Difference between revisions of "Minutes 9-13-2006"
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| − | + | ==Mechanical Drawings== | |
- Brian provided a CAD drawing for the full-scale plane | - Brian provided a CAD drawing for the full-scale plane | ||
tensioning system. Simon can use this in the FDC report that | tensioning system. Simon can use this in the FDC report that | ||
| Line 17: | Line 17: | ||
of these will be put into the FDC report for DOE. | of these will be put into the FDC report for DOE. | ||
| − | + | ==Ground Planes== | |
- We discussed the idea of using sprayed on graphite or conducting | - We discussed the idea of using sprayed on graphite or conducting | ||
ink for the FDC ground planes. Chris Cuevas has no real preference | ink for the FDC ground planes. Chris Cuevas has no real preference | ||
| Line 29: | Line 29: | ||
tests. | tests. | ||
| − | + | ==Design Issues== | |
Brian is planning on using a ``tensile tube" system to limit | Brian is planning on using a ``tensile tube" system to limit | ||
compression of the FDC package so that the foam layers will not | compression of the FDC package so that the foam layers will not | ||
be compressed. | be compressed. | ||
| − | + | ==Rohacell== | |
The Rohacell order has still not gone out due to delays in the | The Rohacell order has still not gone out due to delays in the | ||
12-GeV office. | 12-GeV office. | ||
| − | + | ==Monte Carlo== | |
Simon is tuning up HDFAST to address material budget questions and | Simon is tuning up HDFAST to address material budget questions and | ||
thickness limitations for momentum resolution. | thickness limitations for momentum resolution. | ||
| Line 48: | Line 48: | ||
Curtis. | Curtis. | ||
| − | + | ==Gas System== | |
We briefly touched on the gas distribution system for the FDC | We briefly touched on the gas distribution system for the FDC | ||
system and cooling needed for the on-chamber electronics. No | system and cooling needed for the on-chamber electronics. No | ||
real design or discussion yet on these two points. | real design or discussion yet on these two points. | ||
| − | + | ==Schedule== | |
Due to the upcoming BCAL test in Hall B, we will not have our | Due to the upcoming BCAL test in Hall B, we will not have our | ||
next FDC meeting for several weeks. | next FDC meeting for several weeks. | ||
Minutes prepared by Daniel. Send any comments or corrections along. | Minutes prepared by Daniel. Send any comments or corrections along. | ||
Latest revision as of 11:55, 11 April 2007
FDC Weekly Meeting
Date: September 13, 2006
Participants: Daniel, Brian, Simon
Next Meeting: Wednesday, October 4, 2006 @ 1:30 p.m.
Contents
Mechanical Drawings
- Brian provided a CAD drawing for the full-scale plane tensioning system. Simon can use this in the FDC report that he is working on. - Brian is continuing to work on the FDC mechanical drawings. Things are progressing on the layout and frame design. We are still several weeks away from mature drawings. A version of these will be put into the FDC report for DOE.
Ground Planes
- We discussed the idea of using sprayed on graphite or conducting ink for the FDC ground planes. Chris Cuevas has no real preference between these. This approach will eliminate 24 kapton layers for the FDC system. The idea is to spray this directly onto the Rohacell. - We raised the idea of using spray-on conducting ink for the cathodes too. The local flatness is such that this cannot be used given our flatness tolerance according to Brian. - Brian will pursue getting a sample of conductive ink to do some tests.
Design Issues
Brian is planning on using a ``tensile tube" system to limit compression of the FDC package so that the foam layers will not be compressed.
Rohacell
The Rohacell order has still not gone out due to delays in the 12-GeV office.
Monte Carlo
Simon is tuning up HDFAST to address material budget questions and
thickness limitations for momentum resolution.
- kapton sheets = 50 microns
- epoxy layers = 25 microns
- Rohacell layers = 5 mm
- Do calculations of dP/P vs. P, theta with and without the
material. We can then discuss results with Elton and
Curtis.
Gas System
We briefly touched on the gas distribution system for the FDC system and cooling needed for the on-chamber electronics. No real design or discussion yet on these two points.
Schedule
Due to the upcoming BCAL test in Hall B, we will not have our next FDC meeting for several weeks.
Minutes prepared by Daniel. Send any comments or corrections along.
