The Project Control Meeting is canceled for the July 5, 12, 19 dates due to the holiday, Amaldi meeting, and LSC meeting.
There will be no weekly report on Thursday July 8 due to the short week.
First BSC seismic installation completed at LLO!
Progress, successes, problems in the LHO 2K mode cleaner
Summer is here and the Tri-Cities area is becoming "the" summer vacation
place to be. This puts a lot of stress on hotel
rooms. In some cases, Irene has had to
book people in rooms much closer to Oregon than LIGO! This stress on
hotels will continue to get worse throughout July, culminating at the end
of the month when
we have unlimited hydroplane racing on the Columbia River. Hotel access
will start to loosen up more and more as August proceeds. Please factor
this into your
travel plans and BOOK AS EARLY AS POSSIBLE
for trips from now until mid August.
Bake Oven:
----------
(K. Ryan)
LHO Vacuum Bake Oven A load #40 consisting of numerous individual pieces of optical beam dump hardware was released this week.
Load #41 also consisting of beam dump hardware is to be released later today.
Load #42 consisting of three 10" optics is to begin vacuum baking this evening.
Fabrication of LHO Vacuum Bake Oven B has hit a snag in that it's flange
faces (which were welded here on site) are not flat. I will do a
leak check to verify but
the measured flatness suggests that they will be "leakers".
PreStabilized Laser:
--------------------
(Rick Savage)
H. Yamamoto and I have been working on the Wa-2k PSL model using the
end-to-end simulation package. With assistance from P. King and R.
Abbott, we have
completed the frequency stabilization and pre-modecleaner length servo
models. Preliminary tests show good comparison with measured closed
loop transfer
functions and Simulink model predictions. We have found several
interesting things along the way. The model for the intensity stabilization
servo was completed
several weeks ago with B. Bhawal. The loop locks and gives qualitative
agreement with predictions. We will upgrade it by entering the as-built
electronics
parameters early next week.
The basic PSL model is thus essentially complete and we will now combine
the various loops and begin integrated testing. This afternoon we
will begin integrating
the PSL model with the IOO subsystem model being developed by M. Rakhmanov
and S. Klimenko who are working at Hanford this week.
Twice this week, the group working on the modecleaner encountered problems
with control of the PSL. They re-booted the IOC as an immediate remedy
that
allowed them to proceed with their work. The cause of the failure
is not understood; we will investigate further with D. Barker and C. Patton
when they return from
vacation.
Optics:
---------------------
(D. Cook & B. Weaver)
We have had a lot of Optics and Vacuum prep lab activities. The BS,
ETMy and FMx, Core optics have been cleaned their magnets glued, balanced
and are ready
to go into the Vacuum Bake oven today. The ITMx has been cleaned and
glued and will be balanced so it can go into the bake oven Tuesday. We
finished up the
second controller in the optics table to allow several optics to be
worked on simultaneously. BSC and HAM installation procedures are almost
ready for review. We
now have qualified over 70 people as Registered Laser Personnel at
Hanford.
LLO Weekly Report (an abbreviated report this week - hopefully with a greater number of contributions next week)
Optics: Received the balance (36) of ISC viewports which have been inspected and are in the stack for cleaning and baking. Ordered a second small ultrasonic cleaner to handle the increasing load, particularly Class A parts. Made stacking fixtures for viewports to secure them within the bake-oven. Ordered additional jumpsuits and booties to give us 100 complete sets of garb. Setup the CO2 snow gun for optics cleaning, and ordered a cart to transport both it and a bottle about the LVEA. Re-machined some tooling for Rich and ordered stock to replace other that was damaged. Continue to receive hardware and tooling for general site support. (Jonathan Kern)
Weather Station: Test of data logger software successful. Location
for LIGO added to Web. Program for writing weather to web page in process
by James Finney. Problem of lock up of weather station seems to be have
solved by changing Network connection; still testing. Campbell still investigating
datalogger hardware issue.
Suspension Test Stand Rolf to talk to Jay about software for
Stand.
CDS computers Passwords on London changed due to GC breakin
and breakin to LSU computers over the weekend.
