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The LIGO Executive Committee Agenda for Monday July 14, 2003 will be:
(Meeting time: 10:30 am Pacific Time)
Open meeting 10:30 - 11:30
Special Items: Amaldi meeting reprise, Annual Work Plan
no report
LIGO Weekly Site Telecon (Lindquist)
No site teleconference was held on Thursday, July 10, 2003.
The list of current actions revised to reflect
the status of open actions assigned through July 3, 2003 may be found at
ACTION
LIST.
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
ACTIVITY
| 07/10/03 | Packages | Faxes |
| In | 31 | 37 |
| Out | 8 | 21 |
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)
CONSTRUCTION:
Although the Construction Cooperative Agreement has ended, there are a few items yet to be completed. The glass vestibule on the LHO Laboratory Building will be completed by the middle of July due to the long lead delivery of the aluminum frame. Also, some final items on the LLO pre-fabricated storage building will be completed this week.OPERATIONS:
Another hearing of the Benton County Board of Adjustment will be held on July 10 to discuss the special use permit application of Maiden Wind Farms. LIGO and BGPL will be represented at this hearing by Fred Raab, Pamela Krueger, of Perkins Coie, Paul Boynton, of the University of Washington, and T.C. Rich, of the Washington State Attorney General's Office.
Florence Kaufman and Ed Jasnow are continuing to develop a collection of operations procedures for the sites.
SUPPORT (Baldon, Lloyd, Tischler)
>Irene Baldon
Out of the Office on Monday the 7th.
Accomplishments:
Out of the Office on Monday the 7th.
Accomplishments:
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 a what if schedule to assist Phil with response to NSF regarding advance funding.
Project Web Site for posting schedule and progress related data continues to be updated with the latest and greatest.
I have distributed a proposed outline and writing assignments for contributions
for the Operations Annual Report and Work Plan for FY 2004. I am
requesting input by Friday, July 25, 2003 (sooner if possible). I
have also prepared a first draft of the budget model for FY 2004.
The total exceeds the $33 million funding profile by $438,186 and includes
no reserve. Please review for potential reductions or omissions.
The LIGO Change Control Board met on June 23, 2003 as part of the normally scheduled Executive Committee Meeting. A .pdf version of the minutes can now be found at: http://www.ligo.caltech.edu/~phil/ChangeBoard/M030132-00.pdf
The following change requests were discussed:
Change Request CR-030008--the current cost estimate is less than
the threshold requiring formal approval of the change board. This
change request is for information only.
Change Request CR-030011--External Pre-Isolation (EPI) was approved.
Change Request CR-030013--Atomic Clock Timing System was approved.
Signed originals of the documents will be found in the document control center.
Florence has prepared an analysis of the staffing levels for the third quarter and the adjustments that should be made to the Operations budgets to reflect actual levels verses the budgets. I have prepared CR-030014, which reduces the Operations budgets by $265,676.
The change request and analysis has been distributed to the task leaders affected.
I propose to review this change request during the Monday, July 14, 2003 meeting of the Executive Committee. :
| CR-030014 | Operations Staffing - Adjustment for Third Quarter Actual Costs | P. Lindquist | July 10, 2003 |
From: Cindy Akutagawa <cindy@ligo.caltech.edu>
LLO Weekly (Zucker)
-------------------------------------------------------------------
-------------------------------------------------------------------
Announcement: Rich Riesen has accepted the new role of LLO
Site
Safety and Security Coordinator.
He will work closely with me to insure
a safe and secure working environment for all LLO staff and visitors
,
and to help protect our sensitive instruments from contamination and
damage. Please join me in welcoming Rich to this new responsibility.
Interferometer Commissioning
--------------------------------------------------------------------
Continued work on establishing a performance baseline in preparation
for
a vacuum incursion, currently planned for 7/23/03, to install IO baffles
and correct asymmetry and recycling cavity length errors. Gary Traylor
will take the lead organizing the vent itself, and head up the
ITM moving team; Harry Overmier and Rich Riesen will lead additional
teams to install the new baffles in HAM's 1 and 2, and to rig doors
and
cleanrooms, respectively.
