FDC Weekly Meeting
Date: August 23, 2006
Participants: Daniel, Simon, Brian
Next Meeting: Wednesday, August 30, 2006 @ 9:30 a.m.
- The stretched cathode planes spent some time in the vacuum overnight to remove moisture. This had essentially no effect on the high resistance shorts on the planes. - The problem was tracked down to the soldering on the cable connectors. All 4 connectors on the two planes have been replaced and the shorts are now gone.
Simon has reconfigured the FDC prototype. He has the field/sense wire plane and the two tensioned planes in the configuration. He took data overnight and is analyzing the results at the moment. Note that the tensioned cathode planes were stretched laterally by several millimeters.
Cosmic Ray Chambers
Simon has not yet tested the signals in the cosmic detectors now that alcohol has been added. That will happen this week.
Brian has begun work on mechanical drawings for the full-scale FDC prototype. This includes frames, cathodes, and wire planes. He will have something to show next week.
Brian will contact Karen Kephart at FNAL to find out what stringing they can do for us. How long will the wire chamber shop be in business at FNAL?
- We should do some studies of gravitational sag of sense and field wires vs. angle. - Decide on layer rotation angles. Possibly 60 deg is not optimal and a shallower angle would reduce the effect and reduce distortions.
Simon will be on vacation next week - we will begin laying out the progress report that is due to the DOE at the end of September upon his return.
Minutes prepared by Daniel. Send any comments or corrections along.