The Project Control Meeting
Agenda for Monday June 15, 1998 will be:
(Meeting time: 10:30 am Pacific Time)
WBS 1.1.1 Vacuum Equipment(Worden)
1. Gate Valves:
GNB will be back at the site on Monday 6/15.They
are working
on Livingston valves in Hayward this week.
a. WGV11 (Y-end) Has been reinstalled
and cycle tested). This valve received a new bellows(no
leak-
failed visual) but has otherwise tested ok.
b. WGV12 (Y-mid BT) The replacement gate is being
packaged and
readied for shipment as of 6/10.
c. WGV14 (X-mid) Work has started. Bellows damage
(no leak-
failed visual). Gate not inspected yet.
d. WGV17 (Y-end BT) Cycle testing revealed noise
so will
be opened again for adjustments. This valve was
inadvertently
opened against the lockout pin and may have suffered
some
misalignment as a result. Otherwise waiting for
O-ring
decision.
e. WGV19 (X-end BT valve) Cycle testing revealed
noise so will
be opened again for adjustments.
f. WGV20 (X-End station valve) Waiting for new gate.
2. The Y-arm acceptance test review meeting will
be held
in Westborough on June 18. The vacuum and vibration
performance
results will be presented as well as other items
such as
liquid nitrogen consumption and purge/vent results.
The valve acceptance will be addressed later (of
course).
3. Installation activities:(Kyle Ryan)
X-arm end station:
No change.
X-arm mid station:
No change.
Corner Station:
The bake out of the diagonal section will
be completed tonight.
Y-arm mid station:
No change.
Y-arm end station:
No change.
Livingston Installation (Allen Sibley)
CBI has completed valve installation on the Y arm and both valves
are in the closed and locked position. Both valves operated in a
satisfactory manner, and no problems were encountered in operating
them. The valves were in the cammed over position when the flange
covers were opened, and after 6 months of O-ring compression there
was no evidence of Viton sticking to the valve seat.
The X arm end station turbo pump has failed, and Edwards has advised
that it will have to be returned for repair. PSI has shipped on of
the turbo carts that they had in Westborough to Livingston. It can
be
installed early next week. CBI will perform this work.
PSI has installed 2 BSC's 2 HAMs and 1 80K pump in the LVEA. These
vessels have been aligned by PSI and checked by LIGO. Activities in
the end stations consist of piping and electrical installation. The
A/C system problems have not affected this installation.
1.1.2 Beam Tube (L. Jones)
a. Tube section installation status
(Livingston site):
(running totals):
Inside Leak Leak
Final
Welded
Repairs Tested Failures Aligned
as of 6/2*: 400
22 400 0
0
as of 6/9*: 404
23 404 0
0
* Includes gate valves as the
finish "tube sections"'
Installation will be complete
when weld, leak test,
and alignment all reach 404.
We've reached a significant milestone,
with the completion of
field welds and leak checks at
Livingston. One additional inside
repair of a girth seam was required;
zero leaks have been
confirmed
with a project total of 800 tube section leak checks
at the fab
shops and 808 field girth seam leak checks! This is
a commendable
performance of CBI's welding quality and pre-test
visual inspections.
The field installation crews have
started demobilizing, which
includes setting the field equipment
up for viewing at an auction.
The covering of the Y arm with
concrete enclosure covers should
be complete this week.
CBI's work remaining includes
alignment and module leak tests.
Coring the enclosure covers on
the X arm has resumed.
CBI continues to work on the X
arm mid station valve leakage
measurements, and is baking an
RGA setup on the X1 module to
facilitate making independent
module accumulations. The turbo
pump at the end station has failed
(possibly a bearing crash
following a power outage: the
batteries used for a soft
landing of the magnetically levitated
spindle are rated for
only 3 soft landings) and will
be replaced with a spare cart
to be received from PSI on 6/11-6/12.
Power outages continue
to be a problem at Livingston,
and DEMCO is considering the
installation of a substation close
to the site.
We have made an offer on some
of CBI's equipment, and have
received acceptance on a BDF,
helium leak detector, 25KW generator,
and two spare expansion joints.
Negotiations are continuing on
alignment fixtures, support adjustment
tools and the QT pumping
system (including an RGA).
BDF air flow performance since
6/2:
Particulates (0.5u)/cu ft: 18
(max., any day)
Dew Point, degrees F: 9-20
Temperature, degrees F: 62-65
b. Planned meetings:
7/1/98: Completion Review, Livingston site (performed
early due to manpower availability)
1.1.3 & 1.1.4 BTE and Civil Construction (Fred Asiri): no report;
at
Hanford
Hanford Construction (otto Matherny)
Levernier
>
> The Levernier Infrastructure contract
is nearing completion. There
> are 17 items that remain to be satisfied,
all of which are relatively
> minor. For this work we are still holding
over $700,000.00 in
> retainage.
>
> Siebe completed the connection between
the FMCS and the Ether net.
>
> The Beam Tube Enclosure erection contract
is complete.
>
>
> OTHER ITEMS
>
> 1) The rodent control program for the Beam
Tube enclosure that we
started
> last week is on going with
good results.
>
> 2) There is a pre bid meeting for the water
supply modification contract
> on June 11th.
>
> 3) The work on the Mechanical Maintenance,
and the new Support Building
> contract is on going.
>
> 4) Since the Mechanical Maintenance contract
is not in place we issued
> a Maintenance Task Order
to Apollo to perform the critical
preventative
> maintenance work.
