Weekly Report for Week Ending June 9, 2005
The LIGO Executive Committee meeting for June 13, 2005 is
cancelled due to the meting of the LIGO Staffing Committee.
Special Announcements:
LSC Issues (Saulson)
No report.
LIGO Laboratory Administration (Lindquist)
STATUS OF LSC MOUs (Petrac)
LSC MOUs and Research Plans and Progress Reports
- No report.
Non-LSC MOUs
- No report.
SITE TELECONFERENCE (Lindquist)
A site teleconference was held on Thursday, June 9, 2005. The following items were among those discussed:
- Action Item #131, Convenience Check Limits--(vs PCard) problem mentioned during previous meeting, tried to get limit of $30K on convenience checks. After several iterations Caltech decided to go to $15K for site managers and $7.5K for site heads. They want to pressure vendors into accepting PCards and will provide assistance setting up accounts. They want to minimize use of convenience checks, which cause difficulties with auditors.
- TechMart is coming (out on June 20). Seems to be a hang up putting contract personnel on the approved list. We are working this issue.
- Landscape
Contractor for
- The list of assigned actions updated through March 10, 2005 will be found Here.
PROPERTY MANAGEMENT (Chargois)
>From: Ed Chargois <chargois_e@ligo.caltech.edu>
- Nothing significant to report.
DOCUMENT CONTROL CENTER
>From: Linda Turner - turner@ligo.caltech.edu>
- No report.
>From: Cleveland Mak <mak_c@ligo.caltech.edu>
- packages: in - 17, out - 6
- faxes: in - 22, out - 17
- Processed
presentations from LSC Meeting at the
COST SCHEDULE CONTROL SYSTEMS (Cunningham, Brambila, Kaufman, Salone)
>From: Esther Cunningham <esther@ligo.caltech.edu>
- For ACCOUNTS PAYABLE HISTORY DATA Press Here.
>From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
- Completed the change order to Northrop Grumman and routed it for approvals. Submitted it to the vendor for approval.
- Completed change order #3 to Ezus Lyon.
- Received the Release of Claims for Kratochwill and for MLD Technologies. The subcontracts were closed.
- Working
on the new agreement for the landscaping at
- Working on the new order to Go Engineer for software, license, and maintenance.
- Working
with
- Received a response from the last vendor that is interested in quoting for the actuators.
>From: Gina Salone <gsalone@ligo.caltech.edu>
- Nothing significant to report.
>From: Florence Kaufman <fkaufman>
- The monthly report for FY05 Operations and the report for the Outreach Award as of the end of May have been completed and are posted on the network.
- Sent out reports for the Visitor Program, Low Noise, MIT Grid, US India and DIA Awards.
- Provided comments re FY06 -08 budget model.
- Responded to request re computation of MIT's Indirect Rate.
- Financial
reports can be found at: http://docuserv.ligo.caltech.edu/~fireport.
(For passwords contact
SUBCONTRACTS MANAGEMENT (Petrac, Jasnow)
>From: irena@ligo.caltech.edu (Irena Petrac)
- No report.
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
- Discussions
between Ed Jasnow and the
- A modification is being prepared to the contract with the Exploratorium for the second group (Group B) of exhibits for LLO. This modification is in the amount of $496,614.00.
- Efforts are being made to convince current vendors at the sites to accept P-Cards. This is due to the fact that the limit on convenience checks cannot be raised above $15,000 for the site managers and $7,500 for the site heads. Also, there is the alternative of having the invoices sent to Caltech (Ed Jasnow) with a check processed to the vendors in three (3) days.
SUPPORT (Baldon, Hiroto, Lloyd)
>Irene Baldon
- PLEASE NOTE: Returned Monday, June 6th, from vacation and spent the better part of the past three (3) days catching up on e-mail (293 unread e-mails), putting out fires and generally organizing the outstanding workload.
- Processed the paper work for zero (0) new/revised trips. At this time there are eight (8) new trips that need to be completed and ticketed before the paper work can be completed; and there are twelve (12) ticketed trips that need to be processed, reservations prepaid by my P-Card and advance checks made out. Assisted several LIGO people with their travel arrangements using their P-Cards and made several reservations for outside visitors coming to LIGO/Caltech or one of the LIGO sites.
- Completed four (4) Expense Reports and there are seventeen (17) reports yet to be done. I continue to contact travelers who have outstanding Expense Reports (more than one (1) month old) to ask for their cooperation in sending me their receipts so that these can be closed in a timely manner. Presently there are three (3) reports more than 30 days old. Travel Audit's new policy of accepting only original signatures seriously holds up the process of closing reports. I have no reports awaiting signature at this time. Reconciled thirty-two (32) P-Card charges for the week requiring telephoning hotels and car rental agencies to verify which traveler used my card and for what amount.
>Julie Hiroto
- No special projects to report.
>Dorothy Lloyd
- Processed the usual invoices for payment. Tracked and followed up on invoice problems. Reviewed and recorded payments processed by Esther for the period of May 23 through June 3.
- Processed requisitions for standard purchases, payment requests and change orders. For more detail see Cost Schedule Control Systems report by Ruth Brambilla.
- Jim continued with data entry in the LIGO database and helping out in the DCC.
PROPOSALS and REPORTS (Lindquist)
LIGO must submit an Annual Report for Operations by August 1, 2005 and this annual report must be accompanied by a request for a two year extension (FY 2007 and FY 2008) as well as a justification for why Caltech/MIT should be continued in the role of management of LIGO. I have prepared and distributed a general outline and assignments. I have requested contributions by Friday, June 17, 2005. The outline and schedule were presented during the Executive Committee meting on Monday, May 23, 2005. I have also distributed a first iteration of a budget model for FY 2006, FY 2007, and FY 2008.
