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Question Understanding G4PSFlatSurfFlux output 

Keywords: G4PSFlatSurfFlux , Primitive Scorer
Forum: Hits, Digitization and Pileup
Date: 06 Feb, 2008
From: Axanka <gruenwald@physik.rwth-aachen.de>

Hello,
I'm having a tough time understanding the output of my 
G4PSFlatSurfaceFlux scorer. The current state of my 
simulation is fairly simple: a single proton is transported 
through an absorber and a detector. The only process envoked 
is AddTransportation(); 20 events are simulated; the particle 
impinges the detector surface at an angle of 90 degrees and 
the weight of the proton is 1. The scorer G4PSTrackCounter 
outputs a total of 20 tracks.
Now, according to the formula in the Book for Application
Developers on page 122, the FlatSurfaceFlux should be 

             Flux = 20*(W/cos(t)/A)

So, the weight is 1 and cos(0deg) = 1. Therefore the flux 
should be:
             Flux = 20*(1/1/A)

The flux output by my simulation is 5.555555555555553e-05

The -Z surface area of my detector is 30cm X 30cm = 90000*mm2

By multiplying the flux with the surface area I expect to 
get the number of tracks. This calculation does not add 
up though.
The question is: WHY?

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1 None: Re: Understanding G4PSFlatSurfFlux output   (Yuri Burmistenko - 05 May, 2008)
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