[Gate-users] error in SETLEdoseActor with gantry rotation?

[Luke Gilling]

Hello all,

I am modelling gantry rotation by rotating a phantom around coordinate (0,0,0). I am modelling a full 360 degree phantom rotation in 326 slices. When I use an unvoxelised phantom and regular dose actors this works fine. When I use a voxelised (.mhd) phantom and the SETLE dose actor @ 108 primaries I get this error at slice ~170:
"GateSETLEDoseActor.cc (l.365): Error in GateSETLEDoseActor: Intercept box failed"
Curiously, when I lower the primaries to 10, 100, 1000, 10000 etc. and run the simulation this error does not occur and the simulation runs to completeion.

The phantom volume is contained within a mother volume which is being rotated.

Why would I be getting an intercept error at a higher number of primaries?
Does anyone know what may be occurring here?

Kind regards,

Luke Gilling
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