Difference between revisions of "Some specifications on PMTs"

From GlueXWiki
Jump to: navigation, search
Line 6: Line 6:
  
 
''' Counter rates (according to the latest Dan's design) '''
 
''' Counter rates (according to the latest Dan's design) '''
# 1.1 &mu; A electron current, <math>10^{-4} X_{0}</math> radiator (corresponds to the photon flux of <math>5x10^{7}</math> phot/sec.
+
# 1.1 &mu; A electron current, <math>10^{-4} X_{0}</math> radiator  
 +
(corresponds to the photon flux of <math>5x10^{7}</math> phot/sec in the cohrent peak region)

Revision as of 15:13, 14 September 2012

Light yield estimates

  1. 5 mm thick scintillators
  2. 10000 initial photons per tagged electron
    • assume that 2000 photons are collected (20 % light collection efficiency)
    • 400 p.e. (assuming 20% quantum efficiency)

Counter rates (according to the latest Dan's design)

  1. 1.1 μ A electron current, 10^{{-4}}X_{{0}} radiator

(corresponds to the photon flux of 5x10^{{7}} phot/sec in the cohrent peak region)