DCC Steering Committee (Lindquist)
We were given a presentation of the BTeV Document Management System on Wednesday morning. BTeV is not a commercial system. It would come to us free of charge, but we would have to install and maintain it. We are currently re-reviewing the requirements list in light of what we have learned while looking at five or so candidate systems.
CHANGE CONTROL/CONTINGENCY MANAGEMENT (Lindquist)
- No open change requests.
HUMAN RESOURCES (Akutagawa)
>From: Cindy Akutagawa <cindy@ligo.caltech.edu>
- A Staffing Committee Meeting is scheduled for Monday, June 13, 2005. The DRAFT agenda for the meeting has been posted. All files are posted and up-to-date.
Quality/Safety (Tyler
>From: Bill Tyler tyler@ligo.caltech.edu
Nothing significant to report for Safety and QA this week.
LIGO Hanford
Summary of Commissioning Activities at LIGO Hanford
The hunt for 10Mpc continues to be the highest priority task at LHO. High-power operation and thermal compensation studies were interspersed with WFS checkouts and investigations into seismic up conversion.
We had lengthy test point woes, described here and here, which hamstrung investigations for several days during the LSC meeting.
Hanford DOE types performed a drop test Thursday morning. A 4-tonne vessel intended to carry radioactive waste was dropped from a height of 7m in the 300 area. Both IFOs were locked and we'll look at these data for the calibrated pulse.
We may try pulling one of the ground connectors on LVEA building power. The test is intended as part of the suite of 60Hz and broadband (50-100Hz) noise investigations. The intent is to see if the ground impacts the broadband noise observed in AS_Q, and thus requires both detectors to be locked.
4K IFO
- WFS1 lens positions were modified and the appropriate Gouy phase achieved. WFS1 looks good and the optical gain is now restabilized.
- AS4 was problematic, saturating ASI_CORR. Later the detector was repaired and rephased. We are now once again running on all four photodiodes
- Thermal compensation studies: code to maximize the calibration line, and hence the optical gain in the cavities, was written and installed. The code adjusts the TCS heat a little, trends the calibration line strength, and then adjusts TCS as necessary. The process is a slow one, and thus not necessarily what we want to do during production running.
- Higher IFO power (6W) remains difficult (only 20m locks achieved), and we still have not found the proper WFS5 and ASI_CORR setting. Up to 4W running is more stable.
- Later in the week, a 4h lock at 5.8W was observed
- Gouy phases of WFS3 and WFS4 were investigated
- VME line investigation: lines seen in VME crates via magnetometers were still observed when the VME front key was turned off - power is still available to the fan.
2K IFO
- Like
the 4k, the 2k also has had bad settings on WFS1. For instance, the Gouy phase was wrong
- broadband noise limits are range to pre-S4 values; we're down under 3Mpc (recall S4 was about 3.5Mpc)
- ASPD1 was repaired
- MC transmitted power been moving sporadically for forty-five days
Outreach (D. Ingram)
The community's response to El Cielo en Mayo on May 21 was great, with roughly 350 attending. The weather was terrible.
We hosted a Livingston-sized group of 90 Pasco 6th graders on 5/25. Subsequent installation work brought the Giant Slinky on-line, completing our set of Exploratorium Exhibits
LIGO Livingston
Observatory (LLO) and Interferometer Operations (Zucker)
Commissioning overview (Frolov)
- The pre-stabilized laser optical table rework was the main interferometer commissioning activity this week. The power into the Mode Cleaner was increased to 8 W. The phase correcting electro-optic modulator was rotated by 90 degrees to follow the polarization flip on the optical table. The bandwidth of the frequency stabilization servo can now be set to the design value in the range 0.5-1.0 MHz.
- The dark and shot noise were measured in situ for the recently installed anti-symmetric port photo-detectors and the noise budget was updated. The angle to length couplings for the test mass were re-optimized (this update reflects the last coil driver modification).
- The measurements of the angular noise and the Michelson and power recycling cavity degrees of freedom noise coupling to the dark port are now automated for the use in the noise budget.
- The test mass suspension wire violin mode ringdowns were measured in various conditions. Different interferometer power levels, test mass angular offsets, and lock to lock variation were investigated.
- The measurement of the light scattered by the test mass was performed. The data is being analyzed.
LLO mechanical engineering (Spjeld)
LIGO Outreach Building
- Met with Mike Z and John Thacker; discussed revised kinetic façade design
- Redesign of truss, pendulum interface, roof-fender and lock in progress
- Plan on having manufacturing drawings for quote ready in 1-2 weeks
General Engineering
- Received one quote on HAM door removal tool; design awaiting approval
- Working on illustrations of BSC and HAM for new educational posters
Safety & Security (Riesen)
- Found and repaired bad input cabling in the LSS controller 02.07.13/14. The bad input was coming from the staging bldg. fire alarm panel. System fully operational (again).
- I now have access to all Laser Safety System archived message log data from 11-3-2001 to present. The message log data is now being backed up automatically on a weekly basis. Cleaned up the "input in alarm" messages that were generated during normal work hours, thus eliminating unnecessary message clutter.
- Performed IR scan on all 5 laser tables and found no errant beams.
- Found no site nor laser safety concerns this reporting period.
- Requested a re-quote for retrofitting the SB crane with soft start VFD's for all 3 axis.
- Did a site recon mission searching for fire extinguishers with out-of-date inspections. Found 4, they are being replaced with units with current inspections.
Optics & HPLF (Franzen, Amin)
HPLF news: Continued to develop a LabView code for monitoring and controlling the repaired 100 W laser. The code constantly checks that the current, power and temperature do not exceed certain boundariesin which case the emission is immediatley turned off. Hopefully this extra safety mechanism will minimize damage in the event of future problems. The code also logs these parameters so we can more in detail understand and prevent irregularities. So far it looks to be running fine and we plan to start testing a series of high power polarizers.
