor machine room to the 6th floor fibre patch panel. Figured out what was connected to what at the fibre patch panel in Bridge. Thus was able to get opterondata-dev connect to fibre channel (/scratch still not mounted, tho').
- Got replacement 3510 controller from Sun.
- Spent some time trying to figure out the source of our RLS error messages...ending up handing this off to Kevin Flasch.
- Gave Ben a list of bad md5sums on h(t) data to republish.
- Worked on the swap of ldas-dev & sunbuild (to try to deal with ldas-dev crashing all the time).
(Phil Ehrens)
- Numerous grid cert related tasks.
- Removed two exec calls from the LDAS code.
- Various stevedoring tasks between Millikan, Bridge, and Synchrotron.
- LSC MOU Web interface research, including face-to-face meetings with Albert Lazzarini and Dorothy Lloyd.
- Wrote most of the ipfilters ruleset for the 3 interface machine ldas-test. NFS rules still need to be set up.
- Began implementing c++ layer exception based wait loop Tcl extension for the LDAS datacond API.
- Cleaned up some network configuration issues on some Sun boxes that did not have search domains defined at CIT and LLO.
(Erik Espinoza)
- Built 2.6.19.2 kernel for LHO.
- Built 2.6.19.3 64-bit kernel for testing.
- Upgraded ngc101 and frog to latest FC4 patchset.
- Assisted with ganglia migration.
- Rebuilt frog from scratch.
- Put condor 6.8.4 on ldas-sw, copied over config files.
- Setting up tests for frog/ldas-condor to use the ldcg condor.
- Put together definitive list for nodes w/ micron.
- Upgraded ldas-grid to PostgreSQL 8.2.0.
- Testing and research for tzdata/DST change.
- Set up ldasadm1 for 32-bit kernel testing.
MIT
(Fred Donovan)
- Added 2 750G sata to data11, to back up ata raid array (completed)
- Rebuilt one of the 3ware raid 5's, restoring now.
Livingston
(Igor Yakushin)
- The Condor home file system was doubled to 20T.
- Made amendments to replication database change proposal and discussed them at DASWG telecon.
- So far no more ldas-grid crashes after the downgrade of the kernel. However, it is too early to tell if it really helped: sometimes the interval between crashes is couple weeks.
(Dwayne Giardina)
- Made some additions to the cluster_mon summary script, changes aren't visible in the UI yet.
- Updating ganglia on ldas-gridmon and all nodes, doing a full update on gridmon to help test patches for DST.
- Ejected tapes for storage, placed all remaining blank tapes in storage cabinet in server room.
- Tape eject and shipment.
Hanford
(Greg Mendell)
- I have done some more work on the next release of the LIGO Data Grid (LDG) client and server distribution. Otherwise, my sys admin time has been spent keeping LDAS services running at LHO.
(Ben Johnson)
- Finished initial implementation of shared-memory dataFind. On my workstation 4,376,829 type R urls can be generated in 9 seconds. A short query of 1800s (57 URLs) takes 3 micro-seconds. This does *not* include PFN ranking, which still has to be performed in Python.
- I have republished and/or newly published h(t) several times this week.
- I am researching how to build an NDS client. There have been requests for NDS on ldas for the past 4 years that I have been here, and I have recently gotten a request for a NDS perl module from one of the operators. Looks like most of the code is written, I just need to get it to work.
- The home filesystem was grown to 20TB withouth incident; though one of the new JBODs is still reconstructing its RAID, due to my "global spare" test this past Monday.
- Concurrent with the home filesystem grow was an upgrade of ldas-grid's kernel to 2.6.19.2 (custom built by Erik Espinoza). The box has not frozen up so far.
- Powered up 24 nodes that were down due to last week's power failure; this time the three power strips are on different phases on Panel B. We will measure the current usage on each circuit next Tuesday morning.
General Computing (Wallace)
MIT
(Fred)
- Swapped tintagel (new disk, install xp prof, etc) for the present solidworks machine, as mb on tintagel has pci-e; this is re: upgrade video card (w advice from our sw var) to handle bigger assemblies.
- Some housekeeping, consolidating, etc. usual sys adm (user accounts, wireless, etc.) rc'd esata enclosure
Livingston
(Dwayne)
- replaced a dead monitor on an SEC exhibit
- LSC meeting preparation, gathering A/V and network requirements
- GC backup was stalling, restarted software, added new tapes, all is well
- CUR cleanup
- user having issues printing while connected to VPN. have a couple of possible solutions but have yet to implement either.
