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Meetings [message #260] Wed, 24 March 2004 14:57
Harald Appelshaeuser is currently offline  Harald Appelshaeuser
Messages: 39
Registered: March 2004
Location: GSI
continuous participant
Dear colleagues,

this is a brief summary of the TRD readout chamber construction
meeting on February 26 at GSI.

1) we have agreed that a fast and efficient exchange of technical
information between the different production sites is desirable.
I promised to come up with a proposal which I will communicate
to you in a separate message.

2) to facilitate the preparations for the upcoming mass production,
the different chamber types together with a detailed production
schedule should be assigned to the various sites. The goal is
to produce as few as possible different types in a given site.
This is mostly constrained by the timely delivery of the pad
planes, which requires another iteration by David.

3) the preparation of a detailed construction manual has top
priority. Based on the present experience at Heidelberg,
almost all necessary information should be available. This
manual should contain a detailed description of procedures,
tools and materials (e.g. glue, cleaning agents etc) as well
as mechanical tolerances. Clemens agreed to work on it and spot
the remaining open issues.

4) we also need a detailed description of all necessary test
procedures. Again, most of the information needed should be
at hand.
The following tests are presently foreseen:

- optical inspection of wire after each winding
- check of wire tension and positions (using the Muenster device)
- check of wire contact
- leak tightness
- electrical strength
- gain uniformity

Open issues are:

- flow rates, voltage settings, radiation source, test
duration etc.

Johanna agreed that the description of the test procedures
can be worked out in Heidelberg.

Regards, Harry
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