Livingston Construction (Gerry Stapfer): not available, due to vacation
Date: Thu, 11 Jun 1998 15:00:13 -0700
From: stan@ligo.caltech.edu (Stan Whitcomb)
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
-----------------------------------------------
Implementation Group -- Mark Coles/Fred Raab
-----------------------------------------------
40m (Jennifer Logan)
--------------------
We continue to make progress with the wavefront sensors on the Power
Recycled Michelson configuration (controling pitch and yaw of the
beamsplitter and recycling mirror). Thanks to the efforts of
Keith and
Walid we closed these loops using the digital controllers for the first
time this week. WFS greatly improves the performance of the PRM
but
there remain some obvious slight instabilites which are most likely
due
to inadequate gain; none of the suspension controllers at the 40m were
designed to take ASC inputs. We are now exercising the data acquistion
system as a way of determining what the residual motions are due to.
Work in the lab has been hampered in the past couple of weeks by
network problems and in particular the suspension controllers have
been
crashing once or twice a day of late. This is compounded by the
fact
that our software back-up tool (BURT) is failing to make back-ups of
the latest configurations; the cause of this problem is unknown at
present.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
ASC Initial Alignment (K.Mason)
==============================
Dimensioned drawings of grout plate locations in the corner station
has been completed. The order for the grout plates has been received
by Carlin Machine with delivery expected by July 15th.
Misc ISC
========
o We received the Marconi signal generator that is to be used as
the RF modulation/demodulation source. Haisheng has measured
the phase noise at for a carrier frequency of ~25 MHz. As
expected, it meets our requirements; this model (with temp
controlled xtal) shows a bit lower phase noise than the demo
model (no temp control) that we based our selection on. Next
is to measure the amplitude noise, then stabilize it using
some new diode detectors we've received.
o Newport Inc has pushed back the release date of their new
autocollimator by roughly 3 months (from now); this is the only
commercial autocollimator we've found that is suitable for the
initial alignment tasks. If this new product can't be delivered
in time for us, there is a modification of their current
autocollimator that would give us the sensitivity we need.
o Photodetectors: Dale shipped 7 detector modules to MIT for
testing. For each detector, Peter C has been measuring the
RF & DC response and temperature vs photocurrent. The objective
is to see how similar the units are if no special tuning is
done.
Lock Acquisition (B Ware)
=========================
No stunning progress. The current L- controller that I have does
have
a threshold velocity of 3 \lambda/s (exactly 3, hmmm), a factor of
three higher than I achieved before, and almost ten times as much as
I
started with. Lock acquisition seems to be sensitively dependent
on
initial conditions, and I've found one where, although the length DOFs
are driven to zero, as they should be, the RM is driven into
oscillation. I haven't decided yet if this is actually a problem,
because the ground noise may dither the ICs enough that any such state
is transitory.
I also found that my differential equation solving skills are a bit
rusty, and it is not true that it takes minutes to drive up the first
test mass mode resonance, but rather seconds or milliseconds (goes
like Q(1 - e^(-t/tau)), so the acquisition controller must also have
-122 dB of gain at 9.4 kHz. My current controller is not stable
with
the addition of the detection mode notch and AAF filters, because its'
bandwith is high enough that the phase induced by these TFs kicks in
near unity gain. So I have to adjust it somewhat, which led to...
I experimented with a simpler controller, suggested by Nergis, which
is very similar in gain and bandwidth to my most successful
controller, but has fewer and less spread-out poles and zeros (which
may be a problem for implementing digitally), but which fails to
acquire lock. I would like to understand this, but I also think
that
modifying the current, more complex controller will result in a
controller that locks and is stable.
ISC design/testing (Fritschel/Mavalvala)
========================================
LSC Detection Mode Controls:
1) The cause of the unexpectedly large contrast defect from FFT results
(reported here last week) has been identified. It is due to rotation
of
mirror coating maps by 90 degrees. The coating map used has a six-fold
symmetry, so rotation by 90 degrees on some mirrors and not others
can
lead to the increased contrast defect. In subsequent HR coating maps
this
six-fold symmetry is not present and we expect the contrast defect
to be
smaller.
2) The vertical 'bounce' mode was added to the common-mode controls
model. A few bugs remain to be fixed but the model outputs are mostly
OK. Signal conditioning design (anti-aliasing/prewhitening,digital
filtering, dewhitening) for the common-mode controls is underway.
3) Work continues on documenting the controls design for the
LSC final design doc.
PNI Digital Loop Test (Daw/Fritschel)
=====================================
o More success with locking the PNI with the digital controller - the
technique we have been using is to leave the analog Michelson
controller connected to acquire lock; when it locks we sum the digital
control signal to the mirror, then disconnect the analog controller
(the RF photodetector signal is split into two channels - one for the
digital path and one for the analog). Locking with the digital
controller only is still difficult, perhaps because the banddwidth
is
lower. Once the Michelson is under digital control, we are also
able
to switch the controller from a 'acquisition mode' to a 'run mode'
--
this involves switching in the analog post-DAC dewhitening filter,
and
simultaneously changing the digital filter function. Next tasks are
to implement the digital test point injection & read-out, and of
course to look at the phase sensitivity!
-------------------------------------------
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)
--------------------------------------------
10 W Laser Contract -- Jordan Camp
------------------------------------
A kickoff meeting for the service/production contract has been set for
June 30.
Prestabilized Laser -- Peter King
--------------------------------------------
- The current shunt actuator was transferred from the Alpha-1 laser
to
the D-2 (the second deliverable) laser. It was observed that
the
intensity stabilization servo, using the current shunt actuator, also
suppressed intensity noise on the D-2. However in an unrelated
mishap,
a malfunction occurred with a commercial power supply within the laser
power supply. The power supply did not supply sufficient voltage
to
power the power amplifier pump diodes. The integrity of the D-2
laser
was checked with the Alpha-1 power supply and it was confirmed that
no
damage had been done to the laser.
- S. Gomes (Lightwave Electronics) and R. Abbott discussed details of
the laser power supply design with respect to the current shunt
actuator. S. Gomes confirmed that the current shunt actuator
should
be okay and that Lightwave Electronics had known of existing problems
with the power supplies. S. Gomes then proceeded to detail a
troubleshooting procedure for the power supply.
