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The LIGO Executive Committee Agenda for Monday April 30, 2001 will be:
CANCELLED DUE TO NSF REVIEW
no report
WBS 1.2 LIGO Operations--Administration
A site teleconference was held on Thursday, April 26, 2001. Discussion included:
From: Ed Chargois <chargois_e@ligo.caltech.edu>
>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
| Packages | Faxes | |
| In | 29 | 28 |
| Out | 8 | 46 |
Press here to access the DOCUMENT CONTROL CENTER WEB PAGE.
From: Esther Cunningham <esther@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA.
From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
From: irena@ligo.caltech.edu (Irena Petrac)
Support (Wood)
Progress Period from 04.20 to 04.26
Accomplishments:
WBS 1.4.1.2 Project Controls (LIGO Construction)
The end-of-February Quarterly Progess Report has been sent to the NSF.
Also working with David Shoemaker to set up assignments for Advanced R&D Annual Report. We should be submitting this report (necessary to get FY 2001 funding) over the next month or so.
The following Change Requests have
been submitted:
| CR-000018 | WBS 1.1.4 | Curbing for Service Roads at Livingston | G. Stapfer |
| CR-000019 | WBS 1.2 | Additional Lab Equipment | D. Coyne |
| CR-000020 | WBS 1.1.4 | Staging Building and Renovations to Existing Building--Livigston | F. Asiri |
| CR-010001 | WBS 1.1.4 | Return of Unused Construction Budget to Contingency for Civil Construction | F. Asiri |
| CR-010002 | WBS 1.2.1.1.6-7 | Return of Unused Construction Budget to Contingency for ISC Design | S. Whitcomb |
| CR-010003 | WBS 1.2.1.1.9 | Return of Unused Construction Budget to Contingency for Detector Systems Engineering | S. Whitcomb |
| CR-010004 | WBS 1.2.3.1 | Return of Unused Construction Budget to Contingency for Physics Environment Monitoring | S. Whitcpomb |
I have distributed copies of these Change Requests and tentatively scheduled a Change Control Board Tuesday, May 8, 2001 at 9am PDT.
Press for the latest Contingency Needs Projection.
From: Kris Duncan <kris@ligo.caltech.edu>
From: Ed Jasnow <jasnow@ligo.caltech.edu>
(D Cook)
The ETMx-4k was aligned
this week to <8urad pitch and yaw angles while
maintaining the 50% open light voltage settings with their new OSEMs.
This
is the first optic to use a new a digital SUS controller. We integrated
a
controller offsets adjustment into the alignment procedure. If the
controller pitch and yaw offsets have a value set, it is amplified
through
the gains which in turn steers the optic. After making adjustments
to the
OSEM positions we then had to re zero the controller pitch and
yaw offsets
which get influenced by the OSEM changes, followed by a PAM screw
adjustment. At the point where the OSEM 50% open light values were
no
longer affected by the smaller PAM screw changes we re zeroed the
controller pitch and yaw offsets(a very small offset change at this
point
as the optic was ~ 20urads from its final pitch and yaw angles). At
this
point we finished the alignment with the PAM screws to <8urads.
The new
safety stops were installed. The door was replace, but pumping
was delayed
as we were wanting to monitor the optic and the controller during pumping.
Unfortunately the DAQ system is down for upgrades and is taking longer
than
originally anticipated so it was decided to begin the pump down.
We have set new monuments
for a modified re-alignment procedure for the
ETMx-2k. This is similar to process used on the Y-arm. We will
replace the
OSEMs, safety stops and realign the optic. We hoped to close up by
weeks
end and monitor the pumped down controller effects here.
The ITMy-2k was balanced
Wed. Due to the suspension wire being too close
to the side magnet it was necessary to adjust the wire standoff
position. This was completed and is now ready for re balancing. It
will go
into the vacuum bake oven on Friday. We will re suspend on Monday.