The required three quotes for tip/tilt mirror PZTs with electronics to be used for the REFL port beam stabilization system have been received and forwarded to Peter Fritschel and Rich Abbot who are in the process of placing an order. We discovered that the system we have chosen is actually being used at the Caltech 40 m instrument! They also provided us with some drawings for mirror mounting and more on which we will base our design.
Scatter:
Since mid-last week, I [Rupal] have been aiding Gregg Harry in acquiring scatter data from the large optics. Although data collection appeared to be a rather simple matter, unanticipated probelms arose. My primary difficulty was understanding Mr. Kell's analysis of the scatter data he obtained at LHO. Earlier this week G. Harry consulted with Giame and Zucker regarding the data collected. We will need to take data with perhaps a calibrated digital camera. At the moment, there is no data supporting the theory the LLOs large optics exceed the LHOs large optics.
PSL:
Beginning on Tuesday of this week, I [Rupal] have been assisting Rick Savage, Valery Frolov, and Vuk Mandic in PSL relay work. As seen in e-logs this week, we rotated the broadband EOM to match the polarization of the E-field eminating from the MOPA, tuned the PMCs MMT and periscope, changed and cleaned a few optics that were lossy, attempted to characterize the PMC, introduced large aperture Ca polarizers to the IOO EOM chain, tuned the FSS, and relocated the ISS PDs. At the moment, there is a possible 8 W of optical power available for the MC.
Initial LIGO Detector Science & Engineering (Coyne)
from Dennis Coyne
CDS
see also the CDS weekly meeting minutes in the commissioning archives
CDS Software
no report
CDS Hardware
Rich Abbott
- Designed and sent out for manufacturing, the panel and associated RF components to be used as the frequency distribution point for the ASPDs and ASI servo in the LSC rack.
- Began testing the 5/2 frequency multiplier system purchased from Wenzel Associates. Initial data shows extremely small amounts of sub-harmonic distortion in the RF output. More extensive characterization is needed. I will be measuring the input impedance of the chain, the amount of back generated harmonics, spectral purity etc.
- Did research for the Refl port beam stabilization servo to decide which piezo actuator to use. Putting through the purchase order.
- Wrote DCN and updated schematics for the LOS Bias module
Ben Abbott
1) Three
PDs are ready for testing, and more will be on their
heels.
2) I have some parts that need machining for the second wave, they will be sent to the machine shop tomorrow.
3) I have put together a final parts list, and will order the parts for the second wave this week.
DMT
John Zweizig
This week I continued to install the online version of the DMT software on the LHO DMT nodes. The installation is the first use on Solaris of the online autoconfigure/automake scripts prepared by Junwei and also the first major test of the development environment installed on the LHO machines after the recent software upgrade. There have therefore been a few bugs/inadequacies that are being addressed in the process.
PSL
PeterKing
Took delivery of a new Pockels
cell mount.
The optical train is still being set up after encountering some discrepancies between the predicted values of spot sized and the measured ones. The free-space beam propagation was re-measured.
Optic Micro-roughness Degradation
GariLynn Billingsley
We have determined that the micro-roughness of one LIGO optic (4ITM01, uncoated) has definitely changed by slightly more than a factor of two due to the cleaning process typically used just before coating. It is not yet clear how much of the current scatter seen at the observatories can be attributed to this type of change. It is also not yet determined if all LIGO 1 optics suffered the same degradation since this piece was subjected to aggressive cleaning.
ITMx, 4K Replacement Preparations
Helena Armandula
Document LIGO-T050094-01-D has been placed in the DCC detailing the
procedure used to bring close to specifications the AR reflection of
ITM05. The optic was cleaned and shipped
to
Liyuan Zhang, Lee Cardenas
The AR coating was etched. The final measurement for the AR coating is ~ 1000ppm.(goal 900ppm +/- ~300)
The AR uniformity, RMS/MEAN ~2.5%, as compared with last etched mirror 2itm03 with a uniformity of ~20%
http://www.ligo.caltech.edu/~lzhang/4itm05/4itm05_arr_4_r1.pdf
During final clean up,
The mirror will be packed and shipped to LHO.
40 Meter Interferometer (Weinstein)
IFO commissioning:
- Rana finds that he is able to lock the entire IFO with minimal tuning, even after a day or two with the IFO unlocked. It locks in less than 5 minutes; then with a little alignment tweaking it locks repeatedly in less than a couple minutes. So it seems the interferometer is actually very stable and we don't have to do any serious tuning each day.
- Rob has produced Finesse models for CARM and DARM to verify the behavior of the IFO with all 5 degrees of freedom controlled, but with CARM offset from arm resonance. As the offset is reduced, the coupled-cavity pole is reduced and passes through the CARM servo UGF, and lock is lost. The RSE peak moves accordingly. His model seems to explain the behavior, and the features of the CARM and DARM OLTF's, qualitatively well. This will help in designing loop filtering to minimize or eliminate the problem.
- Rob and Rana found that it was easy to transfer control of DARM to the RF signal at AP 166Q. In the LA mode #6, the DRMI is controlled by the RF signals and CARM & DARM are controlled by common and differential combinations of the arm transmitted QPD signals. Although CARM is now locked far from resonance, DARM is at the carrier dark fringe. They were able to use a script to do a smooth handoff of DARM control from the DC to the RF signal at AP166_Q. They did this several times; there is no transient. So now there's just one more signal to switch to RF: CARM.
- In preparation for a systematic diagonalization of all the suspended optics controllers, Dan and Steve are measuring the POS, PIT, YAW and SIDE pendulum frequencies of all 10 suspended optics, freely swinging. There are a variety of anomalies. For example, the POS and SIDE frequencies are well separated, with the SIDE frequency a bit higher than POS, but on the SRM it's the other way around... under investigation.
