The LIGO Executive Committee Agenda for Monday May 24, 2004 will be:
(Meeting time: 10:30 am Pacific Time)
Special Items:
no report
Status of LSC/MOU
Research Updates and Program Reports (Petrac)
No report (leave of absence).
LIGO Weekly Site Telecon
(Lindquist)
A site teleconference was scheduled Thursday, May 20,
2004. The following issues were among those discussed:
The list of current actions revised to reflect the status of
open actions assigned through the last update (March 4, 2004) may be found at ACTION
LIST.
PROPERTY
MANAGEMENT (Chargois)
From:
Ed Chargois <chargois_e@ligo.caltech.edu>
DOCUMENT CONTROL CENTER (Turner,
Mak)
>From:
Linda Turner - turner@ligo.caltech.edu>
Web pages for the DCC give simple
how-to's for document numbering, easy access to the latest on-line documents,
and search capabilities for the DCC database. Take a look.
. .
ACCOMPLISHMENTS
> From: Cleveland Mak <mak_c@ligo.caltech.edu>
ACTIVITY
|
05/20/04 |
Packages |
Faxes |
|
In |
26 |
36 |
|
Out |
14 |
19 |
Press here to access the DOCUMENT
CONTROL CENTER WEB PAGE.
COST
SCHEDULE CONTROL SYSTEMS (Cunningham, Brambila, Kaufman, Salone)
From:
Esther Cunningham <esther@ligo.caltech.edu>
No report (vacation).
Press here for ACCOUNTS
PAYABLE HISTORY DATA.
From:
"Brambila, Ruth" <Ruth.Brambila@caltech.edu>
From: Gina Salone <gsalone@ligo.caltech.edu>
<!--[if !supportEmptyParas]-->
From: Florence Kaufman <fkaufman@ligo.caltech.edu>
Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport.
SUBCONTRACTS
MANAGEMENT (Petrac, Jasnow)
From: irena@ligo.caltech.edu (Irena Petrac)
From: Ed Jasnow <jasnow@ligo.caltech.edu>
SUPPORT (Baldon, Lloyd, Tischler)
>Irene Baldon
>Dorothy Lloyd
ADVANCED LIGO (Cost Schedule Control Systems) T. Frey
From: Thomas Frey <tfrey@ligo.caltech.edu>
For list of documents that are
being used to develop Adv. LIGO Cost and Schedule, see http://www.ligo.caltech.edu/~tfrey/Cost_MTG_082002/
Prepared an Advanced LIGO schedule
report / cost profiles for FYs 2006 - 09, that shows planned work between those
dates. This was requested by Phil L. for discussion with Stan W.,
regarding on-going discussions with the NSF.
Accomplishments:
·
The following is a summary of status by sub system:
§
COC - http://ligo.caltech.edu/~tfrey/COC_AdvLIGO/COC_index.html
§
Still need completed WBS dictionary and BOE.
§
PSL - http://ligo.caltech.edu/~tfrey/PSL_AdvLIGO/PSL_index.html
§
Comments / formal acceptance pending.
§
http://ligo.caltech.edu/~tfrey/PSL_AdvLIGO/CB_rev_041304/
§
AOS - http://ligo.caltech.edu/~tfrey/AOS_AdvLIGO/
§
Executed telecom with Carol, Mike S., and Phil
W. Most current baseline schedule is posted.
§
Working on revisions to the baseline schedule, cost
book, and WBS dictionary per this weeks telecom.
§
IO - http://ligo.caltech.edu/~tfrey/IO_AdvLIGO/IO_index.html
§
Still need completed WBS dictionary and BOE.
§
Working on revisions to the baseline schedule and
WBS dictionary per previous telecom.
§
SUS - http://ligo.caltech.edu/~tfrey/SUS_AdvLIGO/SUS_index.html
§
Met with Janeen and discussed the BSC task list.
§
Review of BSC task list on going. I am to
provide Janeen with changes for functionality.
§
SEI - http://ligo.caltech.edu/~tfrey/SEI_AdvLIGO/SEI_index.html
§
ISC - Comments / Data pending from Dennis C. and
Peter F.
§
LDAS - No action required at this point in time.
§
INSTALL - No action items pending.
§
DAQ - No action required at this point in time.
§
PM - No action required at this point in time.
§
FAC - No action required at this point in time.
§
SUP - No action required at this point in time.
§
LASTI - http://www.ligo.caltech.edu/~tfrey/LASTI/lasti_index.html
§
40-Meter - http://www.ligo.caltech.edu/~tfrey/40m/40m_index.html
§
TNI - http://www.ligo.caltech.edu/~tfrey/TNI/TNI_index.html
·
ROSTER DATABASE:
§
Continued input of changes / corrections regarding
supervisors and departments.
§
Revised the data structure with a check box for
tracking bad email addresses.
§
Input corrected email addressed as received.
Issued revised bad email reports.
§
Input added authors and changes to authors as
requested by Peter Saulson.
§
Prepared the second draft data files for the S2
authorship list.
·
COST BOOK DATABASE:
§
Reconciling cost account listing from cost book and
schedule loading.
§
Continue to work with Carol and Florence starting
work setting up "crosswalk" between accounting and progress
reporting.
Development of the Advanced LIGO
Project Controls Guidebook continues.
Project Web Site for posting schedule and progress related data continues
to be updated with the latest and greatest.
·
See http://www.ligo.caltech.edu/~tfrey/index.html
Reports
(Lindquist)
LIGO Video--The chamber vent
planned in early June in Hanford has been delayed. Therefore the plans
for filming at Hanford have also been delayed.
Vistors Program Annual Report--A draft report has been prepared for
Stan's review.
