The Project Control Meeting
for Monday July 20, 1998 will be
a Cost and Schedule Review
(Meeting time: 10:00 am Pacific Time)
Special Items:
1. Gate Valves:
Status at GNB:
Two more Livingston valves shipped so only one remains at
the factory.
At Hanford GNB has completed their work on two more valves,
cycle testing was performed on WGV12 at the Y-mid, and PSI
has just started the final leak test of this valve. WGV12
was cycled overnight in order to accumulate 50 cycles. The
replacement bearing unit is quiet.
WGV11 at the Y-end has been reinstalled and will be ready to cycle
and leak test this week. While millwrights are putting the
spool back GNB has moved over to the X-arm. Adjustments
are being made to WGV19(X-2 end) to square up the closing action.
WGV15(X arm mid) has been reworked and is currently having it's
bellows leak tested. Work on WGV16 has restarted since belts
were found.
a. WGV11 (Y-end) Ready for cycle test and in-situ leak test.
b. WGV12 (Y-mid BT) Cycle testing complete, in final leak test.
c. WGV14 (X-mid) Complete except for in-situ leak test.
d. WGV17 (Y-end BT) Complete except for in-situ leak test.(First BT
bake)
e. WGV19 (X-end BT) Adjustments in process. Spool should go back tomorrow.
f. WGV20 (X-end) Oversize O-ring groove - in process.
g. WGV16 (X-mid BT) Belts installed. Several baseline cycles performed
prior to removing the valve.
h. WGV15 (X-mid) Bellows leak testing underway(new bellows installed).
2. PSI has taken RGA data for the vertex (last of the LVEA).
They have not transmitted the data to us yet but report that the
total pressure is 4 x 10(-9) torr. This is to be expected since
this volume has the greatest ion pumping speed.
3. Installation activities:(Kyle Ryan)
PSI/GNB are continuing gate valve inspection and repair across the site.
LIGO's Bob Vincent is on site and participating in these activities
as is
PSI's Rich Bagley. In summary, Y-2's 44" BT gate valve at the
Y-mid station
was cycled (opened/closed) 50 times this week. This was done
to convince
LIGO
that this valve was not getting "louder" with use. X-2's VE gate
valve in
the
X-mid station was determined to have a bad ball screw (replacement
on the
way)
as well as a leaking conflat flange at the bottom of the ball screw
bellows.
X-2's BT 44" gate valve is presently being opened/inspected.
X-2's 44" BT
gate
valve at the X-2 end station is suspected of having a bad ball screw
but LIGO
will need to help determine any action on this valve.
All of the bake blankets have been installed on the VE at the X-arm
end
station.
95% of the blankets have been removed from the vertex section in the
corner station
and have been boxed up to ship to llo.
Livingston Installation (Allen Sibley)
All vacuum equipment is now aligned and installed in Livingston, with
the
exception of one GNB gate valve that is expected on site early
next week.
Work is on going installing piping, electrical and instrument support.
Grouting the VE will beginning after verification of the grout material
and
method, which is now in process.
Turbo pumps supporting CBI have operated well in the last week with
no lost
time due to pump shut down. The pump returned to Edwards for repair
is not
back, but a spare pump is now on site and available if required.
WBS 1.1.2 Beam Tube (Jones)
a. Livingston Installation
Data aquisition problems are still not solved for the X arm
acceptance test accumulations. The system has been changed to
another type, and still does not work. CBI is checking for
other damage. A trial accumulation was taken on the night of
7/14, without temperature data; that RGA data has not yet
been processed. The RGA at port 5 (on X1) has cracking patterns
nearly finished and the RGA system at port 14 (on X2) is now
cooling from its bake; this will be leak checked on 7/20.
All helium bagging tests on easily tested joints of the X arm
have been completed except for the end station termination
valve stub. The X arm pressure (near the pump inlets) is
at 3E-8 torr and this increased to 1.2E-7 torr after an
overnight accumulation. The pressure at the midstation
bellows (pumped separately) is 5.3 torr.
The two roughing pump carts and four type B hardware sets have
been installed on the Y arm; leak checking those connections is
underway.
All of the X arm control supports have been measured by GPS,
and one third of them have been post processed; results are
still within the 5 mm tolerance. All of the enclosure holes on
the site have been cored, and all PVC sleeves have been
installed. The transparent caps are due to arrive next week.
Sixteen of the 198 supports on the Y arm are being adjusted
as a result of the laser/string alignment checks.
There have been evidences of lightning strikes on the beam
tube enclosure, with at least some charge reaching the beam
tube. Last week, CBI personnel reported seeing a blue corona
at one of the beam tube supports. At a different time, one
of the CBI personnel felt a discharge go into his buttocks
and out his hand as he was leaning over near the beam tube
and reaching toward a metal box used to transport gear. The
CBI employee walking the top of the X2 enclosure this week
found a hole at the top of a caulked enclosure seam, with
approximately 1.5" dia. hole on the inside, with minor
spalling of the concrete. The base of that enclosure showed
spalling evidence on the outside, at the slab level. The
beam tube is currently grounded by vitue of connections to
PSI equipment at the corner and end stations; the PSI
epuipment is apparently grounded only through anchor bolts.
Stapfer is checking into this.
> 1.1.3 & 1.1.4 BTE and Civil Construction (Fred Asiri)
>
> >>Issues:
> Hanford:
> 1. Water System Integration:
The apparent low bidder, Apollo has been notified about
the
reasult of the bids. Since the bid value was over $100K,
the
contract document and justification for the work has been
sent to NSF for approval.