In the process of starting the troubleshooting procedures, the laser
power supply started functioning again for no apparent reason.
The
laser has been run continuously for a period of 48 hours and no
repetition of the fault has been observed.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
David Tanner spend three days at Caltech using the HAM mockup to get
an
impression of the work required for the IOO installation. It was a
useful exercise. From a standard-height stepladder, a person can reach
and position a SOS or auxiliary mount in the center of the HAM table.
Some sort of railing at the proper height to lean against will be
needed at the site. The grid of tapped holes on the base can
be used
to set the position with sub-mm accuracy, and we now are planning
fixtures that take advantage of this grid.
Procurement:
Vendors have received orders and some of the vendor-supplied parts
(irises and beam blocks from Thorlabs, some lenses from CVI, and EG&G
photodiodes have arrived.
Mode Matching Measurements:
The calibration of the head baords and the Demodlation boards of the
bullseye detectors are close to complete. The I-Q phase differences
are adjusted to 90 degree with errors less than 0.5 degrees. The RF
phase differences between channels are adjusted to be less than 1
degree.
High power testing:
Prepared for the thermal lensing test of Faraday in a vacuum. Started
assembling a vacuum chamber and resetup the optical arrangement for
this test. Measured the YAG beam radius at various locations.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
The IR interferometer, Air conditioning unit and the Environmental
enclosure are due to be installed in the Metrology lab the week of
29
June.
Our contractors have really extended themselves in order to meet our
deadlines. The schedule risk lies in getting utilities installed
in
the lab to support these.
CSIRO has shipped 2 ITMs and will ship 2 BS Friday the 12th. The
BS
carriers have been successfully modified, so the remainder of the
shipment (2 ITM and 2 BS) will go out by June 18th.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
REO Contract - COC's coating: Received 2 coated FM's. Also received
2
coated beam splitter samples to be characterized. Four RM's have been
coated and are undergoing baking.
Cleaning procedures: Made one cleaning test on a part that had magnet
assemblies epoxied, the bond failed at the glass surface during the
cleaning procedure as they were soaked in an Alconox solution at 100
degrees F. Vac-Seal epoxy literature states the epoxy resists
150
degrees C bakeout. New magnet assemblies are going to be epoxied
to a
similar piece of glass to repeat the test and, at the same time, we
are
going to explore the possibility of bonding the magnet assemblies to
the coated optic with indium. Indium seals do not outgas under vacuum.
#SEW: Q tests will be performed
as well to verify that the
#internal modes are not degraded.
Phil Willems was planning
#on resurecting the Q test
apparatus anyway, and has agree to
#help out.
Core Optics Support -- Michael Smith
------------------------------------
PO TELESCOPE MOCK-UP:
The CIT shop is making three wooden mock-ups of the reflective PO
telescope. K. Mailand will complete the design for the aluminum
supports and gimbal mounts and they will be given to the shop on
6/11/98.
BEAM-DUMPS:
A. Badalian has completed the design and mounting of the 4K ITMxHR3
and
ITMxHR4 beam dumps in BSC8. There is no conflict with the FMy optical
lever beam. A potential interference with the FMy lever beam passing
through the optical port in BSC8 is being checked.
ASAP OPTICAL MODELING:
D. Rose is working with BRO to resolve plot conversion difficulties
to
AUTO CAD. He is checking the latest version of the 2K IOO ASAP model
before incorporation into the overall ASAP model.
ETM PO BEAM:
D. Rose is in the process of designing a pupil relay to image the pupil
of the ETM mirror onto the ISC 2mm quadrant photodetector outside the
vacuum enclosure.
COS PARTS PROCUREMENT:
M. Smith is developing a specification outline for procuring off-the
shelf components such as mirror mounts, Faraday isolator, etc. A
preliminary Faraday rotator spec has been completed, and communications
with several potential Faraday rotator vendors are being conducted
to
finalize a compatible specification.
MIRROR MOUNT TESTING:
M. Smith and J. Kern have set up a test facility to measure the
stability and long-term drift of commercial mirror mounts.
--------------------------
Isolation Group -- M. Fine
--------------------------
Seismic Design (Mike Fine)
--------------------------------------
1. Coil Spring Cleaning:
Astropak has completed the cleaning of 80 coil springs. The initial
inspection has revealed that the epoxy smeared on the PhBr tubing
during fabrication is difficult to remove. Although Astropak has
institued an additional step to remove epoxy prior to acid cleaning
(dip into a vapor degreaser tank for a few seconds then scrub and rinse
down with npropyl bromide), the results still leave a lot to be
desired--blotches of epoxy film still seem to be stuck on the tube.
Also the discoloration of the finish appearance of the tube suggests
that the acid etching is not uniform (possibly due to the uneven epoxy
coating). We are contacting the epoxy supplier for a better epoxy
remover.
2. Coarse Actuator:
Hytec has place orders for parts to test a portion of the planned
multiplexing system. In this test the CAS Software will switch between
two different pairs of IDC motors. This test will evaluate the control
system's ability to command switching from the CAS Software and decode
the software generated control signals. Software checks and
functionality are being added as needed to continue progressing towards
a complete system (8 axes) evaluation later this month.
3. SEI Hardware Production:
We have given authorization to Senior Flexonics and Pegasus to procure
materials requiring long lead time in preparation for full production.
Suspension -- (Janeen Hazel/Mark Barton/Mike Fine)
-------------------------------------------------------------------
1. LOS Fabrication:
We received 245 of the required 252 sensor/acutator heads from
Progressive last week. Janeen inspected a number of them and sent them
off to American Thin Film for molybdenum coating.
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Rolf Bork, Paul Govereau, Mark Pratt, David Shoemaker, Daniel Sigg)
--------------------------------------------------------------------
No report received.