We continued measuring and tuning wavefront sensor
heads and characterizing RF phases. We also bounded noise effects
due to the anomalous PRC->AS coupling reported previously, and found
it is not a dominant problem (yet) at most frequencies. We have been
trying to develop accurate and routine methods for optics
characterization, including MC and arm cavity ringdowns, with a view
toward establishing routine assays to monitor for optic degradation.
Locking per se has been reasonably consistent over the week, but we
are
again having difficulties negotiating the gain and power reallocations
associated with reaching the low-noise mode (a.k.a., running through
the
"up" script). We are now systematically characterizing
signal levels prior to transitions that blow us out of lock to find
clues to what is saturating.
Safety and security (R. Riesen)
--------------------------------------------------------------------
The LDAS machine room access has been changed to accept all valid access
cards. All laser safety signs (site wide) have had burnt out light
bulbs
replaced. I have been in contact with Bill Tyler and he will send me
the
list of safety items that need addressing. LVEA crane inspection has
been scheduled for Monday 7-14-03 (8am-4pm).
The Toyota forklift has been inspected and serviced.
The Power Scrubber has been inspected and needed replacement parts
will
be installed Thurs. 7-10-03 The riding sweeper will be serviced Thurs
7-10-03 (I believe it will need a new battery).
Continuing work on the pre-vent punch list. Working with Ed and Allen
in
getting out of the in-town warehouse.
E2E SOS Modeling (T. Findley, S. Yoshida)
--------------------------------------------------------------------
We continued working on small optics box. We focused on local gain
calibration. We found that the calculated position damping characteristics
behave as expected. When we gave the gain inputs of 2000 to pos, pit and
yaw, the position signal decayed in 20 seconds by an order of magnitude.
However, in the same run the yaw and pitch signal did not decay (they
seemed to rather grow). We are investigating the cause of this observation.
General laboratory support (J. Kern)
--------------------------------------------------------------------
Spec-ed and ordered RD modulated, fiber coupled laser diodes for Rai.
These to make RF PD calibration of ISC tables easier. Working with
Rich
to transfer the administration of the Laser Safety Interlock/Site
Security System to him. Gathered together various work plans and check
lists from previous vents at LLO, and distributed to the teams
responsible for the various tasks in the upcoming vent. Also collected
field notes and sketches in order to revisit use of the CAS system
2
years ago, when we used it to relocate the BS and ITM-y following use
of
an incorrect prism constant during installation.
Civil & vacuum facilities (MZ for A. Sibley):
-------------------------------------------------------------------
The new warehouse is fully commissioned and stored equipment is now
being moved from the Baton Rouge warehouse back to our site. We are
especially grateful to Ed Chargeois, who came out this week with a
GSA
representative to help us decommission some unneeded equipment and
to
ship some beamtube bakeout components up to Hanford.
Commissioning of the new front entry gate hiccupped due to an incorrect
rail being shipped from the gate vendor; a replacement is on its way
and
we expect the gate to be available for operation next week. A review
of
protocol and procedures will be held and suitable instructions issued
to
staff and visitors prior to activating the mechanism.
The lightning and grounding system completion continues to wait for
a
long enough stretch of dry weather to make the soil workable.
LLO seismic retrofit (J. Kern)
------------------------------------------------------------------------
Bid package for the External Pre-isolator was completed last week and
sent to Ed Jasnow for release. Bidders were requested to return their
responses by July 18. Engineering estimates of projected procurement
costs for LLO/LASTI installation are still in the works. Building up
a
hardware model of the bypass tree. Working with Amit and Brian to clear
up some inconsistencies in the proportional valve calibration manifold.
General computing (S. Roddy)
-----------------------------------------------------------------------
Succesfully set up and tested a disk based backup server. The server
is
using an existing rack mount PC that we already had on site. I added
a
3ware RAID card and 4 200 GB hard drives to it which yields .6 TB of
RAID 5 storage for backups. The software that I evaluated with this
unit
is the arkeia backup software. I was able to successfully set up the
software and back up a windows client and a linux client in about 2
hours of setup time. The majority of this time was in configuring the
server. The client install only takes about 5-10 minutes. So far I
think
this would be suitable for a backup solution to replace the current
one
on site. We must do something since we have outgrown the tape library
here. I also found the software easier to use than our current solution.
