(Meeting time: 10:30 am Pacific Time)
Calendar of future Executive Commitee Meetings
No report this week.
PROPERTY MANAGEMENT (Luna)
>From: Rod Luna <rluna@ligo.caltech.edu>
No report.
DOCUMENT CONTROL CENTER (Mak)
>From Cleveland Mak <mak@ligo.caltech.edu>
- Continuing to process/edit/update RAL ADV LIGO SUS Drawings into the DCC.
- Continuing to do sample test searches on the DCC Test Site.
- Assisted K. Buckland, R. Desalvo & M. Phelps with shipments..
FINANCIAL SYSTEMS (Lindquist, Oracion)
>From: Karl Oracion <koracion@ligo.caltech.edu>
- Currently working on financial status reports for period ending 9/30/09 and Advanced LIGO cost transfers.
- Link to Advanced LIGO accounts: https://dcc.ligo.org/DocDB/0000/M0900053/002/ADV.LIGO_Char_%20of_Accounts_Ver.6.pdf
- Link to LIGO Operations accounts: https://dcc.ligo.org/DocDB/0000/M080407/002/FY2009_LIGO_OPs_WBS_Final_Ver.6.pdf
- Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport/. (For passwords contact Karl).
SUBCONTRACTS MANAGEMENT (Arvizu, Champagnie, Jasnow, Marroquin, Salone)
>From: Rudy Arvizu <arvizu_r@ligo.caltech.edu>
No report - out ill.
>From: Jacqueline Champagnie
See Advanced LIGO Report Below.
>From: Steve Marroquin smarroqu@caltech.edu
See Advanced LIGO Report Below.
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
- Received NSF approval of Operations Acquisition Plan.
- See Advanced LIGO Report Below.
PROPOSALS, REPORTS, BUDGETS (Lindquist, Beckett)
>From: Dave Beckett <beckett@ligo.caltech.edu>
Have begun editing material for the September Large Facilities Report. The due date for submissions is Thursday, October 8. I sent a reminder announcement yesterday but two important sections remain outstanding. I will contact those contributors directly.
CHANGE REQUESTS (Lindquist)
No open change requests.
HUMAN RESOURCES (Akutagawa)
>From: Cindy Akutagawa <cindy@ligo.caltech.edu>
- The next Staffing Committee meeting is scheduled for Monday, October 12th.
- All files for the Staffing Committee are up-to-date and posted on the SC web page.
[AL Note: we will be moving to EVO for this meeting.]
LIGO-M0900241-v2 “Laser Safety Training for Certification and Recertification of LIGO Personnel” has been finalized, approved and posted to the DCC. The information provided in this document will be used as a training guide for the upcoming LSO Laser Safety Workshop at CIT. The main reason for creating this training document was to develop consistent lab-wide protocols and training agenda, in an effort to bring all laser operators up to current requirements by providing the latest safety information for equipment and procedures.
- This was a somewhat rough week for the collection of science data (33%, ranging 14-18Mpc). Downtime accrued due to i) many large quakes and aftershocks (three in excess of M7.2), ii) high winds, and iii) a study to run the interferometer without ETM violin notches.
- Broad violin notches centered at 344Hz have induced some of the calibration uncertainty mid-band. In order to minimize this uncertainty, we either have to run less aggressive notches, or go without. For roughly 36h on Monday, we ran without violin notches to assess machine stability, and not in science mode (as the online calibration was thus spoiled - we can retroactively calibrate if analysts so desire). At first look it appears the effect (limited additional rms, no new sidebands) was small and we expect to run without notches when the S6b calibration becomes available next week.
- Calibration refinements continued under the new administration. Resorting to an older technique of transferring an ITM DC calibration to a corresponding ETM through a single-arm lock, a precision measurement was made with a sparser injection sweep, for longer duration. The S6a ETM DC calibrations were replicated within seven and two percent, well within the original epoch's stated error.
- The (old, S5 readout) RF port ISCT4, used to acquire initial lock and host the WFS1 photodiode, is typically floated on an air bearing. This week glitches and lock losses in the IFO were suggested to be due to excess noise from the table. We landed the table (and saw a coincident range drop of about a Mpc). We'll investigate alignment on the table as the 250um landing shouldn't induce the noise.
- Full frame data for all of S6 are now available on disk at CIT (tapes are available but not required). Full data look-back in the control room is 7-11 weeks.
Most of the week was spend with procurement of electronics components. We are working on RF amplifiers, TTFSS units, PD interface boards and common mode boards all at the same time. Vern removed the windows from a set of LSC photodetectors. The first unit has been tuned to the SHG locking frequency by Paul and is shipped to MIT.
EOC D. Ingram represented LIGO at the GEAR UP-sponsored College and Career Fair at Manson High School near Lake Chelan (WA) on 10/2. Several hundred students from Manson and nearby communities interacted with ~30 universities, gov. agencies and private companies over college and career preparation.
- After reverting the OMC front end code and series of reboots the digital electronics noise went down below the in-lock DARM noise. The bns range in this configuration is 16 Mpc on the LLO control SenseMon. The L1 calibration came under scrutiny this week. The scale of the SenseMon in the LLO control room was adjusted in July to match the range calculation based on calibration performed in June. This calibration was not confirmed by a later recalibration. Therefor the range stated above should only be used for relative comparison over past months. Another calibration run is planned for next week
which will hopefully will put an end to using various scale adjustments and disparate L1 DARM transfer functions.
- The main goals of this week commissioning is to implement the robust communication between the OMC and LSC front end codes, increase the power into the interferometer, and retune the interferometer in the new configuration.
CDS - Hardware
- Carl Adams participated in the advLigo suspensions training. They have found problems with fraying on the in-vacuum wiring and feedthroughs on the prototype that are being investigated.
- Carl and Jay Heefner started assembling the CDS DAQ test stand, now that (nearly) all the parts are here. One issue is that the prototype expansion chassis is a little too wide fit in a 19" rack with the rail kit. They are also figuring out an alternate method to feed the 1PPS signal to the test stand using a spare LASTI timing slave.
- The optical fiber was run from the optics lab to the MSR, and fibers are being checked out to the end stations. This will be used to repeat laser locking noise tests for advLIGO already done at LHO.
CDS - Software
- Keith dealt with several operational problems last Friday. These included a non-working statevector (traced to a missing segment file that was created), a lockup in the file server, and timing offsets attributed to bad time values on the atomic clock. After addressing these and doing a soft-boot of the front-ends on the RFM (but not the OMC), LLO was now back to good low-noise operation at 14Mpc (using the old OMC code from July, 2009).