In general term this work, will integrate the watersystem
components (Well Pump, Domestic Water Tankage, Fire Water
Tank,
Irrigation and Water Treatment) to a fully automated standalone
system.
2. New Staging and Storage Building. Bids were received on July 14,
1998.
The public bid opening took place at the Hanford site.
Bids for the new building came in significantly
higher than
expected ($734K vs.$502K). We are presently evaluating
our cost
estimate.
> Livingston:
> 1. Worked on documentation for the final close-out of the Hensel
Phelps contract. The final settlement amount has been
submitted to
CCB for approval.
Washington Construction (Otto Matherny)
Levernier
Levernier submitted a plan of action
where the 17 outstanding
items will all be completed by the end
of July 98. Eight of
the 17 are already complete.
The largest of the outstanding items
is the completion of
the FMCS.
OTHER ITEMS
The bids for the new building have
been received. They were
somewhat higher than expected. We are
presently evaluating
our cost estimate, the bids and the
building design.
We received four proposals for the mechanical
maintenance
work. The proposals will be evaluated
by the end of next week
and a contractor will be selected.
Livingston Construction (Gerry Stapfer)
Several additional leaks have been identified during the recent thundershowers.
HPC's subcontractor has been notified and should address the problem.
The poor quality of the incoming electrical power continues to shut
down the HVAC systems. DEMCO has started the construction of a temporary
substation which should alleviate the
problem.
The contractor has installed the backup FM-200 fire suppression system
and provided the training for this system to the LIGO personnel.
Date: Thu, 16 Jul 1998 18:31:57 -0700
From: David Shoemaker <dhs@ligo.mit.edu>
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
-----------------------------------------------
Implementation Group -- Mark Coles/Fred Raab
-----------------------------------------------
40m (Jennifer Logan)
--------------------
Following the replacement of our laser tube last week, we have spent
this week tying up the ends of some of our RF measurements and
commencing lock acquistion studies of the full interferometer after
our
recent detailed studies of the power recycled michelson. Once we
re-established the correct gain settings, following our increased laser
power, the interferometer has been locking for periods of up to ten
minutes or so which is enough time to start looking at its behaviour
and in particular we want to start using the full capabilites of the
data acqusition system to start analysing the many channels of data
that are now available to us. Professor Alan Weinstein has taken
up
the task of getting the SMAC model for the 40m running again with a
view to doing validation of SMAC's predictions.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
Interferometer sense/control (Zucker)
-------------------------------------
Most of us are busy moving and preparing for
final design reviews.
ASC optomechanical design (Zucker for Mason & Smith)
----------------------------------------------------
Issued layout for IOT7 with bill of materials. Matt is getting
quotes
ready to start procurement as soon as/if FDR committee approves next
week. All three IO optical tables arrived (unfortunately at Building
20; they will be moved over to NW17 today or tomorrow).
Next week Matt has been called back to work on vacuum
cleaning qualification at Hanford, and Myron was called to
deal with an emergency on his previous (MIT/NASA)
project. This is a bad time to be short-handed.
Control design (Fritschel)
--------------------------
o Preparing for ASC & LSC final design reviews. New work being
done
on the wavefront sensor servo design.
Acquisition design (Ware)
-------------------------
Shortened acquisition time by disabling L- loop until State 3 acquired
(duh). Apparently cured the problem of some initial conditions
causing the recycling mirror to oscillate by modifying the l+
controller (obviously, it's impossible to state this definitively,
the
set of ICs being \aleph_1, but the ICs which caused this oscillation
don't cause it anymore). Continued working on documentation for
the
FDR.
-------------------------------------------
Lasers and Optics -- J. Camp
(1.2.1.1.2, 1.2.1.1.3, 1.2.1.1.4,1.2.1.1.5)
--------------------------------------------
Prestabilized Laser -- Peter King
--------------------------------------------
- L. Cardenas has installed both the 2k and 4k IFO IOO/PSL optical tables
and enclosures.
- The user screen for the frequency servo phase shifter has been
completed. The following signals can be adjusted from the interface:
the
phase and a 180 degree phase flip; and the rf amplifier output.
In
addition the output of the 21.5 MHz oscillator is monitored.
J. Heefner and R. Bork helped debug the EPICS records
database
which aided in getting the phase shifter screen up and running.
- R. Abbott has installed the new 21.5 MHz electronics and cabling in
the
PSL Lab.
- An attempt to lock the PSL to the reference cavity with the new 21.5
MHz
electronics was not successful due to some extraneous rf pickup on
the 21.5
MHz photodetector. In addition, a problem was found with the
bias
connection to the photodetector.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
No report.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
No report.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
REO Contract - COC's coating: REO is performing calibration runs to
coat the
beam splitters, we are assisting with the measurements. Inspected the
"as
received condition" of all coated COC's and found that more than 50%
of the
received parts had streaks on the surfaces due to poor cleaning after
the
annealing bake. The streaks are easily removed, however, the parts
require
cleaning when received before any further processing.
UFL optics: The design of holders to store cleaned 3" optics until
installation is complete and will be sent for manufacturing Monday.
Core Optics Support -- Michael Smith
------------------------------------
No report.
--------------------------
Isolation Group -- M. Fine
--------------------------
1. Coil Spring Tests:
Hytec is completing the dynamic testing of all coil springs received.
They will be starting some static and fatigue tests immediately after
that.
The fatigue tests will compare damping and stiffness properties before
and
after 1000 cycles of full loading and unloading. Soon they will receive
epoxy-less springs (47 units) and those glued with a new epoxy (15
units)
and start the testing thereof.