Still working on some pages for the support.ligo-la.caltech.edu site.
I
will roll out more information to this site as I have time.
Spent all day Saturday working on our web server applying some security
patches. The web site will be moved very soon to some new hardware.
Made some firewall changes and tightened down some of the access lists.
Found some bad RAM in one of the machines here via memtest and replaced
it.
Looks like Bellsouth is finally going to install the ISDN line for our
dial up access to the observatory. Allen has spent lots of time on
the
phone back and forth with Bellsouth working on this. It should be an
easy thing for them to do, but Bellsouth has been notoriously difficult.
took care of the usual round of user and software issues this week also.
Shannon
CDS Software (Ash Khan)
-------------------------------------------------------------------------------------------------
1) Building EPICS controller for the tidal servo to load the paladin
file automatically.
2) Continuing work on Watchdog system.
3) Worked with Chethan on dust montior problem.
LDAS (Igor Yakushin)
-------------------------------------------------------------------------------------------------
1) On Sunday night the temperature monitor in the control room shut
down
the power to LDAS computers. To prevent it from happening again without
a real reason, the temperature is now measured not in the communication
room but directly behind the racks and the threshold value was raised
from 85 to 92F.
2) 3 T3 disks and 1 battery failed. Two of the disks are in the same
T3
where raw data from ifo is written. I have just received the the
replacement disks and will install them today.
3) Configured new datacon and beowulf machines.
LDAS data analysis.
Still studying how well waveburst detects the hardware injections.
no report
no report
We have been continuing to address the TNI noise curve on two fronts. First, we have been focusing on scattered light noise, which we believe is the dominant noise source at intermediate frequencies. The challenge there is to understand just where the noise in entering the system, and how, and then to eliminate it. We have been adding additional scattered light to the system at various points, measuring the noise, and developing models for what we measure.
Second, we have been working to improve the high-frequency noise by improving our laser frequency stability servo at high frequencies. This requires additional electronics, which we have been developing in collaboration with CDS. Michael Zhang just finished his first servo board and has been debugging it.
Eric also spent last week at LLO working on locking issues.
--------------------------------
Simulation and Modeling (Bhawal)
--------------------------------
Weekly Physics Meeting
------------------------
Ken Yoshiki from LLO discussed with Hiro and Biplab about some problems
he
is having in getting LIGO longitudinal transfer functions. Virginio
from
LHO explained about his and Luca's effort to diagonalize the WFS sensing
matrix.
SURF
--------
(Hiro)
* LIGO performance evaluation using as built phasemap (Raghu Dodda)
The program to convert the measured phase map to the format
FFT accepts
has been completed. A simple matlab code has been written to
see the data
visually to confirm the conversion. A meeting was held among
Bill Kells,
Raghu Dodda, Biplab and Hiro to discuss the FFT run.
The main focus is to understand the effect of the surface roughness
of
the arm test masses. So the first run will be the following
:
Use the ROC of the 4 LHO 4k arm mirrors to calculate the RM ROC
and the
input beam parameter to define the perfectly mode matched system.
Run FFT using idealistic surface, but with as built arm mirror
ROCs.
Phase mass measured within 15 cm will be extended to 24cm by
a simple
algorithm. If the run is ready before this algorithm is completed,
the
outside region will be simply filled by 0. Place 4 phasemaps
on the
surfaces of the 4 arm test masses to compare the performance.
Future study will include the realistic beam splitter, RM and
thermal
sensing effect.
* Signal generation module (Jeff Jauregui)
Two e2e primitive modules are under development, one to generate
the GW
source and the other to convert the signal to the phase change
induced
in the field propagation in two arms.
* Noise study (Xiao Xu, Juri Agresti)
Two kind of noise hunting simulation is going on.
One is the evaluation of the effects of various known noise
sources,
like electronic and digitization. The best noise curve after
turning off
all known noises in SimLIGO is still higher by fair amount over
the revised
SRD 96 curve at around 100 Hz. The mirror motion noises of the
4 test
masses account for this excess, and the actual cause is being
hunted down.