GRASP OptimalF seems to funciton on seismic data using 40m calibration;
testing and debugging continuing. Shourov and Anthony began manipulation
of seismic data using matlab. (Anthony Rizzi)
Detector Installation: The BSC3 seismic stack was completed, bellows installed, dome replaced, and pumped down. Air bearings were also installed on HAM2&3.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
Initial alignment/optical levers (Zucker)
----------------------------------------
Debugged several wiring and connector problems with Josh and Richard
and
finally got optical levers functioning and reporting to CDS through
their EPICs channels. RM, FMy and ITMy optlevs are alive; MMT3
would be except it was left on its chamfer stops for the last pumpdown
and its beam is not returning to its receiver. Built new readout
screens which give an XY scope display for easier interpretation.
ISC design/fab (M. Smith)
--------------------------
Finished the ETM Transmission monitor assembly drawing along with the
Quad Diode Assembly drawing. Myron is kitting the hardware so
that we
are sure to have at least enough material for one assembly. Started
to
get some of the material for this assembly delivered. One set of optics
have been delivered, among other mechanical type, off the shelf
material.
The legs and weldments for the ETM optical levers have been shipped
to
the sites. The table tops however are still in machining.
I am trying
to expedite one table for delivery to Hanford by July 20. The
other
material, hardware for the tables have been shipped, and should be
at
Hanford or will be this week.
Received the riser blocks for the optical levers, that were reworked
to
allow the electrical isolation from the facility ground. These
can be
reassemble to the photodiode assemblies.
MC Controls Commissioning (P. Fritschel, D. Reitze, P. Saulson, N.
Mavalvala, M. Zucker, R. Adhikari)
-------------------------
Dave Reitze agreed to summarize the activity for all of us; see IOO
report.
-------------------------------------------
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
--------------------------------------------
- The request files for backing up the LHO 2k IFO PSL IOC settings
with
BURT have been tried and tested. Restoring from snap files has
also been
tested. The setup is described in T990047-00-D.
- Lock acquisition software for the frequency stabilization servo has
been
installed and tested on the LHO 2k IFO PSL. PslVme on startup,
now loads
the lock acquisition software for the frequency stabilization servo
and
the pre-modecleaner servo. The settings for the 21.5 MHz and
35.5 MHz
phaseshifters need to be manually loaded. During testing, the
PSL acquired
lock and functioned normally. There may be some undiscovered
bugs
however.
- PSL documentation that can be accessed from the MEDM user screens
is
currently in preparation.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
IOO - Dave Reitze
Most of the efforts this week continued on the
getting the mode cleaner
operational (participants included Nergis, Peter
F., Mike Z., Peter
Saulson, Rana Adhikari, Haisheng Rong, and Dave
Reitze. There was much
progress and success and, as expected, the discovery
of problems that
need to be resolved. Among the successes:
- With the servos to the PSL frequency VCO and
MC3, the mode
cleaner locks on TEM 00 in the low finesse mode
(with the
polarization rotated from S to P) for as long
as ~ 15 minutes (the
longest lock stretch was broken purposely).
The electro-optic
shutter for MC sensing diode protection was disabled,
so 100 mW input
powers were used to preserve the diodes.
- The MC achieved brief locks (< 1 s) the high
finesse mode (correct
polarization).
- Measurements of the cross couplings between
pitch, yaw, and position
were undertaken for the MC mirrors. We
had some (but not complete)
success at diagonalizing the sensor input matrices
to minimize
the cross coupling.
Among the problems:
- MC2 has large coupling between the position
and pitch and yaw modes,
so much so that the LSC input for length locking
was switched to MC3.
We are still trying to track this down.
- Minor problems in the MC servo demod board were
discovered (fried op
amps) and corrected.
- When in low finesse lock, the output mode oscillates
in position as
monitored by the transmitted light CCD.
Possible causes include the
aforementioned motion cross-couplings (best guess)
and scattered cavity
light selectively exciting the OSEM PDs when
in lock.
- misalignments were discovered on the PSL table
that need to be
corrected.
What's next:
Now that we can get a long lock, a number of measurements
are on the
horizon:
- accurate MC length
- servo loop transfer functions
- testing alignment sensing system
- a first crack at frequency noise
RFAM
Sany continued exploring methods for minimizing RFAM. A detailed
report
will be issued at a later date.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
No report received.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
Worked with Janeen bonding magnets and balancing: an ETM, a BS, a FM
and
an ITM. For details see Janeen's report.
