The Project Control Meeting for Monday July 13, 1998 IS CANCELED.
WBS 1.1.1 Vacuum Equipment(Worden)
1. Gate Valves:
Status at GNB:
Two Livingston valves shipped on July 2. Three remain to ship
but should go in the next week or so.
GNB returned to Hanford on July 6 to continue work here.
The first priority is the Y2 valves. Although none have been
officially accepted by LIGO, the Y2 end valve seems to be ready
to go. The Y2 mid valve, however, had it's drive and bearing
assembly replaced with a unit from Hayward (GNB's shop). This
replacement unit also sounds defective. Excessive axial free play
is thought to be the problem and is likely due to incorrect
assembly by GNB. GNB management will take a more serious look
at this to understand what is going on. PSI is expecting
more detailed drawings so that they can also understand the mechanism.
Once this is solved (hopefully by next week) work will resume
on completing the left arm valves. In the meantime GNB will start
the normal rework on other site valves so that the crew is not
standing around waiting for parts.
2. PSI has submitted the RGA data for the Right beam Manifold.
AMU 2 6 x 10(-9) torr
16 7 x 10(-11)
18 1 x 10(-11)
28 4 x 10(-10)
44 8 x 10(-12)
Total pressure is 6.6 x 10(-9) - LIGO criteria is 2 x 10(-8)
They have also performed accumulations this time to improve on
the RGA "air signature" results. "Air equivalent" leak values
based on AMU 14,28,40 range from 3.9 to 5.9 x 10(-9)tl/s.
The vertex section is now cool and the 48 inch valve seperating
it from the beam manifold and 80K pump will now be opened in
preparation for it's RGA runs.
3. Installation activities:(Kyle Ryan)
X-arm end station:
PSI has installed the bake blankets on
the VE.
X-arm mid station:
PSI/GNB have begun disassembling X-2's 44"
BT gate valve in preparation for performing
the "checklist" inspections.
Corner Station:
John Worden accepted the right BT mani-
fold today. PSI will open the 48" gate
valve which joins the right BT manifold vol-
ume and the vertex volume as soon as the
electricity can be hooked up to this valve's
motor. This will allow PSI to collect data
on this combination.
Y-arm mid station:
PSI/GNB are replacing the bearing housing for
the ball screw on Y-2's 44" BT gate valve (for
the second time!). The previous ones were noisy
etc. PSI engineers will review GNB's design for
this component and GNB is inspecting the original.
Y-arm end station:
No change.
Livingston Installation(Allen Sibley)
The main turbo that failed last week an restarted has again failed.
This time we think that the
failure was not due to a power glitch. The pump has been crated and
is being shipped to Edwards
for warranty repair. This leaves no spares in Livingston for the time
being, however a spare pump
is available from PSI.
Vacuum Equipment installation continues on track. Piping and electrical
installation
is nearing completion in the x arm end station. PSI has received two
valves for the corner station
from GNB and is installing them. They are pneumatic actuated valves
and we expect the needed
electrically operated valves next week.
WBS 1.1.2 Beam Tube (Jones)
a. Livingston Installation
Problems continue with preparing
for the X arm acceptance test
accumulations. Last weekend, a power failure shut down the
pump carts and something caused the data acquisition system
for pressure/temperature measurements to fail; this is still
being researched. The RGA at port 5 is being tuned and the
RGA system at port 14 is being baked, should it be needed.
A total of 29 of 32 control supports on the X arm have been
measured by direct GPS; 6 of these have been post processed.
Post processing is running 6-12 days behind measuring, due to
laxity in posting precise ephemeris data (the USGS has recently
taken this over from the USCG). All enclosure holes on the Y
arm have now been cored, and there are 7 sleeves left to install.
All but 3 non-control supports on module Y2 have been aligned
with respect to the control supports, and approximately 50%
of the non-control supports on module Y1 have been rough
aligned. A set of beam tube drawings was sent to John E. Chance
to prepare them for making alignment QC checks, and they have
inspected the beam tube to plan their methods.
One of the four turbo pump
carts has failed to restart after
a power failure last weekend,
and was replaced with a spare
cart that PSI had shipped
in. The failed cart has been
progressively worse in restarting,
and evidenced some vibration
before dropping out. Svoboda
is performing an alignment tuning
procedure with oscilloscope
in a repair attempt. If that doesn't
work, it will be returned
to Edwards. CBI will start moving the
roughing pump carts to the
Y arm this week in prepartation for
pumpdown once completion
of testing on the X arm releases the
power equipment.
> 1.1.3 & 1.1.4 BTE and Civil Construction (Fred Asiri)
>
> >>Issues:
> Hanford:
> 1. Water System Integration: An Invitation to Bid (IFB) was
was send to nine bidders. on June 9, 1998. We received
three responsive bids on due date ( July 7, 1998). Following
is a summary of bids as they were read:
>> Apollo-----------------$102,600
>> Zygotech---------------$114,220
>> Thompson Mech.---------$106,928.37
>> Parsons Estimate-------$100,000
The apparent low bidder, Apollo has been notified about
the
reasult.
2. New Staging and Storage Building. Bids are due on July 14, 1998.
Ed and I travelling to the Hanford site to participate
in
the public bid openning.
> Livingston:
> 1. On July 2, 1998, ED Jasnow, Mel Weingart of Prsons and Bill
Holliday (Parsons CM) met with the Hensel Phelps (General
Contractor) representatives and his Mechanical Subs. We
had
a lengthly discussion about the all the outstanding claims.
At the close of the meeting, we reached a final
settlement
amount for completing all the outstanding issues and closing
the contract. The final settlement amount will be submitted
to
CCB for approval shortly.