Operations Annual Report--the Annual Report for Operations is due at the
end of June. Preparations will begin shortly. We will also start
the budgeting process for FY 2005 in June. P. Lindquist will issue a
"straw person" budget to start the process.
Change
Control/Contingency (Lindquist)
Ther are no open change
requests.
Human
Resources (Akutagawa)
From: Cindy Akutagawa
<cindy@ligo.caltech.edu>
>From: Bill Tyler
<tyler@ligo.caltech.edu>
Nothing significant to report this week.
.
Summary of Commissioning Activities at
LIGO Hanford Observatory (compiled by M. Landry)
Commissioning activities read like an extension of last week: continued work
on the
output mode cleaner (OMC) on the 4k, plus sundry work on the 2k, in part impacted
by difficulties in locking due to chasing alignments. However, new
commissioning projects
were started and some understanding of 2k mobility was gleaned (see below).
Recall that so-called dewar bonks are responsible for the majority of 4k
unlocking
events. Another attempt to aright
the LN2 dewar was made, however, at least one
new dewar-bonk-induced unlocking has been observed.
Calibration of the atomic clock to unfold a secular drift of 55ns/day, noted
during S3,
is underway.
4K IFO
OMC studies included the following:
Other 4k experiments included PSL cleanup,
in which an attempt to eliminate forward
scattering was largely unsuccessful, but the removal of the (recently
installed) laser power
control hardware resulted in fewer optical surfaces in the beam path (eight!).
Acoustic noise observed in ASPD3
(the ISCT4 path without the OMC) was
mitigated by cleaning
optics, cleaning again
for good measure, but mostly, by
swapping out a small (.5") mirror.
2K IFO
The 2k continued to exhibit alignment problems.
New LSC code was loaded in
mid stations, necessitated by last week's installation of lock acquisition
photodiodes.
Furthermore, new DACs
for the ETM locking QPDs were installed.
To minimize EM coupling to
instruments, power supplies are being moved out of the
external vault located in the desert near MY. Channels are being reconfigured
in the LVEA,
(more for experimenters there), and 110b's moved from MY to MX to support
seismometer
hookup.
A WFS2 DC centering
servo was commissioned, composed of a custom anolog
servo board driving a Newport tip-tilt mirror. Input beam motion
is likely responsible
for mobile MC-transmitted power and arm powers. Shifts in the input beam
appears to
originate with the installation of new MC WFS.
DAQ
New statevector
code was loaded. FB1
and FB0
work included the addition of a half
a terabyte of LDAS RAID disk space, and code patches to improve reliability and
efficiency of the framebulders.
Announcement:
Daniel Sellers joined the LLO team Monday as our newest Operations Specialist.
Many of you know Dan pretty well already; he's worked at LLO with our
electrical contractor Excel for some years, and knows as much about our
facility as many old-timers. At the moment he's giving the HEPI crew a boost in
the LVEA. In case you don't already know him, please introduce yourself and
welcome Dan aboard when you see him!
L1 Commissioning highlights (Zucker)
---------------------------------------------------------------------
Primary thrust remains on HEPI. The HAM2 actuator installation was finished
after resolving a problem with loose bolts in the original support structure.
Alignment was verified afterward by locking the mode cleaner Wednesday night.
We have temporarily lost use of the mode cleaner now as actuator installation
is up to HAM1, and the optical tables IOT1 and ISCT1 had to be pivoted out of
the way. In the process we have noticed an impending interference issue with
the new actuators when they are pivoted back; Oddvar has designed some adapters
to change the height of IOT1 so it will clear.
There was significant progress on commissioning the controls on the X end. An
apparently faulty actuator valve was swapped out to cure an anomalous amplitude
dependence on one horizontal actuator; all responses are now uniform. Brian
O'Reilly built an efficient software infrastructure for automated system
identification (measurement of the plant transfer functions) and tested it. The
measured responses are fairly similar to those shown at LASTI, and look nicely
diagonal.
Today Dennis Coyne loaded control laws (after fixing a sign error found last
night) and the 4 vertical-mode loops were locked to the position sensors.
On the vacuum equipment, Rus found a small leak on one of the gate valve
annulus connections in the corner station; after fixing it we took RGA scans
and finally declared victory on the vacuum punchlist. The corner volume is now
reconnected together under nominal pumping and can be reopened to the beamtubes
as soon as heavy lifting is over (planned third week of June).
Safety (Rich Riesen)
---------------------------------------------------------------------
Found no safety concerns during my weekly site tour.
Re qualified Oddvar Spjeld in the use of forklifts and the staging bldg. crane.
Completed the CPR/First aid/AED Instructor training course.
Distributed the revised LLO Laser procedure for approval.
In the process of revising LLO site safety procedures.
Updating all safety signage throughout the site.
Gearing up for the LLO site safety audit (June).
Working with Ed Chargois on property and GSA matters.
Obtained the necessary prescription in order to purchase an AED. The AED is on
its way.
LLO Seismic retrofit (Rich Abbott)
---------------------------------------------------------------------
1. Progress continues on HEPI. HEPI hydraulic actuators are
installed on both end stations, HAM 2,3 and 4 in the corner station. Work
has commenced on HAM 1.
2. The piping installation is complete in the end stations. All
BSCs, HAM 4&3 are complete in the corner station. Much of the piping
work is completed on HAM 1 and 2. The contractor estimates completion of
the task by the week of 7 June 2004
3. Received the repaired valves back from Parker. All valves have
been through the calibration process now. There are still some valves at
Parker awaiting repair.
4. HEPI electronics is awaiting installation in the Y-end station.
Installation will be complete in the beginning of next week.
