Difference between revisions of "Minutes 8-23-2006"
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| − | + | ==Cathode Planes== | |
- The stretched cathode planes spent some time in the vacuum | - The stretched cathode planes spent some time in the vacuum | ||
overnight to remove moisture. This had essentially no effect | overnight to remove moisture. This had essentially no effect | ||
| Line 16: | Line 16: | ||
replaced and the shorts are now gone. | replaced and the shorts are now gone. | ||
| − | + | ==Small-Scale Prototype== | |
Simon has reconfigured the FDC prototype. He has the | Simon has reconfigured the FDC prototype. He has the | ||
field/sense wire plane and the two tensioned planes in the | field/sense wire plane and the two tensioned planes in the | ||
| Line 23: | Line 23: | ||
were stretched laterally by several millimeters. | were stretched laterally by several millimeters. | ||
| − | + | ==Cosmic Ray Chambers== | |
Simon has not yet tested the signals in the cosmic detectors | Simon has not yet tested the signals in the cosmic detectors | ||
now that alcohol has been added. That will happen this week. | now that alcohol has been added. That will happen this week. | ||
| − | + | ==Mechanical Drawings== | |
Brian has begun work on mechanical drawings for the full-scale | Brian has begun work on mechanical drawings for the full-scale | ||
FDC prototype. This includes frames, cathodes, and wire planes. | FDC prototype. This includes frames, cathodes, and wire planes. | ||
He will have something to show next week. | He will have something to show next week. | ||
| − | + | ==Wire Stringing== | |
Brian will contact Karen Kephart at FNAL to find out what | Brian will contact Karen Kephart at FNAL to find out what | ||
stringing they can do for us. How long will the wire chamber | stringing they can do for us. How long will the wire chamber | ||
shop be in business at FNAL? | shop be in business at FNAL? | ||
| − | + | ==Design Discussions== | |
- We should do some studies of gravitational sag of sense and | - We should do some studies of gravitational sag of sense and | ||
field wires vs. angle. | field wires vs. angle. | ||
| Line 44: | Line 44: | ||
reduce distortions. | reduce distortions. | ||
| − | + | ==Schedules== | |
Simon will be on vacation next week - we will begin laying out | 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 | the progress report that is due to the DOE at the end of | ||
Latest revision as of 11:52, 11 April 2007
FDC Weekly Meeting
Date: August 23, 2006
Participants: Daniel, Simon, Brian
Next Meeting: Wednesday, August 30, 2006 @ 9:30 a.m.
Contents
Cathode Planes
- 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.
Small-Scale Prototype
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.
Mechanical Drawings
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.
Wire Stringing
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?
Design Discussions
- 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.
Schedules
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.