- spam filter settings changes
- spam filter cleanup
- other usual user requests and support
(Shannon)
- Saturday, the switch in the communications closet died. Came in Saturday morning and replaced it with a temporary switch. Have a replacement on order from Foundry as the old was was out of warranty. The switch failure caused some issues with wireless and machines in the office areas of the corner station.
- Ran some Nessus scans of machines at LLO.
- Worked a bit when time permitted on the vulnerability assessment for LLO.
- Looked into the specs on some wireless APs for GC from Foundry. Need to compare to the HP ProCurve units that Christine has evaluated.
- Analyzed some traffic that was a bit suspicious (destined for what appears to be a broadcast address offsite). Still looking into it.
- Went to the LSC location Wednesday to look at the hotel and talk to the network folks to see what will be needed to accommodate 200 people with laptops. Still looking into this. It may be an issue.
Hanford
(Christine)
- Finished setting up the server that will act as the clone of the main file/NIS+ server. The first of the 730 GB disk raid systems is set up and is rsync'ing the home directories from the main disk system.
- In setting up the new disk system, discovered that the SCSI PCI cards I purchased are not compatible with Solaris 8. I bought LSI-R cards and only LSI-S cards work with Solaris 8. I was able to borrow the correct card from CDS, now I have to arrange to exchange my wrong cards.
- Started patching all the "guest" computers, servers and network equipment for the daylight savings time changes.
- Worked with Ben to get the Control Room GC Fedora box updated with lscsoft and cvs. Keith Thorne wanted to use it to demonstrate how to use Matlab to read/analyze frame files. Although it works on the Linux box, Keith ended up demonstrating the procedures on a GC Solaris computer as this was aimed at the Operators who more often use Solaris boxes.
- I'm trying to get SSH mail tunneling working on a user's MAC laptop. I found a GUI that is supposed to make the tunneling easier to set up, but I think that the encryption used is not compatible with the NIS+ encryption. Also working on NFS mounting the user's home directory from the Solaris server to his MAC laptop.
- Still working on a problem with excel files being sent by Netscape through email arrive corrupted.
- I'm still waiting for the Dell technician to come out and replace the heat sync and power supply on a new laptop. I've been waiting 3 days for what is supposed to be next business day on site service. They seem to be under staffed in Eastern Washington.
- I have the new Cisco router configured and will test it during next Tuesday's maintenance period.
CIT
(Veronica)
- LSC: Ongoing support of the March meeting. Installed an online registration tool. Later, modified the database and did re-scripting according to the changed specs. Configured the online credit card payment gateway and integrated it into the website; the setup has changed since last time and the changes are not yet documented, so this took a fair amount of troubleshooting. Worked with campus Finances on troubleshooting the setup configuration between the gateway and the merchant service provider.
Updates of various LSC-related webpages. User support.
- LIGO: Mailing lists updates. Website updates.
- CaJAGWR: Website updates.
(Bruce Sears)
- iLog Maintenance: (0.5 days); General iLog maintenance (user adds, keyword adds, systems work, etc.)
(Christian)
- Norna Robertson- Installed and configured MS Project 2003.
- 40 Meter- Mike and I replaced bad network printer.
- The fans in the display case needed to be replaced.
- Continue testing and learning about MS Vista and Office 2007.
- Worked on the Spam Filters with Mike and Larry.
- Other misc.: Continued onsite software/phone support.
(Larry)
- Continual work on procurement issues. Assisted Gina with a number of items. Still trying to get the phone company to correct some of their billings.
- Working on a notebook procurement and a few more LCD monitors.
- Working with PMA and others on the moving of equipment and related items to different rooms.
- Mike and I have started moving computer equipment to different locations. Assisted in getting a number of items turned over to CIT transportation. Worked with the CIT engineering group and PMA on the changes being made for the computer rooms.
- Started working on the logistics of getting machines patched for the new Daylight Savings Time change. There are a number of people working on this but it is still surprising the number of people that still are not aware of this.
- Worked on the computer rooms, mostly rearranging items.
- Working on computer related reports for Kent. Still quite a bit to do for him.