- Keith worked with Matt Evans to get LSC front-end code building set up again. This was to allow changes to the LSC (and OMC) code to make the timing of data transfer over the RFM more robust.
- The VME daq ctrl front-end got stuck again and needed to be rebooted. We are looking to follow LHO's replacement with a direct IRIG-B feed from the GPS/NTP server, once that hardware is commissioned.
- Keith and Shannon got the first new subnets configured on the main switch and NAT router. This will allow the CDS sub-netting to proceed. Keith created documentation of the current and future LLO CDS networks. These changes follow those planned for AdvLIGO.
- New UPS batteries for the atomic clock were received and will be installed during subsequent maintenance periods.
- The main network switch has a failed power supply and failed fan. Replacements are being obtained.
- The new tape backup system was commissioned on the new backup server. It takes 30 minutes to do the whole file server (about 700Gb).
(William Katzman, reporting for outreach group)
- Conducted Project Ripple’s professional development on Saturday and Sunday. Twenty-four teachers engaged in activities around electromagnetism, space science, energy and light waves.
- Two staff members attended the Exploratorium’s Inquiry Institute.
- Continued scheduling groups.
- Conducted three field trips for 150 students.
(Amber Stuver)
- Gave a Q&A session and a control room tour to a group of ~20 teachers visiting LIGO as part of a professional development workshop.
- Gave a guided exhibit demonstration and control room tour to ~100 4th grade students.
- Preparing unit on optics for docent training next Monday.
Nothing significant to report.
See also Advanced LIGO
No report received for the current week.
- Work on the understanding of the noise in the dual-recycled configuration continues after the recent resumption of lock acquisition. There is currently a large level of laser frequency noise incident on the interferometer - mainly concentrated in large peaks from 500-7000 Hz. The noise is ~30-100x larger than the noise from the PSL. We have ruled out RFAM, noise in the MC suspension electronics, and sensing noise of the MC. Our current best guess is that there is an extremely high level of vibration in the Piezo Jena steering mirrors after the MC and ahead of the PRM.
- The Online Adaptive Filter system is again running and reducing the noise in the MC by a factor of a few. The performance is worse than its original configuration and we are now investigating the noise limits. We have seven seismometer channels and six accelerometer channels in use.
- The fiber stabilization setup in West Bridge has now got the beam double passing the fiber and both AOMs are in use. In the next weeks we will be closing the loop and hunting the out of loop noise.
- The SHG noise measurement setup is now producing green light out of both PPKTP ovens. We also have in hand the 50/50 dichroic beamsplitters from Advanced Thin Films so that we can set up the Mach Zender and measure the frequency noise generation of the doubling process.
- Much of the work is now going into preparations to get ready for the upcoming vent and upgrade of the 40m optics and control systems.
Report for week of 24 September:
- News on the 40m upgrade: there was a problem with some polishing defects that were caught by the coating vendor. We went to the vendor and inspected some of the polished (uncoated) mirrors with the dark field / fiber light technique. We have requested that our ITMs be repolished. We will use the best of the PRM/SRM that now exist and ask for the spares to be repolished and coated if we see a problem with them after use in the interferometer. This was overall a positive experience and we were able to learn much about how coatings are done.
- The total delay will be ~2-3 weeks. The ITMs are fast to repolish because they are supposed to be flat.
- In studying the stability of the reference cavity, we have learned that the DC stability of the cavity is not at all limited by the servo, but instead by the improper placement of the temperature sensors around the can. The daily room temperature fluctuations of ~1.5 degC p-p yield ~25 MHz p-p of frequency change. The frequency shift of the reference cavity (as monitored by the NPRO SLOW actuator) lags the room temperature by 90 deg. Taking into account the CTE of fused silica, we calculate that the reference cavity is only being stabilized at the 150 mK level on a 24 hour time scale. Not spectacular.
- This week Akira resumed his efforts at noise reduction in the TNI. The latest noise curves show prominent peaks in the kilohertz range that weren't there before we rotated the in-vacuo Pockel's cell. This Pockel's cell is mounted on an L-shaped aluminum bracket to match its orientation to the polarization of the light in the interferometer. The original idea behind this recent modification was to boost the modulation depth and thus (hopefully) bring the anomalously-high shot noise down. Rotating the Pockel's cell did indeed boost the modulation depth, but at the expense, apparently, of adding these new mechanical resonances. When we were first talking about making this change, our second option was to correct the polarization using a half-wave plate. We originally didn't like this because it meant adding a new optic to the beam path, but now it may be worth trying.
- Greg successfully switched the fast path in his servo over from the Michelson pzt to the laser's pzt, but he is having some difficulty getting the slow loop engaged. The problem appears to be in the phase margin at the crossover between the two paths, and he and Eric have worked out a possible solution. We'll see how well it works on Friday.
We are still recovering from the clock rate change. The Damping loops are now running, we are working on the control loops. We still need to change the anti-aliasing filters to take full advantage of the upgrade.
Chad Hanna:
I have been continuing to work on the followup pipeline for the s5 high mass search and am preparing a tag for the final post processing run.
Antony Searle:
Finished development of adaptive integrator for Omega pipeline skymaps.
Leo Singer:
- Added on-demand, fully automated retrieval of ephemeris for the WIND satellite, for the purposes of accurately estimating geocentered times for triggers.
- Investigated a number of NASA/GSFC-curated astronomy packages for doing some of the coordinate transforms that I need but that LAL does not provide.
- Verified that the errors introduced by interpolating the ephemerides in an earth-inertial frame, instead of a frame that rotates with the Earth, sun, and L1 point (which Wind orbits) are acceptable for our purposes (orbit simulation is checked into Subversion).
- *Finally* located all of the veto definitions for S5, A5, and S6; today I am going to lump them into a single veto definer file.
- Produced engineering formula, inspired by big-Oh notation, for asymptotic effective SNR for almost any kind of search pipeline. The powers of the various parameters in this formula will dictate my priorities for upgrading the Flare pipeline.
P. Ajith:
- Worked on the instrumental veto code using a simple bilinear coupling model, and tested it on many combination of channels from one day of E14. https://ldas-jobs.ligo.caltech.edu/~ajith/insveto/
- Worked on modifying the injection codes for IMR spinning waveforms following up the suggestion of the LAL librarians and IMR group.
Pinkesh Patel:
- Preping for the Calvera Search.
- Working with Joe and Vladimir on their followup code. We found that resampling is doing a wasteful thing and are writing something to make it less wasteful. It works fine for extremely large bands, but not so much for very small bands, which are what Joe and Vladimir use.