Hanford 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
1) The water system modification bids were
received on 7-7-98.
The apparent low bidder
is Apollo. There were two other and
all of them were within
11% of each other.
2) Levernier repaired the RO system. When the
new tank is installed
we should have potable water
on site.
3) Addendum one was sent out to the potential
bidders for the
new building.
Livingston Construction (Gerry Stapfer)
We finally had two very short showers. They showed
that our buildings still have several leaks. HPC has
contacted a company to fix these leaks.
The cooling coil replacement is in progress. The coils for air handlers
#1 and #2 (LVEA) have been completed.
The west end station is completed and the south end station is 50%
completed. Replacement coils for air
handler #3 are on order.
WWC is completing the door installation along the south arm and is
getting ready to pave the service toad
along this arm.
The incoming power to the site has not improved. The average voltage
differential between the three phases is
5% with spikes of up to 50%. On Tuesday the west end station HVAC could
not be reset any longer. We have
purchased a number of large fans to keep the air circulating and provide
relieve for the PSI crew working in
that station.
Date: Fri, 10 Jul 1998 10:43:00 -0700
From: David Shoemaker <dhs@ligo.mit.edu>
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
This week Lee Cardenas has completed a major NSF
milestone "Begin
Interferometer Installation" by beginning the
installation of the Laser and
Input Optics table.
-----------------------------------------------
Implementation Group -- Mark Coles/Fred Raab
-----------------------------------------------
A new laser tube was installed, under waranty, this week. We have
spent the last couple of days realigning optics and getting light
through back through the mode cleaner.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
Writing and packing, writing and packing...
ISC group is working hard to prepare for ASC(WFS) FDR (7/23), LSC FDR
(7/29), and MIT lab move (now thru 7/17).
We have taken delivery of two of the three IO optical tables and leg
sets (unfortunately a couple weeks early...)
On the good side, we have staked out over 1500 square feet of clean
optical lab space in the new building for ISC assembly, and (on paper
at least) it's a pretty efficient layout. Hope is to hit the
ground
running.
One technical advance: in the midst of preparing his final design
documentation Brent Ware discovered a gain scheduling trick (disabling
the L- controller until conditions are ripe) which apparently reduces
the mean time to LSC lock by another factor of two (now a few
seconds).
-------------------------------------------
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 is installing the 2k IFO IOO/PSL optical table and optical
table enclosure.
- The PSL was locked to the reference cavity using the new frequency
shifter layout. It remained locked to the reference cavity for
the
duration of the holiday weekend.
The output of the PSL is being aligned into the analyzer
cavity
with the intention of using the analyzer cavity to mimic the 12-m
modecleaner. Once completed, time domain studies of the PSL will
commence.
- R. Abbott has been debugging the 21.5 MHz electronics, namely the
oscillator and phase shifter, for deployment into the PSL. The
stages
of the reference electronics were tested and their performance was
optimized.
Some parts of the control screen for the oscillator
and phase
shifter have been written.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
Here is the next weekly report. Again send by Guido Mueller.
Sany:
We measured the thermal lensing of the viewport that we used for the
in-vacuum measurement of the thermal lensing in the EOT Faraday rotaotr.
We took out the Faraday rotaotr from the vacuum chamber with the viewpors
untouched. Then evacuated the chamber again and measured the thermal
lensing. The result shows that the thermal lensing in the view port
is
negligibly small in comaprison with that of the Faraday rotator.
Qitze chu
This week we were able to finish the tuning and calibration of the
bullseye sensor heads and started to measure the bullseye signal. The
Q of
the channels are ranging from 8 to 9. We also matched the RF phase
of each
channel to within 1 degree using different lengths of cables.
Finally, we were able to test the sensor using the reflected beam from
the cavity to which the laser is frequency locked. With dithering of
the
second lens position by about 100 micron peak to peak sinusoidally,
we were able to detect an indication of small AC mode mismatching signal.
The amplitude of the bullseye signal is around 70 +/- 30 millivolts
while
the tilting signals are about 3 to 5 times larger. Most of the
noise are
probably alignment noise due to the fact there is no aligment control
system.
We are using a DAQ board and Labview to collect and analyze data.
Nonlinear fitting procedures are used right after the data are taken.
Improvement of this measurement is undergoing.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
Corning has agreed to write a letter memorializing the agreement to
credit
LIGO for re-classification of glass. After completion of polishing
by
CSIRO in March of 98 we will know how many pieces need to be reclassified.
The 4th Beamsplitter arrived from CSIRO, we await one remaining 2ITM
to
have the full complement of spares required for the 2K interferometer.
Veeco is still performing internal testing on the IR interferometer,
we
have been moving out the acceptance test dates on a daily basis.
The air handler for the metrology lab has been delivered and the ducting
is
set up. Utilities are scheduled for connection 7-10-98.
Brian Loucks has delivered the first half of the metrology tooling,
the
interferometer mount. The optic mount is due for delivery 7-15-98.
We
have the specification sheets for connecting the motors and encoders
and
need an electronics design to complete the installation.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
REO Contract - COC coatings: Coating of the beam splitters will take
place
next week. At that time 4 beam splitters should be at REO. REO wants
to coat
all beam splitters at the same time because calibration for the runs
is time
consuming.
Mirror Cleaning: We are in the process of cleaning some mirrors to
measure
total losses. These mirrors have a film on them that prevents the water
from
wetting the mirror surface. After cleaning they will be installed in
cavity
#3 for characterization.
Core Optics Support -- Michael Smith
------------------------------------
ETM TELESCOPE, ISC TELESCOPE:
K. Mailand has begun the design concept for the ETM and ISC telescope
packaging.