- Rana implemented and tested scripts to do automatic align/misalign of the IFO optics, as well as saving and restoring of alignments in each of the many different IFO contfigurations that we operate at. (Xarm, Yarm, Michelson, PRMI, DRMI, & Full DRFPMI). He also created and exercised a script for setting the MC WFS UGF. He also copied over some IFO Configure screens and scripts from LLO, and is automating the IFO down steps and the current lock acquisition steps.
- Steve has recentered all of the oplevs, and the arm transmitted QPDs, to Rana's alignment of 6/6/05.
- Monica continues to work on a report about calibration of length sensing and excitation signals.
IFO modeling and DC detection development:
- Monica continues to work on measuring error signals slopes in her e2e 40m simulation, and verify the Twiddle and Finesse predictions for the signal.
- Monica gets good agreement between e2e and Twiddle/Finesse for the length sensing signals from AP33Q and AP166Q, but not so good from SP33I and SP166I. The discrepancy is likely due to the demodulation phases, so shee is trying to implement in e2e the algorithm used in Twiddle to calculate the optimal demodulation phases.
- Monica is working on e2e simulation of the OLTF's for all the length control paths in the 40m IFO.
- Monica and Virginio are working towards being able to plug the length sensing and lock acquisition code in use on the 40m front end (developed and maintained by Rob) directly into e2e. It is, of course, not an easy task. They will work with Rob, and with advice from Hiro and Matt.
Electronics, controls:
- Ben
tested the readout of a single
- Heat sinks have arrived for the I&Q Demod boards. Ben will install them soon.
- Ben disconnected the superfluous Earth GND connecting the Racks with the shutoff switch panel. Now there are only three wires hooked up at both ends, the isolated hot, neutral, and earth. The rack is no longer tied to the local earth through the extra GND wire. This should help reduce ground loop problems.
- The IOO PZT steering board was not functioning correctly, so Ben brought it back to the back shop, and fixed it. He then hooked up the IOO steering PZT to the PZT Driver, and now it is possible to steer the input beam from the control room.
- Our LSC cpu is dangerously close to max (61 usec) in some configurations. Rana deleted nearly every unused filter in the LSC filter file. The total CPU time recovered is 4 microseconds.
- Bob ordered insulating panels for the optics tables (in our ongoing effort to reduce ground loops) and has given them to the machine shop for cutting and drilling.
- Rana and Jay fixed an apparently dead OSEM sensor (MC3 UL) by unplugging- and replugging the connector. The connector wasn't screwed in; we need to install screws on all of these.
Thermal Noise Interferometer (Black)
No report.
LASTI (Ottaway)
From: Richard Mittleman
We have been investigating the BSC structural noise enhancement in the 10-20Hz range. The current best theory is that the flagpole resonances of the vacuum, chamber are coupling to the support structure through the floor. We have mapped out the motion of the floor when driven by a 10kg mass driver mounted on the vacuum chamber. This data will be used to validate a FEA model, which is being developed. There are a number of data plots displayed on the Lasti ilog over the last week.
We have been making progress on the model, which now runs in Nastran.
The solid stack assembly has been completed and assembled at the fabricator. We are evaluating which cleaning technique will be used.
The design is complete for the LASTI test stand. Fabrication drawings are being made.
Data Analysis and Computing (Lazzarini)
Simulation and Modeling (Bhawal)
Commissioning Support
(Biplab) Worked on correcting Gouy phase Telescope set-up with Keita for H1 interferometer's Wave-Front Sensor1 (WFS1). Analyzed other WFSs as well. Conclusions are (details-> see elog June 7).
(A) No change necessary for WFS4 Gouy telescope.
(B) To improve signals in WFS2 and 3
(i)WFS2: Better to change from current setting of 180deg to 145deg
(ii)WFS3: Better to change from current setting of 10deg to 150deg
Advanced LIGO Simulation
(Matt) Started analysis of SimADL (Advanced LIGO simulation) optical path lengths, resonance conditions, and control possibilities. Once things are in order I plan to implement a control scheme similar to the one in use at the 40m.
Simulation of 40m Advanced Interferometer
(Monica: Last Week) The pick-off port has now been correctly implemented in the e2e package for the 40m,i.e, the extra losses due to the AR coating (600 ppm) have been added. Also an e2e box to include the AR coating on the mirrors has been created but it is not necessary to implement in the simulation at the moment.
(Monica: This Week) Error signal slopes have been calculated to verify Twiddle and Finesse predictions for the signal extractions matrix: still under investigation. The algorithm used in Twiddle to generate the demodulation phases is under study and will be implemented in e2e 40m package as SP33I and SP166I channels don't match like the AP33Q and AP166Q for which the demodulation phases are exactly 0 e pi/2. The simulation of an open loop transfer function of the full interferometer is under test. An attempt to understand how to plug and play the real 40m lock acquisition code in e2e 40m package has just started.
Code development
(Hiro) Still working on modeler for adv.LIGO. A version was tested by Matt and several issues were found and fixed or being fixed. Fast dual recycling module is being coded based on the matlab code.
Alfi
(Bruce) There are several areas in the Alfi's main object, ALFINode which can be made more efficient to speed response and save times. This is what I am working on now.
(Melody) Finished with the user interface to allow the user to choose the display for nodes: graphic, node name, or a multiline description. Worked on allowing primitive nodes to be able to display an icon from a jpg or gif file. Continuing with fixing the Problem Reports(PR). Currently fixing PR 473: Duplicated item placed outside of view.
Data Analysis Activities (Lazzarini)
Mandic:
I made a first attempt at the stochastic analysis of the S4 data. The analysis was done including a time-shift in one of the detectors, as the main goal at the moment was to study the data quality and to define the necessary cuts, rather than to obtain the final estimate. The H1L1 pair seems very clean, with the theoretical error of about 2.2e-5 over about 14 days of exposure. The H1H2 result was not so clean - even the aggressive notching of coherent lines, and including a time-shift, yields a 10-sigma result (with the theoretical error of about 2.4e-6).