Second is the one guided by Stan's talk in October 2001. Finally
we are
at the stage to do his homework. Simple cases, like asymmetry
of two ITM's
losses, are the being investigated first, and harder problems
will be
addressed gradually.
* Radiation effect (Yoriko Yanagi)
The Interferometer response against the change of the input
laser
direction is being studied. This will be done with and without
the
radiation pressure to see how the effect plays in LIGO I.
Transfer Fn of LIGO for changed length
----------------------------------------
(Biplab) Interacted with Ken and Rana from LLO to generate proper Transfer
Functions for LIGO.
WFS Signals
-------------
(Biplab) Observed that the Non-Resonant sideband demodulated signals
at the
reflected ports (WFS 3 and 4) reduces as the IFO goes from a
hot state to
a cooler one. Also, signs of some of the signals get changed.
Looking at
the field amplitudes and contribution of various beating terms
to
understand these.
Code development and maintenance
---------------------------------
(Hiro)
The CVS source codes are updated so that the latest SimLIGO can
be
simulated. Code modifications of expression
parser is finally in CVS to speed up (some) the FUNC calculation.
(Melody)
- Continued working on a prototype that performs dynamic linking.
Started working on getting the scripts to configure the
working
environment (OS, directory, etc).
Currently working on shared library source code.
Alfi
-----
(Bruce)
- Writing full Alfi documentation.
- Cleaned up some obsolete
/ incorrectly enabled menu options.
----------------------------------------------
LIGO Data Analysis System Software (Blackburn)
----------------------------------------------
The new release of LAL and LALwrapper were released this week. The new
code
was checked out from the UWM CVS repository and built on the LDAS DEV
and
TEST systems. Two of the DSOs were found to not execute properly under
LDAS.
These were the waveburst and power. The LSC authors of these were contacted
for advise. The waveburst require changes to the input parameters and
a
change to one of the database tables. The power DSO was more problematic
and required changes to source code. These changes were tested on the
LDAS-
TEST system and found to fix the problem. We are now waiting for the
UWM
group to package up a release with the fix before retesting and finally
pushing these new distributions to the sites.
The metaDataAPI is now fully threaded for getting information out of
the
LDAS database. This has been tested all week and shows significant
improvements
in the database interaction times for ldas jobs. The insertion of information
into the database with threaded functions is still under development,
both
at the C++ and the TCL levels.
With the ability to compile with optimization and inlining, combined
with the
threaded database extraction routines, LDAS on the development system
is now
able to sustain over 1000 jobs per hour. This is up from about 700
jobs per
hour prior to these changes.
The frameAPI and eventMonitorAPI continue to have occasional core dumps
under
the new optimization and inlining compile levels. These two APIs rely
heavily
on hash maps in the standard library so a standalone threaded program
was
developed to see if this was the source of these core dumps. However,
the
hash map code tested without thread issues and is no longer considered
the
source of these issues.
New mpiAPI code introduced this week is now causing about a 1.5% failure
rate
on the development system. The new code was intended to address the
dual SMP
hardware configuration of the new nodes. It looks like there will be
some
debugging necessary to remove this unwanted failure mode.
Installed the latest fixpak for DB2 7.2 onto ldasbox2. It still has
problems
on RH9 specifically, db2start does not return. Tried setting the
LD_ASSUME_KERNEL environment variable in .cshrc and .bash_profile and
in
some db2-specific cshrc/profile scripts, but it did not help.
Several open problem reports on the frameAPI and dataConditionAPI were
worked on this week. These address user experiences post 0.7.0 release
of
LDAS and are directed at making the creation of RDS frames and other
user
frame files more friendly.
Several failures in the computerized LDAS account authorization system
occurred
over the past week. These seem to be related to bugs or configuration
issues
in the apache web server. All account which experienced failures were
added by
hand successfully.
---------------------------------------------------
LIGO Data Analysis System Administration (Anderson)
---------------------------------------------------
Caltech
-------
(Dan Kozak)
* Finished re-archiving all NDAS frames to 9940B density.