BEAM-DUMPS:
A. Badalian has received samples of compliant glass-mounting springs
for
holding the glass within the beam-dumps. M. Smith has refined the analysis
of fringe
wrapping due to the large motion of the beam-dump structure to include
a
three-resonant structure to model the beam-dump supported by horizontal
and
vertical cross beams. This analysis has resulted in a specification
of the
stiffness of the beam-dump mounting structure.
3D MODELING:
Angel is working on 3D models of the six locations where large COS
baffles
are placed, and ISC optical lever beams must pass through small holes
in
the baffles.
COC WEDGE ANGLE TOLERANCE:
D. Rose has almost completed the COC wedge angle tolerance analysis.
He is
working on a coordinate list of all ghost beams in the WA IFO.
TEST EQUIPMENT: 1)IR AUTOCOLLIMATOR
J. Kern has received a sample CCD camera for evaluation.
STEERING MIRROR MOUNT TEST:
J. Kern and M. Smith are still testing short-term repeatability and
long-term
stability of various commercial mirror mount candidates for the PO
steering
mirrors.
--------------------------
Isolation Group -- M. Fine
--------------------------
No report received.
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Rolf Bork, Paul Govereau, David Shoemaker, Daniel Sigg)
--------------------------------------------------------------------
Continued to work on the remote interface to the arbitrary waveform
generator. Looked into the code of the arbitrary waveform generator
itself: to work properly with the new interface it will need a couple
of additional features (such as timing control on the waveform level,
phase-in and -out transitions and a mulit-thread safe interface).
Physics Environment Monitor (Alex Marin)
-------------------------------------------
The accelerometer note sent last week, received few important
feedbacks. In summary it looks like the proposal of using Wilcoxon
accelerometers with Endevco signal conditioners is the best combination
from both performance (on paper at least) and price. The signal conditioners
have gain of 1 or 10x and noise bellow the accelerometer preamp noise.
As
soon
as possible, in the new location we will make a test.
For the first SEI/HAM test Matt and Alex will travel
to Hanford
probably arround July 20.
Optical Contamination (Daqun Li)
--------------------------------
Exposuring moisture to teflon in cavity one for a few minutes before
pumping has not shown any data degradation in either ringdown or
mode spacing measurements, indicating no observable
hydrofluoric acid (HF) contamination on cavity mirrors after this
shorter moisture exposure. Next step is to exposure moisture
to
teflon for a longer period (a full day) before pumping and resume
the above test.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
Input Optics:
=============
The EO shutter Control Board PCB is due today. It will take a couple
of days
to stuff it and assemble the box before we can test it. We have decided
to
produce a couple more of the LSC photodiodes (current design) for initial
testing of the Mode Cleaner. This gives us some schedule relief for
the
modifications and production run. Xing has all of the MC demodulator
prototype pieces working. He will make changes to the circuit design
and we
should be ready for PCB layout soon. Work is being started on the second
board of the MC length servo.
Timing Systems:
================
PCB layout of the GPS clock fanout boards proceeding. Hope to have
these
three board layouts done by end of next week.
PSL
========
1. The transition from the current operating frequency (12.33
MHz) to 21.5
MHz is being made in the frequency servo. A VME based oscillator/phase
shifter/power amplifier board has been built that satisfies all the
life
support needs of a reflection locking system. This will address
the last
known remaining issue of reliability in the frequency servo which was
a
thermal overload of the photodiode by allowing us to use the newly
developed
LIGO photodiodes. This change has the added benefit of reducing
the phase
penalty associated with the RF traps on the front end of the servo
card
allowing higher unity gain frequencies and thus lower phase shift at
100 kHz
when the PSL is used as an actuator.
2. Wiring harnesses are being built for the three PSLs with the
first one
being the one used for the first Hanford PSL installation in August.
3. Documentation is being continually updated for submission to
DCC prior
to release of any hardware.
Suspensions
================================
- Delivered all vacuum flanges with D connectors for IOO systems to
Yehuda
for
vacuum prep.
- Final fabrication and testing of SOS controllers continues.
- Prototype Satellite module tests are complete. Final board mods will
be
done
and modules ordered. We currently have enough operational prototypes
for the
Hanford test stands.
IOO (ASC)
================================
- Optical lever PD board is out for fab. Due back 7/17.
- Alignment servo amp board is out for fab. Due back 7/17.
- ASC alignment whitening board layout has been completed. Fab contract
is
being
placed.
- Prototype demod board has been stuffed. Testing will begin next week.
- WFS PD boards are due back 7/10.
- System drawings will be started next week.
Data Acquisition
=================
- Work progressing on Sun framebuilder and reflected memory.
- Work progressing on Data Collection Units and controller.
- Present schedule is to integrate first system software at Hanford
week of
July
27.
Vacuum Controls
===============
- First rack installed in Livingston end station; PSI in process of
wiring
with
system integration testing of that rack to begin August 17.
- GNB has changed their control wiring for electric gate valves, which
will
require a fair amount of work to modify CDS documentation, wiring and
software.
A meeting is to be held with PSI next Wednesday to discuss this issue,
along
with Regen heater controls.
Networking
===========
- In process of modifying fiber optic specs for Livingston installation.
Statement of Work should be ready for review by Monday. Need to verify
with
PSI
that we are still allowed access to end stations on August 1.
Control Room
=============
- Still waiting for approval to buy on GSA!!
1. Conducted Amaldi Conference Advisory Committee meetings on 7/8 and
7/9 in 114 E. Bridge. Prepared and refined the initial program for
this
conference in accordance with very useful suggestions made by the
committee.