I continued studying accessibility of the pre-Big-Bang models to LIGO. I started writing up some of the results.
Sutton;
I spent most of the past week at the LSC and burst group meetings in
Shawhan:
- Attended
the LSC Meeting and Burst Group face-to-face meeting in
- Made final edits to the S2 LIGO-only untriggered burst paper before submission to Phys. Rev. D.
- Reviewed pulsar analyses.
Weinstein:
- Lots of Inspiral review activity
- Trying to run Javi's h(t) code
- Working with Lisa on ringdown search
LIGO Data Analysis System
Software Systems (Blackburn )
Significant effort was put into the LDAS account management scripts to fix some long standing issues. The default length for an account now is 2 years (pr2808). Applying for an extension extends a user's account for a year (previously 6 months) provided the extension would not cause the user's account to be valid beyond 2 years from the day they apply for the extension. Also, a user is now forced to select at least one site (pr2801) when applying for an account. Finally, if a user's full name has an apostrophe (ex: O'Neil), the url sent to the LDAS account administrators no longer gets truncated (pr2798, pr2797). This allows the administrator to click on the link and get a web browser started to finalize the request.
The index.cgi script which is responsible for generating the site’s home page for LDAS has been corrected to prevent the generation of a log message about an undefined variable being used (pr2512). In addition to this, a favicon.ico was generated for LDAS to prevent the web server from complaining about its non-existence.
The frameAPI has been extended to understand many file types (pr1904). The check is only performed if a frame file is opened and corruption is detected. This allows for easier diagnosis of the common problem of trying to use the frame library on non-frame files.
All references to ERR have been removed from the LDAS code base (pr2820). This is the only known issue that was discovered as users tried compiling frameCPP under Solaris 10.
FrDumpObjects has now been extended to dump the FrTOC structure (pr2822).
The ilwd library no longer hangs on ilwd files that do not start with <?ilwd?> (pr1349).
Fixed the parsing and updating of multiple line resource file variables associated with Problem Report 2837 by making code changes to both the server and client code for the controlMonitorAPI, also required changes to the genericAPI.
Modified the display code for running all user commands from the controlMonitorAPI's client so that intermediate results are color coded in the test results page.
Completed system and integration testing of LDAS version 1.6.3 on the LDAS-DEV system. No issues found.
Updated the Tandem 3, 4, and 5 developer's test systems to be able to run the 1.6.x series of LDAS versions. Tested with integration and systems tests and discovered a ICMP permissions problem for ldasbox3 (part of Tandem 3) which is currently being worked on by system administrators.
TCLGLOBUS
Version 0.2.0 of TclGlobus was constructed this week. It fixes all know issues with failed tests, memory corruption, and memory leaks found in the 0.1.0 release. It also now supports Globus 4.0 (GT4) in addition to Globus Toolkit 3.2. The dependency on the TCL thread library have been removed, greatly simplifying the distribution. It has now been shown to work with out-of-the-box Redhat 9 and Fedora Core 3; No custom installs of tools necessary. This is well in advance of the July 1 deadline set by the DASWG for distributing 0.2.0.
The TclGlobus Project's development hardware is being upgraded this week to Support multiple versions of Linux, starting with an upgrade to Fedora Core 3. As a result the announcement of the 0.2.0 release will be delayed until the box is back on line since it is used to distribute the code.
OSG / GRID COMPUTING
David Meyers has joined us to work on Grid Computing and in particular on
the Open Science Grid Integration Testbed activity.
David comes to us from NASA Ames where he carried out similar Grid Computing
activities for NASA. David has completed his navigation of the Caltech new
employee processes and worked with
The OSG Consortium Meeting hosted by UWM's LSC Group was announced this week. The meeting will take place July 20 and 21 with an OSG Council Meeting follow on for July 22.
Hardware Systems (Ehrens for Anderson
[Dan Kozak]
- (from the week before) Converted CIT /archive to use md devices, upgraded SAM on dataserver-cit/ldas-cit to 4.3.11, upgraded 3510 firmware to 4.11I, spent a long time debugging problem with a wedged logical volume on the 3510 with the /archive metadata and /export.
- Did some cleanup related to the dataserver-dev root disk failure (putting in necessary NFS exports mostly)
- Moved 2 9940B tape drives to controllers 8 & 9 (from 2 & 3) on dataserver-cit
- Checked for logical volumes on 3510s at L?O: there were none
- Discovered failed 3510 controller at LLO and had Igor call it in to Sun
- Fixed some wedged Linux NFS clients of /archive
- Freed up some tape slots at LHO, working on doing more
- Replace 4 failed 3510 disks at CIT
- Continued cleanup of /archive at CIT (merging in tapes shipped from LHO with postS3 data, among other things)
- Dealt with big CIT /archive failure:
The first problem I noticed was:
Jun 8 15:58:44 dataserver-cit samfs: [ID 889405 kern.notice]
+NOTICE: SAM-QFS: archive: sam_wait_space: File system full -
followed by lots of these:
Jun 8 16:03:27 dataserver-cit samfs: [ID 509738 kern.warning]
+WARNING: SAM-QFS: sam_bread: bp=304b7053960, blkno=5ae0, dev=7600000090,
+count=16384, error=5
and then dataserver-cit rebooted itself.
