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Question Does Geant4 simulate the number of secondary electron in the TPC gas  

Forum: Particles
Date: 16 Jan, 2013
From: Anna Wang <Anna Wang>

Hi,
   I want to simulate  primary ionization distance and the number of secondary electron produced by primary ionization per unit length when a charged particle passes through TPC gas. For TPC gas mixture 70% Ar+30%Isobutant,  at normal condition the average distance between primary ionizations for fast particle should be around 300 um.  

  But my simulation result is about 1 mm for 500MeV electron  when I set " G4ProductionCutsTable::GetProductionCutsTable()->SetEnergyRange(10*eV, 1*GeV)" in PhysicsList and "/testem/phys/addPhysics livermore". 

Now I suspect whether Geant4 could simulate the number of secondary electron in the TPC gas

 Looking forward to reply!

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