Physics Environment Monitor (Alex Marin)
-------------------------------------------
All the PEM DAQ system was shipped to Hanford for the incomming SEI/HAM
tests. The second (Livingston) DAQ system and the PC should be
delivered to Hanford next week.
The accelerometer issue was discussed with ROlf Bork. We founded a
good
solution for both ground loops and financial aspects.
Details on the schedule of the PEM team participation to the SEI 1st
article tests were discussed. The first item will be done next week
in
Hanford by installing at least the first PEM DAQ cart. In the middle
of
July, we will install the accelerometers, cables, shakers and the
corresponding interface plates, and we will participate at the tests.
Optical Contamination (Daqun Li)
--------------------------------
Measured reflectivity of four REO beam splitter test shots with an
improved setup in terms of angular resolution (+/- 0.5 degree) in
laser beam incidence on the beam splitter, because it was found that
the reflectivity of the beam splitters is extremely sensitive to
angle of incidence (~ 1% per degree). Following are the reflectivity
data measured for p-polarization at 45 drgrees (+/- 0.5 degree) with
a 1064 nm laser. Sample 1 (REO run # OX736), R=52.4% +/- 0.6%;
Sample 2 (REO run # OX736), R=52.8% +/- 0.6%; Sample 3 (REO run # OX755),
R=51.3% +/- 0.6%; Sample 4 (REO run # OX756), R=52.0% +/- 0.6%.
The
reflectivity information is crucial to REO because they need the
data to extrapolate a coating run to shoot for 50% in reflectivity.
Continue to take ringdown and mode spacing data on teflon with no
obvious change found in the data; cavity two containing viton seals
has been pumped with an ion pump solely for two days and the vacuum
is
going up very slowly because of the huge outgasing from the enormous
amounts of viton seals in the cavity. We plan not to lock the
cavity
until the vacuum reaches ~ 10^-5 torr.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
Suspensions
===========
- LOS controller boards have arrived; in process of programming stamps
and beginning tests
Input Optics:
==============
1) EO Shutter Control: PCB layout is near completion.
2) Mode Cleaner Length Servo: Xing Fei and Dale are debugging the RF
prototype in the lab. Some minor design changes are taking place as
we
learn how to use these RF devices.
Timing Systems (Dale Ouimette):
===============
1) The Brandywine order has been modified to use two slightly different
types of GPS Master module. One will be the standard GPS master with
GPS time readout and GPS time sent across IRIG-B to the slaves. The
other will have the modified 2^22 Hz clock and no IRIG-B output. This
change has the following advantages:
1. It completely separates the time stamp problem from the binary clock
problem making both much easier to solve.
2. It does NOT change any of the agreed upon specifications.
3. It has little impact on the total cost because the additional Masters
are replacing existing slaves.
4. It has no impact on the delivery schedule other than to make the
binary clock design a little easier.
Hanford
==========
- Cable trays installed below control room/mass storage room.
- CDS server upgraded to Solaris 2.6 3/98. Control room Ultra 60
still has net boot problem.
- Waiting for 110b return to continue anti-aliasing card tests.
- DAQ Reflective memory and DAQS Controler design docs
ready for circulation.
- ATM video installed into right end station. System being tested.
- Testing Vacuum Watchdog boards and GPS IRIG-B repeaters.
- Constructing optics racks.
Data Acquisition
=================
- Finishing up software for new 40m system, which includes reflected
memory to Sun. Slow data channels from EPICS are now in the system.
System will be moved to 40m late next week.
- Waterfall plotting capabilities being added to data viewer software.
| 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 |
Continued analysis of Mike Zucker's ISC schedule in Project. Determining the most efficient method of transferring the Project information into Open Plan on a monthly basis. Layouts between the two schedules are being aligned, code fields developed and transferred, and an organizational structure for the schedule in project is being created to effectively distribute the activities in the Project schedule between existing workpackages contained in both Cobra and Open Plan.
Updates for the Facilities schedule and earned value have been received and input in part. Schedules received to date are in the process of being updated.
[Remember that we will be doing a cost/schedule review on Monday, June 29 -pel]
LIGO QA also visited KTI to discuss their experience working with springs without epoxy "filling". They indicated that so far, these springs had actually been easier to machine (face off and counterbore) and to EB weld. LIGO QA visually looked at two different machined "ends" and saw no evidence of tearing/damage to the spring internal elements.
LIGO QA visited Allied Engineering (with L. Jones), to observe and better
understand their cleaning processes for the in-vacuum LIGO hardware. Some
changes to the processes were suggested and implemented real time for
"evaluation"- the results were "positive" (should be incorporated).
(L. Jones is preparing a trip report with the details.)
LIGO QA (R. Vincent) contnued his QA support to the GNB gate valve activity. This effort has included both work at the Hanford site and at GNB in Hayward. He also obtained a "typical baked" GNB O-ring and information for R. Weiss.
LIGO QA continued working with R. Torres, Mike Zydowicz, Elizabeth Wood
and Gary Sanders to complete preparations for the Hanford Operational Procedure
Review.
1.4.3 Systems Engineering
1.4.3.1 Systems Engineering & Integration (AL, BB, CC, JK, DC)
__Integration Planning:
Cable Tray Specification
Baldwin will finish the first draft of the Cable Tray Specification
by
tomorrow, June 12 and put it out for review. Kabot is revising LIGO
drawings with sketched-in cable tray routes in order to get acceptible
quality graphics for the document.
AL revised an reissued a draft Materials Vacuum Preparation and
qualification document. It is being reviewed for signature and eventual
placement under configuration control.
__Analyses: AL is working with Barbara Kratochiwill to incorporate an
ACCESS database for tracking vacuum outgassing loads for detector
components.
__Reliability: Awaiting comments from various detector groups on
maintainence plan material; received comments on DAQ Maintenance
Plan,
which will be incorporated.