2. Fine Actuator:
Hytec received all mechanical components for the first four fine
actuators last week and has completely assembled and checked one
of those, including the PZT drive. Everything is working as
expected. The rest of the PZTs is still expected from PI before the
end of this month.
3. Rack Assembly:
Hytec is wiring up interlock relays this week. Wiring is still
needed to connect pneumatic-related inputs/outputs. The overall
wiring layout is quite tight with all the additional components for
the
multiplexing now incorporated into the design.
4. Coarse Actuator:
Hytec is preparing POs for the remainder of the multiplexing
hardware. This hardware will be capable of operating 4 SEI stations
from a single electronics rack. The POs should be issued by early
next week.
5. Fastener Testing:
Hytec is testing fastener threads with different coatings (silver,
TiN,
Tungsten disulfide, and moly disulfide), and thread tolerances. CIT
will
be getting the test plates from Allied and starting our own testing
next week.
6. Cleaning Qualification at Allied:
Yesterday, Larry J and Mike F were at Allied witnessing the cleaning
of
3 HAM support tubes. Two differnent processes were used: one involved
a
wash tank with the article immersed in the re-circulated detergent
bath
heated to 110 degree F; the other; spray wash in ambient. Both methods
start with lacquer thinner cleaning of blind tapped holes using a wire
brush mounted on an electric drill, followed by lacquer thinner
wash of the interior and exterior of the tube and a alcohol rinse.
At the end of wash FTIR samples were taken for 3 tubes cleaned, and
sent
to Fitzsimmon overnight for analysis. The FTIR reulsts will be used
to
compared with the results obtained from the tube that was cleaned earlier
by Allied and RGA-tested by Matt and Larry.
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Rolf Bork, Paul Govereau, David Shoemaker, Daniel Sigg)
--------------------------------------------------------------------
Worked on the arbitrary waveform generator, made it muti-tasking safe
and added the reflective memory interfacing code.
Physics Environment Monitor (Alex Marin)
-------------------------------------------
Except for the lab moving, there are no
significative work done for the last week. I shipment
of accelerometeres (3 types) and the required hardware
was shipped to Hanford for the 1st SEI/HAM test. Matt and
Alex will be in Hanford next week.
Optical Contamination (Daqun Li)
--------------------------------
The ringdown and mode spacing data have not shown any significant
change for cavity one with teflon over the last six days since being
exposed to moisture for a full day, suggesting that there is no
observable hydrofluoric acid (HF) contamination on cavity mirrors.
Teflon has been qualified for use in LIGO. Vac seal is the next
material for testing with this cavity chamber.
Measured reflectivity of another REO beam splitter test shot (OX 776,
annealed test piece) to be 52.1% +/- 0.6% for p-polarization at 45
degrees with a 1064 nm laser.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
No report.
| CR-980019 | WBS 1.2.1 | Development and Qualification of Core Optics Components (COC) Cleaning Procedures | J. Camp |
| CR-980020 | WBS 1.2.1 | Additional Lasers and Laser Support | J. Camp |
| CR-980023 | WBS 1.1.4 | Hanford Electrical Power | F. Asiri |
| CR-980025
CR-970020 (Revision A) |
WBS 1.1.3 | Beam Tube Enclosure, State Sales Tax Negotiations | F. Asiri |
| CR-980026 | WBS 1.1.4 | Civil Construction, Livingston, Hensel Phelps Closeout | F. Asiri |
| CR-980027 | WBS 1.2.2 | CDS Staffing | S. Whitcomb |
| CR-980028 | WBS 1.2.1 | Seismic Isolation and Suspension Staffing | S. Whitcomb |
| CR-980021 | WBS 1.2.1 | Laser/Optics Staffing | J. Camp |
| CR-980022 | WBS 1.4.1.2 | Project Controls (5N502) Actual Costs and Estimate-to-Complete | P. Lindquist |
| CR-980024 | WBS 1.4.2 | Support Services | P. Lindquist |
Cindy has prepared graphs showing costs vs budgets for the Operations accounts. We will present these to the Project Controls meeting next week.
Also, the Signature Authority list has been updated, signed, copied and distributed.
No report this week.>From: James Rianda <jrianda@ligo.caltech.edu>
Date: Thu, 16 Jul 1998 16:21:55 -0700 (PDT)
From: Albert Lazzarini <lazz@ligo.caltech.edu>
1.4.3 Systems Engineering
1.4.3.1 Systems Engineering & Integration (AL, BB, CC, JK, DC)
__Integration Planning:
Cable Tray Specification
The specification is being corrected for the last time and numbered
for
release. Paul Kabot is making final corrections to the drawings.
The
SOW, cover letter, and DCNs have been written. We must now bind the
various pieces of the document into a single volume, put it into the
DCC, and release the drawings and the document. Bid packages will be
sent out early next week.
__Analyses:
Lazzarini met with Kommeni to identify revisions needed in the Vacuum
Preparation and Cleaning Specification. These revisions reflect wisdonm
gained in the course of beginning in earnest the clenaing and preping
of hardware bound for the sites.
__Reliability: Nothing to report
__Integrated Layout/Drawings:
OPTOMECHANICAL ILD LAYOUTS
Anticipate next release by 7/21/98, which will incorporate
the
new drawing format as well collecting a few minor
changes,
including adding PSL/IOO table & enclosure elevations. This project
could slide a week or so due to other minor projects.
The Mid & End Station xref's are still
on hold waiting for
input from the various groups (IOO, ISC,COS).
