Simulations and Backgrounds

GEANT4 vs. Experimental Data

• Benchmarking of monte carlo simulation of bremsstrahlung from thick targets at radiotherapy energies

B. A. Faddegon, M. Asai, J. Perl, C. Ross, J. Sempau, J. Tinslay, and F. Salvat. Med. Phys. 35 (2008) 4308 media:MedPhys.35.4308.pdf

Relevant Cross Sections

• Photo-Nuclear Cross Sections:

1. ¹⁶O(γ,α)¹²C media:cs16Oga.txt (Eg (MeV), Cross Section (b))
2. ¹⁷O(γ,α)¹³C media:cs17Oga.txt
3. ¹⁸O(γ,α)¹⁴C media:cs18Oga.txt
4. ¹⁴N(γ,p)¹³C media:cs14Ngp.txt

• Neutron Elastic Cross Sections:

1. ¹⁶O(n,n) media:cs16Onn.txt (En (MeV), Cross Section (b))
2. ¹⁴N(n,n) media:cs14Nnn.txt

GEANT4 Geometry

• Bubble Chamber Step File (change .txt to .stp): media:BubbleChamber.txt