Core Optics Support -- Michael Smith
------------------------------------
PO TELESCOPE
4 sets of telescope mirrors were coated by REO. 3 sets were shipped
to LHO
plus one extra secondary was also shipped inadvertently. 1 primary
mirror
was shipped to LLO. The extra secondary will be shipped from LHO to
LLO so
that LLO will have 1 full set. SORL is scheduled to ship to CIT 1 set
of
silver coated mirrors on 7/2. Bids are still being received for the
production of the PO telescope.
ETM TELESCOPE
The first article ETM telescope will be shipped to LHO on 7/1 for cleaning
and baking. We are still receiving quotes for the ETM telescope
production.
PO MIRRORS
Some of the SS tilt screws are still too tight and have been sent back
from
LHO to be electropolished again. They will be cleaned and baked at
CIT and
sent to LHO for installation on 7/12.
CAVITY BEAM DUMP
Most of the beam dump parts for BSC4 have been baked. All of the remaining
parts are at LHO awaiting an additional bake load except for two items
D990029 and D990030. The vendor expects to ship 6 ea of the missing
items
to arrive in LHO the morning of 7/6.
VACUUM WINDOW
Varian is remaking the conflat parts with the o-ring groove.
COS IR ALIGNMENT BEAM
IR laser source driver supplies were shipped on 6/30. The laser diode
is
being connectorized and is expected to be shipped 7/7.
ARM CAVITY BAFFLE
Paul K. is detailing the arm cavity baffles.
INSTALLATION PLAN
item
completion
install
Mode cleaner baffle
done
done
IO baffle
done
done
Elliptical baffle 2KRM, HAM9 done
done
Elliptical baffle 2KITMy, BSC8 done
pending
Beam dump BSAR3, BSC8
done
done
Beam dump FMYX, BSC8
done
pending
Beam dump FMYY, BSC8
done
done
Beam dump 4KITMHR3, BSC8
done
pending
Beam dump 4KITMHR4, BSC8
done
pending
PO mirror 2KITMx, BSC4
done
7/12
PO mirror 2KITMy, BSC4
done
7/12
Beam dump RMHR3, BSC4
done
7/19
Beam dump BSHR3P-2, BSC4
done
7/19
Beam dump ITMXAR1, BSC4
done
7/19
Beam dump ITMXAR4, BSC4
done
7/19
Beam dump ITMXAR4, BSC4
done
7/19
Beam dump ITMXAR4, BSC4
done
7/19
Beam dump ITMyAR1, BSC4
done
7/19
Beam dump ITMyAR4, BSC4
done
7/19
Elliptical baffle 2KITMx, BSC7 done
7/29
Beam dump FMXX, BSC7
done
7/29
Beam dump FMXY, BSC7
done
7/29
PO mirror BS, BSC7
done
7/29
PO Tel, APS, HAM10
done
8/3
ETM Tel
done
8/25
Arm Cavity Baffle, vertex
9/27
?
Arm Cavity Baffle, end
10/27
?
Conical baffle, vertex
8/23
?
Conical baffle, mid station 8/30
?
Vacuum windows
?
--------------------------
Isolation Group -- M. Fine
--------------------------
No Report Received.
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Daniel Sigg, John Zweizig)
The excitation engine was installed in the LVEA (rack 2X5). We
are still missing the GPS timing board which starts the digital-
to-analog converter on the exact 1 sec boundary. For now the
start signal is produced in software (probably adds a few 10 us
of additional delay). A loop-back test was performed by feeding
the DAC signal into one of the PEM ADC channels: works fine.
The diagnostics test software was put under version control.
After cleaning up the source tree it was moved to the cvs
archive at CIT which is maintained by LDAS.
Worked on updating the diagnostics test manual.
The SUN450 compute server for the DMT arrived at LHO.
Physics Environmental Monitor(Matt Smith, David Shoemaker)
-----------------------------------------------------------------------
THE SEISMOMETERS HAVE ARRIVED.