2. Met with Eugenio Coccia, Director of the previous Amaldi Conference,
who gave me helpful advice and suggestions about the organization of
the
Conference. I showed him the Athenaeum Dining Facilities as well as
the
meeting rooms in Baxter Hall. He was impressed by both facilities.
3. Prepared attachments for Hiro Yamamoto's collaboration with TAMA.
4. Discussed arrangements for a long visit under Visitors Program
auspices with Bruce Allen.
| 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-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-980023 | WBS 1.1.4 | Hanford Electrical Power | F. Asiri |
| CR-980024 | WBS 1.4.2 | Support Services | P. Lindquist |
| 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 |
A total of 19 documents were electronically submitted to the DCC. They were reviewed and placed on-line. Also, a total of 40 documents were added to the database. The following figures represent the breakdown by category:
| C | Contractual/Procurement | 13 |
| D | Drawings and CAD | 16 |
| E | Engineering Documentation | 4 |
| G | Graphics/Presentations | 4 |
| L | Letters | 1 |
| M | Management/Policy | 0 |
| P | Publications/Formal Notes | 0 |
| T | Technical Notes, Informal | 2 |
Three custom viewgraph presentations were assembled for lecture use.
A total of 89 packages were received and distributed. An additional 27 packages were sent out. The DCC processed 121 incoming faxes and the project transmitted 106 faxes.
ACTIVITIES
Initial organization of the end item data package from PSI continues. Additionally, twenty-plus operational manuals, received earlier from Parsons, are being organized, numbered and entered into the database. Six or seven boxes of end item data documentation are expected shortly from CB&I. The DCC anticipates considerable effort to organize, number and enter these into the database. Work continues on flow charts designed during the CB&I Completion Review
No report this week [The actual costs have been received from Finance on disks. The hardcopy are expected at the end of the week. -pel]
No report this week.>From: Kristin Duncan <kris@acrux.ligo.caltech.edu>
Albert was out this week.
From pkabot@ligo.caltech.edu Thu Jul 9 11:48 PDT 1998
ELEVATED PLATFORM FOR MOCK UPS
Layout of a platform which attaches to the flange of the HAM chamber,
has
been delayed further till approx 7/23/98 due to other priorities.
ASC LEVER LAYOUT
The lever beam path layouts in spools numbers BE-5 & BE-6, and
BSCs # 3 &
#7 are finished and I understand the Louvre Baffle final design will
be
started sometime this week. The ASC Lever paths will next be shown
with the
COS elements in the END & MID Stations.
WASHINGTON OPTOMECHANICAL ILD'S
The Mid & End Station xref's are still on hold waiting for
input from the
various groups (IOO, ISC,COS).
PSL/IOO XREF LAYOUTS FOR ILD'S
New plan layout for the PSL/IOO Optical Tables & Hams 1,2,7, &
8 (4k & 2k)
are finished. Elevations need some minor adjustments for completion.
This
will be pursued after cable tray layouts are finished next week.
OPTOMECHANICAL ILD LAYOUTS
Anticipate next release by 7/21/98, which will incorporate the new drawing
format as well collecting a few minor changes.
CABLE TRAY LAYOUT ILD'S
The plan view along with the package of 15 documents has been sent out
in
draft form. Mid & End Station plan views are being reviewed for
issue in
draft form. The elevations are in work and hopefully will be finished
by
the end of next week, approx. 7/17/98.
PSL/IOO OPTICAL TABLE COORDINATE LAYOUTS
Drawing was finished and released on 7/2/98. Rick Savage and Lee Cardenas
are now in the process of setting the optical tables in position.
From conley@ligo.caltech.edu Thu Jul 9 11:39 PDT 1998
Continued to work on the Folding Mirror Suspension production drawings.
Updated
recycling mirror production drawings for delivery to machine shop.
Created a release drawing of an in vacuum Ribbon Cable Clamp.
1.4.3.3 Modeling and Data Analysis
Biplab and Romano attened the LISA Conference.
Modeling (EM, BB, HY)
Adlib:
Discovered that shared objects are different on Solaris 2.5 and 2.6.
When Adlib
is compiled for 2.6, the executables do not run properly on a system
with 2.5.
Got the fortran to cleanly compile. It does require a special version
of the f2c
library.
Modifying codes for mode support. The next goal is the inclusion of
modes
without mixing. I.e., include mode and test if they propagate properly,
but they don't mix each other at mirrors. After the full validation
of this
stage, the mode decompostion matrix will be included in the mirror.
But the
mode base change will be included in the current stage.
Guided the SURF student to start using alfi interface to build a simple
interferometer. The student will help the scalar case model validation
by
generating the transfer functions for the michelson (and hopefully
the full
LIGO) configuration.
We had a telephone conference with G. Cella. He will come to Caltech
from July 27
to August 13 to work on the mechanical part modeling. Before he comes,
he will
learn the design of LIGO stack design, and will think how to make a
simulation
program design. This model will include the dynamic formulation done
by Somuya,
who sent Cella a short document summarizing his results. Cella has
an account on
LIGO computer now, the name is gcella.
Jacob has started working to convert twiddle to C++, so that it can
be used for
the fast time domain simulation of in-lock state IFO. For the matrix
manipulation,
he tried to use blitz++ package. Ed has tried to build it on the unix
box with partial
success, because of the innability of the latest version of egcs. Ed
will help
Jacob to use it.
Alfi:
Continued on work to cleanup connections. Now when objects are moved
(instances,
ports, etc), the connections are automatically fixed.
Misc:
Ed did backup of sadan onto CD-ROM in preperation of installing RedHat
Linux 5.1.