* Dealt with an unusual number of SAM-QFS problems, mostly stuck tapes
but also an inexplicable "fibre channel goes offline" situation.
* Helped with a similar FC problem at LHO.
* Provided guidance in configuration of new FC switch at LHO.
* Worked with our new 3510s to get them online. With some help
from Sun,
it looks like we should have a big filesystem configured later
today
(some RAID sets are being rebuilt as we speak).
(Al Wilson)
* Worked on nodes in cit Beowulf cluster, pre-wiring cat5 cables in
groups
of 8 for easy installation.
* Sent the new updated image for nodes to sites, LHO has started cloning
* Updated admin scripts to deal with lager clusters
(Stuart Anderson)
* Incrementally adding nodes to the large LDAS-CIT cluster--currently
at
78 out of 210.
* Installed 2 more Sun 280R servers in the LDAS-DEV system: 1 for nightly
LDAS builds, and 1 for database performance testing.
* Re-wiring many of the computers in 605 Millikan to prepare for the
Ethernet switch upgrade to Gigabit connections for the 8 node
development Beowulf cluster.
MIT
---
(Keith Bayer)
* Finalized equipment for PC raid units and received quotes.
* Working on LDR to transfer double coincidence S2 data from Caltech.
Livingston
----------
(Igor Yakushin)
* On Sunday night the temperature monitor in the control room shut down
the power to LDAS computers. To prevent it from happening again
without
a real reason, the temperature is now measured not in the communication
room but directly behind the racks and the threshold value was
raised
from 85 to 92F.
* 3 T3 disks and 1 battery failed. Two of the disks are in the same
T3
where raw data from ifo is written. I have just received the
the
replacement disks and will install them today.
* Configured new datacon and beowulf machines.
Hanford
-------
(Greg Mendell)
* Continuing to work with Robert Schofield to create an intersite S2
PEM RDS for his analysis. There have some problems with
the archive at
CIT that Dan Kozak has overcome, and I have been working to
update the
createrds driver script to better handle certain error conditions.
* Working with Ben Johnson to prepare for recabling the fiber channel
devices in LDAS room at LHO to work with the new fiber channel
switch.
(Ben Johnson)
* Received new nodes 46 and 69 from ASA. Both boot now and are running
memtest86.
* I have basically installed the new system image on new nodes 44-140
(less #'s 46, 69, 82, 117, and 121; no show stoppers though).
I am
editing node 140 with localizations. I plan on making it the
"golden
client" at LDAS LHO.
* A T3 disk failed on t3-5, this was successfully replaced by a Seagate
Cheetah 5 disk, July 9 2003.
* The D1000 connected to the admin box may have a bad disk, or at least
the filesystem was corrupted somehow. The system log messages
point to
c1t10d0 as the possible source of trouble. Unmounting /d1000
and running
fsck on the D1000's filesystem appears to have cleared the problem
(it
reported "FREE BLOCK COUNT(S) WRONG IN SUPERBLK".
* Installed SANbox2 software on admin (see admin:/usr/opt/SUNWsmgr2).
Configured all ports on the new FC switch as TL ports.
-------------------------------------------------
Data Analysis Activities (Anderson for Lazzarini)
-------------------------------------------------
(Greg Mendell)
1) Last week I updated the knownpulsardemod DSO to work with the latest
LAL code; this was included in the release of LAL/LALWrapper Version
2.1
this week.
2) Continued work on the stackslide DSO. The goal is to have the
first
working version completed by the August LSC meeting.
3) Worked with my SURF student Anah Mourant on her pulsar parameter
estimation code for LALApps. The code works on simulated data and will
be used to test actual analysis code in the future.
(Igor Yakushin)
Still studying how well waveburst detects the hardware injections.
(Kaice Reilly)
I have been trying to get the > 100000 ilwd files output from the
datacond in a more managable format. Several attempts to read this
into matlab have failed but I think I have a system now. It
takes
several hours for the process to fail or not. Work on the stochastic
dso
is slow. I am finding that I have to convert many data types in order
to
pull the functionality into lal from lalwrapper. Also, I have
been helping
a graduate student at Stanford with a chapter in his thesis.