The missing material for the LA electro magnietic shaker assembly has
been ordered with two vendors. They should deliver in 2 weeks
time.
Shims for the BSC interface plates have been delivered, 8 at Hanford
and
4 at livingston.
The computers for the RGAs have been delivered. Mark Guenther
is
working on instlalling these at Hanford. The original Q421 software
is
being installed until the new software is deliverd.
Two RGA controllers were shipped to Hanford from Livingston. Four
RGAs
were delivered to MIT, after being refurbished by Balzers. These
will
be shipped to Livingston.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
Data Acq
=========
- Continuing requested updates/changes to dataviewer software.
- Problem has crept up at Hanford where timestamps periodically are
corrupted.
This appears to occur whenever requests for GDS signals start. Framebuilder
has
been temporarily modified to fix the timestamps until we can shut the
system
dowm and determine the cause of the problem.
- DAQ Antialiasing Filter
Completed building one LEMO version of the PCB. Plan to check out and
burn-in
the unit next week. Paul will be working on the housing for it.
ASC Software
=============
- Began modifications which would have the front end software directly
communicate with GDS and DAQS without the need for the supervisor interface
software. Code is written and testing has begun.
EO Shutter Controller
======================
Finished building another unit of the controller. In the process of
checking it
out.
LSC Mode Cleaner:
=================
Worked on a solution to a couple of problems discovered with the Mode
Cleaner Length Control demodulator. One is a gain dependent pole that
is
coming from an LT1590 variable gain stage. The other is a tendency
for the
output of the demodulator to hang at the plus or minus rail when the
gain
is set high in acquisition mode and a large signal excursion occurs
. The
first problem seems to be an inherent "feature" of the LT1590 in this
configuration. There are a couple of possible fixes. For now things
are
workable at lower gain settings. When we have better defined what gain
we
actually need we will apply the appropriate fix. The second problem
seems
to be fixed by lowering the feedback stabilization of the gain stage.
Timing System:
=================
I have tested the new GPS Clock Driver back here at Cal Tech with a
VME bus
analyzer under an assortment of conditions and cannot find any problems
such as were seen at Hanford. My best guess is that it was a seating
problem of the module / crate combination as this was the only thing
that
we had any trouble with in our tests here.
The Quarterly Report for the end of May 1999 is in process. The NSF has approved $2.3 million for FY 1999 Advanced R&D.
| CR-990001 | WBS 1.3 | Return Unused Budget for Construction Related R&D to Contingency | P. Lindquist |
| CR-990005 | WBS 1.1.4 | Livingston Site Fiber Optics Cable Installation | F. Asiri |
Press for the latest Contingency Needs Projection
From: Sarita Moore<moore_s@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA.
From: Kris Duncan <kris@ligo.caltech.edu>
GNB has received eight each 44 inch inner and
outer Fluorel O-rings (completed bake out). Rai Weiss expects to
ship the balance of the needed O-rings (2 each 48 inch inner and outer;
and 4 each 44 inch inner and outer O-rings) to GNB on Tuesday, 6 July.
GNB will measure and certify all O-rings to be acceptable for installation
before hand delivering them to
the LA Site.
The vendor (Walker & Sons) providing the fluoride extraction processing of detector Fluorel components has received the shipment of Tips, Liners, Shims and Seats. The Tips and Liners are being processed this reporting week according to the priority schedule given them by Bill Tyler. I will visit Walker & Sons on Thursday, 8 July to monitor the processing and to verify that controls are in place after the tornado recovery.
No report this week.
H.Yamamoto
* Worked with Rick, Malik and Sergei to build PSL and IOO subsystem
models. The details are reported by Rick Savage.
C.Taylor
* updated 95% the AdLib and 100% of the ALParser source
with the appropriate ANSI C++ STL equivalents.
* performed some minimal AdLib source testing
* assisted, the summer student, Brian Eng with the configuration
of his workstation in regards to compilers so that he can complete
the matrix evaluation task given to him.
[Xiao Hu]
* (XHU) worked on ilwd files
* (XHU) worked on describeMetaData SQL statements
* (XHU) worked on timing data insertation
[David Farnham]
* (DWF) Continued working with PERCEPS to set up an auto-documentation
system for my libraries/API's.