Although the current version of Linux for sadan cannot properly read
the disk,
both Solaris 2.6 and Intel RedHat Linux 5.1 had no problems with mounting
and
reading it.
====================================================
Data Analysis (AL, KB, DF, PE, SA, WM, ST, BS )
Kent was out this week.
From dfarnham@ligo.caltech.edu Tue Jul 7 13:57 PDT 1998
I have been developing test code for the ObjectSpace C++ package (purchased
to
provide C++ socket classes and binary streaming abilities across socket
connections). I am still having much difficulty compiling on
the LIGO computers
(frequent name collisions between the ObjectSpace Standard Template
Library and
the system S.T.L.), so I have not been able to send complex classes
across a
socket yet. I am not certain if the problem lies with the configuration
of the
Sirius compilers or if it is inherent to the package. This occurs
whenever I
attempt to use the standard template library.
Other than that, the ObjectSpace socket classes work fine, and there
should not
be a problem using them. The binary stream classes also work.
However I am
having difficulty using the ObjectSpace "Universal Streaming Service"
(this
takes care of sending classes and other complex data types across a
binary
stream). It does not appear to handle pointers to abstract classes
and
polymorphism completely. I don't know if this has to do with
compiler issues or
if it has something to do with the package. We may have to wait
until the next
release of the ObjectSpace package (supposedly ~1 month, the current
gnu
compiler on Sirius is not explicitly supported, the sun v4.1 compiler
is
supported, but it appears to have the same problems). Also, we
may need to
clean-up and reinstall the compilers to ensure that they are not the
problem
(this will occur after the move to the library).
In the meantime, I have begun to modify some code which I wrote last
summer to
use for streaming classes. This is nearly complete.
From pehrens@ligo.caltech.edu Thu Jul 9 10:57 PDT 1998.
* Worked on the local/remote file browser for the LIGO LDAS
interface dummy.
* Studied Tcl/Tk syntax.
* Printed out and began to study the man pages for Tcl/Tk.
* Attempted to rent a notebook computer to take to Palo Alto
for the Tcl/Tk training course.
From sba@aegir.srl.caltech.edu Thu Jul 9 10:59 PDT 1998.
We have successfully established the high speed ATM network topology:
40m - LIGO switch - CACR switch - CACR HPSS system. In addition, initial
tests seem to indicate that the last known serious ATM problem on the
HPSS servers has been solved by upgrading to the latest IBM
device drivers.
We have signed-off on the final acceptance of the LIGO RAID prototype
system which has been running smoothly as the new 40m data acquisition
disk buffer.
From wmajid@ligo.caltech.edu Thu Jul 9 11:18 PDT 1998.
I have been trying to integrate ROOT with Fcl on Solaris. I can
create a
shared library but I am having trouble when linking it to ROOT.
The
problem seems to arise from the fact that the ROOT binaries that were
downloaded for our platform was compiled under Sun's CC compiler, which
doesn't seem to have much support for C++ STL. The Fcl uses STL,
so it
must be compiled under GNU's g++ egcs compiler.
This week the ROOT development team for the first time provided a Makefile
for some platforms, which doesn't yet include Solaris. In collaboration
with VIRGO we have modified a Makefile for the Linux platform to adopt
it
for Solaris. The work is still in progress, but we are getting
near to
compiling our own version of ROOT with GNU's g++ compiler.
I have adopted DOC++ as a documentation tool for publishing Fcl
documentation on the WEB. There now exists a rudimentary set
of
documentation for Fcl at http://www.ligo.caltech.edu/~wmajid/index.html
The most important information here is the Fcl class hierarchy tree
and a
brief description of the various classes. Much more work needs
to be done
to turn this into a useful place to findout more about Fcl. I
have also
added IO functionality to the Serial data class of Fcl.
From tilav@ligo.caltech.edu Thu Jul 9 11:39 PDT 1998.
I met Rolf to discuss the details of how to interface the time conversion
utilities into the 40m DAQ. Debugging the time conversion code for
this
purpose is progressing.
From bruce@aegir.srl.caltech.edu Thu Jul 9 12:04 PDT 1998.
Continuing work on refining the definition of LIGO metadata and
a standard encapsulation in XML.
====================================================
Collaborative Research (Mohanty, Mukherjee, Romano).
From soma@ligo.caltech.edu Thu Jul 9 11:56 PDT 1998.
I am still in the process of working with the FIR filter inclusion in
the
state space. The main problem is to use the optimum number of coefficients
since it's a compromise between efficient narrowbanding on one hand
and
computational cost on the other. In fact matlab runs out of memory
for
numbers > 500. I have also tried using Chebyshev filters but without
any
remarkable improvement. Right now I am running an experiment ... I
have
added a thermal line to the power spectrum of the 40 meter data and
narrowbanded it using the same filter design as used in my state space
model.
There was a small bug in the program which I have corrected. Inclusion
of
FIR design has slowed the process down considerably ... I am yet to
see the
results.
I attended the Data Analysis session of the LISA conference.
From mohanty@ligo.caltech.edu Thu Jul 9 11:51 PDT 1998.
I attended a teleconference with G. Cella of VIRGO on wednesday. I gave
a brief account of the formalism and explained to Cella the computational
help that we may need in implementing the formalism. I have sent a
copy
of the preliminary draft about the SEI/SUS modelling formalism to Cella.
This draft is still not the complete report which I continue to work
on.
As I see it, the next priority is to write down the transfer functions
with
the mirror treated as a rigid body instead of just a point mass. Hiro
suggested that it is more important to include structural damping for
just
one polarization of the wire transverse motion first rather than have
two
polarizations but with viscous damping. The equation of motion for
the wire
with two polarizations, the longitudinal mode *and* structural damping
is
not available to me at present.