It seems that the 3510 that holds the /archive metadata and ldas-cit's /export disappeared from the fabric briefly. I ran samfsck -F on /archive when it came back up then remounted it (two empty directories were all that showed up in /archive/lost+found). FrCheck of a few of the last LDR transferred files all passed. /export needed to be remounted, /scratch didn’t complain (probably no filesystem activity during the time that the 3510 was offline). The SAM-QFS shared clients all required that sam-fsd be killed so that a new sam-sharefsd could be started. I had to remember to restart the NFS server on dataserver-cit (/archive wasn't mounted when the system came up, so it didn't get exported so the NFS server didn't start...I think) and now the cluster users can see their home directories again.
My guess is that this was caused by the work I was doing on 3510-10 (the test unit) which had managed to get itself into a number of odd states and was connected to the main switch at the time. I've disconnected it from the switch and left it direct connected to olddataserver-cit only.
- Restarted all of LDR on ldas-cit after /export & /archive were back online (all the daemons had died off).
[Phil Ehrens]
- Received warranty replacement memory for ldas-cit node218 from ASA.
- Built and configured machine 'Verruca' for Dave Myers.
- Built and configured machine 'Spud' for Diego Fazi from chassis and parts of decommissioned machines.
- Built and configured machine m71 - this machine had been set aside due to unreliable behavour, it would crash daily. It turns out that the dimm in socket 1 was bad. I replaced the bad dimm and ran memtest, and it is now a happy machine. Upgraded the cd-rom drive to a dvd drive, replaced the non-functional floppy drive, and upgraded the HD from a 10 and a 20 to a refurbed 160.
- Replaced drive 0:6 in datacache6.
- Created a schema for backing up Linux installations that does not require similar geometry on the target drive. The mbr, partition metadata, and individual partitions are stored in compressed form and can be installed either via dd or by mounting them as loop devices and copying them. Still some work to do to automate the backups fully and to integrate ssh for backing up (and restoring) over the network.
- Observed Dan Kozak's valiant retrieval of the dataserver-cit filesystem, and assisted minimally.
General Computing (Wallace)
MIT:
(Keith)
- Rebuilt and patched late model thinkpad (570)
- Built new print spooler (LPRNG) on emvogil-3
- Replaced emvogil-3 Ultra10 with SB1500 to host new web address
- Moved CVS and ilog repositories over to new machine
- Rebuilding ancient thinkpad (560E)
- Building backup ldap slave server
- Ordered new laptop and assoc. equipment
- Added several more urops
- Added new grad student (Jared Markowitz)
- Reinstalling / patching Optiplex 260 desktop (XP) for lab use
Livingston :
(
See LLO report.
Hanford
(Christine)
- Network usage can be seen at http://www.ligo-wa.caltech.edu/~christin/mrtg/ 198.129.208.1_198.129.78.122.html
- Spoke
with PocketiNet about providing our backup
network. They are working on a
proposal and have suggested a wireless network into
- Setting up computers, user accounts, office space and extra printers for use by the SURF students and visiting teachers.
- Re-building a laptop for the loaner pool with dual boot Windows XP and Fedora Core 3.
- There are more old computers and monitors that will be disposed of later this month when Ed Chargois visits. I have to label which ones are to be disposed of and which are to be kept as spares.
- Helped two users with e-mail problems. Reset the password for one user. Ordered some ergonomic and optical mice. Requested CDs for the latest version of Mathematica. Other misc. user support.
CIT:
(Mike)
- Linda Turner: Worked on an e-mail issue with Larry on Linda's laptop. This issue seems to be resolve for now.
- Visitor Workstations: Loaded two more PC workstations for visitors one for Millikan, and the other Bridge Annex.
- Loaner laptops: Reloaded two laptops for the loaner pool I am still loading software to complete these units to have ready for loaning purposes.
- Spam Filters: This week was more than the usual spam, which required much more spent time on this job function.
- Barry Barish: Problems with his laptop freezing up. After trouble shooting this issue, it turns out that the motherboard needed to be replaced. This has been taken care of.
- IP Database: Spent some time updating the info on our Database. I have a lot of work left on this project.
- Millikan: Larry and I ran a couple of network cables in the Server Room from the CIT/LIGO Network Closet. This is for the new "copier/scanner/printer" that is in place of their old one. Set this up on Irene Baldon's workstation to load drivers to run test to insure that this unit is working correctly.
- User onsite/phone support that included loading additional software, printing, e-mail, and some software issues.
(Veronica)
- LIGO: Finished the updates to the AdvLIGO Project Schedule subsystem webpages. Prepared a set of high-resolution images for a popular science magazine. Updated the roster database.
- LSC: Updates to the June meeting website. Posted the meeting presentations. Updates to the 'papers under review' webpages.
- CaJAGWR: Troubleshoot the account's email to use IMAP rather than POP. User support.
(Bruce)
- (BS) Ilog Development (1.5 days)
Incorporating many requests made over the past few months. Especially in regards to the ability for users to easily place more than one image in an entry.
(Larry)
- Worked a number of procurement issues. Mostly, cleanup and checking on some maintenance contracts. Working the IDEAS licensing. There is some confusion on what has been delivered and licensing. Hopefully, this will all be cleared up by the end of next week. It appears that we will need a couple more PC's for the developer group.
- Still working logistical issues with PMA and the air-conditioning construction group. Things are getting down to the testing time. Waiting for a report on the augmentation of the air-conditioning in the computer room.
- Working on the systems for the E2E group. The machines needed to have the disk drives moved to new locations because of heating issues. This took more time than planned in that a good portion of the machine needs to be taken apart to get to the disk drives. Two units have had the hardware changes made and presently installing the OS. The OS installation on one unit has not been a fast one. It will be reinstalled just to make sure something has not been missed.
- Assisted Mike on debugging and checking out a number of PC's for different users. He's been swamped getting systems ready for the SURF students.
- Setup a couple of new user accounts and working on cleaning a few more off.
- Tested out a couple of SCSI drives. So far they have passed the diags and one has been formatted for installation.
- Assisted
- Worked on some documentation and the yearly report.