Install
on Tuesday(BSC8). We will then pull the ITM x&y arm optical lever
tables
out, install cleanroom etc.,vent and pull the spool pieces (WA-1A &
WA-1B).
This follows the original IAS and COS alignment procedures.
The 4k remains pumped down
allowing the commissioning activities to begin
in parallel. The new 4k digital controllers and DAQ should be on-line
for this.
The 2k mode cleaner alignment
is finishing up and seeing 'flashes'. The
mode matching telescope is aligned up to MMT3 and awaiting the COS
alignment to complete to process. The optical lever and 'transmitted
and
'reflected' beams need to be steered out the view ports.
The 2k alignment of the
core optics, PO mirrors and telescopes and
components should be completed by 5/11/01 if all goes well. Replacing
vacuum components and pump down to follow. D. Coyne is currently updating
schedules.
The ETMy-4k optic remains
to be installed and these activities will
parallel the 2k final alignment tasks at a time when personnel and
equipment can be shared.
CDS: The CDS server had a disk crash on Tuesday,
and we have replaced the disk and recovered files from backup tapes.
GC: Although we've been occupied with the CDS problem,
the changeover from our old web server to our new server has also been
going on in the background, and is now essentially complete. During the
changeover both the old and the new servers were running, but now the server
software on abundance has been turned off, and the only GC server running
is www.ligo-la.caltech.edu.
There are two possible problems we may see at this point. If anyone has
in the past saved a bookmark to one of our web pages, and that bookmark
specified abundance.ligo-la.caltech.edu, it will now be necessary to edit
the bookmark (or make another one) to www.ligo-la.caltech.edu.
The directory structures should not have changed, so the only thing necessary
should be to change "abundance" to "www".Also, if there are any links on
the server which point to abundance, they will need to be changed to www.
We will be running some software to look for these broken links, but if
anyone finds one, please let me know. (Tom Evans)
Operations: We have prepared a detailed schedule of activities
that are being undertaken prior to E4, so that we will be ready to vent
immediately following the conclusion of the run. We are now carrying out
this list of activities. Operators are continuing control room operations
plus getting ready for the up-coming vent. The first of four clean rooms
to be used is now over HAM1, the labs have been cleaned and the end stations
are being cleaned. Vac-bake support for the 40 meter has been completed
for now, we are currently baking equipment and tooling for LLO use during
the vent period. The E-4 operator schedule has been
posted. (Rich Riesen)
Optics: Used the X-Pickoff beam to monitor the internal power level of the PRM. Although we are using a large element PD, it turns out the beam was still too large for it. We reduced the beam by placing a lens before the PD and measuring the power levels both with the PD and with a brand new OPHIR power meter. We measured the output beam jitter of the mode cleaner using a quadcell on IOT1. We also measured the transmitted power spectrum. We then repeated the measurement using older damping settings. There is not much difference except in yaw of the beam which is better in the old settings. Analyzed the radius of curvature measured for a 1.06 micron beam with a Shack-Hartmann wavefront sensor at the symmetric port. Had a housekeeping party in the vacuum prep and optics labs, in preparation for optics rework when we open. (Jonathan Kern)
PEM: PEM microphones are now installed at both end stations. I am still waiting on the extension cable for the fluxgate magnetometer in the LVEA, however I did get the mounting brackets. I plan to make another audit of the accelerometers by the end of the week to determine which are working and which need to be replaced. I have also reclaimed the accelerometer channels at each end station. The seismometers, tiltmeters, and voltage monitors are performing nominally. (Doug Lormand)
Outreach: Project Plato spent the day @ LIGO Livingston. Project
Plato is an LSU sponsored in-service program for high school science teachers
from all across southern Louisiana. It focuses on improving science education
for high school students. The workshop not only allowed teacher to share
science projects and lessons that have been successful with their classes
but they were also able to learn new ideas and information to take back
with them. We gave them a tour of our facility, held a demonstration of
a hands on science project (polarization of light), and treated them to
some good food. (Bonnie Wascom)
|
Installation&
Commissioning:
|
Other
Science/EngineeringActivities:
|
See also the Installation web page
Rolf, Jay and Richard have installed the digital suspension controllers for the 4 km interferometer at the vertex. Although the configuration is not complete (both hardware and software elements are missing) and much testing and remains to be done, both small and large optics have been damped by the DSC and the MC has been locked using the DSC.
