Difference between revisions of "Minutes-6-23-2016"
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#** +2kV on sense wires, -500V on field wires, -1.4kV on the upstream cathode, downstream cathode (with strips) on ground [http://www.jlab.org/Hall-D/detector/trd/TRD_Garfield_NO_sc.png Garfield field/drift time simulations] | #** +2kV on sense wires, -500V on field wires, -1.4kV on the upstream cathode, downstream cathode (with strips) on ground [http://www.jlab.org/Hall-D/detector/trd/TRD_Garfield_NO_sc.png Garfield field/drift time simulations] | ||
#** Adding additional cathode separates the drift and amplification volume and allows to set independently drift velocity and gas gain [http://www.jlab.org/Hall-D/detector/trd/TRD_Garfield_second_cathode.png Garfield simulations], [http://www.jlab.org/Hall-D/detector/trd/TRD_Garfield_second_cathode_track.png track example] | #** Adding additional cathode separates the drift and amplification volume and allows to set independently drift velocity and gas gain [http://www.jlab.org/Hall-D/detector/trd/TRD_Garfield_second_cathode.png Garfield simulations], [http://www.jlab.org/Hall-D/detector/trd/TRD_Garfield_second_cathode_track.png track example] | ||
| − | # | + | # Design ideas: [http://www.jlab.org/Hall-D/detector/trd/Drawing1_Layout1.pdf 3D schematic] |
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Revision as of 11:31, 23 June 2016
June 23, 2016 Transition Radiation Detector meeting
Recent TRD reports at the GlueX collaboration meeting
Prototype: requirements and very preliminary design
- Requirements:
- Use existing FDC pre-amps, fADC125, connectors, cables
- Wires and strips at 90 deg.;
- One 24-channel pre-amp for the wires and one pre-amp for the strips.
- Active area sizes:
- 240 mm across wire direction: sense wire pitch of 10 mm
- 120 mm across strip direction: strip pitch of 5 mm.
- Field wires in between sense wires with 10 mm pitch.
- 20 mm drift gap
- Max drift time < 3 microseconds (to be used within the standard GlueX DAQ):
- +2kV on sense wires, -500V on field wires, -1.4kV on the upstream cathode, downstream cathode (with strips) on ground Garfield field/drift time simulations
- Adding additional cathode separates the drift and amplification volume and allows to set independently drift velocity and gas gain Garfield simulations, track example
- Design ideas: 3D schematic
