From:	SMTP%"pwp@v2.rl.ac.uk" 18-JAN-1997 08:43:21.80
To:	SMTP%"unno@kekvax.kek.jp"
CC:	PWP, djm1@hep.phy.cam.ac.uk, jdr@hep.ph.liv.ac.uk
Subj:	Mounting for UK Centre Tap module

Dear Nobu,

I have just finished drawing a possible support frame for the UK centre tap 
module, to use at the KEK testbeam.

I based the scheme around the drawings of the KEK end and centre tap modules and 
their supports available from your web page.  The mounting holes are in the same 
places with respect to the centreline of the detectors, although the footprint 
of the support is a little larger.  I hope this will not be a problem.

Our module will be built on a 380 micron beryllia baseboard.  I am worried that 
this may crack, if the support frame to which it is mounted is so weak as to 
deform easily.  I would like to make the frame from 6mm thick material, 
preferably ALCOA aluminium.  I have left a large gap around the detector, except 
at the mounting points: hopefully the remaining material will not be so bad for 
multiple scattering.  If aluminium is not acceptable, we could use some kind of 
resin bonded laminate.

I have placed postscript files of these drawings on WWW.  The relevant home page 
is:

http://hepwww.rl.ac.uk/atlas/tracking/ET/ET.html

and the postscript files are

http://hepwww.rl.ac.uk/atlas/tracking/ET/CT1.ps
                                        /CT2.ps

I could not view these files with Ghostview, but they print OK.  Please take a 
look, and let me know if modification is required.

Cheers,

Peter.
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Subject: Mounting for UK Centre Tap module
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