Associated with the transition to the digital suspension controls, Rolf and Dave Barker modified the DAQ configuration extensively: replaced RFM units in the DAQ controller and frame builders (fb0, fb2); reconfigured the reflective memory for the 2 km and 4 km systems; replaced the 4 km PEM ADCU with a Pentium; and attempted to upgrade the frame builders (fb0, fb2) to Solaris 8. The operating system upgrade didn’t work, so the system is being restored to the original environment.
microseismic peak measured on the GURALP seismometers
has been
successfully completed.
Electronics was completed to provide measurements
of the sideband
amplitudes at twice the RF modulation frequency. The
signals are required
during the acquisition of the recycled Fabry-Perot/Michelson
interferometer.
The transitional state of the interferometer with
the recycled Michelson
and a single arm locked together was acquired.
The disk on
the main CDS computer (LLO1) crashed this week. This is the
same disk that
had crashed about 4 months ago. Some but not all of the
information
on this disk had been backed up on other disks and all files
had been backed
up on tape in March. The restoration is still in process.
This disk,
since it is critical to all operations of the interferometer,
needs a
better back up system. We are asking for a large
reliable
and redundant backup disk that can take all the files. We
will also institute a regular backup on tape weekly.
The E4 HomePage is available at http://blue.ligo-wa.caltech.edu/engrun/E4/. Timely information will become available as we approach run.
We have been putting the latest 10-W laser through
its
paces. The beam propagation before, and after,
the installation of the
phase-correcting Pockels cell was measured.
The relative intensity noise
of the laser and the master oscillator was measured.
The intensity noise of the 10-W laser was pretty much
the same as previous
lasers, although now there's a small broad peak around
25 kHz, that has never
been observed in previous lasers. The intensity
of the master oscillator
was quieter than before. Above 1 kHz, it is
around -140 dB/Sqrt[Hz].
The phase-correcting Pockels cell was installed and
the laser was
re-aligned. At the moment, the free-space beam
propagation and M-squared
are being measured. The output of the laser
is 11.3 W, as measured by a
Scientech calorimeter.
Rick Karwoski, Paul Russell
· Intensity stabilization. We have had a very constructive week.
1. The main ISS board was
stuffed, bench tested and calibrated at Bridge Lab
2. We now have all ISS prototype
electronics set up in the Lauritsen lab.
3. We have injected single-frequency
signals through the CurrentShunt/Laser /PD/pre- amp (Inner Plant) electronics:
Verifying signal fidelity and dynamic range. We are running about 3mw of
light on the detector.
4. We have run frequency response
tests on the Inner Plant to verify consistency with our previous experiments
and the simulation model.
5. We have calibrated the
Inner Plant gains in preparation for initial loop closure.
At this point everything is in good agreement with the earlier tests and consistent with the simulations. We note that with the new laser and new electronics there is a slightly extended frequency response. The implication is tighter loop closure and better suppression than predicted at higher frequencies.
Tomorrow, barring any unforeseens, we will set up the main servo and close the servo around the PMC light:
1. The shelving network turnover
frequency will be set to line up with the Laser pole
2.The allowable position gain
for an acceptable phase margin will be determined from the new Inner Plant
response measurements. The gain will be noted, and with the loop
closed, dialed into the servo electronics.
3. Once the position loop
stability/performance has been validated, shelving gain will be added to
further suppress the noise in the 40-150 Hzish area.
If all goes as planned we will be evaluating noise suppression performance at the PMC light sensor point this week.
Photo-Detector issues There has been a growing concern about the uncertain availability of C30642 photo diodes. I have located a source for the part. In anticipation of the upcoming PD builds we will be placing an order for at least 50 pieces.