__Integrated Layout/Drawings:
ASC LEVER LAYOUT
The lever beam path layout in BSC 8 appears to clear
the Ghost
Beam Dumps. The path layouts in spools numbers
BE-5 & BE-6,
and BSCs # 3 & #7 have been delayed till the status of the Louvre
Baffles is determined. No date of completion is projected.
WASHINGTON OPTOMECHANICAL ILDs
The Mid & End Station xrefs are still on
temporary hold
waiting for input from the various groups (IOO,
ISC,COS).
PSL/IOO XREF LAYOUTS FOR ILDs
New plan & elevation layouts for the PSL/IOO
Optical Tables &
Hams 1,2,7, & 8 (4k & 2k), after a shaky
start appear to be
close to acceptable. David Reitze & company are looking over the
final
placement in the ILDs.
OPTOMECHANICAL ILD LAYOUTS
No change in status, other than some minor adjustments
in a few
XREFs.
__Mock-ups:
ELEVATED PLATFORM FOR MOCK UPS
Have started laying out a platform based on a back
attachment
to the 84" diameter nozzle flange. This approach
should allow
application and removal of the dust covers with minimal
interference.Coyne suggested that a wooden mockup may be required to
prove the point.
1.4.3.3 Modeling & Data Analysis (KB/HY/AL)
Hiro:
Mode implementation
First step of the implementation, replacing scalar field class by a
template class, is done. The new result is idential to the old and
there is no appreciable speed penalty. Explicit instanciations of a
few
new template classes were needed to gain the original speed, probably
because this enables better optimizations than implicit
instanciations. Next step is to implement modes, using identity
matrix
for the mode decomposition matrix.
Manuals
Core documents and a tutorial document are extended and updated.
Alfi
Ed helped Biplab to run alfi. On the first day, it was very unstable,
but became stable after second day.
Dynamic loading of modules
Adlib has the capability to add new functions. But, for now, one has
to
relink to create a new executable. Ed is working to support a dynamic
loading of new modules. When completed, one can add new capabilities
without relinking the entire executable, but needs to create a shared
object in a search path. Ed has completed the basic implementation
and
looking into the speed issue (looks no problem), resolving function
naming and the debugging support.
Ray Beausoleil
There was a meeting, Lazzarini, Stan, Sigg and Hiro, about what to do
with Ray's code. It was concluded that, (1) no more code development
will be done (after possible mirror bug fixes needed), (2) no servo
will be placed around his program and (3) the future focus will be
physics using his program. Daniel will write a mini proposal for the
physics problems to be attacked, and the extention of the contract
with
Ray will be discussed again after that.
Blackburn:
KB worked with Stuart Anderson this week on configuration of the new
multi-host raid mass storage system at the 40 meter lab. There were
lots of problems. The raid system requires that the host cpus have
differential scsi for the host connections. It was thought that it
accepted single ended and differential but the single ended is for
drive connectivity and the differential is required for host
connectivity. S.A. borrowed a differential scsi card for the Ultra
30
and an adaptor was used to connect the Alpha. The raid controller
software was clumsy and often non intuitive to use (Stuart can say
more
about this than me). Using the Alpha we were not able to build or read
a filesystem on the raid system. The reasons for this were not
determined. KB re-built the Alpha kernal to support reading UFS
filesystems on the raid which was built using the Ultra; something
that
should work but didn't, as the Alpha was not able to interpret the
partition table geometry correctly. The technical support rep was not
very helpful in debugging problems that came up and in my mind there
is
still a lot to be done with the raid system. One area that is of
particular concern is how to sync a read only mounting host to know
about newly created files from a read/write host on a different host
channel. The unit also delivered less I/O performance than is quoted
by
the manufacturer's webpage.
KB ordered the official version of REDHAT Linux 5.1 for the Alpha. The
delivery date for the new OS is June 15. It is hoped that this will
go
a long way toward fixing the many buggy aspects of Linux on the Alpha
that are not seen on the Intel platforms. KB also contacted ObjectSpace
again this week about getting thier C++ Component Class Library which
supports sockets and network communications. The new release of the
software is June 30th and will support Solaris 2.6 and Linux. At
present KB is waiting to hear from the sale rep about a possible free
upgrade if we buy now.
KB continued the programming staff search this week. We have now made
an offer to Phil Ehrens. He will be starting on Monday and will come
on
board to fill the TCL/TK implementation slot in our software design.
The search for a database expert continues. We will also be seeing
a
new hire from several months ago starting next week (David Farnham,
former SURF).
KB contacted L.A. Sales, Inc. to determine the current OS version and
deliver times for the pentium and alpha cluster boxes from Alta Tech.
Dave Bailey of L.A. Sales informed KB that the boxes are already
running Linux Redhat version 5.1 and that deliver times are 4 to 6
weeks at this time. The pricing for the units is still ~$15K for 8
cpu
alphas or pentiums with 128MB ram and 6GB HDs with all the networking
and power/housing in one box.
Majid (visiting Annecy this week):
We have been working pretty hard on Fcl. Our goal was to be able
to
read and write frames with adc data - as well as write frames with
Fcl
and read back with FrameLib (Benoit's C version) and vice versa.
We
are almost there now. The missing piece is to add read functions
for
RawData, AdcData and Vect classes. I am working on this now.
We have agreed on a coding style, that I think is very nice. We
have
adopted Doc++, for now, as our online documentation tool - I got in
touch with Hiro to get some input on their experience. We made
some
improvement in the code - much more needs to be done, however.
Decided
on how to breakup the code in physical pieces and who will be
responsible for which piece.
One design change in the class hierarchy. We decided to make FclData
(base of time series classes) a subclass of FclBasic. This basically
removes the multiple inheritance in the tree structure.
We have had extended discussions on Root and how to best interface
Frames with it. I have found Root to be extremely powerful and
handy.