Kipp Cannon:
- Continuing work on stream-based inspiral analysis techniques.
- Continuing work on S5 high-mass search.
- Working with IMR people on joint inspiral-burst-ringdown analysis.
- Some infrastructure support (metaio maintenance).
- Telecons: daswg, inspiral, imr, inspiral-code, inspiral-pipedown.
Joseph Betzwieser:
I worked with Pinkesh and Vladimir on trying to track down several bugs lalapps_ComputeFStatistic_resamp, and have been testing it against lalapps_CompuateFStatistic_v2 in a followup pipeline.
Amber L. Stuver:
- Gave a talk at LSU on the recent GRB findings on the arXiv as part of their astrophysics lunch seminar.
- Calculated burst rate upper limits WRT radiated energy for waveforms other than the Q=9 sine-Gaussians.
- Continued to work with users to prepare for the MatApps transition from CVS to SVN. The current transition date is 28 October unless show stopping issues arise before then. Also worked with the MatApps team on other administration issues.
Stephen Privitera:
- I resurrected my calibration response function reshaping code, put it into lalapps and began testing it. Initial results look good and I am preparing a wiki page to describe the work soon.
- I have been working on collecting S5 inspiral range for the CBC rates paper.
https://ldas-jobs.ligo.caltech.edu/~sprivite/S5range/summary/
Drew Keppel:
- Investigating the mass dependence of the SVD coefficients associated with LLOID for developing an interpolated template bank.
- Developing a version of lalapps_inspiral_hipe which will replace lalapps_thinca with ligolw_thinca.
Anand Sengupta:
- Comparing trigScan clustering for various weeks in S6.
- Network Fischer matrix calculation.
- Writing the Amaldi conference proc paper.
John Zweizig:
- In DMTLand
- Fixed up a few monitors that were having difficulties with dropouts due to modified behavior of the IIRFilter class.
- Rebuilt the h(t) monitor with the new lsl-6.3 code.
- Restarted the above and switched the L1 SensMonitor to use the S6V1 calibration.
- In nds2land
- Updated/fixed the sever code for consistency with gds-2.13.3 (release 0.3.8).
- Updated the source frame configuration ldas-pcdev1 on the nds2 server.
- Added automatic source frame list updates for the archived data.
- Continued work on a more general frame-list update mechanism to use the ldas frame-cache lists.
- Released minor bug-fixes in the nds2 client (release 0.4.4).
- In crtoolsland
- Continued work on making the dtt work with nds2.
This week the diskcacheAPI has been stabilized. A couple of corrections to code addressed issues related to lock up memory leak and incorrect usage of memory management. The code is being prepared for release.
- More migration of S5 L1s from 9940 to T10KB tape, md5sum of files already migrated to confirm their integrity.
- Working on case with Sun vis a vis morbo crashes, ongoing.
- Mailed 9940 tapes to observatories (6 boxes).
- Added LDAS generated h(t) to the lag plot.
- Fixed damaged files, found "missing" tape (it was stuck in a drive unable to be ejected because the silo was full) for data that LDR needed to replicate.
- Called in broken T10KB drive.
- Recovered accidentally deleted directory for Igor (via ZFS snapshot, tho' the absolute symlinks were messed up).
(Phil Ehrens):
- Completed trial version of the Safety report website. Further work after meeting with Dave Nolting on 10/19.
- Updated the host certs for all ldas-jobs machines at all four sites. Updated the host cert for ldas-pcdev1 and ldas-grid at llo.
- Assisted LHO with replication of subversion repos for cds.
- Returned to work on the TAR form.
- Monitored and managed the cluster.
- Attempted to solve user problems.
- Pinged Intel about SSD replacement.
- Upgraded most HP2910 switches to latest firmware (3 remain).
Bios conf & kickstarted racks 70,71; setup opennms2 machine; adding modules to puppet configuration engine.
- SUN fixed all the remaining obviously broken nodes; all 252 nodes are up and running; however, it seems like there are still many flaky nodes; some x2200s crash during badblocks because their / mirror loses synchronization; after reboot they seem to be working again; possible problems with disks or SATA cables.
- Modified rsync script to prevent copying incomplete .* files; at the moment the new version is only used to to move V1 DQ XML files from CIT to LLO; once testing is over, it will be used for all the other data transfers as well.
- Gateway crashed today; restarting it seems to fix the problem for now; I am working to bring the system up.
(Greg Mendell):
- LDAS hoft switched to using LAL/LALapps version 6.3 lalapps_ComputeStrainDriver, starting from 938889088 GPS = Oct 06 2009 18:31:13 UTC. This was not a change in the calibration, but an update to the error handling of the code, which was coordinated and approved through DASWG.
- Ran manual checks to fix problems with missing data, and verfied that once again trend, L0, L1, L3 and LDAS hoft data are up-to-date in the LDAS archive at LHO, LLO, and CIT.
- As usual, helped user with problems finding data, and installing the LDG client.
(Dan Moraru):
- Moved automount configuration to LDAP.
- Created new user accounts.
- Added new tapes.
- Decommissioned 3 old computers (an Ultra 10 and 2 Dells).
- Continued working with Sun on fixing the last 3 nodes.
(Fred):
- EVO testing @ sonesta for upcoming lsc/virgo.
- xp/solidworks install.
- Deactivating equipment.
- Adding log rules to ligolog ossec.
- Pruning rsync backups.
- Desktop issues (wireless, matlab, office).
- /apps and /dmt-apps now mounted from chaos (attached to new disk arrays).
- Moved one of the new arrays to another rack to help with ventilation issues.
- Patched lists, llo-vpn, and a couple others.
- Created new GC account for user.
- Installed mediawiki for the Core Optics group.
- Testing various "features" of JIRA, awaiting new release from appfire.
- Restarted JIRA after "feature" caused crash.
- Found several new issues with JIRA.
- Attended a few meetings.
- Worked a couple small procurement items.
- Numerous usual/unusual user support requests.
- Cleared spam trap daily.
- User support issues while Dwayne was on vacation.
- Mailing list maintenance & subscriptions.
- Followed up with Mike P., Christian and Larry on a security issue which was found to be a false alarm.
- Worked on ligo.org mail setup.
- Worked with Keith to reconfigure the CDS core switch.
- Working with David on fiber termination for warehouse.
- Looking at scripting ndiffs of the network scans that are performed multiple times a week. Looks like a memory issue on the server where they are currently hosted.
- Looked into a routing problem between Eatel and here.
- Fixed a kprop problem on LSC3.