Ben Abbott
The intensity servo DC photodiode board is stuffed, in an enclosure, and undergoing tests currently. Initial measurements look encouraging.
I set up an automatic system to provide timely warning
about potentially
disturbing earthquakes from around the word. The present
system reports
Magnitude 5+ quakes occurring anywhere around the
word and it reports
M3+ quakes from North-America. The EQ warning conveniently
pops up on
the top of the Coincident
Seismic Activity Indicator (CSAI) page
(http://blue.ligo-wa.caltech.edu/gds/TriNet/)
whenever a report is
issued. Detailed info about the EQ is provided and
ultimately precise
arrival time to LIGO sites will be reported (presently
it takes couple
of clicks to get these through
http://geohazards.cr.usgs.gov/tt/compute_tt.html).
The ultimate goal is
to provide timely (preferable pre-arrival) warning
to control room
operators/scientists, which allows preemptive actions
(e.g. change mode
to preserve lock etc.). The local phase-arrival times
will also be
logged in the LDAS database and utilizing the control
room alarm screens
is planned.
The present system is experimental but it is already
useful. Presently
reported EQs stick until the next report comes, to
show the
functionality. Later the lifetime of the displayed
warning will be
decreased to hours.
Ligo Data Access (Lidax)
- Implemented launching of DMT monitors prior of loading
data.
- Implemented support for tape robots (Cybernetics
TL-8).
- Implemented email notification when done.
- Tracked down several memory leaks.
This essentially completes the feature list of Lidax.
Further work
is needed in testing and documentation.
Frame broadcaster
- Replaced the gigabit ethernet board with a different
brand. The old
board only supported drivers for Solaris 2.6.
Last week's LED problems
in the OSEMs turned out to be a relatively minor
problem -- two bent pins in an old connector outside the vacuum chamber
--
which was easily corrected. We subsequently closed the vacuum
chamber and
pumped down to the 10^-6 torr range. After re-optimizing the
mode cleaner
alignment to compensate for the introduction of a window in the beam
path,
we locked the mode cleaner using three SR560's and one high-voltage
amplifier, the same configuration we had been using to lock it in air.
With the chamber down and the mode cleaner locked under vacuum, we
still
see transmission through both our arm cavities, and we are pleased
to
report that this alignment survived the pump-down.
The mode cleaner control
topology, designed this summer, was tested this
week. We had designed a unity gain frequency of 80-90 kHz, but
with the
new laser in place we were able to obtain a robust and stable control
with
only a ugf of ~40 kHz. We are presently working to increase the
bandwidth
back to 80-90 kHz before fully characterizing the mode cleaner.
About two weeks ago, when
we first aligned the North arm cavity, we tried
to observe an error signal from that cavity with the mode cleaner locked
and the arm-cavity mirrors locally damped. At the time the whole
system
was in air, and the beam transmitted through the mode cleaner was not
stable enough for us to observe an error signal in the arm cavity.
Now
that the system is under vacuum, the mode cleaner's transmitted beam
is
much more stable, and we are able to observe an error signal in an
arm
cavity without difficulty. We measured the amount of time the
arm cavity
spent on resonance for a typical flash and found that to be about 80
microseconds, which indicates we need a servo bandwidth of at least
12kHz
for reliable lock acquisition of the test cavities. This is a
relatively
modest requirement, but it was beyond the capacity of a set of
strung-together SR560's. We needed in one stage a high-pass filter
with a
pole at 100kHz for effective lead compensation, and SR560's are unable
to
produce a high-pass filter with a pole above 10kHz. We tried
locking with
a reduced bandwidth but, not surprisingly, didn't have any success.
The
next step is to build the required filter out of resistors and capacitors
and see if we can acquire test-cavity lock with an actual 12kHz bandwidth
servo.