Yesterday, we all went to CERN for a meeting with Rone Brun - he is
the
principle author of Root, Paw, Paw++ - sort of a legend - and discussed
with him - for almost 3 hours - Root's status, support, reliability,
signal processing tools, its interpreter, future plans etc. I
am
really impressed by what it can do. Ofcourse for us the missing
piece
is some basic signal processing tools. Damir Buskulic, who works
in
Benoit's group, is taking on the task of interfacing Frames with Root
and will add some signal processing tools to Root. I would like
to get
involved in this effort and I hope to get my SURF student interested
enough in this to provide a first cut for a Root based GW analysis
tool. I would like to be able to show a demo of Root with some
simple
Frame capability when I get back.
Anderson:
The Cybernetics RAID box performed well initially yesterday but failed
some of important tests later on, so we are continuing to work on it.
Initial installation and configuration of 40m RAID prototype system.
We have gotten the Sun host to talk to the RAID box, but have not yet
figured out how to configure the DEC Linux box (this is a Linux
issue). The system is not yet ready for prototype testing as
there are
a number of issues/problems I have opened with Cybernetics.
Interested persons please see:
http://www.srl.caltech.edu/personnel/sba/raid
Sears(SRL):
1. continuing work on second stage of LDAS manager prototype.
will
be completed today.
2. research, design and discussions on meta-data database and use
for description of data to users as a guide to data
selection
for analysis. includes research into XML for
data description
language.
COLLABORATIVE RESEARCH (LS Finn, Mohanty, Mukherjee, Romano)
Sam is out of town.
1.4.4.2 General Computing (LW/TE)
Sanders:
During the past week I continued to build a test Linux implementation
for LIGO.
1. I researched the information on the web re installing NIS+ client
services. I have a relatively complete set of documentation on NIS+
with Red Hat 5.0 and sample configuration files.
2. I dowloaded all of the needed binary .rpm packages.
3. I have concluded that autofs is the automount daemon to use and I
have obtained the package from Red Hat.
4. I also downloaded the needed .rpm binaries for the KDE
implementation of Common Desktop Environment and the underlying Qt
widget support files. This is far less important than implementing
NIS+
as NIS+ is essential for central system administration, but the KDE
environment may be a user friendly desktop.
5. I completed installation of Applixware. We have this suite operating
on the Solaris network and it has already been found to be competitive
with Microsoft Office and FrameMaker. A warning for Linux implementation
in LIGO. Build a big enough /usr partition. Applix takes 250 to 480
Mbytes.
MIT:
1. Still preparing for the move to the new facility.
Livingston:
1. Received the Ultra 10 and currently working on the setup for the
unit to act as a mail server.
2. Multiple orders are in process for more workstations and software.
Hanford:
1. A group is going through the on-line Solaris Sys. Admin. course that
was purchased.
2. The T1 line has been tested for reliability and speed. Dave B. and
Christine P. have found it to be significantly faster than the ISDN
connection. We are still working on some of the logistics to get the
T1
connection mainlined with the rest of the network.
3. Working through the Mathematica licensing issues.
4. Dave B. has been running continuous
test software over the T1
line since last Friday. The results show an average packet loss
between LHO and Caltech at 3% and between LHO and MIT at 0.3%.
The
bandwidth between LHO and Caltech is approximately 800 kbps.
CIT:
1. Barbara K. finished another iteration of the outgassing
application. Added functions and report columns for Absorption
Increase and Absorption+Scatter Increase.
2. For the web site: (Barbara K.) - Redesigned the internal home page.
Added links to the Data, Integration, and Thermal Noise bulletin
boards. Made minor updates to the Computer Service Request Form.
-
Added CACR to the MOU page. Copied signed VIRGO MOU's to web
site. -
Made minor change to newsletter.
3. We have hired a student to work with the GC group, Samantha Bench.
She will be starting June 22nd.
4. We have added the SURF students accounts. Most of the accounts are
set to expire Sept. 30th. Any extensions to the accounts will be
addressed at that time.
5. We have moved a few more people from the old network and server to
Sirius. We are to the point where most of the people left to move are
from MIT. There are still a few CIT people left along with some of
the
application groups.
6. A major push is on for ordering equipment to accommodate the move
to
Millikan and additional users at the Observatories. Hardware purchases
in process include workstations, tape backup units, network boards
to
add more ports for the 3810's, and other misc. equipment.
7. Matlab licenses are about to expire and we are getting the
information needed to get the licenses renewed and upgrade the pkgs.
8. Moved multiple computers and upgraded a couple of the SUN boxes to
Solaris 2.6.
9. Resolved a PC printing problem. We found the configuration file on
Sirius quit working correctly. We rebuilt the file from scratch and
that appears to have resolved the problem of PC's not being able to
print to specific printers.
10. Stuart A. installed the new Ultra 30 in the 40M and has the raid
system connected. We discovered the raid system is using differential
SCSI, meaning we will have to buy another SCSI board for the Ultra
30
and Alpha units.
11. We performed some more network cabling and cleaning up of existing
cables.
12. Looking into getting the PC's upgraded through HPC. If it is cost
effective we will upgrade 3-5 of the P90's. We are having a unit
upgraded this week to test things out.
13.AL spent a lot of time working with Caltech networking group
[ITS/CITNET2000]; he now appreciates what David Shoemaker must have
gone through recently at MIT... We have come to agreement on the type
of support will receive. They will share dark fibres with LIGO wherever
possible and will let us keep our identity with respect to private
LIGO-owned subnets. In addition, they will let us have access to the
networking closet they are setting up in Millikan so we can directly
access the network infrastructure ourselves. I also learned that the
Calren2 (partly state-funded) initiative is moving ahead at expected
speed. When this is up (gradually going from zero to full
implementation over the next year or so) Caltech will have
full-bandwidth access to the vBNS ATM cloud (even support non TCP/IP
communcations) and ALSO the ESnet here on campus. At that time, the
SDSC crossover will no longer be required. Caltech also willhave 1
gigbit ethernet available through the campus by Christmas: at
that
time we may revisit how we integrate into the Caltech infrastructure
to
take advantage of this enhanced bandwidth capacity.
