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In our workgroup we are working with a thin silicon foil with a thickness of 10Ám. It is possible that the foil proves useful as a passive scattering element, like it is already used in proton therapy and carbon ion therapy. Such a filter is known as a ridge filter.
As a first step I would like to evaluate, in what way the foil modifies the depth dose distribution and lateral distribution. For this first step I chose a simplified simulation set up.
Simulation set up:
Plane source Carbon Ion/Proton Energy: 80-160MeV
| |Silicon Foil 10Ám thickness
| |Water target/voxelized Phantom
I am unsure as to what PhysicList to choose for carbon ion and protons in an energy range of 80-160MeV. Another point is that the foil is rather thin and I wonder if it is necessary to reduce the step size or modify the productions cuts. What would you recommend from your experience?
I would very much appreciate any comments and help!
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