(Peter Shawhan)
* Continuing to work with Evan Ochsner on new methods to veto "garbage"
triggers in the inspiral search. This week we managed to get
the standard
inspiral search code running in standalone mode, to enable code development
and debugging.
* Re-ran the LDAS job which found the loudest event candidate in the
S1
inspiral search. Found some discrepancies in event parameters,
which I
tracked down as being due to two code changes made since the job was
originally run. Verified that the current chi-square calculation
in the
inspiral search code does what it is supposed to do.
* Created a "LIGO analysis segment wizard", an interactive tool to
generate lists of segments of good-quality data, where the user can
choose
which data quality flags to heed and which to ignore. This uses
information
from the <a href="http://tenaya.physics.lsa.umich.edu/~keithr/S2DQ/S2seglists.html">S2
Segment Data Quality Repository</a>
and is now available as a LIGOtools package.
---------------------------
General Computing (Wallace)
---------------------------
MIT:
(Keith)
-Put tubera (SB1000) onto gc network to allow greater access
-Fixed library PC to support external Sony DVD burner
-Looking into our current relays after spam was sent out from mail
server
-Ordering replacement memory for laptop
-Ordering 180GB SCSI drive as backup / replacement for gc file server
-Working on wireless router replacement in NW17
-Working on SAMBA/SSH tunnel for gc windows boxes
Livingston:
(Shannon)
-Successfully set up and tested a disk based backup server. The
server is
using an existing rack mount PC that we already had on site.
I added a
3ware RAID card and 4 200 GB hard drives to it which yields .6 TB of
RAID 5 storage for backups. The software that I evaluated with
this
unit is the arkeia backup software. I was able to successfully
set up
the software and back up a windows client and a linux client in about
2
hours of setup time. The majority of this time was in configuring the
server. The client install only takes about 5-10 minutes. So far I
think this would be suitable for a backup solution to replace the
current one on site. We must do something since we have outgrown the
tape library here. I also found the software easier to use than our
current solution.
-Still working on some pages for the support.ligo-la.caltech.edu site.
I
will roll out more information to this site as I have time.
-Spent all day Saturday working on our web server applying some security
patches. The web site will be moved very soon to some new hardware.
-Made some firewall changes and tightened down some of the access lists.
-Found some bad RAM in one of the machines here via memtest and replaced
it.
-Looks like Bellsouth is finally going to install the ISDN line for
our
dial up access to the observatory. Allen has spent lots of time
on the
phone back and forth with Bellsouth working on this. It should
be an
easy thing for them to do, but Bellsouth has been notoriously difficult.
-Took care of the usual round of user and software issues this week
also.
Hanford:
(Christine)
-Most of the time has been spent on the OC3 upgrade. Installation of
the
equipment has taken place. There have been some problems with the network
since
the installation and the issues are being worked on along with more
testing of
the new network.
CIT:
(Veronica)
- LIGO website: continue working with George Stokes on troubleshooting
the DCC database.
Training Cindy Akutagawa in web-related work and general computer skills
for her new assignment with the visitors program. Setting up a database
of
visitors, postdocs, and visiting staff to provide a web interface for
easy
input/output.
Updated the roster database and did some troubleshooting.
Posted various updates to parts of the LIGO website.
Posted new account information at the Internal Bulletin Board. Converted
a
pdf document for Florence so that it is compatible with her Acrobat
version and is usable.
Tracked digital still camera specs for Ken Mailand.
- LSC website: working with Peter Saulson on changes/updates to the
website. Posting updates as Peter dispatches them.
- Project Science website: user support and updates of the database
of
attendees.
- CaJAGWR website: updated the roster webpage.
(Mike)
-Loaded three pc's for additional surf students that showed up this
week.
This included loading 2000 pro and General Computing Software plus
additional engineering packages. These are new temporary workstations
that
I had to double up in existing cubicles/offices. This turned out to
be a
project, for this meant setting up a complete setup with monitors,
keyboards, mice and enabling multiple Ethernet connections.
-Reloaded Lee Cardenas' old pc that is going to be used for his lab
across from his office that is going to be used for taking measurements
only. I also went over a few software/hardware issues that he was having
on
his updated pc that I swap him out with.