- Moving accounts over to the new system. Still a few minor tweaks.
- Stuart discovered a locking service not running properly on the server but that has been resolved.
- Worked with Veronica and Bonnie and the upcoming LSC mtg. to be held in Baton Rouge.
- Debugged a couple of different computers for the endusers.
- Worked the spam filters. Still over 10K/day of bad e-mail getting removed on the server but a lot is still getting through.
- Assisted a couple of users with cleaning up their e-mail files.
- Various accounts and aliases have been modified or removed.
(Mike)
- Working on building a web server. Loaded the latest Solaris 10, and configured Apache with SSL. This is to update and replace ligo.org.
- Started moving users over to our new Home account file server.
- Worked on a few of the NTSRV's that are still running Server 2000. We need to access these servers remotely due to some recent hiccups. We are now able to maintain these servers as well as the 2003 servers remotely.
- Additional cleanup work in both server rooms getting ready for a safety inspection. It looks like we passed.
- Continued work on mail servers plus searching for false positives on the Spam Filters.
- Worked on moving my Eudora pop3 email over to IMAP. Eudora is not that mail tool to use for IMAP, especially if you have a lot of mail boxes. Thunderbird is my option to use with IMAP, Eudora has to go away if you switch users over to IMAP.
- Worked with Larry in moving equipment.
- Replaced printer in the 40M.
- Other misc. user support and sysadmin tasks.
Advanced LIGO and Supporting R&D (Shoemaker)
The NSF included Advanced LIGO in their 2008 budget request, a very significant step forward for Advanced LIGO. It is the result of the hard work, but more importantly the high quality of the work, being done on Advanced LIGO and in the LSC more generally.
Advanced LIGO Systems
From: Hiroaki Yamamoto hiro@ligo.caltech.edu
Modeling and Simulation (Hiro Yamamoto)
e2e weekly meeting
- Sany Yoshida explained his progress of implementing the modal control of the triple suspension.
- Mark Barton, from LASTI, suggested various issues to make sure the e2e based implementation is doing the same thing as the SIMLINK based model.
Static IFO simulation (Hiro)
- The effect of BS in a machelson cavity was studied and it is concluded that the BS loss due to finite aperture and flat contribute in each path, i.e., the loss ~1000ppm in the AR side with 37cm diameter is a serious issue.
- Melody fixed a few issues of the database code in the model.
Modeler - e2e simulation engine (Hiro, Bruce, Melody)
- Bruce is cleaning up the UserDefinedPrimitive code and documentation.
Mechanical Simulation for advanced LIGO (Sany and SLU team)
(Quave)
- Evaluated and modified results from LSC and frequency filters in triple cavity model (for AdvLIGO Input Mode Cleaner) and attained similar results to original theoretical results made by P. Fritschel. I am now setting up and installing a VNC server on our local machine (on campus).
(Kinchen)
- This week I have been running models isolating the triple pendulum system. The purpose is to analyze the reactions of our current feedback filter to the yaw motion of mass three. To do this I have limited the disturbing force to the actuation force in our model. My intention is to observe the response of the feedback filter to the motion of mass three exclusive of any other external force.
(Yoshida)
- Continued e2e modeling of the modal control for the AdvLIGO triple suspension Yaw DOF. By measuring the control loop transfer function, optimized the dc gain of the control filter. This makes the system much more stable, and mode 1 (three masses yaw in the same direction ) is clearly damped. However, the damping performance of mode 2 and 3 (the lower/middle mass yaws in a different direction) is not satisfactory. Further analysis will be conducted.
ALFI : e2e front end (Melody, Bruce)
- Melody and Bruce are working to write a documentation how the UserDefinedPrimitive implemented. This covers the end user documentation as well we the lowest level information how the code is written and work.
- Bruce fixed Alfi release creation script and other associated files such as the E2E key for the signing of ALfi jar files for the update to Java 1.5..
CDSPrestabilized Laser
From: Peter King <pking@ligo.caltech.edu>
- Rolf and I met with the SoCAL representatives of Beckhoff Automation. We discussed the issue of communicating with their proprietary TwinCAT software with real-time Linux and their field engineer suggested a solution that provides a clean break with whatever LZH provides and us. The task remains to read up on the tonnes of programming information about TwinCAT and purchase the additional interface hardware they suggested. After a period of time during which we familiarise ourselves with the hardware and a little with the software, the Beckhoff engineer said that they would come out and help us.