This week began with a measurement
of the seismic stack transfer function
while the system was in air. We were able to set up two accelerometers
(axis parallel to cavities), one placed on one of the chamber's legs
and
the other on the optical bench on top of the stack. To excite
the chamber
we used a loud speaker whose woofer was attached to one of the chamber's
legs. We were able to see signals on both accelerometers down
to 10 Hz
with this arrangement. To see a signal at lower frequencies,
we increased
the voltage level and blew the speaker. There was no time left to replace
the speaker, so we closed the chamber and pumped down. This measurement
will be continued once we vent again. We'd like to thank Riccardo
and
Virginio for their help.
Finally,
Crystal Systems gave us notice that our order for sapphire optics
would be delayed four months, from late May to
late September. This
doesn't impact the TNI schedule too badly, provided
Crystal Systems really
does deliver in September, and there are no further
problems (e.g. with the
coatings). It does, however, beg the question
-- if it takes a year to
produce four 10-cm-diameter sapphire optics,
how long will it take to
produce a dozen 30-cm optics?
HAM 21 Cleanroom
The cleanroom located over HAM 21 has been fully assembled this week.
The curtains have been installed, the lights and filters have been
installed and are operating.
BSC Cleanroom
The BSC cleanroom installation is scheduled to begin on 5/1/01. We
are
coordinating with the fabricator and a riggor so that when the
fabricated sections arrive, the riggor will be here to remove it from
the truck and position the sections.
Delivery schedule:
BSC clean room weldments
5/1/01
guardrail fittings and hardware
at MIT
guardrail piping
4/27/01
filter/ blower units
at MIT
light fixtures
5/15/01
clean room curtains
4/27/01
Burlington C4 clean room fabric has been ordered and is scheduled for
delivery on 4/30/01. The material will be used to make the skirt which
goes from the cleanroom to the BSC dome and for covers to go over the
large flanges when the BSC chamber is split.
Cartridge Cleanroom
The cartridge cleanroom has been designed and is on order. Its delivery
is scheduled for 5/15/01. The side curtains and top sheet are on order
and also is scheduled to be delivered on 5/15/01.
The cartridge cleanroom is needed when the BSC dome is removed during
installation of the seismic support beams.
Other
Installation of the BSC seismic support structure is scheduled to begin
the week of 5/15/01.
The LASTI high bay area has been cleaned and waxed this past week.
We have met with Horn Packaging to build a custom crate for shipment
of
the prototype STIFF seismic isolation system to Stanford. Shipment
is
scheduled for the week of 5/7/01
LASTI Modeling and Noise Prediction (Gregg Harry)
-------------------------------------------------------
I am working on including some new noise sources in the LASTI noise
code. I am working on the doppler shift noise from having the
Faraday
isolator and other optics directly on the seismic table, rather than
hanging below suspensions. I also came up with a list of noise
modeling
that needs to be done.
Dual Recycling summation cavity
-------------------------------
Malik Rakhmanov of Florida University visited Caltech last week, and
updated his
calculation of the dual recycled Michelson summation cavity field evolution.
He
wrote a matlab code with the following features: (1) only scalar field,
(2) purely addiabatic approximation, (3) only carrier. Hiro and Malik
validated
some results by comparing with the e2e calculation using primitive
mirrors.
Pre Stabilised Laser
--------------------
(Biplab) Improved the manuscript on Frequency sensor noise. Working
on producing
a table providing information about noise levels for different cases
of
nonuniformities in RFPD.
Code Maintenance & Validation
-----------------------------
(Biplab) Fixed a bug in Cavity sum module which was giving wrong results
in
certain cases of misalignments when the coated side of the end mirror
was
facing outside.
E2E at CACR
-----------
(Ed Maros) Finished Copy functionality of jobber (a program to submit
jobs
remotely to the V2500 systems).
Alfi
----
(Bruce) Finished writing of test and completion of testing of Parameter
Settings Dialogs.
Working on implementation of connection junctions.
