Week of March 29, 1999

HAPPENINGS:

MST VENT
Target date of early to mid May.

SECONDARY BEAMLINE TRANSITION CHAMBER
The secondary beamline transition chamber has been certified vacuum tight
by John.

HIGH VOLTAGE SHELF
no progress made

TRAJECTORY CALCULATIONS FOR THE LEVITATED DIPOLE EXPERIMANT (LDX)
A "Feasibility Study: HIBP for LDX" containing trajectories calculated by
Lei was mailed to Mike Mauel Thursday, April 1. See Ken for a copy of the
study.

KENS VISIT
Ken was in Madsion from Saturday through Tuesday. Saturday: Ken and I met
with Stewart. He reconfirmed that the vent would be some time in May.
Lei, Uday, Ken and myself then discussed sweep plate calibration and
primary beam detection, primary beamline alignment (see below) and LDX
trajectory calculations (see above).

SWEEP PLATE CALIBRATION, PRIMARY BEAM DETECTION, PRIMARY BEAMLINE
ALIGNMENT
Some of the discussed items
- Do we know how much plasma enters the pumping ducts?
- Initially use the most simplified detector possible (ie. a rod). The
detector must be insulated from the MST machine.
- Make sure the rod is mounted down into the pumping ports to avoid
sputtering onto the insulator and shorting the rod out.
- The wall area of the vessel on which primaries will strike with field is
not covered by pumping ducts. If we looked at plasma conditions
other than the common ones (ie lower current) could we hit an area covered
by pumping ducts.
- for B-field measurements - a possible scheme is to mount a rod between
two pumping ducts which is conformal to the MST wall. A possibility is to
put the conformal rod on an area of the wall where we'd cross during a
crash.
- The pumping holes are 1 1/2" in diameter; devise a
small insulated mounting structure which will not obstruct pumping.
- Lei is looking into which ports would be useful and which ports MST will
allow us to use.
- is there a port on which we can install an extractable
rod - the purpose would be to upgrade to a more complex detector (ie.
circular detector segmented into pie shapped pieces)?

OTHER
I will traveling from Madison to Troy on 1/2. I will be in Troy from Wed
- Fri 4/7 - 4/9. I will be transporting the secondary beamline transition
chamber and a variety of other parts from Troy to Madison on my return.
I am hoping that Ken, Paul, Tom, John and I can get together as a group on
Thursday. If someone there would like to pick a time, get us a room, and
e-mail everyone else that would be helpful.

IMMEDIATE
ACTION ITEMS
_____________________________________________________________________
LEI

WEEK of 2/8/99
Modify electronics for primary beam line in-progress
(incorporate beam current readback etc)

WEEK OF 3/1/99
Finish LDX trajectories in-progress

WEEK OF 3/22/99
Work on sweep plate calibration procedure in-progress

WEEK OF 3/29/99
Examine primary beam detection and primary
beamline alignment along with the sweep plate
calibration procedure.
_____________________________________________________________________
UDAY

WEEK of 2/1/99
Design, order materials, and
pre-fabricate HV cage in-progress
Update/Complete list of HIBP control/readback/
status signals in-progress
Check on status of Rowe HV connector order
(order delivery date was 1/9/99)
Order additional equiptment needed for
computer control (ie. Jorway timing
module, LabView, fiber optic cable) complete
Assemble electronics for vacuum controllers
Install into BPM controller additional complete
connector for Camac read-back

WEEK of 3/1/99
Request run for secondary aperture test
Finalize control system voltage specs

WEEK OF 3/22/99
Request vacuum parts needed out of Tx.
_____________________________________________________________________
DIANE

WEEK of 2/1/99
Work on Particle Transport paper in-progress
WEEk of 3/22/99
Work on installation of HV shelf
Arrange for leak-checking of PBL transition
chamber in-progress
Provide Lei with html files of 2/17 presentation complete
Work on longer term schedule to include in-progress
secondary beamline design, fab and
installation

_____________________________________________________________________

Feel free to contact me by phone (608) 263-2967 or email (diane@hibp)
at any time.