- Worked a number of e-mail issues. Mostly retrieval for different users.
Mail Statistics Jun 02-08, 05
Rejected Messages 21,629
Virus Messages 1,867
False Positives 364
Accepted Messages 14,091
Total Messages 35,720
Advanced LIGO and Supporting R&D (Shoemaker)
Systems
from Dennis
Coyne
See also:
Records of Decision or Agreement (RODA)
See also the RODA
status web page
- nothing new
Requirements
- Issued the "SUS Universal Requirements Document", T000053-02 (Janeen & Dennis)
- Issued the "LIGO Generic Requirements and Standards" document, E010613-01 (Dennis)
- Jay Heefner has been writing requiements and interface definition for the SUS Electronics/UK PDR to be held Tue 7/12
Interface Issues
See the "Interfaces" section of the AL Systems web page
- Have been collecting interface requirements & data for the SUS incremental PDR review on the BSC Quad (focused on requirements) on Wed 6/15
Vacuum Compatibility
Residual Gas Assay (RGA)
See also the Vacuum Bake Lab
Bob Taylor
- I have finished the bake jobs on the AL OSEM Emitter & Photodiodes and will give them to Lee.
- I repaired the SRS RGA on oven C.
- I ordered the shielding for the OSEM leads on the Quad Suspension. I should receive the shielding wire this week.
- I have shipped four Turbopumps to Leybold for repair.
- I have disassembled the Vacuum system plumbing and am awaiting the return of the turbopumps to finish the repairs of oven C.
- I
have been working with
High-Irradiance, Contamination-Exposure Cavities
Lee Cardenas, Liyuan Zhang
[Remainder of Systems Report Corrupted]
From: Jay Heefner <jay@ligo.caltech.edu>
AdL CDS
Testing of the AD7679 shows that the input referred noise of
the device is on the order of 100nV/rtHz for frequencies greater than 200Hz
with a sample rate of 570Ksps. The floor may be lower, but the input amplifiers
provided by Analog Devices on the evaluation board have a similar output noise
level. The amplifiers will be changed and the noise around 100Hz will be
investigated. Testing was done using the AD7679 eval
board connected to a LIGO designed FPDP interface to a Pentium processor. The
interface is easily able to handle the 570KHz, 32-bit
transfers. Note: the ADC is 18 bits, but the FPDP interface is 32 bits wide.
Seismic Isolation
From: Ken Mason kmason@ligo.mit.edu
No report this week
From: "Joseph A. Giaime"
jgiaime@ligo.phys.lsu.edu
Agenda from the weekly SEI phone call
Electronics (Jay)
- ADE
has 4 fine sensors, but Jay hasn't got feedback yet from them.
- Other
4 fine sensors hooked up at Caltech, and look similar to other ones (24 Hz
bump). During warm-up, bump moves
from 40 -> 24 Hz or so.
- Cabling:
Ken sent routing info to Jay; they need to study that it will work. We should have a reasonably detailed
plan and drawing of the cable routing before releasing the mechanical
drawings.
HAM diagram changes (Dennis, Rich, Brian O)
- Team
has agreed on a new diagram. Brian
O'Reilly will ask Rolf to make the changes.
BSC Amplification (Rich, Pradeep)
- Rich
has analyzed the TF from the flange -> floor force -> displacement
experiment, and has posted an early result from this. Matlab
function 'griddata' has proven to be useful in
dealing with data of odd frequency spacing.
- He
has also posted data of the noise enhancement between the pier and the
crossbeam at MIT and LLO. The
enhancement is smaller at LLO, but the peak frequency is lower.
- Dennis
has posted his notes from earlier analysis of the LLO and LASTI floor and
pier resonances.
- LASTI
test stand (Ken)
- Ken
has posted drawings of his LASTI SEI/SUS test stand. He plans to complete the FE models and
analysis in the coming week. The
system need the ability to match the bumpy floor and yet have parallel and
level mounting bosses on the mock support tubes.
- Modeling
for softer springs (Brian L.)
- Brian
has assembled a dynamic model using the June '04 ASI design parameters
(i.e., the 8 cm offset between the CG of stage two and the actuator plane
in stage 2). His model is still
numerically unstable, so he's doing brain-stretching exercises to
visualize the 300+ state system. At the moment he still feels that we
won't reach the 2 × 10-13 m/√Hz at 10 Hz, largely due to the
measured excess HEPI platform noise at 10 Hz.
- Joe
needs to redo his noise estimate curves from the review in light of
Brian's results, and more carefully taking into account the vertical noise
expectations.
Procurement:
- We
still need to produce a procurement plan for the mechanical parts (KM, to
be evaluated by DC)
- KM
& JG need to negotiate with ASI an amendment to their contract to
rework the spring geometry. This
should be ready to go so unnecessary delay doesn't accrue when we set the
new blade parameters. See SEI log
entry 430 for the large spring shape discussed at Stanford and drawn by
Corwin in April.
From: Jay Heefner
<jay@ligo.caltech.edu>
AdL SEI
ADE has found the source of the 24Hz noise peak on the capacitive position
sensors. It is related to a circuit instability caused by the larger probes we
ordered. They are retrofitting the 4 units that we originally sent them to
test. We have also sent the other 10 units back for retrofit.
Suspension
From: Janeen Romie
<romie_j@ligo.caltech.edu>
Advanced LIGO Suspensions
- Working
on the Universal SUS DRD.
- Placing
POs for some of the final suspension parts. Following up with the two
campus machine shops for parts.
- Working
with Carol and Dwight on SUS organization in the cost book.
- Worked
with Justin and Dennis on Justin's requirements issues.
- Submitted
a PR to purchasing for 2 Solidworks seats and PDMWorks for all seats.