Date: Thu, 11 Jun 1998 15:30:50 -0700
From: Elizabeth Wood <ewood@ligo.caltech.edu>
Elizabeth K. Wood
Continued making catering arrangements for the Hanford Safety Meeting.
Also
I am bringing together all the documents that will go in the Committee's
handbooks. Contacted Linda Turner to provide documents that reside
in the
DCC and talked to Otto Matherny and others about getting thier
contributions to me by Thursday afternoon.
Met with Larry W., Linda T., and Ed C. about the Incoming
Employee/Termination Checklist. We discussed the creation of a LIGO
Personnel Handbook/Orientation Package since there seems to be a lot
of
information in the DCC none of us know anything about. I have begun
a draft
version of an orientation package for new LIGO employees and visitors.
Dealt with the on-going space problem. We are getting a better idea
about
who is going where over in Millikan, but in the meantime, I am putting
contractors and visitors wherever there is spare space.
Met independently with Dot, Gary, Phil, and Matt the temp concerning
Dot's
ever-increasing workload. Depending on Matt's school schedule, he may
be
able to continue helping Dot out.
Took a crash course in preparing payroll sheets during Irene's absence.
Irene Baldon
Since I did not turn in a report last week due to my absence, this report
covers the subject two (2) week period.
Arranged and processed the paper work for 28 trips. Worked on the ever
present backlog of Expense Reports and completed a significant amount
of
reports.
Continued working with Ken Libbrecht on arranging travel for a number
of
Undergrads (15) participating in the LIGO/REU/SURF 1998 Summer Program
here
at Caltech and LIGO/Hanford, WA.
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 (with Liz's help -- thank you), incorporating
various recent changes, new hires and the processing of Vacation/Sick
Leave
accounting.
Rita Torres
Prepared front end material for IFB EJ-298 for Hanford Staging Building.
Once this IFB package is ready, LHO is in charge of distributing to
bidders. Have requested a copy for the DCC and our files.
For I. Petrac did edits to change order No. 25 to MIT, change order
No. 3
to Brookfield Machine, change order No. 7 to Hytec.
For S. Whitcomb filled in forms to renew the agreement with Moscow State
University. Recreated forms in FrameMaker for future renewals. FedExed
forms with accompanying letter.
For B. Tyler, LHO and CIT LIGO management did edits to various safety
procedures after review. Current documents need to be reviewed by 6/11
deadline.
For P. Lindquist did updates to Advanced R&D Proposal. Distributed
Draft
end of April monthly progress report.
Stole a few minutes to organize Laser Safety files in my office that
originally resided in Phil's office.
Distributed: Material to CIT Science Group, MIT CO #25.
Dorothy Lloyd
No report.
Date: Thu, 11 Jun 1998 17:11:23 -0700
From: Fred Raab <raab_f@ligo.caltech.edu>
=========================================================
LIGO Hanford Observatory (LHO) Operations (F. Raab)
=========================================================
General Items:
--------------
This past week we have been hustling to get documents ready for the
Operations Procedures Safety Review. An important document related
to this
is LIGO-M980139-W, which hopefully will be electronically available
from
the DCC by the time you read this report. This document provides information
for visitors working at LHO, including our system of technical liaison,
work
permits, emergency plans, controlled areas, restricted equipment, etc.
The
good news is that the document is 1 page long. The bad news is it references
several other documents that you need to read. Visitors coming to work
at
Hanford will be asked to read and agree to the procedures outlined
and
referenced in this document. The document will be posted on the LHO
Hanford
website (eventually) so you will be able to peruse it and sign up in
advance
of your first working visit. The intent is to get visitors and resident
staff
sync'ed so we all can make the most out of visiting personpower.
We had a farewell lunch for Karl Drobny on 6/10/98. Karl was Parsons'
man on
the site making sure contractors towed the line and performed for LIGO.
He
was a diligent taskmaster, always firm but fair with contractors, and
a
delightful fellow for us to work with. He is moving on to manage a
facility
being constructed in Saudi Arabia. He will be missed.
Daniel Sigg attended the TASI-98 meeting and presented some talks on
LIGO.
We now have an assembled HAM support structure on site and detector
electronics integration of suspension racks has begun in our electronics
shop!
Front Office:
-------------
We are struggling with administrative processes. To help figure out
how to
manage the load we are starting to track activity. Typical front office
action every week:
Invoices processed 80-90
Boxes received 50-60
Purchase Requisitons (new) ~30
Petty cash actions 30-40
Vendor calls on late payments 20 this week
Property control actions Required on all equipment
items
This large load is taxing our front office and loading up systems at
Caltech
also. Gary is trying to iron out these difficulties at Caltech and
we are
looking for ways to streamline business at this end. The hectic pace
here will
likely ratchet up significantly within the next few months as interferometer
installation begins and the "gotcha's" come out.
Hot items:
Our control-room furnishings continue to be held hostage to some GSA
paperwork
that needs to be broken loose. We have assurances from Federales but
not the
paperwork. I will personally buy a beer for anyone who can break this
loose
next week.
We continue to be exposed by not having a maintenance subcontract for
HVAC
systems in place. To mitigate this we have asked Apollo to come out
and do
some preventive maintenance on our fans. Our compressor fan belts are
also
beyond their replacement periods and have been breaking slowly.
REU Projects:
-------------
(R. Savage)
T. Islam and M. Zwikel will begin work at Hanford on June 15th.
RGA ANALYSIS (Betsy Weaver)
This week I continued assisting Kyle Ryan with the Bake Oven construction.