- I forwarded the first draft of the PSL safety plan to Benno, who made a minor modification related to the optical fibres for the pump diodes. It's by no means a finished article but at least is a good starting point, in my (biased) opinion.
From: Rolf Bork rolf@ligo.caltech.edu
ISC
- Got quotes for the costs of coating aluminum samples (4"X4" plates) with flame-sprayed aluminum. $65 per plate for Aluminum Nitride, $48 per plate for Aluminum Oxide. These coatings are candidates for improving the thermal properties of electronics enclosures in vacuum systems.
- Spent a lot of time working out the ISC budget. I believe I now have the right combination of numbers to reflect reality.
- Received ceramic ring heaters from Watlow Inc. that are to be used on the OMC thermal actuator.
- Working out details with the hermetic box manufacturer for in-vacuum DCPD enclosure. This type of solution will be useful for any party wishing to house electronics in a clean vacuum environment.
HAM SAS
- Recieved a late breaking requirement to provide computer controls for the stepper motors. We have purchased and received an I/O module for this and will begin work on the necessary software
Seismic Isolation
From: Ken Mason kmason@ligo.mit.edu
BSC Seismic Isolation Testing
- The new blade shims have been received. The installation tooling has been redesigned and modified to accommodate the new blade heights.
- The quote has been received for shipping costs to send the air bake chamber from Galli & Morelli to the Livingston Observatory.
- Laurent Ruet has completed the design of the actuator mounts to correctly position the actuators. The drawings have been checked and sent to a machine shop for quoting.
HAM single stage isolation system
- A meeting was held with HPD to discuss design requirement changes. These changes include access for the PSL beam through the lower HAM chamber port and to check the installation clearances when HEPI is installed.
- The design is 49% complete, HPD estimates that the total design phase costs will be 112% of the original estimate.
From: Brian Lantz BLantz@stanford.edu
Announcements
HAM contract status
- HPD is working on displacement sensor mounting, spring installation, and stage 0 deflection.
- had a good meeting with PSI on Monday and they will do a feasibility study on an actuator with bigger gaps, smaller force, and hopefully shorter envelope.
Progress on the BSC
- compliance measurements? The variance in the old measurements is not outside the measurement errors Trying again with 50 mHz drive AC meas now.
- h2 shim difference could be the stage 0 compliance or it could be rubbing
- In the stage 0 compliance, a factor of 2 more compliance in stage 0 is enough to explain the difference. This is not unreasonable, since there is only a 6x6 matrix to define stage 0, so local deformations of stage 0 can not be accurately modeled here if the displacement sensors are at a different location than the springs (which they are).
New shim installation
- The new installation is nearly done. There is not enough space to install spring on 0-1. We need to remachine the bolt. Long term a redesign is necessary, since the new bolt will only give about .050" of clearance.
- Stage 2 actuators in the wrong place, Calculations and redesign are done. Hope to meet talk with Ken Smith on Monday or Tuesday.
- 10:30 pacific, 1:30 eastern
- Ken to track the hours. Ken to review the drawings. Ken smith says he gets a different number than we do. Clearly, further work is required
- Moving the stage 1-2 actuators will make feed forward on force to stage 0-1 actuators more difficult tocompensate (not that we do this now, but it would be pretty cool)
- additional space cap sensors? look at quote. $1200/ module, $2800/ sensor includes cables. We will order the whole set.
- mock pod electronics - please get comments back to Ben today by feb 2.
- real pods at LLO - locker code, clean assembly, STS-2s? STS-2s not back yet. 1 at MIT now in a pod, but not tested. Need to make a STS-2 emulation box as well, Mohana will be working on this.LLO has 2 bad and 2 good. LASTI has one on the floor and one in a closet. (this is a run support spare)
- Shyang added some additional routines to the locker/ unlocker code to make the torture test automatic.
- Are there ways to automate the testing? Brian O' will look at a way to profile the current draw as a reliability gauge.
- We will incorporate the locking into the ISI interface board. Brian O/ Shyang/ Ben A will work on this.