- Numerous other miscellaneous maint. and usual tasks.
(Jonathan):
- Changed printer transfer kit in the LSB.
- Moved the 3rd rack into the commas room.
- Minor amount of recabling on the rack to remove some temporary cable routes that were put in while reracking.
- Sci-mon shift.
- More LIGO.ORG documentation updates and updating the auth project with gc transition status.
- Order replacement computers for some of the public computers.
- Ordered a dedicated network scanner unit.
- Convert tiffany.ligo-wa into a virtual machine. Something is not working, the resulting vm will not run and there are no error messages. Reverting back to using the physical tiffany.ligo-wa.
- Preliminary budget projection.
- Setup of a test NIS+ domain. This is to investigate remapping id values.
- Testing remapping of user id values from low numbers which conflict with system values.
- User support, Dwight Carter, Lissa Girgis, Alan Wilkins.
- Meeting with Abe re kerberos, webmail, LIGO.ORG.
- Fixed a problem with the mail filter machine where the system time was not updating properly (issue with running in a vm)
- Routine spam and dhcp checking
(Mike):
- Working the spam filters.
- Trouble shot a software and printing issues on a user's laptop.
- Loaded two Engineering workstation for new hires. Currently loading another Engineering workstation.
- Starting loading updated version of vmware on my new engineering workstation. I'm loading solaris U6 & U7, centos, xp-32bit, vista64-bit, and windows 7.
- Working ADVLIGO daily backup, that include PRISMPM, Primavera, & PDMWorks.
- Setup a meeting for Ken Mailand & company.
- Other misc. user support and sysadmin tasks.
(Christian):
- Riccardo- Created full backup on one of Riccardo's laptop and re-imaged with LIGO unattended dvd.
- Eric- Installed MS Project 2007.
- Mike and I installed and configured ClearOne system with webcam on 6th floor Millikan.
- Continued working on installing SSL certificate on harbor.ligo.caltech.edu.
- I had to resubmit a new SCR with ISPCA.
- Testing Windows 7 with EVO this week. So far everything seem to be working.
- Other misc.: Continued onsite software/phone support.
(Veronica):
- Ongoing work on DCC migration.
- WebComm: Running tests to ensure compliance with accessibility and w3c requirements.
- CaJAGWR: Website updates, taped the last seminar and processed it for streaming.
- Various updates of the LIGO/LSC websites.
(Larry):
- Working on a number of procurement items. Checking out equipment for the new engineering workstations. These should be ordered in the next couple of days. Ordered a couple of replacement notebook computers which should arrive the first of next week. In the process of ordering more Solidworks licenses. Getting quotes on bulk fiber; presently waiting for the quotes from a
couple of suppliers. Working on equipment list needed for move into Downs. Tracking order for new printer. Received some of the s/w pkgs. that had been ordered and started distribution.
- Setup a couple of new servers. Some minor tweaking still needs to be done before putting them into production.
- Cleaned up more of the cabling in the computer rooms.
- Some equipment tracking for property.
- More work on testing the iExpense system campus is planning on using.
- Spent time going through different ip tables cleaning things up so we can increase the size of the dhcp pool.
- Assisted on a couple network items in the different labs in the sub-basement.
- Some minor assistance to Jonathan on NIS+ work he was doing.
- Work at MIT including testing of the network and EVO at the Sonesta, with Fred.
- Attended a few more meetings than usual.
- Assisted a few groups with their meeting setups.
- Cleaned spam filters and made some minor modifications to the filter setup.
- Regular user assistance and account setup.
(Melody):
DCC:
- Usual user support.
- Released a new version of the DCC with the following features:
- Accessibility of the Public Link from the private document.
- Author searches do not include Author Groups (used in Quick Search text fields and from the Authors link through the home page.)
- Glimpse upgrade.
- Glimpse / Perlfect (easy) switch from config files (private and public sites have different config files).
- Advanced LIGO Lab Business group. I also updated the List of Groups and Users
( https://dcc-test.ligo.org/cgi-bin/private/DocDB/ListGroupUsers ) to list the subordinate groups.myLIGO:
- Responded to RT requests.
- Started on adding the new LSC groups into the myligo roster.
- Now able to run automatically at 24 OSG sites.
- Recent Average Credits is up from 600K to 1M this week.
- Averaging 3000 cores utilized per week with a peak of 4000 on the weekend.
- Several sites are low on $OSG_DATA storage. Have opened trouble tickets for these sites and discussed possibility of buying cheap 1TB disks to resolve issues with OSG PI.
- The two month's worth of data run using the new ihope code on the Caltech OSG ITB cluster has completed about half of its jobs (48000 total). Issues with the condor gridmanager have been throttling job throughput significantly. The condor developers have logged into the machine and made suggested changes that have improved throughput slightly.
- Testing the OSG-MatchMaker and associated changes to Pegasus to generate binary inspiral workflows to run on the OSG and use OSG Storage Elements.
- Began preparations to run binary inspiral workflows at the Nebraska Firefly cluster as the next step after the Caltech ITB cluster.
Working with Condor and Pegasus development team to track down issues with job throughput. A beta version of Condor gridmanager has been installed and has resolved some of the issues.
- Setup documentation repositories, twiki and syncing tools with web servers.
- Created several sections for how-to's in the twiki.
- Worked with Jim Weichel of FNAL on the agenda and topics for the documentation meeting in Chicago next week.
- Reviewed OSG Management, Charter and Bylaws governance documents identifying needed changes to support transition between funding cycles.
- Checked into hosting a Virtual Organization Software Strategies workshop here at Caltech next Feb. Provided contact information for key software development leaders in the LSC to participate.
- Continued to review joint activities proposal between OSG and TeraGrid for workshop. Also reviewed and gave feedback for the first draft of budget.
- Worked closely with OSG staff, Pegasus staff, Condor staff and RENCI staff to resolve several issues associated with generating and running binary inspiral workflows.
- Initiated quarterly collection process for scientific documents that benefited from the OSG Council. Passed these along to the OSG publication team.
- Received invitation to present at the 27th Open Grid Forum Conference next week in the Requirements for Future Cyber-infrastructure session.
- Wrote a presentation for the OSG Area Coordinators on the WBS 10.0.4 regarding LIGO applications development for the OSG.
- Began working on talk for OGF 27 conference.
- Attended two meetings with EVO developers and one with the LSC chair of the remote participation committee. Have begun drafting a LIGO/LSC requirements document for the EVO developers and a timeline to support near term needs (less than 6 months).