LLO Seismic retrofit (Oddvar Spjeld)
---------------------------------------------------------------------
Completed
- received the last required HEPI boot for HAM 1 from MIT/LASTI overnight
- completed assembly of the last four HAM housings for HAM 1
- received four boots overnight from Southbridge on Wednesday 5/19
- designed table leg modification for IOT1, drawings sent to shop for quote
Ongoing
- assembly of hydraulic actuators for the HEPI housings
- started assembly of HEPI housings for the first LVEA BSC chamber
- installation of flex hoses for the LVEA HAM chambers
- re-design of HEPI housing circuit box mount
- updating HEPI drawings and models on the PDM Server
General computing (Roddy)
--------------------------------------------------------------------
* Current bandwidth usage can be seen at http://teche.ligo-la.caltech.edu/mrtg/LLO-Router/130.39.245.1_1.html
* Archived bandwidth usage can be seen at http://teche.ligo-la.caltech.edu/mrtg/archive/
under the dated folder for the week of interest.
* The internet connection has been extremely unstable for much of the last
week. There were several periods of downtime since last Tuesday:
May 18: 10 hours
May 17: 1 hour
May 16: 3 hours
May 12-13: 22+ hours
May 11: 18 minutes, and 1.5 hours
Things have been stable since around noon on May 18th. Bell South is
promising a full report of what happened and also why we have been having
intermittent service since January. After many hours working with them on
the phone, here is a short summary of what happened:
1) Bell has changed out several interface cards at the repeater
locations. This is to change all of the cards to the same rev level.
2) Bell mistakenly told LSU to change several settings on the LSU router which
was causing the circuit to remain down if there was a reset on their
interface. Once this was was corrected it seems that the circuit should
automatically recover after a period of downtime.
This is basically the same circuit behavior that we have had since January.
3) When the Bell service tech came out to the LLO site, he measured light
levels, etc. and everything looked OK as far as the fiber is concerned.
* I began setting up the new web server last night. I have reinstalled
Solaris and started setting up the raid disks. Both the system disks and
the web storage will be configured as RAID to provide redundancy.
I will start compiling Apache, etc. tonight. I will also have to take the
web server down for a short time tonight or tomorrow night to copy over the
files from the old server.
CDS software (Parameswariah)
--------------------------------------------------------------------
Upgrading the CDS gateway machines river and london Solaris 9. river almost
complete, london yet to start. Also starting a few issues with internal sun
machines.
Working on automating the HEPI status medm screen generation. Reading up on the
new code put in by Rolf and co. Will soon start to prepare a CDS failure
reviving document.
Rearranged the disks on both the frame builders after adding HEPI fast and slow
channels. Requested LDAS to mail me the new T3 disk array for moving DMT trends
to the new disk.
HPLF and L1 Commissioning (Amin)
---------------------------------------------------------------------
HPLF: Technical details with IPG Industries have been resolved. They will be
altering our laser to meet our criteria as requested. We will be sending the
laser back to IPG as soon as we obtain a return form.
Phase Noise: This week Tom Nash and I have been going through several
iterations attempting to measure the relative phase noise being generated by
the new Wenzel Industries oscillators. Unfortunately, we have been having
problems with the background RF noise floor. This prohibits us from
taking data with good SNR. Furthermore, occasionally our measurement is
overcome with 60 Hz harmnoics. Another difficulty is the sensitivity of the oscillator
ovens. Touching the devices can result in an observable frequency change when
both oscillators are beat against each other.
PSL: I measured the level of RFAM coming from the EOM chain. Comparing
the numbers for the 24.5 MHz EOM to those obtained 4 years ago, I will need to
make a few adjustments to the goniometers. I also inspected the EOMs for any
obvious deterioration via flashlight and mirror technique. I could find no
cataracts or crystalline errors that might degrade laser throughput.
Data analysis (Yakushin)
---------------------------------------------------------------------
LDAS admin:
1) u1d6@t3-7 failed
2) T3 for DMT frames has arrived and needs to be mounted and configured.
Data analysis:
1) Hosting waveburst code review face to face meeting at LLO.
2) Analyzing how reconstructed triggers depend on the start of waveburst job.
Burst analysis (Franzen)
---------------------------------------------------------------------
Prepared more results of my S2 hardware injection study using WaveMon and
WaveBurst triggers. Go to
http://www.ligo-la.caltech.edu/~franzen/restricted/inject1.html
http://www.ligo-la.caltech.edu/~franzen/restricted/inject2.html
in order to observe the results.
see also the CDS weekly meeting minutes in the commissioning archives:
no report
John Zweizig
This week I continued to investigate and tabulate periods
when the calibration lines were off during S2. These are causing mostly minor problems
in processing the S2 data and should be excluded from the final list of data to
be processed.
Jay Heefner reporting
Fiber Optic Timing Link for HEPI (Sander)
=========================
- The prototype link is operational. Jitter measurements are
being conducted.
Timing System Redesign (Flavio)
===========================
-
-
Now that Flavio has returned from MIT, Flavio will complete the
requirements document and have it ready for review by next week.
[Note by D. Coyne: Daniel Sigg has provided some thoughts
on timing distribution system requirements and implementation, 5/12]
Low Noise DAC AI Filter (Mohana)
============================
- The new single op amp package prototype boards are due
this week.
40 Meter (Jay, Ben)
===========================
- LSC cross connect additions and upgrades for signal
recycling are complete.
- The retuned DD PD, 2 WFS, QPD and 66MHz PD have been delivered
to the lab.
- PSL DAQ signals are now working.
