From settles@mppmu.mpg.de Mon Dec 17 15:30:28 2007
Date: Mon, 17 Dec 2007 15:29:45 +0100 (CET)
From: Ronald Dean Settles <settles@mppmu.mpg.de>
To: lctpc@desy.de
Subject: Summary WP phonemeeting #45 05.12.20


Dear lctpc friends,

    Here is a summary of the phonemeeting week-before-last. Slides are at
http://ilcagenda.linearcollider.org/conferenceDisplay.py?confId=2430
and the summary is below. Let me know if you have something to add/change...
      Greetings,
                 Ron

P.S. The next meeting on this coming Wednesday is announced under AOB
below.  I will send a separate announcement tomorrow.

           --------------------------------------------
   Wednesday 05 December 2007
  West Coast    East Coast      W.Europe       Japan
   06.30         09.30           15.30         23.30

       Agenda
     -----------------------
1. News
2. LP cosmic trigger
3. LP endcap, fieldcage, laser
4. LP electronis status (tbc)
5. AOB

--Present:
Paul Colas
Klaus Dehmelt
Ralf Diener
Madhu Dixit
Lea Hallermann
Katsumas Ikematsu
Xaviwe Jannsen
Leif Joensson
Dean Karlen
Sasha Kaukher
Takeshi Matsuda
Dan Peterson
Peter Schade
Oliver Schaefer
Ron Settles
Jan Timmermans
--Anybody forgotten?

       Summary
     -----------------------
1. News

For the MOA, five more groups have sent signatures. (The latest version
of the MOA and Addendum 2007 are on the website of meeting #44:
http://ilcagenda.linearcollider.org/conferenceDisplay.py?confId=2377)
The remaining groups are asked to 'get with it', and if you haven't done so, please send
your signature by normal mail to me
Ron Settles
Max-Planck-Instute for Physics
Foehringer Ring 6
D-80805 Munich
and I will put together a master version and send a copy to all groups.

2. LP cosmic trigger

The cosmic-trigger status was summarized in Paul's slides on the agenda site.  A team
has started work at Saclay (names on slides). Progress is good, delivery can be expected
in January, and cosmic triggering could start in March.

3. LP endcap and fieldcage

Dan went through the latest items on his website:
http://w4.lns.cornell.edu/~dpp/linear_collider/LargePrototype.html.
For details, click on
-"page of current drawings"
-"page of Assembly configurations"
-"page for the Gas Seal test"
-"page for the Stress Relief tests

Items covered during the phonemeeting were as follows:
-----------------------------------------------------
-Vendors
Dan has asked 3 vendors to make a "stress plate" to test their abilities.

-There was a lengthy discussion between Dan and users which I won't summarize here
because of the transitory nature of the details but just say about what, namely:
light-holes, gas-holes and "fun"-hole positions/sizes. Dean has specified the light
holes. Leif and Sasha asked about brackets for the electronics, and Klaus about fixing
"feet" for sliding the chamber in and out on rails.  Peter and Dan discussed about
sizes of holes endplate<->endplate and radius of 0-ring groove. Dan requested users to
give final specifications the day before the next meeting, i.e., 18 December, so that he
can place the order with the chosen vendor on time.

-Module Back-Frames are being fabricated, 2 each for Akira, Paul and
Martin.

-Field cage threaded inserts must pass a test of 3600N pull-out force.

-Field Cage Termination Plates: work in progress.

-Alexei's laser was not discussed because he couldn't attend today's meeting.
He will send a drawing.

4. Because the above discussion was long, Leif will report on the status of
the electronics at the next phonemeeting.

5. AOB
Next phonemeeting: WP#46 on 19 December 2007, usual time.  Meeting page:
http://ilcagenda.linearcollider.org/conferenceDisplay.py?confId=2472