I have written filters which produce
documentation for parameters,
return values, exceptions and to-do
lists. I have also
written an input filter which scans !ppp: fields in
comments to pre-process
the file before running PERCEPS on it.
* (DWF) Continued working with Phil on the FrameAPI and Masha on the
Light-weight data API.
[Masha Barnes]
* (MB) Met with Kent to discuss DOM and SAX parser interfaces.
* (MB) Fixed some bugs in XML parser (memory leaks).
* (MB) Reviewed updated LIGO_LW Format document.
* (MB) Studied IBM's XML parser code to add other than 'file://' URL support.
* (MB) Had a meeting with Dave, Kent, and Albert on LightweightAPI.
[Phil Ehrens]
* (PSE) Met with Kent, Albert, and Mary to discuss the "getData"
user command set.
* (PSE) Continued work on frame API getData commands and command
processing. Began
testing new syntax for getData commands.
[Mary Lei]
* (ML) Updated getMetaData to conform the specifications
set up during status meeting
and email.
* (ML) Changed metadataAPI to output ilwd (lstrings only) correctly
via the genericAPI and not
via tcl puts.
* (ML) Attended database meeting to discuss the new metadata commands
putMetaData (insert/update
data) and descMetaData (get
database schema info).
* (ML) Developing the tcl ilwd translator to create ilwd object
for metadataAPI. Documented
ilwd format in ilwd tcl file.
Stuart Anderson:
Resolved the hardware problem on spica that prevented
reliable use of both
the external tape drive and disk drive at the same time.
Started an effort to clean up the software package
management system on spica.
Resolved the "mystery" crash of the LDAS gateway machine at LHO.
Applied patches to obtain ~100X performance improvement for
NIS+ on the
LDAS Alpha/Linux prototype machine.
Verified that the NFS bug on sirius that prevented compiling
the IBM XML
parser on a disk mounted from sirius was resolved by the
patch cluster applied
by Larry Wallace over the weekend.
Verified the functionality and performance of the ES2810
switch installed
by Larry Wallace in the LDAS/LHO network for the rapidly
failing loaner
ES3810 switch.
Lazzarini:
Denis Petrovic, our SURF student has finally arrived from Belgrade.
He is working on studying the useful of higher order spectral analysis
techniaues to identify and characterize non-Gaussian [but still stationary]
noise components. His work will build on Matlab tools developed last year
by Steve Drasco (another SURF student). He will start with 40m data from
1994. If useful techniques are identified, the intent is to provide a documented
set of code (possibly initially in GRASP) for the tools he builds.
Worked with LSC people to complete a draft of the Wp for Data Analysis in time fo rthe Stanford LSC meeting.
MIT:
Nothing to report.
Hanford:
Christine received the Ultra 450 general computing development machine,
Larry
and Daniel unpacked it and started to check it out. The video and the
FORE OC12
boards have been installed. Larry has picked up a monitor and keyboard
at CIT to
be shipped and used with the 450 unit. The OS and other installation
procedures
still need to be performed.
Fixed a number of PC issues including e-mail and printing.
Fred Raab is in the process of buying a new computer to meet the requirements
for the new accounting system at CIT.
The OC3 board for the FORE 2810 arrived and has been installed. The
2810 has
replaced the 3810 which started having problems. Some of the fibers
were also
replaced.
Livingston:
Working some security issues. Installing Solaris 7 on various SUN boxes.
Updated
the patches and repaired damage on a couple of boxes that were hacked
into.
CIT:
All of the computers that have been identified as working with the
new
accounting system on a full time basis have been upgraded to meet the
suggested
requirements.
Larry is working with Ed Jasnow on the logistics for the Observatories
to have
access to the new accounting system. Ed has been in contact with Rich
Fagen and
Alan Rice.
A number of PC's have been replaced by newer PC's. We are now down
to just a few
of the old P5-90's. Many of the machines will remain at CIT until after
the
Amaldi conference. They may be needed for use by the attendees of the
conference.
Samantha has been working a number of PC issues including updating
the
documentation and repairing a number of units. She has also been relocating
the
old PC's to her office (acting as a storage area) until the Amaldi
conference.
Suresh has finished up the monthly backups for the main server and is
in the
process of getting the other servers backedup.
