|Message: Slow tracking in voxelized phantom||Not Logged In (login)|
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my specific application is mammography and I am trying to simulate a voxelized phantom (over 5 10^6 voxels) in a typical mammography setup. As expected, tracking of X-ray photons is incredibly slow in this phantom.
I have read that this problem is due to the fact that when particles are close to a boundary it has to recalculate the path length with high accuracy, therefore, for a voxelized phantom, it is recalculating the path length continuously.
I am aware that this problem is being investigated for applications using GATE by checking if the next voxel is of the same material, thus the boundary is not considered, but I haven't found anything for Geant4.
Can anybody hint me where to look at?
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