From: ctorrie
<ctorrie@ligo.caltech.edu>
SolidWorks and PDMWorks
We have now moved to SolidWorks 2005 and PDMWorks 2005. This was to allow us to come into line with
new collaborators who have purchased SolidWorks
recently. These include the Physics machine shop at Caltech,
Quad Suspension
We are waiting on one part of the wire jig to be modified to allow us to
re-make the wire for the upper intermediate stage,
once this is done we will again look at the clamps used in this stage,
reference design meeting for more detailed discussion. The lower structure face
plates, with an off-campus shop, are progressing well and we plan to visit them
next week. The upper structure has had some manufacturing problems recently but
I believe we are now overcoming these and one of the structures is partially
welded.
Design Meeting
http://www.ligo.caltech.edu/~ctorrie/QUAD_ETM/quad_etm_setup_page2.html
Visit to Glasgow
I visited
Tim Hayler will also visit for a week later this
month and hopefully Ian Wilmut will come for a week
in July.
From: Ken Mailand
<kmailand@ligo.caltech.edu>
- Will
meet with Helena and Bob tomorrow to finish the 40m oven qualification
specification. The large bake oven
for the 40m Lab is on schedule for delivery.
- Mike
Gerfen is adding some hole and tap features to
the two test plates to make them identical as possible for the FTIR test.
- Adv.
LIGO large part oven / cleaning station spec. modified, and responses expected
later this week re. price and delivery estimates.
40m
Mike Smith’s lens focuser assembly parts delivered complete.
From: Jay Heefner
<jay@ligo.caltech.edu>
AdL SUS
Writing requirements documents for AdL SUS
electronics designs.
Core Optics
From: Gregg Harry <gharry@ligo.mit.edu>
We are continuing to measure modal Q's on the CSIRO silica/tantala coating with the commercially polished
substrate. So far we have:
Mode Freq Q
Drum 4151.27Hz (3.44+/-0.05)E5
13th 9383.35 (3.42+/-0.09)E5
14th 10557.94 (3.69+/-0.07)E5
These are a bit higher in Q than the equivalent CSIRO super polished sample. That would seem to indicate that the
substrate polish isn't playing much of a role, and the slight improvement may
be due to maturation of CSIRO's coating process.
From: Helena Armandula
<ahelena@ligo.caltech.edu>
Synchrotron Modular Clean Room
The Synchrotron lab was cleared to make room for the clean room installation
that was supposed to take place on Wednesday. An unforeseen mishap with a
Boeing clean room installation postponed our job until this coming Friday. The work is now expected to be finished by
next Wednesday.
Optical Cavity Vacuum Testing
MMG nickel plated Nd-B-Fe magnets that were
cleaned and baked were delivered to be tested for vacuum qualification.
New Air Bake Oven QualificationObtained an estimate
from JPL of ~$1K to run FTIR analysis to detect molecular contamination on a
"fired cleaned" piece of aluminum. The aluminum part will be provided
by JPL and is certified "clean". They will also perform a particle
count and particle identification analysis for which they'll provide a
certified particle free wafer.
From: Bill Kells
<kells@ligo.caltech.edu> :
- Conflicting
observations and measurements keep accumulating on the amount and origin
of the LIGO I arm cavity loss (and therefore the Net HR coating losses.
Adding to this is the recent result that one (uncoated) TM has been
measured to have significantly increased micro roughness (since its
original polish.... having been cleaned meanwhile). We are going into a
review of all the mapping, scattering loss, FFT modeling, and other
analysis to make sure there is consistency. Then, concomitantly plotting
new measurements to resolve the puzzles.
- Once
again the parametric instability (for arm cavity resonant light) has become
topical. Various people ( P. Willems,
Pre-Stabilized Laser
From: Peter King pking@ligo.caltech.edu
An mail alias was set up for the lasers working
group. I have not tested it out as yet.
Auxiliary Optics
From: Michael Smith <smith@ligo.caltech.edu>
BS DIFFRACTION LOSS
An updated technical report is being prepared.
SURF
I prepared a work area in the LIGO optics lab for the BRDF experiment and
the Oplev receiver experiment. I procured and
borrowed most of the equipment needed. Still pending is the purchase of a PDA
255 photodetector, the read-out display for the oplev QPD, and an AOM @ 40MHz.
The housing for the optlev receiver was made by
the CIT shop. All lenses were ordered and most are received. Two fixed-focal
length configurations will be built and evaluated: 33460 mm EFL, with an
angular semi-field of view of 150 microrad; and 13660
mm EFL, with an angular semi-field of view of 360 microrad.
The lens assemblies are approximately 300 mm long.
Other Laboratory R&D
From: Riccardo DeSalvo
desalvo@ligo.caltech.edu
Juri
I made several checks of my calculations for coating thermoelatic
noise, using the infinite mirror formula found in literature and using two
different approaches to the calculation of dissipated energy. Now the program
is running with a Flat Top beam sampling the surface of the mirror. Actually I’m calculating the thermal
noise for different test mass aspect ratios and beam radii keeping the total
mass and diffraction losses fixed. Results will be soon available, at least for
fused silica substrate.
Chiara
Going trough the measurements to test the horizontal
attenuation system; now I’m using two accelerometers and a spectrum
analyzer in order to measure the transfer function of the apparatus. For a better excitation of the bottom plane
we have leaned it on two cylindrical bars instead of fixed supports. Still taking classes in the Machine Shop.
Marco
Finished measurements of beam characteristics with Gaussian beam and the new folding mirror. Switched to Mex hat mirror. Tuning up.
Special Late Breaking News (Riccardo)
During this afternoon we were able to adjust the input-cavity alignment and get the first pseudo-mesa beam profiles (mirror # 05008). I attached a image grabbed by the camera. The lock was very stable. Cavity resonance is very sensitive to the input beam position. I took different profiles with different piezo-tilts.
For additional information about this report, contact Phil Lindquist