CABLE TRAY LAYOUT ILDs
The package of 5 drawings (plan, 4 elevations) has
been
upgraded and Bill Baldwin is in the process of releasing
it as
an "A" revision, today. The Mid & End Stations are being checked
and
should be released as an "A" Revision today or tomorrow, Friday.
The full package of 8 drawings (Vertex 3-D,Vertex
plan, Mid
Station plan, End Station plan, 4 Vertex elevations)
& 15
documents will being released as an "A" revision, early next week.
PSL/IOO OPTICAL TABLE COORDINATE LAYOUTS
Rick Savage and Lee Cardenas set the optical tables
in position
however Peter King & Lee both noted that the
Newport 16'-0"
long x 5'-0" wide is in reality 4'-11 1/16" wide. This makes the
coordinates at least 7/16"+ off when referenced to Global Coordinates,
and more importantly looses a full row of holes. So Peter is
coordinating with Dave Reitze as to what effect this has on optical
layout & what dimensions to put on drawing for archival purposes.
__Mock-ups:
ELEVATED PLATFORM FOR MOCK UPS
Layout of a platform to assist working on the HAM
chamber is
being rescheduled for design & fabrication of
a production
prototype model to be tried in the field instead of building a
mock-up.
ASC LEVER LAYOUT
The lever beam path layouts & Louvre Baffle final
design are be
started sometime in the next week or so. The ASC
Lever paths
will next be shown with the COS elements in the END & MID Stations.
1.4.3.3 Modeling & Data Analysis (KB/HY/AL)
HIRO:
Adlib:
* Implementation of the mode support continues.
* Biplab's jump-and-sum method was implemented in the FP summation
cavity.
* Single mode optics validation continues by a SURF student under
guidance of biplab.
* Completed wrappers for C and Fortran modules of real_function type
modules.
* Wrote documentation for the C++, C, and Fortran interfaces (T980067)
* A simple database and a simple expression parser are under
development to support symbolic specification of the input (like 2*Pi,
in stead of 6.28) and to write a parser module so that a new function
-
so long as not complicated - can be implemented without writing
C++/C/Fortran codes.
* A bug of the code for the dynamic loading was fixed. Now modeler and
variants start up very fast.
* Jacob failed to use Blitz++, but could successfully use sl++ - most
of it - after Ed downloaded. He will compare the two packages when
new
egcs is released. He will use sl++ for now to implement twiddle C++.
Alfi:
* Corrected a bug that caused a core dump when deleting a box.
* Corrected a bug that created a primitive file instead of a box file
when using the "Save As" feature.
Admin:
* Upgraded sadan (Dec Alpha) to RedHat 5.1.
* Tried to build Netscape on sadan, but not successful.
* Downloaded and compiled the latest egcs package for attempting to
compile Blitz++.
* Downloaded the latest Blitz++ and attempted to compile.
* Downloaded and compiled sl++ (a Blitz++ compatable) package.
* Downloaded and compiled DDD 3.0. This is a graphical interface to
gdb.
Data Analysis & Modeling
Blackburn:
The Alpha has been upgraded (after much difficulty) by Ed Maros. The
version 5.1 of Redhat Linux on the alpha is much more similar to the
intel version and code compiles much more consistently between the
intel and alpha now. There are still some minor differences, for
example I am unable to get xdm to work on the alpha. KB has tested
socket code and it behaves consistent with the intel. There are severa
benchmarks to be performed and KB needs to test the MPI on the alpha.
KB began upgrading the laptop to Redhat Linux 5.1. There have been a
host of problems installing that version. It is now installed and a
kernel build has succeeded. However, network connectivity is not
working and the cdrom and floppy devices are not working. This needs
to
be tracked down.
KB also continued work on the Generic API specification.
KB met with Damir Buskuli and Benoit Mours of VIRGO this week to hear
about efforts there to add frame i/o library support to Root. A demo
of
root will take place later today.
KB attended an informal meeting on radiation reaction held by Kip
Thorne's group (organized by Patrick Brady). The ability to study
radiation reaction with instruments like ligo and lisa sound quite
difficult and rest on studying a small mass object orbitting a much
larger mass object.
Dave Farnham:
1) Created a backup of sadan on a cd-r. This required the use
of a
cd-burner at ITS since we were unable to burn the image on the cd
burner attached to sadan. The program does not explicitly support
linux on an alpha, and although it compiled and successfully created
an
ISO 9660 image, it would not burn it on the cd-r.
2) Corrected naming collision in the ObjectSpace package. Naming
collisions between the ObjectSpace Standard Template Library (STL)
and
the compiler STL having been causing great difficulty in compiling
code
which will transport Frame Class Library (FCL) objects across sockets.
After a variety of attempts to circumvent the problem, I discovered
an
undocumented switch which disables the ObjectSpace STL. This
has
removed the naming collisions and the code compiles without a problem
now.
3) In addition, with the ObjectSpace STL disabled, other elements of
the package appear to be working better. In paricular:
a) Reading an object into a reference to an abstract
base class now
works. b) Multiple inheritance is handled
correctly.
4) I have been able to stream some simple FCL frames across socket
connections. I have written a simple client/server program where
the
client sends frames to the server.
In addition....
I have been able to transport all of the classes defined in the Frame
Class Library (FCL) with the exception of the FclDict, FclI and FclO
classes. The last two classes deal with file IO and probably
do not
need to be transported while the FclDict class is questionable.
I have written code which constructs instances of all of the other
objects with random data. This code creates random adc's, history,
detectors, etc creating frames with sizes of approximately 120kb.