- Updated the CompComm on the recent advances in running Einstein@Home jobs on the OSG. Grid submissions onto the OSG are now number two for weekly credits and when condor backfill of E@H jobs are included from OSG resources not using the grid submission mechanism, the OSG as a whole is in a tug of war for number one each day.
- Supported the usual flurry of DOE grid certificate request and LDG user account requests.
- Britta gave a very well received talk at the Grace Hopper Women in Computing Conference last week.
from Carol Wilkinson
Project Controls
A change request to augment staff for the project to produce technical procurement documents and to support electronics procurements, fabrication, and testing is in draft form. The new staff will support active tasks as well as future tasks, as an aid in maintaining schedule. Part 1 will cover new staff for presently active subsystems: Core Optics, Facility Mods and Prep, Seismic Isolation, Suspensions, and Project Management. Part 2 will cover the remaining subsystems. The request will be implemented in October.
Staffing
Job ads and statements of work for the staff augmentation change request have been posted and resumes are being reviewed. Several candidates have been selected for advertised positions and job offers are being processed. A position in project controls and another in systems engineering have been filled.
Procurements
For Ed Jasnow
- Gathered information for Ann Bussone, OGC, in preparation for filing appeal to U.S Customs Office regarding import duties on donated equipment.
- Reviewed proposed new one-page SOW for build-to-print RFQ’s.
- Authorized access for Marie Woods, MIT, to all LIGO TechMart requests on recommendation of David Shoemaker.
For Steve Marroquin
- Finalizing Statement of Work for contractual submittal to Senior Aerospace (SI-150B HAM Vacuum Chambers Expansion Bellows).
- Finalizing Request for Quote solicitation SM-007 for SI-150A Ham Support Tubes.
- Preparing requisition documentation to exercise BSC small actuator option with Planning Systems Inc .under Contract No. 75ADV-1086985.
- Executed purchase order contract to TRIAD for the services of Lance Fennell (Design Engineer).
- Discussed solicitation strategy with Calum Torrie for the upcoming CO-122 Main Optic Carriers procurement.
For Rudy Arvizu
No report this week.
For Jacqueline Champagnie and Gina Salone
- SI-144: Storage Containers; RFQ issued to Vendors due 30 days; 2 additional Vendors received RFP for due date October 12, 2009.
- SI-145: Counter Balance; RFP issued to Vendors due 30 days.
- CO-102: Optics Metrology; On Hold.
- Updating DCC with procurement Event Pages.
- Loading Techmart Orders over $5,000 into DCC from July 2009-October 2009.
Invoice Administration/Admin Support
For Ruth Winstead
- Managed and processed invoices through Webnow.
- Email and phone tech reps and vendors on status of purchase orders.
- Delivered invoices to Procurement Services (Guillermo).
- Resolve issues for end users regarding receipt of items and payment of invoices.
- Continued posting of packing slips and invoices to DCC.
Property Management
Rod Luna
No report.
NSF Acquisition Approvals
- Two contracts out of six were approved by NSF for long term labor contracts for technical specialists is at NSF. Approval for the requests for four future new contract hires in the staff augmentation change request will need to be submitted at the time of award.
- A second request for re-approval was sent via Fastlane to NSF on Thursday for machined parts for Suspensions. The awarded price was outside the pre-approved value, requiring re-approval by the NSF before award.
Progress Updates
- The progress for September has been incorporated into the earned value reporting system. The project percent complete shows significant progress in the month, decreasing the schedule variance.
- A draft of the combined Advanced LIGO monthly and quarterly report is undergoing review and completion. It will be submitted to the NSF by October 15.
Meetings & Reviews
- The next Monthly Progress Reporting Meeting will be on Thursday, November 12, at 8:30 AM PT. Subsystem leaders or their delegates need to attend.
- A meeting of the Advanced LIGO Project Advisory Panel will be held on Oct 15 and 16 at Pasadena.
Dennis Coyne <coyne@ligo.caltech.edu>, Peter Fritschel <pf@ligo.mit.edu>, Calum Torrie<ctorrie@ligo.caltech.edu>, Matt Evans <mevans@ligo.mit.edu>, Ed Chavez <chavez_j@ligo.caltech.edu>, Bob Taylor <taylor_r@ligo.caltech.edu>, Mike Smith <smith@ligo.caltech.edu>, Mike Zucker <mike@ligo.mit.edu>, Hiroaki Yamamoto <hiro@ligo.caltech.edu>, Kurt Buckland <buckland_k@ligo.caltech.edu>
See the Adv. LIGO Systems wiki.
For a list of reviews, see the main AdL wiki page.
Optical Lever Design Requirements Review & Conceptual Design Review (DRR/CDR): continues (Mike L. chair).
Impending reviews currently:
- Systems FDR: documents ready on or about 10/14.
- IO FDR: documents ready on or about 10/12.
- SUS HSTS FDR: documents on or about 10/16.
Procurement Techncial Reviews:
See the procurement wiki.
- Provided technical review of the HAM expansion bellows procurement.
- Provided technical review of the HAM support tubes procurement.
- Provided feedback on new templates for both RFQ and contracts to Steve and Rudy.
Technical Review Board (TRB):
See the TRB log.
Nothing significant to report.
See the VRB log.
UHV Prep Lab: (Bob)
- Working on getting FTIR power supply repaired. The power supply for the FTIR spectrometer has a bad transformer. I have ordered another power supply, delivered today 10-7-09 and the spectrometer is working again.
- I Have the first of the FTIR test samples done and ready to scan. I am working on getting the other chemicals for the other tests to be run.
- I have cleaned 500 shoulder screws and 750 flat washers for the Actuators, and will ship them back to Matt Gordan at PSI when they are done baking. More SEI actuator parts are on the way and should be here this week.
- Rand has found a DRIFTS attachment that will work in our Nicolet 380 FT-IR spectrometer. With this attachment we will be able to duplicate JPL's measurements.
- I will change the Cavity loads tomorrow. Next in the Cavities is Krytox in cavity 2 and EP30-2 in cavity 1.
Optical Contamination Cavity Testing: (Bob T., Liyuan)
- Dennis is drafting a report on scaling the test results that Liyuan and Bob made for First Contact(TM) samples -- it is fine to use for cleaning/protecting optics in situ.
- Cavity 1: Masterbond low outgassing epoxy (EP30-2).
- Cavity 2: Krytox low vapor pressure lubricant (we have samples) - should go into the chamber this week.
- Cavity 3: Waiting on repair of the laser.
- Queue:
- Other low outgassing epoxies, if/as needed after testing EP30-2 (Masterbond EP30AN-1, EP37-3FLFAO, EP65HT-1).