He worked a SCSI issue on spica with Stuart A.
Added a number of users, mostly SURF students, and cleaned up some
accounts.
Reloaded the OS on a machine that has been hacked into from a month
ago.
The OC3 ATM uplink board for the FORE 2810 switch arrived. After a some
hours of
debugging and hacking through things we were able to get the unit programmed
and
put on-line. This experience made the upgrade performed at Hanford
go pretty
quickly.
Albert ordered a new Toolbox (Higher Order Spectral Analysis) for Matlab
and the
license has been installed.
Still working the air-conditioning issue for the computer room.
Larry met with David Reitze quickly to discuss UFL's connection to the
DCC. In
essence he will send Larry the information needed to put in the security
configuration files to all UFL access to the documents.
The usual of fixing printers, network cables and accounts took place.
Rita Torres
Took vacation on 6/25. Attended an Oracle debriefing on 6/28, attended an Oracle information session on 6/30. The following work was a bit challenging to do because two printers were out of service on the 3rd floor, lw3 and hp3. Lw3 is still not functioning.
For I Petrac did letters to bidders of RFP IP-311 regarding Notice of Selection (of California Machine Co.) for Machining of Creep Measuring Fixture. Formatted two MOUs, did subsequent edits. For E. Jasnow/F. Asiri did IFB EJ-313 for Furnishing and Installation of Entrance Signs at Hanford and Livingston.
For M. Zydowicz created the form Safety Inspection Checklist - OSB areas; did subsequent edits. Created form Safety Inspection Hazardous for Technical areas; 11 pages resulted. Did updates and verification of operations/safety documents on file in my office and in the DCC; reported findings to Mike Z. For Detector Group updated site trips. For A. Wiseman/T. Prince assisted with scheduling ASIS telecon for July.
Irene Baldon
WE ARE NOW IN THE "DARK PERIOD."
I, and the LIGO Core Administrative Staff, attended Oracle classes during the week of June 21st thru June 25th (4-1/2 days total). We had many questions and mixed feelings on the new system. On Monday, June 28th, we attended a meeting called by Phil Lindquist and Ed Jasnow for the purpose of obtaining our feedback. On Wednesday, June 30th, we again attended an Informational Meeting on Requisitions, Travel and Advance Requests, Petty Cash and Payment Request Forms. There are many changes coming and most, if not all, of the forms presently used will be changed. Together we can do it but it will take cooperation.
Due to the many classes and meetings I attended this past week I completed only 9 new trips (9 Purchase Requisitions and 4 Advance Requests) as well as all the necessary additional arrangements required for these trips. I have no new trips at this time. I able to complete 8 Expense Reports. I have 23 Expense Reports still to be completed (all received during this last week).
I completed the Travel/Vacation Itinerary for the Week of June 25th, 1999, and distributed to all LIGO interested personnel.
Performed miscellaneous duties as requested by various members of the LIGO Project here at Caltech, as well as from members of the staffs of each of the two (2) sites.
Dorothy Lloyd
Attended Oracle training classes the majority of last week on Web
Requisitions, Purchase Orders, SOS Buying and Receiving, and attended an informative session on Acquisitions and Payables Request Forms to replace existing forms Wednesday of this week.
Processed as many invoices as I could in the time allowed, and signed off on a number PO receivers.
Elizabeth K. Wood
Discovered from Vicky in the phone office. LIGO
has 111 voicemail boxes. Interesting, inasmuch as there are only slightly
more than 90 LIGOites here at Caltech.
Attended a whole meeting on using the transitional forms for travel, check requests (now called payment requests---let's get the terminology correct, folks), and whatever the other one was. These transitional forms are good for another, oh, say 8 to 10 months.
Missed all the ORACLE training last week due to serving time for jury duty. This prompts me to remind you that if you are called for jury duty and want to serve your days consecutively instead of hit-and-miss, let me know so you can take the consecutive days' service letter with you for your first day.
Worked on highly secret confidential personnel stuff. You know, the kind of information that, should it fall into the hands of ... yeah, whatever.
I'm off to the land of a few of my ancestors. I'll
be back July 12.
For additional information about this report, contact sanders@ligo.caltech.edu