From: Hill, JA (John) [J.A.Hill@rl.ac.uk]
Sent: 30 August 2006 11:15
To: Gilles Favre
Cc: Cockerill, DJA (David); Olivier Teller
Subject: CMS EE End Cap Main manifolds

Follow Up Flag: Follow up
Flag Status: Red

Attachments: td-1029-747.pdf; td-1029-739.pdf; td-1029-746.pdf

Bonjour Gilles,
I have been recently trying to progress the design of the main internal manifolds of the CMS EE End Cap.
Some time ago during our discussions of the EE Cooling blocks I showed you the design of a arc-shaped
manifold section with various input/output lines welded to it. I have recently spoken to a company who
are interested in producing the components for our Dee 4 test beam assembly, they have taken the drawings
away and are due to comment on this within the next week. Obviously they would like to produce the complete
unit and they have been made aware of the standards of which the unit is to be welded. Before we progress
much further I would appreciate it if you could comment on the drawings (attached to this mail) and the 
proposal from the company when it arrives. The company would be happy to discuss technical issues with 
regards to welding in person, this may be at CERN or here in the UK.
A short comment on the drawings, the main section drawing is essentially a complete unit with lines 
already welded into position. Entry points into the main arched section will be formed by an extraction 
tool before welding the pipe sections into position. I have also include my proposed drawing of an end plug, 
these are to be welded at the ends of the main arched sections. If you have any proposals regarding the 
design I am more than happy to hear about them.

I or Dave Cockerill will send you the proposal from the company as soon as we receive it.

Best Regards
John




John A Hill IEng MIED 
Project Engineer

CCLRC Rutherford Appleton Laboratory
Project Engineering Division, Chilton, Didcot, Oxon OX11 0QX


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