- Copper & polyimide clad fiber optic, IVG Fiber CU1300. Brian Lantz wants to test this material for use with an optics table, optical lever system. Could be used for ALS etc. Likely "inherently" vacuum compatible, but worth checking since it has a polymer.
- Torr-Seal (Varian adhesive -- proposed replacement for Vacseal).
- Barrierta-IS (a German Company low vapor pressure lubricant alternative to krytox, that New Focus thought may be cleaner) (we have samples).
- Retest ADE position sensor materials (2 Tra-Con epoxies) due to the anomalous test results (no samples in hand).
- Nedox solid lubricant (for potential BSC-ISI tooling use (class b) but perhaps useful in vacuum as well) (had small sample -- likely inadequate in size).
- Tungsten carbide/carbon (WC/C) sample (for potential BSC-ISI tooling use (class b) but perhaps useful in vacuum as well) (had small sample -- likely inadequate in size probably inherently vacuum compatible).
- Cesic sample (composite ceramic of SiC, Si and C) possibly inherently vacuum compatible application is not clear (high stiffness to weight structure) (sample size adequate?)
Configuration Control & Documentation:
Nothing significant to report.
- Optical Layout (Dennis & Mike): Dennis has made changes/corrections to the H1 layout (D0901920-v4 pending) and will post as a Zemax and eDrawing files soon. Dennis has made similar corrections & changes to the H2 layout (D0902345-v2). The ray traces for these layouts have been given to Ed to incorporate into the SolidWorks integrated layout drawings at the chamber and building levels. Mike is also working on updating the H2 layout to reflect the latest IO layout for HAM8.
- System Layout Drawings (Ed, Calum): Ed and I are working on adding the laser to these drawings using Zemax files supplied by Dennis. We have started adding the laser to the SolidWorks files. From the DCC the laser can be viewed in a .jpg plan view inside each chamber and from configurations in the e-drawings.
- I updated the position for all components in HAM2-H1 and HAM8-H2 Chamber, based in Dennis latest Coord’s. I also added the Fixed optics components to the top level. I added the angle for all components.
- I updated the systems drawings for the following chambers: BSC7-H2 and HAM9-H2 adding more annotations/notes to page 1 & 2. I added page 3 (now we have 5 pages) showing the location and angle of each suspension with respect to the X and Y Axis.
- I created and attached PDF files to DCC showing the Laser Beam (File from Zemax) at the chamber level to the H1 site only.
- Calum and I are discussing the possibility of adding an eDrawing showing the laser beam at the chamber level, which I did to the H1 site only. I created 3 Configurations per chamber.
- As per Dennis' request I added the CO2 ITM x & y steering mirrors to BSC1, BSC2 and BSC3 from H1. I updated the eDrawings in DCC
- Cake Tins (Calum, Kurt, Ken): x2 prototype CP containers being made by x 2 outside companies. The companies started the prototypes this week and progress is going well. Kurt and I are working on the ETM, R and FM drawings to the new designs with help from Ken Mailand. Steve and I have started the new SOW and RFQ for this effort. We have also discussed storage and transportation related issues with Margot and Gari.
- ETM Telescope (Calum): I attended ETM telescope meeting and followed up with Ken Mailand and Matt Evans on suspension related issues.
- Modal Lab (Calum): The new table has now been installed and we hope to re-start tests on the damping struts tomorrow, Friday. The PO for the new shakers should be out by tomorrow, Friday. Several accelerometers from the SUS lab have been found and moved to the modal lab.
- ESD Pattern (Calum): We are working on drawings for the CP and ERM ESD pattern for the face of the optic. These are based on COSMOS outputs from John Miller. These will be shared with the vendor tomorrow, Friday along with step and dxf files.
- Quad Mock up for COC (Calum): All PO's for this work should be out by tomorrow.
- Optic Protective cover (Calum, Kurt): Kurt and I are working on 2 concepts for this effort and hope to have both prototyped in the next week or so.
- RAL files (Calum): Both the BS/FM and the Quad files from RAL are now on the DCC. Betsy is helping to review what we have along with Joe O'Dell. These will all be made public.
- PDMWorks (Calum): I am gathering a list of items required to help maintain our PDMWorks vault with help from Mike, Mike, Ed, Sam , Kurt and Derek.
See the RODA status page and the Interface Control page.
Nothing significant to report.
From: Hiroaki Yamamoto hiro@ligo.caltech.edu
- Hiro visited Matteo of APC in Univ. Paris and Raffaele of LMA to work with Virgo people about FFT-based simulation. He attended a FFT modeling meeting at LMA on September 30th afternoon.
- SIS is installed on machines at APC and LMA and is used for some basic cavity simulations.
- Hiro analyzed the advVirgo stable cavity design and found that the astigmatism in one of the baseline designs is very large. This kind of effect needs to be analyzed more carefully to define proper design under the constraint of the Virgo tower locations.
- Matteo requested a new feature in SIS that the input beam can be specified by data files, instead of LG or HG mode parameters. This feature has been added, and the new version with this feature will be released soon. This is to study the LG33 mode.
From: David Nolting dnolting@ligo-la.caltech.edu
Continues to engage AdL team members with system design safety concerns and developing hazard analysis that identify potential problems and control options.
From: Mick Flanigan flanigan_m@ligo-wa.caltech.edu
- Wiki site is now up for the collaboration with the coatings teams. We will begin the layout and upload of documents in the next week.
- Optics team is the first to enter a real defect to the Inventory Control System. It can be found at https://ics.ligo-la.caltech.edu/JIRA/browse/DEFECT-COC-48 however the data display will improve dramatically with the new version of ICS being built.
- Final Request for Information has been cleared with the vendor manufacturing the large blades. They have no received several of the rough blades from the EDM machine shop, and are proceeded with the fine cutting, heat treating, plating and polishing. First unit dimensional inspections will take place first week of November, which I will be observing.
- Working on the HEPI actuator measurements this week and next. The new granite slab has arrived at LHO, as well as the set of gauge pins. We have ~25 units to do, expect to take a week or two to complete all. Results will be loaded to the DCC at Q0900008, and we will also do a summary statistical analysis at the end of all LHO and LLO measurements.
- We are still working on prepping a release with all the new features. Plans were to load it Thursday and Friday this week, but it looks like there are some delays and we may be looking at Monday or Tuesday now. Several bugs are still being worked out, including a critical bug around the load of bulk parts at separate sites causing record conflicts. There are also a few late identified issues with the new graphics and handling existing parts in the system.