The
purpose of this is to fully test the frame transport by creating
complicated objects.
I have also created a sample client/server application where multiple
clients can connect to a server and request individual frames. The
clients immediately send the frame back to the server where it is
compared with the original frame to ensure that the data is sent
correctly. So far, the frames have been sent correctly (Note
that one
of the random frames contains, through a chain of pointers, every
object defined in the FCL except for the three mentioned above).
Phil Erhens:
Phil is away at a week long TCL/TK class. He reported in email that
the
class is excellent and that he is almost an expert TCL/TK programmer
now. He has learned some of the inside path's for TCL/TK over the next
year and it will be interesting to hear these when he returns
Anderson:
The 40m RAID box is not as stable as first thought. I have opened
another bug report for, "SCSI Chip detected an Internal Gross Error".
Progress was made at an ASIS meeting to prioritize periodic source
searches, and consider hierarchical searches.
Majid:
I have improved the documentation for the Fcl. The current web
page is
at:
http://www.ligo.caltech.edu/~wmajid/fcl/index.html
This page will be developed further as I continue to fill in the gaps.
I spent much of this week working with our VIRGO visitors on issues
dealing with Fcl, and Root. We have now compiled Root with g++
on
Solaris. This has now enabled us to interface Fcl, which is also
compiled under g++, easily with Root. We are now able to read
40m
frame data in Root and display the results.
We further discussed the design and implementation issues related to
the interface package between Root and Fcl, which is called VEGA, which
has been initiated by the Virgo team. We also discussed developing
a
class library of algorithms that can be used within VEGA in Root.
We have also made some further modifications to Fcl and have
implemented a directory struture that will help the distribution
process of the code to users.
Tilav (visiting LHO):
I had lengthy discussions with Daniel yesterday about the Global
Diagnostics in general, and the Search Tool part where my interest
is.
I did not realize at all how big project it is by itself (the Search
Tool part, I mean), but it's a fun one. We are hoping to finalize the
NTP server specifications today, and identify a preferred approach.
Lazzarini:
Started to draft a Metadata/reduced data set specification to identify
type of metadata and indexing/cataloging/access methods for retrieving
LIGO data from the archive. In this regard we also brought on a
professional database designer/developer to help identify LIGO
implementation options and develop the schema for the metadatabase
design.
COLLABORATIVE RESEARCH (Mohanty, Mukherjee, Romano)
Mohanty:
I acted as the moderator of the hierarchical search session in the
LSC-ASIS meeting held last Saturday. After that I and Joe worked on
finishing up the GRB paper draft which got over yesterday. Sam,
in our
last group meeting, suggested that I look up the "tau-method" in a
book
by C. Lanczos in connection with obtaining a rational polynomial
approximation to transcendental functions. This may be useful in
converting the transfer functions that I have obtained for some toy
suspension models into digital filters. I am looking into this at
present. I have also extended the report on SEI/SUS module a little
more. The equation given in Gonzalez and Saulson 1994 for a wire with
structural damping has been solved for different boundary conditions
than what I need. So, more work has to be done to obtain the
corresponding Green's function than my initial idea of just lifting
the
transfer function given in the paper.
Mukhevjee:
It turns out that the prediction error correlation matrix no longer
remains diagonal after inclusion of the filter in the state space
equation. So, one now has to take care of the correlations between
the
filter coefficients while calculating "Pk" in the Kalman filter
design. I have modified my program accordingly and running a
fresh set
of simulations to test it.
I am also working on a paper on developing a statistical algorithm for
testing the possible association between astr ophysical events with
only "unidirectional" data.
(J.D. Romano)
1. Teleconference with Sam, Soma, and Soumya on Friday, July 10th.
2. Attended the ASIS meetings on Friday and Saturday (10th-11th).
3. Continued writing a draft of a paper with John Whelan describing
a
model problem for binary inspiral.
4. Modified drafts of a paper (with Soma, Soumya, and Sam) on GRBs as
triggers for gravitational-wave detection.
Sanders
Got in a little time to continue building a Red Hat 5.1 system on zibet. I started to build user accounts with Linuxconf and found that in order to align the UID's and GID's in the local /etc/passwd and /etc/group files with those in our NIS+ database I had to use the older Control Panel or the command line adduser or useradd commands and/or manually edit these files. Aligning these is essential to avoid clashes with NIS+ and the Linuxconf and default Red Hat tools generate sequential UID's above 100 and GID's specific to each UID. I manually created an account that is properly aligned and tested it locally and from our network. Next week I proceed to other services and NIS+ attempts.
1.4.4.2 General Computing (LW/TE)
MIT:
1. The big move has started and should be finished early next week.
The servers were moved over first and setup on Tues. Mail services
were
down for a short period of time but the units all went back on-line
by
tues. evening. The biggest problem was the loss of the password file
under NIS+. Tom E. is getting each user up on a case by case basis
and
having the user put in a new password.
The change of IP addresses and locations also required all of the cred
tables to be re-established and a few of the other NIS+ tables to be
updated.
A few of the machines fell through the cracks on getting new IP
addresses assigned to them by MIT. Tom is working the issue and it
should be resolved in the near future.
2. Because, of the move we were able to look at all of the computers
and do some minor checking on the configurations. Quite a few of them
need memory upgrades and after things settle down Tom will identify
the
machines and order the memory required for them.
