Difference between revisions of "Start Counter Cheat Sheet"

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[[File:Sym_30_front_combined.png|thumb|link=https://halldweb1.jlab.org/wiki/images/1/17/Sym_30_front_combined.pdf|SiPM readout concept (PDF)]]
 
[[File:Sym_30_front_combined.png|thumb|link=https://halldweb1.jlab.org/wiki/images/1/17/Sym_30_front_combined.pdf|SiPM readout concept (PDF)]]
 
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[[File:sym_30_front_2annot.pdf|thumb]]
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[[File:sym_30_front_2annot.png|thumb]]
 
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* outer diameter of scattering chamber: 3.72″
 
* outer diameter of scattering chamber: 3.72″

Revision as of 16:19, 6 December 2011

3-D rendering of scintillator bars
cross-section through barrel, 30-fold segmentation shown
from mechanical drawing package (PDF)
SiPM readout concept (PDF)
Sym 30 front 2annot.png
  • outer diameter of scattering chamber: 3.72″
    • radius = 4.7244 cm
  • inner diameter of CDC: 6.89″
    • radius = 8.7503 cm
  • scintillator thickness = 3 mm
  • for a nominal radius of 7.5 cm (roughly that in the Monte Carlo)
    • segmentation of 30
      • scintillator width = 15.7 mm
    • segmentation of 40
      • scintillator width = 11.8 mm