The zeroth draft of my paper on GRBs, with Joe and Sam, is ready and
is being
processed by Joe and I. We will shortly check all our equations again
and
make the first draft.
I attended the data analysis session of the LISA meeting. I have been
asked
to moderate the LSC-ASIS session on hierarchical searches. This will
need
some of my time till Saturday.
1.4.4.2 General Computing (LW/SS/BK)
MIT:
1. Next week we will be moving to our new building. As a result of
this, all the MIT computers will be down on Tuesday. Our current
plan is to begin turning off some computers the evening of Monday,
July 13, and turn off the servers early Tuesday morning. The
computers will be off the rest of Tuesday, and will be turned on
again Wednesday morning.
During this period, e-mail to or from us will be unavailable; however,
any e-mail sent to us should remain in the outgoing queue on the sending
machine and be delivered after our computers are up again. If there
are any difficulties, please try resending on Wednesday.
Hanford:
1. Tracking PO's and trying to resolve related issues.
2. Working with the T1 test connection.
Livingston:
1. Fixed various PC problems. Mostly configuration issues and some applications
needing to be upgraded.
2. Installed another 24 Port board in the FORE 3810.
3. Installed the UPS unit for the GC room and discovered some minor
electrical
problems. Allen S. will be getting the issue resolved.
4. Installing new s/w on the Web server but because of the numerous
errors the
OS may need to be reloaded again from scratch.
5. Tracking various purchases.
CIT:
1. Building and checking out multiple laptops. Trying to get some of
the older
units ready for people to travel with. So, far we have found two of
the Toshibas
will not work at all without the docking station and getting them repaired
is
under concideration.
2. Other PC issues have taken a great deal of time and most have been
hardware
problems with a few exceptions. Hardware problems covered loose cables,
bad
mother boards, bad CD drives and bad switches.
3. Tracking multiple purchases. Orders for disk drives and new workstations
that have been purchased some time ago are being checked into along
with the
units that have not arrived at the Observatories.
4. Working on the SDRC Master Series upgrade to version 6. It is the
version
needed to run under Solaris 2.6.
5. Monthly full backups of LIGO systems (gsparc, kater, ligo, sirius
and
acrux:mail) have been completed.
6. Some new users accounts have been created.
From: Barbara Kratochwill <barbarak@ligo.caltech.edu>
Barbara began work on changes to DCC Access database so many part and
serial numbers can be entered for a document.
Barbara looked at converting the WebBase DCC application from WebDocs
(a
copy of the DCC database with special changes for Web searching) to
LiveDocs (the actual DCC database). Decided to leave the WebBase
application as is for the time being.
On the website, Barbara converted the publications and theses pages
to the
new format -- stucco background, multiple fonts, etc. Made minor
formatting changes to the bibliographic entries.
Sanders:
I continued from the attempt 3 weeks ago, reported here, to implement NIS+ client services under Linux. That attempt failed with a segmentation fault during logins. I suspect libc incompatibilities. To continue, I completely rebuilt, from scratch, a new Red Hat 5.1 system on zibet. This is now working. During this installation I have begun a complete Web page log of all of this work. This will be posted as a LIGO bulletin board for use by others.
Red Hat 5.1 has several impressive new capabilities. Most especially, it implements the powerful new Linuxconf tool which provides graphical and remote administration capabilities including some superuser capabilities for non-priviliged users.
The Linuxconf NIS documentation declares that NIS+ will soon be implemented in Linux. Just what we have been seeking! We will continue with the alpha implementation now posted on the web, however, to try to pathfind the configuration of NIS+ and to understand these libc issues.
This work will continue after my trip to Fermilab next week.
For I. Petrac did change order No. 2 to R. Beausoleil, change order No. 3 to General Optics, and first draft for RFQ IP-103 for Cable Tray Fabrication & Installation at HLO.
Scheduled three eye exams and pursued related paperwork.
Spent quite a bit of time learning about, and organizing, supporting material to accompany travel reports. Recreated the report form in Excel for this purpose.
My hat's off to Irene Baldon who has done this by herself in addition
to her other duties, there are a lot of details to capture for each report.
Hope my part helps a little.
Elizabeth K. Wood
Talked to Sprint about tie-lines, or at least phone lines that will facilitate calling between Hanford, Livingston, and Caltech. So far, the bid ($3835 per month) exceeds Caltech's monthly phone bills. Even including Hanford's phone bills (they pay $29.95 per phone with about 50 phones), LIGO's monthly phone bill comes closer to the Sprint bid, but not enough to pursue this venture much further.
Reassigned some travel expense reports to Rita to work on to help ease Irene's never-decreasing load. It seems to have worked out successfully so far.
Dealt with a variety of issues concerning hiring and relocation of LIGO
employees, both undergraduate and regular.
Irene Baldon
Arranged and processed the paper work for 9 trips. Worked on the ever present backlog of Expense Reports and completed a significant amount.
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 Staff Payroll, incorporating various recent changes, new hires, terminations and the processing of Vacation/Sick Leave accounting.
Dorothy Lloyd
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.
Date: Thu, 09 Jul 1998 16:27:44 -0700
From: Fred Raab <raab_f@ligo.caltech.edu>
=========================================================
LIGO Hanford Observatory (LHO) Operations (F. Raab)
=========================================================
General Items:
--------------
This week Lee Cardenas has triggered the major
NSF milestone: "Begin
Interferometer Installation" by beginning the
installation of the Laser
and Input Optics table! See the PSL/IOO
Table report below.
