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Question Energy Deposition 

Forum: Event and Track Management
Date: 24 Nov, 2015
From: Areg <Areg>

Hello everyone,

I am trying to understand how geant4 calculates the total deposited energy in a particular step. I am printing out the step's energy information, and trying to figure out the meaning of G4Track::GetTotalEnergyDeposit(). To do this, I calculate the change in kinetic energy between pre-step and post-step, and compare it to energy deposit. I find that in most cases -- but not always(!!) -- the two disagree.

Unfortunately I can't find anything in Geant4's documentation on G4Track::GetTotalEnergyDeposit()...

Can someone explain the following, or guide me to the relevant documentation?

Below is a table of my results, to illustrate what I mean. For particle ID: 11=e-,22=gamma,2112=neutron,2212=proton.

(E_pre-E_post)(MeV) E_dep(MeV) ParticlePDG_id

----------------------------------

0.805901 8.99e-06 22

0.00109695 0.00029101 22

0.267185 1.361e-05 22

0.00798453 0.00029101 22

3.7369 1.756e-05 22

2.92031e-05 2.92636e-05 2112

5.87537e-06 5.88414e-06 2112

1.87573 0 2112

0.0812705 0 2112

0.000246409 0.000246409 2212

0.000119122 0.000119122 2212

0.00115092 0.00115092 2212

0.244781 0.244781 11

0.233412 0.233412 11

0.058573 0.058573 11

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1 None: Re: Energy Deposition   (Makoto Asai - 24 Nov, 2015)
1 None: Re: Energy Deposition   (Areg - 24 Nov, 2015)
1 None: Re: Energy Deposition   (Makoto Asai - 24 Nov, 2015)
2 Feedback: Re: Energy Deposition   (Gumplinger Peter - 24 Nov, 2015)
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