HEPI (Ben)
===========================
- 40 Pier interface modules were received from Screaming
Circuits. They require connectors from the old boards. Don is in the process of
salvaging the connectors.
-
-
Todd will be at LLO next week to support installation.
-
-
The bad cables that we got from Positronics are being delivered on the
29th of May from Puerto Rico.
-
-
The Vertex system wiring diagram for HEPI, is now finished, and I
delivered them to Rich on Monday.
LSC PD Redesign (Ben)
=============================
- On hold for final comments.
ISS (Flavio)
==============================
- Flavio was at MIT last week working with Rana. A future
upgrade to the ISS should include AC coupling, the servo card on the PSL table
and integrated servo and PD boxes. It should also include provisions for
inside and outside th4e loop PDs before and after the mode cleaner (4 PDs
total).
- The current plan is to use a Rev C servo card that has
been modified.
EMI (Jay, Mohana)
=============================
- The LLO LVEA sus drawings should be complete by next week.
AdL SEI (Jay)
=============================
- Trying to get the capacitive position sensor procurement
started.
AdL SUS (Jay)
==============================
- Paul has completed the eurocard crate for LASTI minus the
power wiring. Todd will finish it.
- Jay will go to MIT on June 8 to install the MC triple
controls.
Elect Shop (Todd)
===============================
- The LEMO cables for Jon Allen at MIT are ready for
shipment.
PeterKing
In light of recent problems apparently
experienced at LLO with the frequency stabilisation servo's slow loop, I took
another look at the state code. The particular state in question is the
one that calculates the PID parameters and writes it to the slow
actuator. According to my understanding of the "when"
statement, the PID parameters are never actually calculated if the reference
cavity drops out of lock. A quick discussion with Ashfaq led to a
monitoring solution to see the particular when statement is actually executed
when the frequency servo is unlocked.
A similar piece of code is being worked on for DC control of
the intensity.
Lee Cardenas
The 10 watt laser is back again in progress for alignment
and mode match.
We (Peter and I) still have the power output not being stable as power degrades
with time
and temperature.
PeterKing
Quotations for the super-polished optics and coatings were
requested from Advanced Thin Film and MLD Technologies.
I drew up the dimensions for a new output modecleaner based
on a few desirable properties whim. Namely increased mass, larger bores
and single piece construction for the prism and spacer. A quick check
with a glass shop as to whether it was feasible did not reveal any problems.
Mike Smith
All items for 4 TC systems are on order and/or are being
made by machine shops. A new schedule for assembly, installation, and
commissioning of the LHO and LLO TC systems was created and is awaiting
approval. Assembly could begin on 6/7 at both sites, with commissioning
completed by 7/2 at LHO and by 7/16 at LLO.
Ken Mailand
The TCS machined parts for LHO and LLO will return from anodizing
and be shipped 5-27.
Erika D’Ambrosio
Mike Smith
A final revision was completed for the paper to be submitted
to Phys Rev Letters on "Direct Measurement of Scattered Light Effect on
the Sensitivity in TAMA300", by Takahashi, Arai, Kawamura, and Smith
Lee Cardenas, Liyuan Zhang
OTF Lab. (W. Bridge)
The test for contamination of
(21) pieces of the twisted, shielded, teflon cables are completed.
We are still taking ring down and beat frequency measurements as well as
the RGA of the chamber every other day. NO CHANGE
Absorption Test Measurement prototype in progress
The absorption measurement for the 8T sapphire slab from CSI has been
completed.
The absorption measurement for the (3) ANSACO sapphire substrates 3"
Dia x 1.0" have been completed.
Three absorption scans have been completed with sapphire substrates (No.1,
2) as a result,
substrate #1 has a high absorption band, scanned at 13 mm depth, only
photothermal signal has a significant feature. this substrate is good
candidate for the annealing test.
substrate #2 shows a lower and uniform absorption.
We still have one more sample the 15 cm dia. substrate, scanning is in
progress.
We have modified the plate holder for this substrate.
The fabrication of the rods for the laser enclosure have been completed and
there are all
installed in place. The cover plates being cut to size is in PROGRESS!
Scatterometer system in standby
OTF Lab at Lauritsen ROOM 38 NO
CHANGE.
Cavity #3
The cavity is locked and we are taking ring down and beat frequency
measurements every
day as well as the RGA for the chamber.
Cavity #2 Test cavity optical set up in standby for further samples.
<li>
Osamu and Bryan have uncovered what we believe to be a fundamental design
problem in the Advanced LIGO length sensing scheme which the 40meter has been
working towards testing. The design calls for two pairs of RF sidebands, f1 and
f2 (for AdvLIGO this might be 9 & 180 MHz; for the 40m, it's 33 &
166).<br>
The CARM and DARM degrees of freedom are sensed at f1 and f2, respectively,
while the short dofs (PRC, MICH, SEC) are sensed at f2-f1, f2+f1, or both
("double demod"). The idea is that the short dof sensing is derived
only from the sidebands and is undisturbed by the arm-amplified carrier phase
shifts.<br>
We have modeled this scheme using Twiddle and Finesse, and it agrees with the
matrix presented by Peter Fritchel in an LSC meeting back in 2000 or
so.<br>
We have implemented these two pairs of sidebands at the 40m using two EOMs in
series. This produces "sidebands on sidebands", ie, local oscillators
at f2-f1 and f2+f1. These were apparently neglected in all the modeling. They
exist, and they can beat with the carrier at f2-f1 and f2+f1. This is not a
negligible effect; to the contrary, it completely swamps the signals for the
short dofs. Osamu has confirmed this using a modified FINESSE model. Osamu's
results are <a href="http://www.ligo.caltech.edu/~omiyaka/20040517_sbsb.pdf">
here.</a> <li> It turns out that Bryan was unable to lock the
Glasgow 10m RSE interferometer for exactly this reason. Bryan's summary of the
Glasgow work is <a href="http://www.physics.gla.ac.uk/~bryanb/stuff/Caltech_Intro_01.pdf">
here.</a>
<li> We are considering several possible solutions to this problem:
<ul>
<li> eliminate the sidebands on sidebands by placing the two EOMs
in parallel, using a Mach-Zender
<li> eliminate the sidebands on sidebands by employing 2 more EOMs
to kill f2-f1 and f2+f1
<li> Generate f1 and f2 but not f2-f1 or f2+f1 by sending an
appropriately tailored RF signal into one broad-band EOM
<li> find a different combination of demod phases and other signal processing
to allow us to extract clean
signals for PRC, MICH, SEC with the existing EOM configuration (it
is not clear that this will be
successful, but we will try).