Front Office:
-------------
(J. Berry)
This past week I have had 14 vendors call about the status of their
invoicing. The vendors calling for payment seems to be coming
down now
(finally). Dorothy and I have worked out a system to try to get
things
processed a bit faster, and it seems to be working so far.
LHO has created 19 new PO's, closed 62, and Federal Express'd 101 invoices
to Dorothy for Payment this past week.
PSL/IOO Optical Table and Enclosure Installation
------------------------------------------------
(R. Savage)
L. Cardenas from Caltech is up to position the PSL/IOO optical tables.
H.
Radkins and C. Gray surveyed the table locations and market the LVEA
floor
according to a recently-released drawing (D980260-A) generated by P.
Kabot.
The enclosures arrived by moving van on Tuesday, as scheduled (a very
well
executed delivery - on time and in mint condition - by 3-Way Corp.
(800)454-9997 x8619 Linda). L. Cardenas and D. Cook and R. Savage
are
positioning the tables and enclosures and expect to have them all in
place
the the end of the week. R. McCarthy is investigating running
power to the
enclosures.
REU Projects:
-------------
(R. Savage)
A dinner for the four REU students and their mentors has been arranged
for
next Wednesday at 5:30 at the Red Robin Restaurant in Kennewick.
RGA ANALYSIS (Betsy Weaver)
This week dealt Kyle Ryan and I had a bit of misfortune, as we found
rather
disturbing leaks in the weld seams of our bake oven. We spent
a good
portion of last Thursday identifying the exact location of these leaks
via
the Helium leak Detector. Kyle then decided to have a local welder
(from
Apollo Inc.) repair the leaks rather than send the whole project back
to
the manufacturer due to time and money concerns. Once the leak,
in one of
the ports in the belljar, was rewelded, we reflanged everything and
found
that it no longer leaked in that seam. Now it leaked in one of
the port
welds on the baseplate. We continued some more investigation
of this
leak and had this seam also rewelded by Apollo. We are currently
reflanging the system to verify that there are no more leaks.
This must be
done in order to progress with adding the rest of the components to
the
system which have already been leak tested individually. Hopefully
this
next phase of construction won't take too long - but, then again, the
last
phase wasn't supposed to take long either! We have already configured
the
layout of the remaining components and have flanged together many of
them
into sections, so we don't expect any complications in this phase.
We are
also taking mental notes for the procedure that will be written pertaining
to the flanging of the belljar to the baseplate. We recently
found that,
when following a torque sequence for this flange, the flange "relaxed"
back
down to a lower torque after some time. There will have to be
a retorquing
of the flange maybe written into this procedure. We are also continuing
our
work on the electrical system for the bake oven. Sun River is
currently
assisting us with this. Larsen Mfg. made some shields for the
variacs,
power supply, and a controller inside the panel.
Starting this week I have been (and will continue to do so) taking some
time to load the RGA software onto the bake oven computer and investigate
the program's usage and libraries. In the SURF-intern world here
at LIGO,
we (students) have been discussing with Rick Savage some activities
to
partake in, such as mentor-student dinners and maybe a visit to Caltech,
which are in the schedule for the rest of the interns down at Caltech.
PSL CHARACTERIZATION (Janet Casperson)
This week I have been taking and sorting through mass quantities of
data.
I now have two data acquisition boards installed in the LabVIEW computer
out in the lab and configured for the channels that we want to monitor.
This makes it possible to acquire data from many different channels
at
once. The laser has been running since Monday, and the data obtained
from
this run have proven to be very interesting. The data obtained
from the
diode monitors within the laser are particularly interesting.
These diode
monitors were specified by LIGO, and the effectiveness has not been
fully
explored yet. The data taken from this run shows some behavior
by the pump
diodes which seems to be quite unusual: some diodes seem to be
taking much
longer to stabilize, constantly varying their power output, while others
seem to be steadily decreasing their power output. I am unsure
of the
reasons for this and am currently exploring this question further.
TECHNICAL SLAB CHARACTERIZATION (T. Islam)
Here is what I accomplished for the week of 7/1/98 to 7/8/98. I've written
up and made several preliminary reports on how to make accelerometer
measurements. I have found out that the reason why different orientations
of the accelerometer block for horizontal acceleration measurements
result
in different acceleration spectra is (as Dr. Savage told me) because
when
the accelerometer block is perpendicular to the ground, the accelerometer
raises the block slightly. Furthermore, acoustic isolation in the
environments I have tested seem largely ineffective in altering the
acceleration spectra. I have made measurements of the acceleration
damping
of HVAC room motions due to the air slab, as well as distance
attenuations of the transformer. I found that the air gap damps HVAC
vibrations by a factor of 5 (see report). Furthermore, the transformer
cannot be used as a source of sound to test vibration attenuations
of a
forced cylindrical foundation. There are too many other sound sources
which emit 120 Hz, 240 Hz, and 360 Hz vibrations; furthermore, the
transformer is elevated rather than being attached to the ground like
a
cylindrical foundation.
ALIGNMENT SENSITIVITY OF ADVANCED INTERFEROMETER
CONFIGURATIONS (M. Zwikel)
One word: results. Well, a few more before that. The first
two days of
this week were spent in simulation of mirror break angles. We
consider a
misaligned IFO with a length locked recycling cavity and FPI arm, and
then
scan the ETM of the other arm at a number of speeds. All possible
misalignments were broken up into five "u-angles," which are linear
combinations of physical angles, a more convenient basis for discussions
of
signal sensitivity. Analysis of the length error signals show
that
critical degradation occurs at about 2*10^-7 rad (+1*10^-7 rad), which
is
slightly greater than expected (ie, good news). Some finer details
of this
problem will be examined before moving on to the wavefront sensors
later in
the week.
