From settles@mppmu.mpg.de Wed Jun 27 15:00:48 2007
Date: Wed, 27 Jun 2007 12:07:38 +0200 (CEST)
From: Ronald Dean Settles <settles@mppmu.mpg.de>
To: lctpc@desy.de
Subject: [lctpc] Agenda of the WP#33 phonemeeting today 


Dear LP/LCTPC friends,

   The WP phonemeeting today will continue the discussion started at our
face-to-face meeting in Desy three weeks ago.  Here is the agenda, where
I have listed some open questions for LP1.  If you can't join the
phonemeeting, please send your comments by email and I will include them
in the summary of the meeting...
          Cheers,
                 Ron


            WP#33 27/06/2007
           --------------------------------------------
   Wednesday 9 May 2007
  West Coast    East Coast      W.Europe       Japan
   07.00         10.00           16.00         23.00


To join,
     dial +494089981390, after a few seconds into an answer in German,
type the code number 52872# (LCTPC#).

       Agenda
     --------------------
1.   Klaus Dehmelt will lead the discussion on an important point to
specify a.s.a.p.: how the setup should be configured for cosmic running.
--how should the TPC be rotated and by how much?
--where should the trigger counters be located, inside or outside the magnet?
--what else?

2a.   After Dan Peterson's talk at Desy 3 weeks ago, here are some points
to clarify (see Dan's latest drawings at his usual place
http://w4.lns.cornell.edu/~dpp/linear_collider/LargePrototype.html):

--gas-tightness tests: 2mbar overpressure has been used successfully by Star,
  so shouldn't we use the same for LP1?
--gas inlet/outlet, where?
--temperature stability/cooling?
--cable supports?
--Number of bolts and pins, see next agenda item.
--What else?

2b.  Peter Schade's fieldcage report 3 weeks ago resulted new
specifications
for the overall diameter.  Are the following dimensions correct?

--i.d. of fieldcage                        720mm
--wall of fieldcage      25mm on the radius=50mm on the diameter
--SiLC detectors         35mm on the radius=70mm on the diameter
--clearance                                 10mm
                                          -------
--total                                    850mm
Dan's stay-clear diameter of 714mm is therefore still valid, correct?

--The number of bolts and pins for fixing the endplate to the fieldcage:
proposal: to attach with 40 M6 bolts and 4 pin positions
(NB: more than 2 pins at once is overdetermined, and with 2, one pin
should be opposite a precision hole and the other opposite a "Siemen's Langloch").
--What else?

3.   Leif discussed aspects of the pad layout and connectors 3 weeks ago;
here are some questions which came up?
--The layout was not yet adaped to a curve pad plane.
--Lund's layout was for 1mmx4mm pads.
--The CDC prototype is with 1.17mmx5.0mm pads.
--Akira and Leif have sent files today (27.06.2007) to everybody with
  proposed layouts (they are attached to this email again), to be
  discussed today.
--What else?

4. AOB


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