<li> some more radical solution which might require changes to the interferometer or the length sensing
optics and electronics.
</ul>
<li> Dave Tanner & Dave Reitze have experience with complex
modulation of broadband EOMs, and they say that we can indeed reduce the
sidebands on sidebands by, maybe 10 dB. We need more like 20 dB suppression, as
well as a system to monitor and actively kill the sidebands. <li> Bryan
and Osamu have started looking into the finesse model in a bit more depth to
see if we can reduce the effect of the arm cavities by tweaking the demod
phasing and other such tricks. It looks as if it might be possible if we're not
too fussy about offsets (at least initially) but needs some more in depth
examination. If it is possible then the diagonalisation of the central part
will not be as good and the problem of lock acquisition will still be just as bad
due to large signals in the central part signals around the arm cav carrier
resonances - only cancels at the operating point as far as I can see. We need
to look at this a bit more but it is unlikely to change the conclusion that we
need to use a Mach Zender. <li> The best course for now seems to be to
use a Mach-Zender interferometer because it has no sidebands of sidebands from
beginning. Frequency noise by a doppler shift will be considerable, but it
should be of the same order as one produced by the other mirrors.
<li> To control the MZ, Osamu asked Jay to get a PZT driver like PMC
which has a fast response up to ~100kHz. Internal modulation using 33MHz should
work well to get signal to control the MZ. We will probably put a pick off BS
for parallels EOMs just after PMC, so MZ won't change the path length.
<li> Osamu is writing a proceeding paper on the 40m program for SPIE. The
effect of the sidebands of sidebands is already included. A draft can be found
<a href="http://www.ligo.caltech.edu/~omiyaka/spie2.pdf">here.</a>
<li> Rolf has prepared new LSC software for the 40m dual-recycling
configuration. Some more work is required before it can be installed; Rolf will
return to this after his 2 week sojourn to LLO. New MEDM screens and the EPICS
sequencer are in progress.
<li> For lock acq, this code expects to include InputMatrix40m.c; the
development of this code is the subject of much active thinking by Rob and
everyone else in our group.
<li> Ben has delivered two 33MHz Wavefront Sensors to the lab, and is
getting two boxes for them from the machine shop. These complete the PD
requirements, and join the other recently delivered QPD, double demod PDs, and
66MHz LSC PDs at the lab.
<li> Don has been installing the cross connects for the rewiring of
our LSC rack to accommodate the double-demod signals.
<li> Ben has traced and characterized the PSL fast channel DAQ readback
paths. To the design, they are being treated properly by the interface
card. The next step is to see if the gain that was dictated by the design
is appropriate for the signal levels that we have here.
no report
no report
Simulation and Modeling
(Bhawal)
--------------------------------
Weekly Physics Meeting
---------------------------
Biplab presented H1 field intensity profiles generated using actual mirror
phasemaps. Sany Yoshida from Southern Louisianna University presented his
measurements at LLO of the coupling between translational and angular degrees
of freedom originating from seismic noise through stacks. Patrice Hello, Matteo
Barsuglia and Monica from Groupe Virgo, LAL, Orsay were present in our meeting
today.
Adaptive FFT
-------------------
(Hiro, Biplab) We solved the problem for very small size final beam-width
(for a converging beam) by increasing the Window size of FFT computation.
H1 mirror phasemaps
-------------------------
(Biplab) With help from Xiao Xu sorted out all H1 mirror phase maps.
After that ran FFT with these phasemaps. These are available at
http://www.ligo.caltech.edu/~bbhawal/maps/
The mirror maps generate asymmetries in Sideband outputs and cause
differences between two humps of the sideband profile usually observed in a
cold state of H1. With heating this becomes more uniform but some asymmetry
still remains. Carrier remains to be symmetrical in either cold or hot cases.
It is found that the Beam-splitter is mainly responsible for this. Other
mirrors have minor effects as compared to beam-splitter. We are now studying
how this affects the WFS signals.
Code development and maintenance
----------------------------------------
(Hiro,Melody)
Released E2E version 2.0.1.
A macro usage information is included in the set output file. This makes
it much easier to find the problem related to macros. Macro implementation
itself is much better than before, and very close to what is documented in the
Primitive manual.
Alfi
----------
(Bruce)
- Ports are now created in a faster
and more intuitive
manner (PR 334.)
- Added "Changes and New
Features" help dialog (PR 456.)
- Fixing macro parsing (to not parse
them.) (PR 457)
(Melody)
Reverted the release to a previous version, due to a software bug.
That bug
has been fixed and made a new release has been made available to the
users.
Working on several problem reports.