Bake Oven:
----------
(K. Ryan)
See Betsy Weaver's report, above.
HAM 1st-Article Test:
---------------------
(C. Gray, H. Radkins)
The two Bellows have been installed. They were torqued down with
the
method employed at the 40 m lab.
Parts for the stack assembly have been cleaned and prepared for installation.
A HAM Leg Screw was switched with a BSC Leg Screw. We have received
the
missing screw.
The level of the Crossbeam pads (connect to top of dummy weldments)
and
Support Table were checked optically; both systems were level, however,
two
Support Tube ends were contacting the B-Blocks whereas the other side
had
roughly 4 mm of gap.
Stan Whitcomb arrived (7/8) to offer assistance.
Washers for Safety pins and Optics Centering Pins arrived.
Hoist Bar and Alignment Brackets have been taken to machine shop to
ensure
a better fit. The Forklift Boom was also taken to the shop to
get threaded
holes drilled into it for support to the forklift.
2nd Rail System has been partially removed.
Optics & Lasers:
----------------
(D. Cook)
I have been assisting Lee Cardenas with installing the PSL optic tables
and
enclosures. Locating and leveling them can get rather time consuming
with
having to rig the cranes etc. We have a meeting set up with a local
clean
room garment supplier on 7-20 at 1:00 PM to discuss different options
and
pricing to service the site. I welcome any comments to this matter.
Laser safety issues are still on going. A question was raised as to
whether
our laser safety eye wear also protected personnel from the 808-809
nm
wavelength produced by the diodes that pump the LIGO 10 watt laser.
The
answer is yes. We have an optical density of 4.04 at 808nm; 5.0 at
980nm;
and 6.5 at 1064nm. All have the proper attenuation at these wavelengths,
at their maximum power output (w/cm2). Also I'm having our laser safety
eye
wear supplier and the Schott filter glass service engineer test our
eye wear
filter to determine the rate at which our lenses fail when exposed
to a
direct beam. (photon bleaching). I believe the exposure time would
have to
be several seconds in duration. Much, much longer than I would care
to leave
my face exposed.
Lab equipment,tools, etc. continue to arrive.
Computing Systems:
------------------
(C. Patton)
The new 24 port ethernet hub on the GC ATM network is being programmed
to assign ports for the two subnets (T1 and ISDN). Another PC
is being
moved to the T1 line. We are down to only two ISDN IP addresses
again
and more computers needing network connections are being set-up in
the
labs and offices. The T1 line has been very reliable and much faster
than ISDN, but is still temporary.
Work continues on the GC Conceptual Design document. A good deal
of
time this week has been spent tracking past orders, getting quotes
and
information for new orders, and trying to get Sun to correct their
error
in sending us someone else's computers.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, K. Stiff and W. Althouse)
Electrical Support Services Contract:
Report for Sun River
Accomplishments:
Performed acceptance testing of D/C Power Supplies PS-1 and PS-2.
Testing
of PS-2 went as scheduled. Testing of PS-1 had some problems
in that the
power supply cooling hoses had been installed backwards. After
determining
the hose error, all work and testing proceeded as scheduled.
[FJR comment: In late-breaking news, the electrical
inspector has blessed
the installation of the power cabling and clamping
to the beam tube.]
Problems/Concerns:
Problems concerning hoses noted above.
(Mski note: as reported in the weekly report both
power supplies tests were
successful.)
Sun River is currently building the next two DC power supply containers
with transformers on the 2 remaining flatbeds(40'). They also
tested the
cooling water systems on these two power supplies and there is no blockage
or crossed hoses.
Cryopumps:
Three of the 10" VAT valves located at ports Y2-4, 2-6, 2-7 failed to
close
when operated after installation of the cryopumps as previously reported.
Bill Althouse, Tom Swain (VAT representative)and Mark Lubinski met
Tuesday(7/7/98) to inspect and adjust valves as required. The
spare valve
from LA was inspected and measurements taken. We then proceeded
out to
Y2-4 for inspection and disassembly. Measurements were taken
and the valve
was adjusted several times until we agreed that the valve would seal
when
shut. The valve was reassembled with new a gasket and "O" ring,
"H"
hardware installed and then pumped down. The valve sealed and
did not leak
by as noted before.
Bill Althouse, Fred Raab, John Worden, Larry Jones, Kerry Stiff, and
Mark
Lubinski met to discuss the results of the inspections and decide a
course
of action for the rest of the 10" valves. The group decided that
further
testing is required, and to get further clarification from Tom Swain
(VAT
rep).
[WEA comment: we hypothesize that the nominal
VAT adjustment practices
produce valves with marginal sealing when vacuum
tested in the "hard"
direction (atmospheric pressure trying to open
the valve). The worry of
course is that the sealing might also be marginal
in the favorable
direction. The planned testing is to try to determine
if this is case and
if there is a more reliable adjustment regime.]
Data Acquisition and Temperature Control System:
Continuous data logging of Y-2 beam tube and beam tube enclosure
temperatures was performed from 7/2/98 through 7/6/98. This was achieved
by
operating only one I/O drop box on each of the two available data buses.
Currently, the GE software will only allow reliable, reproducible operation
in this manner. Numerous communications have taken place with GE and
their
representatives to assure that a software fix they plan to release
on
7/10/98 will do the job for us. We continue work on the integration
of the
I/O Boxes with the bakeout software, and installation of thermocouples.
[MSki note: We are pushing that testing of the
"fix" is on a full setup
like we will have and if they can not do this
that our site is available
for the test.]
For additional information about this report, contact sanders@ligo.caltech.edu