- STS-2 breakout done
- cleaning - Rob Luna will be working with galli and morrelli on import/ customs for the air bake oven to be installed at LLO. Projected arrival in about 6 weeks Joe Hanson to be dealing with the crating/ cleaning MZ says to get some subs to install the ovens Allen and Janeen might be roped in to help get a sub. Allen and John are working on the ovens and cleaning.
- seismometer - recorded temp data from 2 nights ago saw an earthquake from indonesia MH is building the pressure sensing equipment. Graham reports that the alignment of the IFO is OK. Tarm is thinking about angling the Euler Buckling Spring and other ways to reduce the natural freq. Have a sketch of the EBS at angle.
From: Ben Abbott abbott_b@ligo.caltech.edu
All new activity since last weekly is written in red.
HAM-SAS:
Custom Electronics chassis: (# needed + #spares)
- LVDT Driver (2 + 1) -2 Installed the spare is stuffed, but needs boxing and testing
- LVDT Interface (2) Installed
- Stepper Motor Interface (2 + 1) - Installed
- Coil Driver Interface (1) - Installed
- QPD Whitening (2 + 1) - 2 Installed, 1 spare here, needs testing and boxing.
- QPDs (4 + 1) - 4 in electronics lab, 1 is just a bare board and I'll keep it for a spare board.
- Guralps Interface (1 + 1) - 1 installed, 1 built but untested.
- AA Interface Rev 4 (1) - Installed
- AA Interface Rev B5 (1) - Installed-AI Interface Rev 3 (1) - Installed
- Coil Driver (4 + 1) - Installed
- In-Vac Breakout boards (2) Installed
Commercial Electronics:
- Opteron Processor (1) - Installed
- Stepper Motor Driver (4) - Installed
- I/O Chassis (1) - Installed
- Power Supplies (2) - Installed
Miscellaneous:
- In-Vac Accuglass cables (13) - Installed
- Guralps cables - Specialty cables from Guralps Instruments Ordered 12/21 quoted a 30 day lead, but they now say that they should arrive 2/2.
- Special cable connecting the LVDT 25-pin Witness board connector to the 9-pin ADC connector - Installed
- The 5 L-COM cables that were short were delivered to Alberto last week. Marie told me that Riccardo came and picked them up after Alberto had left for the day. I assume that Riccardo installed them.
- The decision has been made to read back the stepper motor steps so we can keep track of the actuator position when we move the steppers. The first stage of this effort will be to move the motors manually via the front panel, and read back the RS232 signal that records the # of steps through the PCIX adapter module to a terminal window. The next stage would be to receive the joysticks from AML, and use them to move the motors. Stage three might involve actually controlling the motors from epics, and reading them back there also. This would take time, because we have no spares to use for the test bed for the controllers or motors. If a mistake could damage the in-vac motors, then we should avoid software development that isn't absolutely necessary.
- The RS232 to PCIX adapter board has arrived. I'll let Rolf play with it on Monday.
- OF the five coil drivers sent from Italy, two do not work. David and Alberto are seeing if the remaining two, unmodified coil drivers are operable and able to be modified to fit into the LIGO controls. Riccardo is probably going to ship the broken boards to me to diagnose and repair.
ISI:
- ISI Interface - (3 + 1) I continue to work on the schematic.
- GS-13/L4C Emulation Module - I've finished the schematic, and PCB. I'll send it off for fab soon.
- GS-13/L4C Control Module - I have started the schematic, and it should be done in the next couple of days.
- GS-13 Boards - (many) 15 boards came back from PCB Express. They'll get stuffed sometime soon, and delivered sometime thereafter.
- Coil Driver - (3 + 1) (Mohana) - The Coil Driver board has been stuffed and in test. The new interface board has arrived and been stuffed Testing of the entire chassis will occur soon. The metalwork has been sent out to Front Panel Express.
- STS-2 Emulation Module - Mohana is looking at requirements for this board.
- STS-2 Control Module - Mohana will start thinking about this module after she gathers requirements for the Emulation Module.
Suspensions
From: Janeen Romie <janeen@ligo-la.caltech.edu>
Enhanced/Advanced LIGO
- Attended the Solidworks World 2007 Users Conference and Exhibition in New Orleans on Monday.
Nothing else of importance to report.
From: k mailand kmailand@ligo.caltech.edu
Adv. LIGO
- The CES shop is continuing work on the LASTI tooling assemblies. The elevator linear drive setup should be ready friday, for a run test of the completed control circuit.