--------------------------------------------------
LDAS Software Systems (Edward Maros for Blackburn)
--------------------------------------------------
This week has seen the 1.1.0 release of LDAS. The installation was completed in
a twelve hour period (partly due to network issues with Livingston). All of the
sites were upgraded to DB2 8.1 fixpack 5. This included the the migration of
the existing data from DB2 7.2 and the creation of new databases due to table
changes for sngl_inspiral and gds_triggers. After the data was migrated, the
DB2 7.2 software package was removed from all the sites. This release also
includes the first beta version of the datacondCaller library which allows the
usage of the algorithms of the datacondAPI outside of the LDAS system.
With the publication of GEO data into the data repository, tests are being
developed to validate LDAS's handling of the GEO files.
The main focus is to close out problem reports. Tor wards this goal the
following work has been done.
ManagerAPI:
* Work on being able to throttle the number of jobs send to
an API
(PR#2398) and to throttle jobs to an API based
on the amount of
memory currently in use by an api (PR#2399).
Most of the work for
throttling based on the number of jobs is
complete. Throttling
based on memory usage is hindered by OS
efficiency issues.
* Also being worked on in the manageAPI is the issue of jobs
with
extra braces getting stuck (PR#1852)
cmonClient:
* An explicate error is now generated and cmonClient will exit
if
the BWidget package cannot be located or loaded
(PR2442).
* Code that was only being used by cmonClient has been moved
from
the genericAPI to the cntmonAPI/tcl/client
directory (PR#2433).
This minimizes the risk of changes these files
affecting the
building of LDAS as a whole.
* The resource files LDAScntlmon.rsc and LDASdb2utils.rsc
have been
committed to CVS to reflect the values of the
1.1.0 release.
metadataAPI:
* The bgLoop time for waking up dataRecv threads has been
adjusted
from 10 seconds to 60 seconds; The resource
variable for thread
timeout has been adjusted from 20 seconds to 50
seconds. Both of
these changes stem from PR2435.
* The long DB2 error messages which may be returned by the
metadataAPI are no longer truncated (PR#2484 and
PR#2495).
eventmonAPI:
* The insertion rate variable has been clarified in its
meaning and
cmonClient has been enhanced to allow for its
modification in real
time (PR#2474).
* Additional cleanup was done when a job is killed to
prevent the
API from getting assertion errors (PR#2454).
This was mostly seen
when running the putStandAlone exception tests.
frameAPI:
* If the -usertype option to the createRDS command ends in a
number,
then it is taken as the level of RDS to produce
(PR#2406). If the
-usertype and -type options have the same base,
then the level
number must not be specified or it must be
greater than the level
specified by the -type option.
diskcacheAPI:
* PR2455 is being actively pursued. Currently when a mount
point is
removed, its frame files and sub directories are
correctly removed
from the diskcache and queries do not falsely
report the existence
of frame files. When the mount point is put
back, frame files in
subdirectories are correctly restored, but frame
files in the
mount point directory itself are not. This code
will not be placed
into CVS until this issue is resolved.
dbaccess library:
* The strange strings seen at the completion of some wrapper
jobs
have been removed (PR#2486). This was due to an
error in the
lexical analyzer used by the dbaccess library
used to parse the
SQL files for table definitions.
Automated Test Scripts:
* The putStandAlone test has been modified to accept the
user
specified database for all of its commands.
* The metadata exception test has been extended to test more
DB2
errors and ilwd errors.
Porting To Commercial Compilers:
* Efforts continued to get all of LDAS compiled with Sun's
commercial compiler. Most of the lib directory
now compiles and
many of the test programs in these directories
PASS.
-------------------------------------
LDAS System Administration (Anderson)
-------------------------------------
Caltech
-------
(Dan Kozak)
* Finished up with Sun vis a vis the 2Gb SAM log file problem. We'll keep
the problem open and test it when we get SAM 4.1 installed.
* Got a T3 and a 3510 disk from Sun and installed them in the spare parts
boxes.
* Helped Ben with new T3 configuration.
* Got hsi flowing again, both transferring data and deleting files.
* Worked to get my entry in Sun's support database cleaned up to prevent
the problems I've seen of late (in which they can't get email, phone
calls or packages to go to the right place).
* Unwedged ldas-archive staging a couple of times.
(Al Wilson)
* Contacted Sun for memory replacement in DEV - dataserver.
* Changed grub setting for the ldas-test-gridmon machine. This change will
allow the machine to be rebooted w/o keyboard being attached.
* Looking into the monitoring tools that Ben has on his nodes. Will see if
they can be incorporated into BB with a minimum cpu load.
* Finished testing disk drives in the test datacache unit. This unit is ready
for NFS testing.
(Stuart Anderson)
* Started testing Fedora Core 2 release.
* Finished publishing old S1 data to LDR.
* Mirrored GEO S3 data to Caltech.
MIT
---
(Keith Bayer)
* Installed RH9 on Dell quad/dual processor boxes (ldas-jobs, ldas-pcdev1).
* Still collecting S2 L1 RDS frames and going after the S2 MDC frames as well.
* Received fiber cable from Stuart.
* Discovered failed hdd in pcraid1 (copying data to pcraid2
as a precaution before swapping out drive).
* Mounted pcraid2b on all cluster nodes to test condor install.
Livingston
----------
(Igor Yakushin)
* u1d6@t3-7 failed.
* T3 for DMT frames has arrived and needs to be mounted and configured.
Hanford
-------
(Greg Mendell)
* Work continues with Ben Johnson to get condor and access to LHO and LLO
S2 and S3 level 3 RDS data via LRD and LSCdataFind set up at LHO.
This
should be finished by the end of this week, and we are opening up the
cluster to a few test users.
