E907 Installation Conference Call Minutes
|
2 May 2002 |
Phone Number |
Access Code: |
|
775-785-1944 |
536495 |
Agenda
|
Time (CST) |
Dur (min) |
Lead |
Topic |
|---|---|---|---|
|
3:00 |
5' |
call setup |
|
|
Chuck Brown |
BEAMS |
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|
Mike Heffner |
Beam CKOV |
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|
Peter Barnes |
TPC |
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|
Jim Ellermeier |
Magnets |
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|
Ingrid Fang |
CKOV Stand design and drawing status |
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|
Jim Kilmer |
RICH support stand bid package |
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|
Mark Messier |
RICH electronics |
||
|
Gary Smith |
NCAL Stand drawings |
||
|
Leon Beverly |
Chamber discriminator adapter board. |
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|
Tim Bergfeld |
TOF |
||
|
Virgil Bocean |
Alignment |
||
|
AOB |
Leon Beverly's meeting summaries in italics.
BEAM - Beamline
Chuck Brown:
The opening of MC6 target pile has begun. It takes a few weeks to get all concrete blocks off of the top.
UBL - Upstream Beamline Detectors
Kilmer:
Has 10" beam pipe, but needs the 12" beampipe.
TGTW - Target Wheel
CTGT - Cryogenic Targets
NTGT - NuMI (MINOS) Target
Ron Soltz:
- Gating Grid talks (emails) continue, schematics may turn up (see following)
- Visited LBNL and picked up following
- More schematics from Fred Bieser
- Order boxes from archives, full story at 3PM
- Spare pre-amps and SCA's
- Work on booting embedded linux kernel (David A. and Mike) continues
See TPC on Web for more info on DAQ
Peter Barnes
Grout order has been placed. Five kits in stock to be delivered this week; balance in 2 weeks.
Installation procedure in signature chain. Current plan is to start assembly May 14th. However, prior to starting, the 3 Rosie bases pieces of steel must have a 1 ¼" plate welded to the bottom of each. A temporary barrier wall will be installed in US MC7 Tuesday, May 7th.
JGG - Jolly Green Giant
Rosy
David Lange:
- Crates/Electronics requirements web page added to ckov web.
- Some info on cost/delivery of c4f10:
- Rough cost : $32.00 per lb
- Delivery 2-3 weeks.
Ingrid Fang:
The design work has completed including the track plates. Gary can start working on this after he finishes the support stand. A general assembly drawing is also required to include Chamber 1, CKOV unit,, Chamber2 support stand, cart and track plates.
Length of track plate to be as long as possible i.e. butt up to JGG base US and Rosie base DS. Completion of all drawings pushed back from next week to an additional 2 weeks.
Adam Bujak:
The remaining things to do are:
- Making ~100 cables for discriminator-to-tdc connection (have them already at Lab.6). Gyula Zilizi has promissed to help.
- Adjusting power voltages in the discriminator crates (do not know yet how).
- Some programming (trivial).
- Find (at least) 2 additional scintillators for the trigger and set them up.
- Get 3-phase power at Lab.6 (Leon promissed to organize it).
- WAIT for the gas and the adapters.
I belive, that I will be able to take care of data taking with the first chamber. The most useful help would be in the data analysis (defining chamber geometry, track recognition, etc.) and preparation of the remaining chambers for testing (capacitance measurement - proven useful, attaching preamp.supports and shielding).
I have found some number of bad preamps and preamp-to-disriminator cables. Some discriminator boards were so dirty I had to wash them. After the procedure, two discriminator boards (out of 60) do not work. I do not know, what has killed them (I didn't risk to try them before taking out of ~1 mm leyer of dirt). All the discriminators I'm using are meant for the small crates, they are NOT exchangeable with those in the large crates stored in PC4. What follows from all of that, is that we need to test the stuff (cables for sure) before the final installation - independently from our test.
At the moment I'm looking at signals from ampplifiers by sending a (square) pulse from a pulser to the cathodes. The front of the pulse is much too fast, so the amplifier response is quite "dirty". But it's good enouch for setting up timing and checking if the preamps are alive. There is an indication of quite large differences in amplification of different channels. If this is true, we need to think about providing threshold voltages to individual discriminator boards (in "my" crates, same voltage is applied to the entire crate; I do not know, how the backplanes of the PC4 crates are wired).
Ingrid Fang:
The inner frame and outer frame drawings have been checked. Gary needs to make a assembly drawing to show how the inner frame works with the outer frame.
LLNL placed PO for discriminator pc adapter board; two additional 208V circuits needed by Adam to power up discriminator crates at lab 6 will be installed Tuesday, May 7th; DC#2 inner & outer frame drawings checked, assembly drawing next.
Andrew Godley:
I don't know how much of this has already been reported, but Tim is away at the moment. This is what Carl and I have to report:
- We have samples of the full sized scintillator bars on order.
- We have 3 2" photo tubes that we are currently test.
- We have made a sample light pipe out of plastic, and now have the UVT [Ultra violet transmitting... the type of acrylic we will use to make the light tubes. ] to make a working sample. The first was to test the machining process.
Need physical design parameters & its location
Peter Barnes
RICH casters have been ordered from Castor Corporation, delivery in 1 week. RICH Stand and track plate order is with Betty.
Contract with Burns Machine to build support stand under way, but no PO yet.
Ingrid Fang:
I have not had time to check the drawings yet. But I will do it next.
Alignment
Virgil will have the floor marked for base steel location on Tuesday.
Peter Barnes
MC7 Enclosure materials have been ordered from Arch Technology.
The next call will be Thursday, 9 May 2002, at 3:00 CDT.