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None Warning when I use enforced interaction biasing technique 

Forum: Event and Track Management
Date: 08 Sep, 2018
From: Ruirui <Ruirui>

Dear Geant4 experts,

I tried to simulate the antigrid shielding of the CT system. The anti-grids are very thin plates for blocking the scattered gamma ray. The thickness of these plates only is 80 microns. So it is hard to capture the interactions inside the plate. I tried to use the enforeced interaction biasing technique to enforce the interaction in the thin plates. I basically copy the idea from example of GB02. But I alawys find a weried warninig as below. Do not know why, anyone has some idea about this warning?

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : BIAS.GEN.19
      issued by :  G4BOptrForceCollisionTrackData::~G4BOptrForceCollisionTrackData()
Track deleted while under G4BOptrForceCollision biasing scheme of operator `ForceCollisionForgamma'. Will result in inconsistencies.
*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

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