Difference between revisions of "Minutes 9-6-2006"
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Revision as of 08:59, 13 December 2006
FDC Weekly Meeting
Date: September 6, 2006
Participants: Daniel, Brian, Simon
Next Meeting: Wednesday, September 13, 2006 @ 1:30 p.m.
1). Brian has produced a new end view drawing of the FDC. His plan
is next to add traces, connectors, and bolt holes to the individual planes.
2). Brian brought a 1-cm thick sample of Rohacell to show us. This
material can be machined to a very high degree of flatness. The Rohacell thickness between the cathode and ground planes is nominally 5-mm.
3). Brian told us his plan is not to mount the Rohacell to a frame.
He believes that this is not necessary. From Brian's conversations with Youri Sharabian, Rohacell is gas tight.
4). The PR for the full-scale tensioning system has finally been
signed.
5). Brian will start work on a full-scale mock-up of the Rohacell
sandwich. If kapton is not available, then mylar will be used. The Rohacell order should arrive in ~2 weeks.
6). Brian talked to Karen Kephart of FNAL. It seems as if the wire
winding shop will be available to ~2010.
7). Brian discussed a neat wire deadening system used by Karen.
The wires are embedded in a copper solution to build up their radii to a specified level -- this kills the gain in an elegant manner.
8). DSC asked whether circuit boards can be made with a Rohacell
dielectric -- Brian will look into this but the issue could be local flatness.
9). Brian will look into PC board manufacturers who can make 1.2 m
circuit boards to our specs.
10). Brian will show DSC the small-scale tensioning system in the
EEL building this week. We need to plan on how to make a chamber stack.
11). Simon needs to do Monte Carlo to specify the allowable Rohacell
and epoxy thicknesses. - Note that there is no need to epoxy Rohacell to the ground planes in the active region. Epoxy only at external edges and possible the center point. - Cound this work for the cathode planes as well? Some tensioning might be required.
12). DSC again raised the idea not to tension the cathode planes
but to work on a flat surface instead and roll the plane flat.
Minutes prepared by Daniel. Send any comments or corrections along.