(Ben Johnson)
* /dmt created and mounted on fb1, dataserver, and gateway. It is
presently in use by the framebuilder + DMT machines.
* Replaced Foundry switch module with one bad port. New module is
working so far.
* Replaced HDD on node2 with spare. Sent bad disk to Maxtor for
warranty replacement.
* Published L3 data into LDR for S2 LHO and LLO; and S3 for LHO.
Presently generating L3 RDS data for S3 LLO. Had mysqld freeze/stall
while running three simultaneous scripts. Problem 'fixed' successfully
by SIGKILL, and publishing continued. Error was not reproducible.
-----------------------------------
Data Analysis Activities (Anderson)
-----------------------------------
(Albert Lazzarini)
* Completed a analysis and derivation of statistics and use of
overlapping Hann windows for combining the stochastic background
search results for multiple analysis segments. See
T040089-00-Z
* Continued to work on derivation of a time-dependent optimal filter to
track specific patches of the sky in a targeted stochastic search.
(Greg Mendell)
* Work continues on the code needed to do Monte Carlo simulations with the
StackSlide search. I am currently working with the PULG group to
sort
out issues with the normalization and phase of the injected signals
produced by software in LAL.
(Peter Shawhan)
* Finished writing an article about gravitational waves for
American Scientist magazine. Look for it in the July/Aug issue!
* Moved the LIGOtools 'segments' package into the lscsoft CVS
archive, and released a new version of it.
* Currently working on the S2 binary neutron star inspiral paper.
(Julien Sylvestre)
* Worked on optimizing the burstwrapper/TFClusters code on condor. Quite
fast now, at least 10x improvement in speed over running in LDAS.
* Running TFClusters simulations to finish the S2 analysis.
---------------------------
General Computing (Wallace)
---------------------------
MIT:
(Keith)
-Working on getting flexlm license and installing ideas package on gc
-Helping with LSC preparations
-Beginning to build new mailserver on Solaris 9 SB1500
-Looking into video camera capabilities
-Purchased various computer items
Livingston:
(Shannon)
* Current bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/LLO-Router/130.39.245.1_1.html
* Archived bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/archive/
under the dated folder
for the week of interest.
* The internet connection has been extremely unstable for much of the
last week. There were several periods of downtime since last Tuesday:
May 18: 10 hours
May 17: 1 hour
May 16: 3 hours
May 12-13: 22+ hours
May 11: 18 minutes, and 1.5 hours
Things have been stable since around noon on May 18th. Bell South is
promising a full report of what happened and also why we have been
having intermittent service since January. After many hours working
with them on the phone, here is a short summary of what happened:
1) Bell has changed out several interface cards at the repeater
locations. This is to change all of the cards to the same rev level.
2) Bell mistakenly told LSU to change several settings on the LSU
router which was causing the circuit to remain down if there was a
reset on their interface. Once this was was corrected it seems that
the circuit should automatically recover after a period of downtime.
This is basically the same circuit behavior that we have had since
January.
3) When the Bell service tech came out to the LLO site, he measured
light levels, etc. and everything looked OK as far as the fiber is
concerned.
- Began setting up the new web server last night. I have reinstalled
Solaris and started setting up the raid disks. Both the system disks
and the web storage will be configured as RAID to provide redundancy.
I will start compiling Apache, etc. tonight. I will also have to take
the web server down for a short time tonight or tomorrow night to copy
over the files from the old server.
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
- Helped organize and set up computers for pcard training held here on
5/19. Helped test the software prior to testing. Sat in on the training
and made myself available to help with any problems. Removed the
computers and put them all away after the training.
- Replaced the hard drive and reinstalled all software on a user's
desktop PC. This is a hard drive that had been shown to have bad
sectors during Mike Pedraza's audit. Installed Win2k, all the drivers,
and all the standard GC application software. While doing the installs
I also discovered that the network hub was defective. I replaced the
hub and cat5 cable.
- This weekend I will be doing a disk image of another user's hard drive
so that I can replace that drive. This is a SCSI drive on a workstation
PC. The user requested the disk image instead of a complete re-install.
- Misc. user support and purchasing.
CIT:
(Lisa)
- More work on the spam filters.
- Did backups of root filesystems
- Working on the compiles for the new application server
Mail Stats 5/13 - 5/19/04
Messages Accepted:
Spam Rejected:
Viruses Rejected:
False Positives:
Total Mail Thru:
(Mike)
-Ran security updates on the following user workstations this week: Barry
Barish, Bill Taylor, Lee Cardenas, Mark Barton, Synchrotron lab computer
(deimos) and Mike Smith.
-Reloaded my office workstation. This was due to many XP blue screen
crashes. This occurred after testing various software applications and
running OS/software patches and adding additional security, which I do
before applying to user workstations.
I have loaded VMWARE to prevent this from happening again. On the VMWARE
side I have loaded server 2000, win 2000 PRO, and XP pro for running these
types of tests.
-Worked on a network connection for Riccardo De'Salvo down in the OTF lab.
I also setup a workstation for Barbara Simoni down there, which included me
updating OS patches & Norton anti virus software and running a virus scan
to make sure this pc is not infected with a virus.
-I worked with George a good part of this week installing the updated
application DCC database. Everything seems to be working for now.
-Worked on 2 RMA Hard Drives for Al Wilson. I have shipped these out for
replacements.
-I am loading a new laptop for GariLynn. I still have a few more
engineering packages to load. Then get a ghost image before I give this to her.
-Other misc. onsite/phone user support.
(Bruce Sears)
- Ilog (Electronic Log) Development:
- More work on search and sort
features (by Topic, specifically).