Software Systems (Blackburn)
The FrameCPP library was upgraded this week to support writing of frames
files with multiple frames in each file and frames of arbitrary length in
time duration. These changes are being fitted into the framebuilder code
at the sites.New database table designs were placed into service this week at all LDAS
database installations. Test scripts for these new tables are being upgraded
and verified in conjunction with this change.The LDAS system can now capture "state" information from a LAL search code
running within the wrapperAPI and reuse it in a subsequent wrapperAPI job.
This has been tested and involves the wrapperAPI, eventMonitorAPI, mpiAPI,
and dataConditionAPI working together.The new dbAccess library which learns of the LDAS database table design by
reading the SQL schema used to generate the tables is now in place and has
been fully integrated into the wrapperAPI/dataConditionAPI code modules.
The integration into the eventMonitorAPI is under way.A new document on the "how to build ldas" webpage is being prepared which
provides instructions for building a stand alone version of the wrapperAPI
for the purpose of initial development of search codes by the LSC.The FCT search code is now working under the wrapperAPI and has successfully
been run as an LDAS wrapperAPI job on the LDAS development beowulf cluster.We have migrated to the new version of LAM (5.6.1) on the LDAS systems. The
wrapperAPI will be modified to use the *now* working C++ exception handling
capabilities of this release in time for the next MDC.The wrapperAPI has been modified to use the recently agreed upon time and
frequency metadata for data sequences. There is a chance that some minor
changes may still be in the works for these but they will involve very
small changes if needed at the request of the LSC.The frameAPI has been enhanced and tested to support multiple frame in a
single frame file and to support frames of arbitrary time duration as well.Development of the new dataPipeline command to be used to drive the LDAS
system in the upcoming inspiral MDC are under way and will be the focus
of development activities and testing for the next week.The new T3 "purple brick" disk drives installed at Hanford have resulted
in a 40% increase in our database insertion rate performance, proving the
earlier speculation that much of our limits are associated with file I/O
performance in the metaDataAPI tests.We are currently testing a significant upgrade in the required development
tools (gcc, tcl, linux kernel, curl, swig) for LDAS. So far we have been
able to identify that the new swig will not work and the new curl causes
a minor html test to fail. All other components seem to work well with
LDAS source code. But further testing is needed.Significant modifications to the dataConditionAPI's metadata are now under
way. These will effect the time and frequency sequence attributes presented
to the wrapperAPI and are in line with the wrapperAPI baseline requirements.
In addition to these changes, new test code is being developed to validate
the new metadata standards.
Hardware Systems (Anderson)
LHO: 14TB of disk have been successfully installed. 1TB of this
is in active use by the LDAS database and software server, however,
the bulk of the storage is scheduled for several weeks of performance
testing before being integrated into the system as the main frame archive.CIT: 6TB of disk have been successfully installed in the ldas-dev and
ldas-test systems. The ldas-test system is now operating with its database
and software server using this hardware RAID system. The ldas-dev system
has not yet been integrated.LLO: 8TB of disk have been delivered and are scheduled for installation
next week, from May 2 through May 4. It is expected that LDAS at LLO
will be unavilable until Tuesday May 8 as the new storage systems
are integrated.The LHO and CIT LDAS sites now have a low-bandwidth administrative
network (10BaseT) for managing the new storage devices as well as
network switches and UPS's. A Sun Blade100 has been installed to manage
these administrative functions as well as security and backup tasks.Partial orders for the LDAS Engineering run Beowulf clusters have been
placed (LHO mutli-processor servers).
[Vicere']Data Analysis Activities
Data analysis: had contacts with the VIRGO analysis group concerning the development of software for CB detection. I shall participate to a coming phone meeting dealing with technical issues in this respect, to keep up-to-date in view of the network analysis.
[Charlton/Wen]
* Updated FCT and FCT interface to be "correct" for LAL's
compiler flags.
Last week Alan Wiseman sent me a checklist for putting
code into LAL,
which specified a lot of extra compiler flags which are
*not* used by
default when building LDAS, but are used when the LAL
group
builds. Previously I had been using only the default
build options.