This included procuring materials and building the electronics panel.
In
order to mount the electrical enclosure that we recently received,
we welded
together a Unistrut rack. I had a lesson in welding and actually
got to
weld part of the rack myself. We will finish mounting the Unistrut
and
enclosure to the wall today and begin constructing the inside electrical
panel. I am also currently continuing my investigation of outgassing
by
reading O'Hanlon and Outgassing Documents from 1988-1992 by Rainer
Weiss.
PSL CHARACTERIZATION (Janet Casperson)
This week I have been working with the HeNe alignment laser. So
far I
have used a BeamScan analyzer to measure the beam's spot size at the
waist,
and using this value and the waist's position I have calculated the
beam
spot size as it leaves the laser. Next I plan on applying the
data
obtained from further experimentation to a single lens mode matching
program in Matlab to confirm its accuracy. In addition LabVIEW
was
delivered this week, and I have installed the program and data acquisition
board. I have also begun to wade through its instruction manuals
so that I
can better understand that program's capabilities and how it can be
helpful
in the testing of the 10W laser.
Bake Oven:
----------
(K. Ryan)
We received the repaired base plate from KJLC this week and there is
no
visual indication that it had ever been damaged. Betsy and I
witnessed
the load test of the belljar hoist and the "drop" test of its secondary
safety mechanism last Friday. We found that the overall length
in one
dimension was too great and had Larsen Machine make the necessary
correction. We will pick up the finished bell jar hoist and base
plate
stand from Larsen Machine tomorrow (6-12-98). HTD Heat Trace
informed me
this week that the bell jar "dome" blanket was manufactured without
provision for the hoist bracket (aka lift eye). They had to send
it back
to England for corrective action.
Consistent with last week's status report, we expect to have the hoist,
stand and control panel positioned in room 169 by the end of 6-12-98.
The
anchoring of the base plate stand to the floor won't happen until Monday
and we still need to mount the various parts (variacs, controllers,
etc)
inside of the control panel.
************************************************************************
**As per our procedures (see "info for visitors",
referenced above) Kyle
is also working with Richard McCarthy and Otto
Matherny to ensure that
oven system will meet proper electrical and laboratory
safety practices.
This is required of all custom set-ups at LHO.
--FJR ******************
************************************************************************
HAM 1st-Article Test:
---------------------
(C. Gray, H. Radkins)
Insertion of Support Tubes into the Mock Up went well. Mock Up
was at
least 1.5" high; it has been modified to offer vertical adjustability.
A work around for decoupling the Rail System from the Crossbeams was
developed, and is being fabricated (should be done by 6/17).
Fred Asiri (CIT) and Bill Miller Jr. (Hytec) arrived this week to offer
assistance on the 1st Article Test.
84" O-Ring and Door Cover are being worked on this week (should be done
by
6/17).
Received 16 V-Block Assembly pairs and the Support Table.
Will perform fit test on linking of Support Table, Support Tube and
Crossbeams on Mock Up.
Optics & Lasers:
----------------
(D. Cook)
I have been going over our Optics Lab procurements with Jonathan Kern
from
the Livingston site. This will hopefully save a lot of time not
duplicating efforts chasing done venders, etc. It will help to standardize
the equipment in both facilities. Clean Station equipment orders have
been
written and reviewed by Fred Raab. Hopefully they will be passed onto
the
appropriate people for their input, so we can get everything on order.
I'm
currently finalizing the Laser Safety presentation for the "Operational
Procedures Review, which will be at LHO on 6/23. We have three "Standard
Operational Procedures" ready to be submitted for approval for lasers
now
setup in the Optics Lab. The Standard Operating Procedure for the LVEA
is
just getting started. I would welcome comments, suggestions and ideas
regarding this matter. We need to keep the procedures practical to
work
with, but safe for all. Optical and clean room supplies continue to
arrive.
We are starting to see more components and supplies arriving from different
groups as well.
Computing Systems:
------------------
(C. Patton)
The Mathematica license transfer and upgrade software were shipped on
6/10. Software license inventory and filing is continuing, as
is the
Solaris Sys Admin. training. Progress is being made on the LHO
General
Computing Network Conceptual Design document re-work and update.
Dave
Barker has been running continuous test software over the T1 line since
last Friday. The results show an average packet loss between
LHO and
Caltech at 3% and between LHO and MIT at 0.3%. The bandwidth
between
LHO and Caltech is approximately 800 kbps.
*********************************************************************
**These packet-loss rates are 1-2 orders of magnitude
better than we
experienced using the ISDN connection -- FJR
**********************
*********************************************************************
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, K. Stiff and W. Althouse)
Electrical Support Services Contract (input from Sun River):
Accomplishments:
A large effort was conducted this week on the assembly of the transformers
and DC power supplies. Equipment was installed on two 40' flatbed
trailers. A preliminary inspection by the electrical inspector found
very
few findings that need to be corrected. Four (4) each of the
beam tube
connections and cabling were completed this week.
Problems/Concerns:
No major problems or concerns this period. Some corrections identified
by
the electrical inspector. Corrective actions are in progress
or awaiting
clarification.
(ML note: The A1, A2 and A3 panels were
be inspected 6/9/98, the UL
Inspector Approved them for the UL rating and
this has been documented.
PUD should begin installation of 13.8 KV power
to the transformers.)
Cryopumps:
Pump installation has begun this week.
Data Acquisition and Temperature Control System:
Installed a memory upgrade to 128Mbyte on the Main Bakeout Computer.
This
will allow faster operation of the system. Software development
continues
with alarm, data logging, state vector, and power supply control.
The
state vector will contain these critical parameters, valve status,
tube
temperature, RGA status, Cryopump status, and DC power supply status
in an
encapsulated format. The information will be logged once a minute for
the
duration of the bakeout.
For additional information about this report, contact sanders@ligo.caltech.edu