Livingston: 1. There hasn't been much change in the computer situation
here. The Sparc 10 web/mail server is still waiting to be assigned
a
domain name and Apache is being installed (with some compilation
problems). The digital camera (Olympus D-600L) should arrive
on Friday
or Monday along with a flash memory card. The wide-angle lens and the
floppy adapter are backordered and will arrive later. All (or nearly
all) of our PC software has been cataloged and is now in the same
cabinet. Installation of new software on the PCs continues.
Hanford:
1. Reprogrammed the 3810 ethernet hub so that GC ISDN has 24 ports,
GC
T1 has 12 ports and CDS has 12 ports. Organized the mess of wires
between the patch panels and hubs.
2. Installed the new 18 GB external disk drive. Will partition
it
later as needed. Moved the CDS 9 GB drive to the CDS server along
with
the EPICS and Vacuum Controls software.
3. The tape robot library is due to arrive on July 24. Will
put in a
PO for backup software and additional tapes.
4. Putting in a PO for renewal of the E3000 server service contract.
5. The new PBX phone system is going in this week. There
will still
be a week or more of testing before we switch over to the new numbers,
however, it is time to start thinking about setting up a modem pool.
CIT:
0. Worked with ESnet/LBNL to get a final cost to LIGO for the LHO T1
link (succeeded). A Work For Others (WFO) order will issued through
Berkley to cover access to T1 at Hanford. Official access may be in
place within ~2 weeks (ALazz guessetimate: note the entire MOU process
has taken in excess of 18 months to consummate...)
1. Hopefully, all of the upgraded PC's in Wilson House are now in
working order. It appears the CD player was the culprit in both
cases.
2. The PC's from Micron have had a high failure rate. Three of the four
ordered have had major failures. The one that did not fail arrived
without any covers. So, from this experience it may be advisable
to
not order from Micron until the quality of the unit improves. There
have been a few people on the project that have purchased units from
Micron and have not had any problems with the units.
3. Working on getting more information on the lost orders. Mike is
tracking them down now. Currently, SUN workstations that have been
ordered for Hanford, Livingston and Caltech have some problem with
them. Presently, SUN claims not to have received some of them and
others are just late on getting shipped.
4. Received the FORE equipment for Millikan and should be installing
it
next week.
5. Some of the SUN equipment has arrived along with the extra disk
ordered some time ago. The disk Bruce A. will be using for his programs
and other colaborators has arrived and will be shipped to him ASAP.
7. Surresh is configuring a new PC to replace one of the Microns.
8. Samantha is working on getting some of the old laptops back into
a
working condition so they may be checked out for those that are
traveling and want to check their e-mail. E-mail and some word
processing will be the only capabilities of the laptops for travel.
9. Barbara K. finished changes to DCC system for Traveler forms.
Deleted several fields and added new tables and subforms. Also
wrote a
master list report that prints all fields for a document. The
DCC can
use it as a paper backup in between full-file backups. Set up
a
reporting menu for the reports. Linda is testing these new features
now.
10. Barbara K. began looking at software packages for tracking
drawings, assemblies, parts, ... using the Drawing Database
Specifications written by Dennis Coyne. A package called Visual
PDM
looks interesting. Also is checking to see if we can develop
the
application ourselves building on the DCC system.
11. Caltech has the network down at Booth and it will not be back on
until 7-20-98. Booth is the central networking hub for Caltech so it
will effect all of our network connections to the outside world and
Lauritsen will be totally cut off.
I took two (2) days vacation and would like to thank Liz and Rita for pitching in while I was gone.
Arranged and processed the paper work for 10 trips. Worked on the ever present backlog of Expense Reports.
Performed miscellaneous duties as requested by various members of the LIGO Project here at Caltech, as well as for members of the staffs of each of the two (2) sites.
Prepared and distributed the Weekly Travel/Vacation Itinerary Report for LIGO Staff and Visitors.
Processed Hourly Payroll, incorporating various recent changes, new hires, terminations and the processing of Vacation/Sick Leave accounting.
Dorothy Lloyd
Completed reconciling March Status Report. Entered AP30 reports into the database.
Continued processing the constantly growing requests for PR's.
Processed POs, Change Orders, Check Request, etc. as well as an extremely heavy load of invoices.
Followed up and tracked many problems with invoice payments.
Continued to monitor and support the temp. Provided clerical support were needed.
Rita Torres
For I. Petrac did PC274163 with Eagan, McAllister Associates, Inc. for technical support, software engineering services.
For E. Jasnow did contract PC273885 with Apollo Sheet Metal for Hanford Water System Integration.
For W. Tyler captured notes from June meetings at LHO on laser safety and other issues. After a few more passes, management will establish procedural or action items. Also updated procedure documents list.
Scheduled video viewing which is part of the LIGO Laser Safety program for people working with lasers here.
Wrapped up organizing supporting material to accompany travel reports. Have since obtained a copy of FileMaker Pro 4.0 to assist in this task; just need time to install and learn it.
Obtained information on the move to 6th floor Millikan to share with those moving.
Elizabeth K. Wood
Discovered that it is possible to get health insurance coverage for international visitors to Caltech thanks for Shirley in TAPIR. The company specializes essentially in travel insurance. Insurance is available in one month increments with two different plans and provides coverage for the visitors and dependents.
At Paul Kabot's request, I called the HP repair people about taking a look at the Design Jet 650C in room 18. The quote was $180.00/hr (1 hour minimum) plus tax and parts, and travel costs of $240.00. Stay tuned.
Did travel arrangements and travel advances for several people in Irene's absence.
Provided new visitor with a new phone that seemed not to be working correctly. It's not the phone, as it turns out, it is probably the line itself.
