Bremmstrahlung cross-section biasing in thin tungsten layer

_Geant4 Version:_3.11.1
_Operating System:_Ubuntu 24.04 LTS

Hello Geant4 Users

I would simulate the production of photon by Bremmstrahlung of a MiniX ray source provide by Amtek

The production of X ray is done by transmission through a 1 micrometre tungsten anode, followed by a 125 micron bertllium. Electrons energy is 50 KV.

I read a slide from a SLAC presnetation indicating the possibility to Artificially enhance/reduce cross section of a process :

  • Useful for studying Thin layer interactions

It was claimed that first we should use a Geant4 compilation with the activation of the biaising mode by seting the CMake variable GEANT4_USE_BIASING to ON during configuration.

is it correct ?

i also saw an exemple that is provided in documentation : Example GB01 : cross-section biasing

DID SOMEBODY EXPERIENCED SUCH A CASE