- I'm assembling the lift table and the 5 axis fixture, this task should be complete by 2-9.
- I'm making an assembly of a suspended cavity beam dump concept for Mike S. I have a sample piece of kapton wire coming 2-15, for a test of this concept.
- I have sketched a high resolution 3 axis positioning mechanism for Peter King for his laser assembly task.
From: Chris Echols <cechols@ligo.caltech.edu>
Output Mode Cleaner
- Design of the upper mass stage of the mode cleaner is finished and drawings for the parts are in development. Wire lengths have been defined, wire jigs have been prepared for assembly, and redesigned upper wire clamps (by C. Torrie) were added to the top level assembly. New clamp blocks for the upper mass stage are in the shop. Newly designed bolt-on upper blade risers (by J. Romie) are in the top level assembly as well.
Core Optics
From: Bill Kells kells@ligo.caltech.edu
This week, so far, :
- We are investigating the first high quality results from the new scatter scanning platform (that is new integrating sphere scattered light collection/detection). The results are definitely superior and will be giving new insight into the scatter conundrum.
- I have been developing the PI analysis further, to understand better what the consequences are of this mechanism. So far "worrysome" thresholds have been calculated, but not much interpretation of what they portent for actual ifo operation. It has just been assumed that one must (at all costs ?) avoid the thresholds ! But, e.g. do they generate excess noise sub-threshold ?? In the mean time there is a new paper for LSC review by Vyatchanin et al. which goes in this direction. I have been asked to (and am) reviewing this. Its much food for thought, not to mention a lot of work, given their style !
From: GariLynn Billingsley <Billingsley_G@ligo.caltech.edu>
- The polishing pathfinder evaluation committee has met and has recommended letting polishing contracts to ACPO (CSIRO) of North Lindfield Australia, and QED of Rochester, NY. This recommendation has been accepted by Jay Marx.
- General Optics reports that they are on schedule to delivery the LASTI ETM on the 28th of February.
- Updated costs for Advanced LIGO substrates have been provided to the project office. The most notable changes come from changing the Beamsplitter to Heraeus Suprasil 3001 (aka 311SV) and in increasing the thickness of the compensation plate.
From: Helena Armandula ahelena@ligo.caltech.edu
Adv. LIGO Coatings
CSIRO's gold coating on coated and un-coated fused silica substrates, as reported by Mark Gross:
- They have 'looked at' the samples with their microscope system and taken some photographs at a few known points on the surface. After gold coating they can come back to those points exactly and re-photograph them. However, they need to get a more reproducible way of positioning the sample in the TOPO device so they can get better before-gold and after-gold measurements - that is currently proceeding. Unfortunately, the TOPO is the domain of the fabrication folks and they are a bit stretched at the moment. Mark will talk to them to see if it can be put ahead a little further.
Adv. LIGO Mirror carrier
- Expected finish date is 2 weeks.
- Mock-up structure for "in situ" cleaning tests Is finished and in the OTF lab
Auxiliary Optics
From: Michael Smith smith@ligo.caltech.edu
SLC
- Ken Mailand is investigating the use of Kapton-coated copper wire for suspending the elliptical baffle, arm cavity baffle, and cavity beam dump. This material may provide enough damping to recover from earthquake events.
OPTICAL LAYOUT
- I am revising the non-stable layout. By returning to a suspended PO mirror for ITMX, similar to the BS PO, the BS wedge might be reduced to approx. 1.7 deg.
From: Phil Willems <willems@ligo.caltech.edu>
Enhanced LIGO Thermal Compensation
- I have been working with an engineer at II-VI Corporation to design conical optics that can convert our gaussian CO2 laser beams into donut mode laser beams with high efficiency. These could boost the efficiency of our TCS tables and so increase their output power. The first order designs already look pretty good but we are seeing how close these optics can get to what we think the ideal profile is.
TM Absorption Measurements at LLO
- I have left aside the spot size measurements to instead analyze the test mass acoustic mode frequency data Sam and Valera collected that week. The full analysis is not complete, but these data are much superior to the spot size data- they are free of input optic thermal effects and seem to be sensitive at the ~2ppm absorption level on the very first try. The data look very self-consistent.
Input Optics
For additional information about this report, contact Albert Lazzarini or Phil Lindquist