Talked to the phone office about getting extensions rearranged as people in LIGO are being rearranged themselves. With the preparation of the sixth floor of Millikan as well as the upgrading of Booth and the new APE building on Chester, the waiting time is about three weeks to get extensions changed.
Discovered that Caltech's Personnel Memoranda are on the web while searching for the elusive PM-9 form. That's Caltech's policies and procedures. The web site is (http://acs3.caltech.edu/HR/policies/policies-main.html) should be the most current version of the memoranda.
After talking with Donna Tomlinson and Albert Lazzarini, I discovered
on the LIGO web roster there are a lot of names of unknown people, people
no longer with the project. This will soon be rectified.
=========================================================
LIGO Hanford Observatory (LHO) Operations (F. Raab)
=========================================================
General Items:
--------------
We suffered a major setback when the bid opening for the staging building
revealed that we had an amateurish cost estimate from our architects.
We are
scrambling to recover. At least we appear to have done well on bids
for the
water system re-work and the mechanical-systems maintenance contract.
We will be installing an additional 8 desks and phone lines into the
rear
atrium of the OSB to accomodate the hordes of visitors we expect this
summer.
We submitted a personnel requisition for and electronics specialist
at
Hanford, to share the load with R. McCarthy. We hope to have the new
person
here as CDS equipment arrives.
REU Projects:
-------------
(R. Savage)
RGA ANALYSIS (Betsy Weaver)
I've dropped "Bake Oven Construction" from the title of my report because
I have now started taking data with the RGA. From now on, I will be
spending more time on data acquisition and analysis of the bake oven
rather than its construction. Over the past week, Kyle Ryan and I spent
a good 2-3 days investigating leaks and fixing them. We also learned
more
about the bake oven, and what its procedures will eventually look like,
as
this process went on. The bake oven and all of its components are now
in
their final configuration. There is more electrical work to be done
still,
as well as putting the bake blankets on the system.
Data acquisition is going well so far. I've learned quite a bit about
the
RGA software and have taken a lot of initial data on the pumped down
bake
oven.
The software seems to have many different modes for data acquisition,
all of
which have their benefits and will prove useful. I will begin working
with
my mentor Fred Raab a bit more now.
PSL CHARACTERIZATION (Janet Casperson)
Last week, data was taken on the output power and internal power of
the
laser, as well as on the lab and laser head temperature. However during
that time I was also adjusting other parameters that may have ended
up
affecting my data, for instance on July 8, the laser defaulted to standby
when I turned the current all the way down. This week I decided to
take
another week's worth of data while not disturbing the laser at all,
in
hopes that the data obtained would reflect the laser's stabilizing
time
more accurately.
In the mean time I have been analyzing this and last week's data more
carefully. To aid my understanding of the noise level of each input
channel, I found the root mean square of the data for each hour. When
the
root mean square values for every channel were averaged I got a general
idea of the overall noise of the laser during that hour. It is clear
that
the deviation from the average value is becoming less and less the
longer
the laser is left running - the laser power output seems to be becoming
more
stable. I now have a more quantitative method for determining the
stabilization time, but I don't believe that I have seen a stable output
from the laser yet.
TECHNICAL SLAB CHARACTERIZATION (T. Islam)
No report received (out making measurements in the Y-arm mid station).
ALIGNMENT SENSITIVITY OF ADVANCED INTERFEROMETER CONFIGURATIONS (M. Zwikel)
The present week has involved some more coding in Mathematica to speed
up
the project by automation. As I begin to consider earlier stages in
LIGO's
length lock acquisition, I'll need to run large numbers of simulations
with
related (ie, loopable) parameters. To this end I've created an automatic
simulation module which calculates and stores the signals for all degrees
of freedom and a user-definable spread in misalignment angles. Stored
signals can then be auto-printed at high speeds. After examining and
interpreting these results, I consolidate them into simple Excel sheets.
Stage three analysis has thus proceeded much faster than stage four,
and
should be completed tomorrow.
A number of smaller issues lay on the horizon. Daniel has contacted
Ray
Beausoleil, the author of the linked simulation code, about getting
dynamic
power readouts of the interferometer cavities. Some of our length and
alignment signals are ambiguous without this additional data, and once
we
have power readouts I'll need to re-examine some Stage three and Stage
four
simulations. In another arena, my computer will spend this weekend
doing
some full wavelength runs. The work done to date has centered around
cavity resonance, but signals which could disrupt length or alignment
sensing may exist outside this narrow region and are thus very important
to
consider.
Bake Oven:
----------
(K. Ryan)
As of 7-16-98, we have found and repaired two vacuum weld leaks, one
on
the bell jar and the other on the base plate. After connecting all
of
the vacuum fittings, pumps etc., we had to spend some time "hunting"
down
a virtual leak within the system. This turned out to be due to the
trapped
volumes created by the rotor and stator of the small turbo pump. We
had
pumped the system with the scroll backed large turbo pump but had left
the
small turbo off. This resulted in a poor conductance with the exhaust
side
of this non-running pump being pumped to 10-3 torr while the inlet
side being
in the 10-5 torr range. Once we spun the small turbo, these trapped
volumes
released their gas, the virtual leak was eliminated and the total pressure
went into the 10-9 torr range after 12 hours.
Betsy has the bake oven PC on the network and has begun taking RGA scans.
Now that the vacuum part of the system is acceptable, we will install
the
thermocouples and heating blankets. We expect to begin experimenting
with the
heating of the blankets next week by way of the controller. Once this
is
demonstrated, we will stop lab work for a day or two and write the
procedures
relating to bake oven operation, the ordering/receiving/distribution
of
controlled items and the receiving/handling of clean parts.