- We plan to close out work on ICS phase 2 very shortly, as our list of features to be developed is down to 1 left, Assembly Records. Once this is programmed and the bugs addressed, we will move into longer term use and collecting data about how we can improve, what features are still needed, for a potential phase 3.
- Statistics on the Inventory Control System:
- Bake Loads: 11
- Clean Loads: 19
- Shipping Loads: 7
- Parts in System: >10,000
- 10/23: Inspection, Audit for SUS team in Atlanta.
- 11/2: Dimensional Inspection, Large Blades, San Luis Obispo.
- 11/6: COC coatings supplier QA review, France.
From: John Worden <worden_j@ligo-wa.caltech.edu>
No report this week.
From: Ken Mason kmason@ligo.mit.edu
No report this week.
From Janeen Romie and Norna
Robertson
(romie_j@ligo-la.caltech.edu, nroberts@ligo.caltech.edu)
- HLTS: Structure has arrived at LLO. Cleaning of parts underway and assembly of prototype will start next week.
- HSTS: Documentation for FDR being prepared. The goal is to have documentation posted by Friday, Oct 16th.
- Quad alignment training underway. Visitors Joe Odell (RAL), Jay Heefner and Norna Robertson (Caltech), Doug Cook, Betsy Bland and Mark Barton (LHO), Brett Shapiro (MIT). Local staff involved include Janeen Romie, Gary Traylor, Carl Adams, Matt Maxwell, Josh Smith, Bryan Smith.
- Work going very well. BOSEMs and first article AOSEMs were mounted and harnessing attached. OSEMSs were aligned and signals checked. Transfer functions were measured and used to diagnose and correct mechanical misalignments. Experience was gained by staff on controls and debugging techniques. Theodolite was used for sensing and aligning pitch and yaw of test mass and reaction mass ( through test mass), using small optics mounted into metal masses. It is looking feasible to use autocollimator for measuring separation.
- Detailed discussions on storage containers, facilities issues, AOSEM assembly/alignment issues, optical tools for alignment, cabling and connector issues took place.
- Writeup on the fibre pulling and welding machine electronics, documenting the as-built system at LASTI, has been uploaded to the DCC (T070005.)
- Monthly variance report completed. Updated machine shop internal database.
From: Peter King <pking@ligo.caltech.edu>
No report this week.
From: David Tanner <tanner@phys.ufl.edu>
Advanced LIGO Design:
- We are woking on the FDR for the IO (Muzammil, Luke, Rodica, Guido, Dave, David).
- We finished the ZEMAX baffle layout for L1. (Rodica).
Advanced LIGO Acquisition:
We we had a proposal evaluation meeting with UF purchasing for the proposals fro coating the MC and SMs and also the proposals for polishing of the small RMs. (Muzammil, Rodica, Dave, David).
ELIGO Commissioning:
- We measured the MC length and found the oscillator frequency was 150 Hz different from what it should be (Kate, David).
- We determined that the sidebands are not contributing to RIN; turning them on and off yields no change (Kate).
- We set up an SR560 in the POX path to the ADC to whiten and AC couple the signal in order to make a better POX RIN measurement (Kate).
From: GariLynn Billingsley <Billingsley_G@ligo.caltech.edu>
- An ITM (2ITM04) was scanned using the jaz spectrometer to check the possible ROC's influence of ETM04. The result, however, is quite different from that of the ETM04. The shift of the reflection peaks in 550-1000 nm is not symmetrical from center to edge, and is not proportional to the wavelength. A following scan by rotating the mirror 90 deg has been done, proving that this result is not caused by sort of systematic error. We are going to scan several more LIGO-I COCs and hope the 2ITM04 is only a particular one.
- With Rand and Margot, continue to test the DW and FC cleanings with the AR coated ESW03 window at CASI.
- Weekly call with CSIRO doing AdL coating reported by Bob Oreb to have been "Well run and on time". Many details. I am going to create a running action item list.
- Elimination (for the time being) of R3 figure change after coating specification. All required paperwork completed.
- Detailed communication between CSIRO and MIT/CIT gold issues begun, communication direct, I am copied on all correspondence and review before any execution.
- CSIRO defect contract language in review now by Candace Younger. Hope is CIT is protected against latent defects so that we need only use CSIRO supplied data for acceptance. Candace will examine this next week.
- Defect counting microscope arriving now and install/training on it on 10/14. I moved all the boxes from the mail room to 015A in Downs.
- Cleaning experimentation shows Drag Wiping followed by First Contact combined may be a superior method to the individual use of either (Margot).
- Tinsley has agreed to weigh the COC before Ion Beam Polish, resolution to be within 10 g, per discussions with SUS. This information will be available as soon as optics ship from polishing.
- Tinsley has completed their inspection of the three Fold Mirrors as completed by Coastline. These pieces are ready to be shipped to CSIRO for annealing. They will then be returned to ASML for ion beam figuring.
- New shipping containers may require a scope change for the polishing contract. Current tooling is designed to interface with the old container design. We are trading the cost/schedule/safety impact of keeping a few of the old containers and using them to shuttle the optics, or proceeding with a new tooling design. There is a concern that the teflon posts are not long enough in the old design to fully protect the optic from the lid.
From: Dennis Coyne <coyne@ligo.caltech.edu>
Subject: SLC & IAS Weekly
- Stray Light Control (SLC): (Mike Smith) Mike has selected three candidates for the SLC ME designer position and four candidates for the AOS designer/draftsperson position. One candidate has been interviewed so far. The remainder will be interviewed by next week.
- Output Faraday Isolator Suspension Assembly: Niem has ordered all the parts for the Output Faraday Isolator Suspension prototype test. Delivery is expected within the next 3 weeks. He measured the extension of the 0.375 inch diameter rubber cord under a load that caused approximately 100% expansion.
- Initial Alignment System (IAS): (Dennis Coyne) Nothing significant to report.
From: Eric Black <black_e@ligo.caltech.edu>
Subject: Oplev Weekly Report
- Since our last report, Andrea Lottarini gave his final presentation, before heading back to Pisa. His project was to look at using a ccd camera to replace the quad photodiodes to measure the position of the beam, after it is reflected from the suspended optics. The idea came about after we noticed that moving the coupling fiber produced a large displacement signal at the quad photodetector (pd), even if both ends of the fiber were strain relieved. We suspected that the mechanism for this was changing power in the cladding modes, which the ccd can distinguish from the Airy disk but confuses the quad pd. Andrea showed data demonstrating that data from a ccd, collected by and fitted to by computer, showed less noise and possibly less long-term drift than the analog signal from a quad pd. Tara and Riccardo have, in the last week, refined Andrea's measurement to control the bandwidth, making it consistent between the two measurements. The ccd is demonstrably better than the qpd in terms of long-term drift (by a factor of 2 or 3, roughly) but still not quite as good as we would like.