With these options the compiler enforces ANSI C and emitted
many warnings
and a couple of errors on the FCT (both interface and
FCT engine).
It also broke the FCT engine (caused it to produce garbage
results
such as not-a-number) because certain functions used
in the engine
are not present in ANSI C, notably the rounding function
rint() - see my
bug report on the FCT problem report page. Since rint()
is only used in
one line of the FCT, I replaced it by the process of
adding 0.5 and
copying to a long int ie.
double x;
long int a;
a = (x + 0.5);
/* round to nearest int */
This is equivalent to rint() for non-negative reals.
* Fixed up the remaining warnings and errors
* Provided a new, very simple test called integ_test.c
(for "integrity
test") that performs a "small" FCT with a phase function
chosen so that
phi(1) != 1 (to avoid systematic errors in that special
case) and writes
the output as text to a file. The actual text file is
checked in to CVS.
When 'make check' is run, another copy of that file is
produced and
compared against the original version. If the files differ
the test is
deemed to have failed - the developer should examine
the differences and
ascertain whether the difference is because of an error
or if it's just a
minor numerical difference (I found that the results
from optimising
with -O3 were a little different from -O2, for instance).
If the
"new" output is now the correct one, it should be put
into CVS over the
old one.
* Provided a target for checking memory leaks using ccmalloc.
FCT doesn't
leak, although some library functions do eg. printf()
* Checked FCT and interface into LAL on Monday.
MIT:
(Keith)
-Made my way through MIT purchasing / justification process for:
laptops
backup hdds
raid disk array
scsi host adapters
-Continued to search for reasonable quotes for cluster.
Should be receiving a new set of quotes for the AMD machines
from Larry this next week.
-Adjusted allowed relay domains for email
-Installed aide (tripwire) on several more nodes
-Fixed intermittent printer bug (due in part to high
speed machines on slow network)
Livingston:
-The CDS server had a disk crash on Tuesday, and we have replaced
the disk and recovered files from backup tapes.
-Waiting for quotes from cisco on a PIX system.
-Although we've been occupied with the CDS problem, the changeover
from our old web server to our new server has also been going on
in the background, and is now essentially complete. During the
changeover both the old and the new servers were running, but now
the server software on abundance has been turned off, and the only
GC server running is www.ligo-la.caltech.edu.
There are two possible problems we may see at this point. If anyone
has in the past saved a bookmark to one of our web pages, and that
bookmark specified abundance.ligo-la.caltech.edu, it will now be
necessary to edit the bookmark (or make another one) to
www.ligo-la.caltech.edu. The directory structures should not have
changed, so the only thing necessary should be to change "abundance"
to "www".
Also, if there are any links on the server which point to abundance,
they will need to be changed to www. We will be running some software
to look for these broken links, but if anyone finds one, please let
me know.
Hanford:
(See Hanford Site weekly report)
CIT:
(Lisa)
- We had a sunblade100 that would get into a infinite reboot loop.
Worked with
Larry and sun hardware technician to resolve that. Ultimately,
the problem was
fixed by installing the OS off the h/w environment CD. But the
problem showed
up before the OS was re-installed. So the original problem could
have been
hardware or a faulty OS from Sun.
- Moved the dhcp server for the 125 subnet into the server room.
Enabled the
dhcp startup and shutdown scripts.
- Brought the NIS+ tables completely up-to-date for all dhcp and modem
pool IP
numbers.
- put up a couple of web pages with more helpful info.
- Worked with Dennis Ugolini to setup 2 monitors on a sunblade 100.
- Rebuilt 2 pc's and the sunblade 100. All of these machines
have been pushed
out to visitor cubes that had no computer.
- Worked with Larry to test out the new Orinoco Access Point.
We will be using
this to support the NSF review next week.
- Created a group, shared directory, mailing list and accounts to support
the
40meter.
- Helped out some EE people with cadence.
- Put up a new laptop for Riccardo.
- Moved really a lot of equipment around.