I still have to load some additional software to complete this reload.
-Started loading two new pc's for Millikan conference room and SCR
these
computers are to use for VRVS, virtual conferences.
(Lisa)
- Currently have a beta of a Bayesian spam filter running. I'm
still trying to
determine if the configuration requirements will be workable in our
environment.
- Setup a couple of new accounts.
- Heavy monitoring of the mail servers and worked on a couple of glitches.
- Currently running a beta of Sun Management Console.
(Larry)
-Worked a couple of computer setup issues. Nothing major just some
mounting
problems and nfs daemons needing to be restarted.
-Still spending time with helping get the SURF students setup and going.
It
appears things are starting to settle down.
-Resolved a couple of hardware issues on different computers. The SUN
box still
needs to be tested.
-Worked with the DCC on different file issues. Also, worked with George
a little
on his rework of the database system for the DCC.
-Spent time trying to retrieve more lost documentation on some purchases
for the
p-card people.
Made a number of purchases, mostly supply items.
-Most of the week was spent on misc. user support items. Setting up
and fixing
accounts. Helping users with their setups and changes.
AdLIGO
Suspensions
Had very successful meetings with Caroline Cantley
and Justin Greenhalgh last week here at
Caltech. Working on quad earthquake stop positioning. Had a meeting with
Russell and Caroline about earthquake stops this morning. Coordinating
for our team visit to
Gin Gin
John Jacob has written and requested the two Gin Ginsupsensions
be shipped to them around July 31st. To this end, I've been working with
Doug on designing and fabricating optics containers that will be used to
ship the sapphire masses to the Gin Gin
facility. Bob Taylor reports that the Gin Gin
parts are in the bake ovens. The magnets will be scanned today. The alum
and stainless parts still have a day to go in the ovens. Still
waiting for parts from CES to assemble the Gin Gin
and AdLIGOosems.
From: ctorrie <ctorrie@ligo.caltech.edu>
SUS Meeting
Caroline Cantley and Justin Greenhalgh
visited from the
Discussions on how we step forward in order to produce a prototype
quad were held with Dennis Coyne and JaneenRomie,
with input from Helena, GariLynn and Norna
Robertson.
Norna Robertson, Mike Lloyd and I have held further discussions related to the ETM layout and the actions that are pending.
MC
Suspension # 2 has been prepared and delivered to Stanford. Mark Barton is visiting Stanford in order to look at magnetic field effects around the structure.
RM
Mike Lloyd and I have been testing pre-prototype set-ups for the controls
prototype suspension. These include a rotational adjuster, an eddy current
damper to damp the upper blades internal mode and an upper mass with pitch
and roll adjustment.
ETM
Mike Lloyd and I are working on a rotational adjuster for the upmost
stage in the ETM suspension. We are also looking at the table cloth arrangement
around the upper intermediate and upper mass.
Janeen has started to consider the earthquake
stop and their associated brackets around the lower intermediate and test
mass.
The following is a summary of the
lasers working group telecon held
last Thursday.
The performance test of the new LZH laser heads is
currently underway.
The tests include measurements of the thermal lensing, birefringence,
aberrations and small-signal gain measurements.
Stanford have had some
problems with a parasitic mode with their
end-pumped slabs. A compound was tried to spoil the total internal
reflection of the parasitic transverse mode but some problems remain.
ready by November. In the meanwhile, work on the system is proceeding
with
the old heads.
Andrew has mounted the 3 OSEMs
on the two third masses of each
quad-chain. He has contracted the electronics necessary to drive
the
OSEMs. After he finished testing the OSEMs
out he moved the two chains so
that they are now about 2 inches apart and is now ready to start driving
them.
EPIs
We are still working on a HEPI-BSC blended modal controller,
which
continues to be quite difficult. We are also working on a MEPI-HAM
controller, which combines both local and modal feedback. In the MEPI-HAM
case the combined controller seems to be easier to design than the
plainer
modal controller. After exploring this concept we plan to try
it out on
the HEPI-BSC plant to see if makes designing a blended modal controller
easier.
For additional information about this report, contact sanders@ligo.caltech.edu