- Tara is working on identifying the root causes of the apparent drift, and Eric is updating the design requirements document for the review.
From: Rick Savage <savage_r@ligo-wa.caltech.edu>
Subject: Pcal Weekly Report
- I prepared a summary of the AdvLigo Photon Calibrator project status for Eric. Gustafson, Mike Smith, et al. and presented it during the AOS call today.
- I have contacted Innolight regarding price and availability of their Nd:GdVO4 microFlare laser which runs at a wavelength of 1063.5 nm with an maximum output of about 1.5 W. This laser is a candidate for the AdvLigo Pcals. They also make a Flare laser with output up to 10 W, and I have asked then if they offer it in this lasing material.
- I discussed a feedback control strategy for generating sinusoidal modulated output powers with low harmonic content with Paul Schwinberg. He is working on a conceptual design for the servo.
- I requested some assistance from Craig Conley with mechanical drawings and designs. I will coordinate that work with Riccardo DeSalvo.
- I discussed scheduling and general Pcal plans with Peter Fritschel. We will work toward having the first article Pcal ready for installation in March 2011 for the single-arm test, in case that materializes.
- I plan to contact the Suspensions guys regarding Pcal initial alignment requirements which may materialize in the form of alignment marks or holes in the "frisbee" that will be used while the First Contact film is still on the test mass.
From: Phil Willems <willems@ligo.caltech.edu>
Subject: TCS Weekly Report
- We have been combing through applications for a new mechanical engineer position, and have interviewed one candidate for the job. We have also interviewed one candidate for a new TCS electronics engineer but found him to be unsatisfactory.
- We have debugged the electronics for a HgCdTe quadrant photodetector that we will use to characterize pointing drift and jitter in the TCS carbon dioxide lasers.
From: Eric Gustafson <egustafs@ligo.caltech.edu>
Subject: Weekly TransMon and Suspension Report
AOS TransMon Group Ken Mailand, Jay Heefner, Sam Waldman, Mike Smith, and Matt Evans
For the most part we are still working on the tasks we described last week. A TransMon design is still being worked with a new table optics layout and a preliminary suspension dynamics model has been completed, and will be updated when a new TransMon design has been produced.
From: Vern Sandberg <sandberg@ligo-wa.caltech.edu>
LHO -
Electrical - McCarthy
- Met with a representative from the factorized DC power converter industry about utilizing DC-DC factorized power chips in a custom rack supply for Adligo. He seemed to understand our unique noise requirements and as you might expect was quite anxious to provide us with a bid based on our specifications. I am trying to pin down a spec at the moment.
- Replaced cables associated with the HAM6 Suspensions. These are 50pin cables from the rack to satellite boxes by the feed through port at HAM 6. The supplied cables were 100' spools with the excess coiled up under Ham 6 the new are 37' with no excess under the HAM. This was done in an effort to eliminate any coupling that may occur due to cable length. After new cables installed worked with Danny A. in re-phasing and gain setting for the Magnetometer 60Hz feed forward filter. As you might expect the phase changed but also the gains were reduced.
- Assisted Vern in documenting Duo-tone signal paths in the LVEA.
Computing - Barker
- Jim Batch started as an LHO CDS software engineer.
- Autoburt was modified to not run while H1 is in science mode. It is still scheduled to attempt to run at one minute past the hour.
- The MSR IRIG-B timing source was changed from the h1daqctrl Brandywine IRIG-B receiver to the IRIG-B output from the Symmetricom NTP server. fb0c code change was required to take the leap seconds into account. h1daqctrl is now decommissioned.
- J Hanks built a new CDS SVN server at LHO. We are in the process of transferring files from the LDAS SVN.
- Work on building the new CDS file backup system is almost complete. A full backup of all files to tape was completed.
- Design of hanford1's raid upgrade is proceeding. Some of hanford1's disk partitions are over 95% full, and its 2TB raid will be replaced with a 12TB unit.
- Working with Abe Singer on the CDS CFEngine system to configure new workstations. We have 5 new Penguin workstations for the control room which we are setting up using this system.
LLO -
Hardware - C. Adams
- This week Jay H., Keith Thorne, and I began the assembly of the CDS DAQ test stand in the computers users room. Ran into problem with the I/O chassis not fitting into the rack with the rails so need to mount on shelf instead. Still need super micro, power supplies, timing installed to complete.
- Worked with AdL suspension team on BSC Quad test stand assembly and alignment. Progressing well, electronics working great. Some issues with the in vacuum cabling, however I believe we are working with pre-production items.
- Optical fiber was run from the optics lab to the MSR, and fibers are being checked out to the end stations. This will be used to repeat laser locking noise tests for advLIGO already done at LHO.
Software - Thorne
- Keith worked with Matt Evans to get LSC front-end code building set up again. This was to allow changes to the LSC (and OMC) code to make the timing of data transfer over the RFM more robust.
- The VME daq ctrl front-end got stuck again and needed to be rebooted. We are looking to follow LHO's replacement with a direct IRIG-B feed from the GPS/NTP server, once that hardware is commissioned.
- Sam's LLO HEPI VME-to-pcie conversion boards have been assembled and tested. Some redesign has to happen because of the new style of binary IO cards.
- A fourth set of 10 Pier Interface Chassis are being stuffed. This will bring the total to 40.
- We got back our 8-ch Valve Drivers from the vendor. They look good. Testing will begin next week.
- Mohana continues testing her newest Coil Driver, and has sent out a small run of the LED and Back boards.
- I continue working with Brian Lantz's Matlab files, for the gain and whitening appropriate for the GS-13 chain. I'm still talking with a vendor about getting the GS-13 in-pod cables made. I need to find a backshell like the one Sam specified in his drawings.
- Emery continues to progress on the in-vacuum wiring task. He is filling out a large spreadsheet with all of the cables we will need, and will make it searchable by cable type, chamber, device, etc...
- The 10 GS-13 Pre-Amp boards have been stuffed and tested.
- I have finished the pcb for the HEPI Anti-Alias personality board. It should go out for fab soon.
SUS - J. Heefner
Installation of the BSC test stand at LLO.
DAQ - R. Bork
Documentation and preparation for upcomming reviews.
ISC - R. Abbott
Completing measurements and documentation on comparison tests of FET-switched and diode-ring RF mixers.