Message: How to calculate exposure times of CDG source which obey cosine-law? Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None How to calculate exposure times of CDG source which obey cosine-law? 

Forum: Particles
Date: 16 Aug, 2006
From: Wes Tung <westung>

I have the differential spectra of COSMIC diffuse gamma-ray now .

f(e)=112*E^{-2.3}.

GPS Command Example 7:

    /gps/particle gamma
    /gps/pos/type Surface
    /gps/pos/shape Cylinder
    /gps/pos/centre 2. 2. 2. cm
    /gps/pos/radius 2.5 cm
    /gps/pos/halfz 5. cm
    /gps/ang/type cos
    /gps/ene/type Cdg
    /gps/ene/min 20. keV
    /gps/ene/max 1. MeV
    /gps/ene/calculate

shows one example to generate CDG source. Then How can I calculate out the

effective exposure times giving the number of events?

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

 Add Message Add Message
to: "How to calculate exposure times of CDG source which obey cosine-law?"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]