Diane

Week 2

Week 3

Week 4

Week of April 24, 1999

HAPPENINGS:

MST VENT
The vent will begin Tuesday June 1 (May 31 is a holiday), with various
diagnostics being removed from the machine the previous Thursday and
Friday. I am happy to say that I am quite confident that this date will
not change.

PRIMARY BEAMLINE TRANSITION CHAMBER
The primary beamline transition chamber is blanked off and awaiting
leak-checking. The 14 1/2" conflat flange which is the flange
furthest from the MST chamber on R2D2 has a nick on the knife edge.
This nick most likely occured in the machine shop, but I did not
notice it until I began assembling the chamber. I was originally
concerned that it might not seal, but I have sealed that flange twice
and examined the copper gasket once. It appears that it will still
cut into and not just compress the copper. We will know more once it is
leak checked. Steve Oliva has been out all week. I am hoping he will be
in next week.

HIGH VOLTAGE SHELF
The holes into which the 7" bolts will anchor the shelf to the
concrete wall have all been drilled. Bill Zimmerman put together some
pretty clever rigging, and between last and this Wednesday (maintenance
days) we got all of the holes drilled. Bill now has SOME part drawings
from Tom Lovell and we will begin to cut material on Monday. There is a
good deal of cutting, welding, drilling and sub-assembly to be done before
the shelf will be hefted up onto the wall in modular units. My hopeful
outlook is a two to three week period to completion.

TRAJECTORY CALCULATIONS FOR THE LEVITATED DIPOLE EXPERIMANT (LDX)
A "Feasibility Study: HIBP for LDX" - Has anybody heard anything?

PRIMARY BEAM DETECTORS
Lei has done a great job inquiring and arranging our use of pumping duct
holes and the 2" port. He's also machined most of the detector parts and
done a snugness fit into a simulated pumping duct hole. The wedge seems
to work well. We are assuming that the plastic like parts should not be
ultrasonically cleaned, but rather simply cleaned in soapy water, then
rinsed with clear water, ethanol and then distilled water. Please let us
know if this is the correct process.

REYNOLDS (ROWE) CONNECTORS
The latest is that the HV feedthru bodies that
Reynolds received from their supplier were sent back to the supplier due
to a manufacuring error or something like that. Reynolds is expecting
bodies from the supplier on May 5 and projects filling our order on May
18. I will call again on May 6 to check up on them. We should begin
entertaining the idea of going with the King connectors.

LABVIEW
National Instruments has both orders for the LabView stuff. I am working
out a few minor details over the phone regarding serial numsers, end user,
etc..
The fiber optic cabling has arrived.

PRIMARY BEAMLINE SWEEP SUPPORT STRUCTURE
All drawings for the primary beamline support structure are in the machine
shop.

OTHER
I haven't added much to the lists below since we are all busy working on a
variety of small projects and tasks.

IMMEDIATE
ACTION ITEMS
_____________________________________________________________________
LEI

WEEK of 2/8/99
Modify electronics for primary beam line in-progress
(incorporate beam current readback etc)

WEEK of 4/26/99
Working on primary beam detectors in-progress
_____________________________________________________________________
UDAY

WEEK of 2/1/99
pre-fabricate HV cage in-progress
Update/Complete list of HIBP control/readback/
status signals in-progress
Assemble electronics for vacuum controllers

WEEK of 3/1/99
Finalize control system voltage specs

WEEK OF 3/22/99
Request vacuum parts needed out of Tx.
_____________________________________________________________________
DIANE

WEEK of 2/1/99
Work on Particle Transport paper in-progress
_____________________________________________________________________

Feel free to contact me by phone (608) 263-2967 or email (diane@hibp)
at any time.

Diane