(Sam)
Nothing to report.
(Barbara)
- Installed new version of costbook database and web forms with latest
round of changes.
- Developed a search tool for publications based on Pubs database rather
than the DCC. Updated publications web pages to use a template.
- Added a document number search to the DCC Log search tool.
But after
some discussion, Linda and I decided that browsing by category is probably
better. That is a quick change that can be done soon.
- Updated PubDocs. Posted LSC talks. Updated NSF transparency
web page
with official links now that the documents have been processed.
- Recovered the weekly compact job. I was able to show that WebBase
server
does not fully release the database when the server is shut down.
So I'll
contact the vendor to see if they know of a workaround. But when
I
submitted the compact job by hand, TimeTarget ran it 3 times.
This job is
just jinxed. So I've deleted the job altogether and will reenter
it into
the Time Target database.
- Reviewed the LDAS hardware block diagrams that I'll be working on
next.
(Larry)
-Tracking down a number of procurements. Reworking a couple for the
LDAS group.
-Interviewed a couple of people to assist in the Sys. Admin. group.
One has been
passed on to be interviewed by Albert.
-Took care of a couple of printer problems. Most were just maintenance
issues
where the printer needed some parts replaced.
-Spent a day observing the LDAS installation of their new T3 units.
-Took care of a number of accounts and e-mail alias issues.
-Working on the preparations and setup for the NSF review.
-Reviewed a number of financial plan issues concerning future GC procurements.
From: Helena Armandula <ahelena@ligo.caltech.edu>
Silicate bonding:
5 sapphire/sapphire sodium silicate bonds are in process. .
These bonded sapphire substrates are for R.DeSalvo to test in cryogenic
experiments.
Peter King
2.2 40m Lab & LASTI
I have been trying to chase up the deal about returning the
Motorola MV162 IOCs so that we can return them for a swap. Due to some
weird mix up, the vendor is apparently trying to get some confirmation
from
Motorola about their status. This should be resolved by the end of
this
week, or so I was told.
The mirror mount adapters for the gimbal/beamsplitter mirror mounts
have
come back from the Physics workshop. The other mirror mount adapters
for
the Newport U100 are near completion.
The second bake load of the remaining vibration isolation stack components
was completed by Lee. The next bake load will be the pre-modecleaner
bodies.
2.3 LIGO II PSL
I gave Thomas Frey the LIGO II laser cost and schedule data that I
had at the time. I have finally re-worked the schedule to fit into
our WBS
structure and match the one that Benno gave me back in February, but
there
is some problem with the duration dates - which is probably something
related to me not choosing some date option in Microsoft Project.
Currently I'm getting data together for costing the laser, as opposed
to
the PSL. The current cost of the PSL is based on a $350k estimate for
the
laser, which is grossly undervalued. The cost of the pump laser diodes
alone is well over this amount. The costing for the laser is largely
complete, only the cost of the Nd:YAG gain media and diode coupling
fibers
needs to be obtained. I have estimated the VME controls costs. The
last
part of the cost estimate that is missing is the cost of the hardware
for
building the cross connects and instrument rack.
From: Riccardo DeSalvo <desalvo@ligo.caltech.edu>
Alessandro still is in Japan helping Akiteru.
The digital electronics has been delivered in Hongo.
Hongo crew
Mounted the suspension on the second tower and working on its
actuators. The second tower is now practically completed, including
all
IP sensor and actuators.
The first suspension has been extracted from the tower for replacing
of
the temporary wires with the final ones. It will also be equipped
with
the actuators and bench tested for transfer functions in parallel with
the tests on the full second tower.
Edwin,
Working on DAQ
Riccardo
Assembled one test Penn State MGAS blade on a temporary test jig.
Started contract with Faimond for test ultrasound cutting of Sapphire.
Still no bid (promised) for the same job from Sonic mill.
Fred
Working on thermal behavior of flex joints.
For additional information about this report, contact sanders@ligo.caltech.edu