I don't know for sure when we can say we are ready to process real parts,
my
guess is the second week of August.
HAM 1st-Article Test:
---------------------
(C. Gray, H. Radkins)
HAM Door Covers are now being used when work is done.
Stacks were assembled. Some issues which came up were tight holes
on one
Leg Element (we are considering tapping the holes to ensure a better
fit). Another issue was damaged thread on a screw (looks repairable,
but
don't want to damage TiN coating). 2 stacks are completed and
the other
two await fixes.
Krytox is being used for TiN/Stainless Steel connections for 1st Article Test.
Purchased various types of taps and related items.
Hoisting of Optics Table/Stacks is being worked on at Larsen Machine
Shop.
Optics & Lasers:
----------------
(D. Cook)
I have located several of the particle counters on or near their final
PEM
determined locations and will be taking data on a regular routine and
generating a histogram showing the frequency vs particulate counts.
I will
try to incorporate the mid and end stations soon as well.
Optics lab overhead cable trays are installed.
We have six general purpose tool boxes, loaded and ready to set in place
in the LVEA and VEAS as soon as they are labelled and keyed alike.
We will run a photo-chemical analysis on our laser safety glasses using
Labview software and a power meter to confirm the manufacturers results
which they showed full attenuation for 10 seconds at 1.0mm beam size
at 12
watts at 1064nm. I will try a sample at .25mm at 12 watts to see if
they
hold up. One filter sample did crack upon cooling down after aproximatey
5
minutes. Modifications to optics lab safety procedures and equipment
is
still under way. Supplies continue to arrive. Cleaned vacuum baked
components are being transferred to Hanford fairly regularly.
Computing Systems:
------------------
(C. Patton)
This week I un-tangled the tangle of wires between the ethernet patch
panel and the ATM 3810 ethernet hubs. The wires are neatly tucked
into
a cable holder and have been organized in the 3810. I updated
the Patch
Panel map spreadsheet and posted the new map on the wall next to the
patch panel.
The 3810 hubs have been reprogrammed so that the General Computing ISDN
network now has 48 ports, the GC T1 network has 12 ports, and CDS has
12
ports. New port maps have been printed and are posted on the
wall next
to the hubs.
A new 18 gigabyte external disk drive has been connected to the GC
server. This replaces a 9 GB drive that had been borrowed from
CDS. GC
now has 8 GB of internal disk storage being used for application
software, 9 GB of external disk storage being used for User accounts,
and the 18 GB of external disk storage for future expansion.
The EPICs
and Vacuum Controls software have been moved to the CDS server.
The tape robot library is expected to be delivered on July 24, next
Friday. A PO is being submitted for renewal of the service contract
for
the E3000 server, and for a Unix site license of Matlab.
Work continues on the GC Design document. I also spent time helping
to
fix several PC problems, reviewed several new products for automating
backups and for automating security, and received for inventory and
storage the Laptop that was purchased as part of the HVAC control system
and reviewed it as a potential GC user laptop. I am also starting
to
put together a list of supplies needed, such as extra cables of all
kinds, extra keyboards, extra mice, etc.
Electrical/Electronics:
-----------------------
(R. McCarthy)
Worked with US West on the installation of the new phone system.
The PBX
is installed and being tested. The testing will run over the
next week at
which time the Hanford Observatory will cut over to the new phone system.
New numbers will be issued for all Observatory personnel. E-mail
to follow.
The rerouting of conduits for the mid- and end-station communications
was
worked on this week. This will allow for network and phone to
be
distributed from the VEA's to various locations in the buildings.
US West
to provide cable splicing and punchdown board for phones in these buildings.
Gave a tour of the site to the Hanford Site Technology Group Management
Committee. Thanks to Fred for giving the "What LIGO is" talk
to the group.
Very positive feedback from attendies.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, K. Stiff and W. Althouse)
Electrical Support Services Contract:
Sun River is currently building the next two DC power supply containers
with transformers on the 2 remaining flatbeds(40'). The electrical
inspector has given approval to the support assembly for the high temp
cable at the beam tube connections. The insulator will be out
this week to
re insulate these connections.
Cryopumps:
Nothing to report.
Beam tube port valves(10" VAT)
The data taken to date was discussed with Fred Raab, Bill Althouse,
Larry
Jones, John Worden, Kerry Stiff and Mark Lubinski on Monday(7/13/98).
A
course of action was developed for the valves. This action
includes the
possibility of having Tom Swain(VAT rep) come on site to adjust the
valves
per our request, Bill Althouse is talking with Tom Swain about this.
A
second 10" valve was sent up from LA and measurements were taken on
this
valve(it was not disassembled). These results will be discussed
with Tom
Swain.
Data Acquisition and Temperature Control System:
The GE software fix was received and installed Monday the 13th. At present,
it seems to have fixed our problem with accessing multiple I/O drop
boxes
on a single data bus. We now have data communications with 16 I/O boxes
(including 1 PowerTRAC box) along the 2280 meter bus, and 4 I/O boxes
on
the 60 meter bus.
A total of 53 thermocouples have been installed so that we are now logging
beam tube temperatures at 9 locations along the length of Y2 module,
and
beam tube enclosure ambient temperatures at 4 locations along the module.
Weather Station:
Weather station has been up and running since 1 July. We can now
correlate
tube temps with our weather data.
For additional information about this report, contact sanders@ligo.caltech.edu