(Veronica)
- LSC website: Most time was spent setting up an online registration
processing application. Finished setup of the frontend and made
adjustments according to requests from the meeting's organizers. Conducted
extensive negotiations with the MIT ecommerce department on configuring
and fine-tuning our 'store.' The form is installed and the store is now in
production. The configuring/fine-tuning are ongoing as new options are
being identified during actual use. Ongoing user support on security
issues of the online application. Educating the users how the online
transaction works and that it is indeed secure, but discussed alternatives
with Larry in case the users are not convinced. Working with MIT LIGO on
posting updates to other parts of the website (it's about more than registering
:)
Posted updates to the LIGO Results page. Working on updating the
employment page.
- LIGO website: Worked with George Stokes and DCC on issues related to
upgrading the DCC applications. We had to halt the server over the weekend
to run a test installation of the new system. During the downtime George
has identified a few items that needed further attention. Working my way
through documentation on the new system. Assisted George in testing the
setup.
Posted updates to Internal b/board and other pages. Posted
late-arrival presentations for Aspen. Updated the roster database.
- CaJAGWR website: Videotaped a talk by Benjamin Owen. Captured/compressed
the footage for streaming, it's ready to be posted. Updated the
website. Provided user support.
- Projest Science: Started working on the website for the upcoming workshop.
(Larry)
-Spent time going over a number of contracts. Resolved contract issues with
SUN.
Still have a number of items to check on; CISCO has not sent anything on the
contract renewal from over a month ago, Caltech needs a new SUN listing, date
confirmations needed from Foundry.
-Continue working on various documentation assignments. The one taking top
priority is the revamp of the security plan.
-Still setting up a new print server. After updating the drivers to the latest
versions the changes needed to have minimal inpact on the users so they can use
the new printers is now possible. About 10 configuration files need to be
modified and a few more added before everything is wrapped up.
-Assisted a number of users with their Acrobat reader program. Mike will be
upgrading the PC's to version 6 and we are looking at doing the same for the
UNIX side of the house.
-Assisted Lisa with a number of e-mail items. Mostly, cleaning a few things up
and contributing to the spam filter list.
-Assisting a number of people on the logistics of the different conferences
coming up. Covering web pages, networking, projectors and table layouts.
-Assisted the DCC on a few items.
-The general user assistance. Setting up new accounts and modifying existing ones.
From: Larry Jones <ljones@ligo.caltech.edu>
Advanced LIGO Seismic Structure
SEI Structure:
Some responses and questions are being generated on the issues for
modifying the Design Requirements for the BSC structure. However, other
priorities within LIGO are seriously limiting our responsiveness as a team, and
additional contract costs are likely being incurred. Our goal is to release
Revision A of the E030179 Design Requirements document for the BSC structure on
5/21.
The Design Review meeting for the BSC structure is now scheduled for
Actuators:
We're working with a wire manufacturer in NC to have the actuator mag wires
processed in their ultrasonic wire cleaner prior to bobbing winding; a quote is
expected soon. PSI has identified a high temperature epoxy as a candidate
potting material for the bobbin termination area, and a sample has been
received. R Taylor will make specimen coupons for RGA qualification testing at
LHO. Significant improvements in RGA sensitivity and chamber background
cleanliness in the 40 m lab have been demonstrated in recent scans.
Displacement Sensors:
Jay is getting an updated quote from ADE.
Seismometers:
Nothing new.
Galling/Dusting Test:
Further progress was made on preparing Figures for the report.
From: Janeen Romie <romie_j@ligo.caltech.edu>
AdLIGO Suspensions
MC to LASTI in June
Continuing to coordinate with many key folks on preparing for the mode
cleaner triple suspension to go to LASTI in June. Laurent Ruet from MIT is here
for this week and next supporting the assembly and damping work of the mode
cleaner. We welcome him here at Caltech and thank him for his participation.
He's been updating the assembly specification. He's working with Calum and
Helena this week and will work with Mark Barton next week. Work is on schedule.
Jay Heefner is planning on installing the mode cleaner's electronics at LASTI
June 9 & 10. Jay will work with Laurent and Dave O. Our plan is to send the
suspenson and associated parts to LASTI on June 1st, for arrival June 4th. Mark
and others will go to MIT to support the re-assembly and installation work
sometime soon after June 10th.
The LIGO 1 global control osems are finished with their vacuum bake and ready
for assembly into the suspension. Bob Taylor reports that the hybrid osems will
go into a vacuum bake oven today or tomorrow for use on Monday. We can use the
thoroughly cleaned anodized aluminum hybrid osems for damping experiments in
the meantime, if required.
Quad Work
We thank Russell Jones from the
Output Mode Cleaner
Dennis Coyne asked the Caltech suspension team to work up a concept to damp
the output mode cleaner. Calum and I met with Peter Fritschel and Peter King to
work out the particulars. Calum has worked up a concept for a double pendulum
suspension for the output mode cleaner, based on a GEO design, and transfered
the assumed parameters to Mark. Calum is working on a maraging steel blade
design that will meet the requirements. Mark is working on modeling the double
pendulum in Mathematica. We hope to have results to pass by the Peters and
others by Monday. Our goal is to have a design and drawings completed by the
end of June, fabrication of parts along with assembly and testing of the
suspension by the end of July and ready for installation by the end of August.
From: Bill Kells <kells@ligo.caltech.edu>
This week we have obtained some new results on sapphire sample bulk absorption
(as posted by Liyuan Z). I've started to also measure the OPD through these
same samples to derteermine whether there is any correlation between the sharp
absoption anomalies and OPD inhomogeneity.
For additional information about this report, contact whitcomb_s@ligo.caltech.edu