Intersection of voxel geometry with regular bodies

Dear Fluka experts,

In my research I faced with a problem - I need to move steel cylinder as close as possible to the throat of a voxel phantom (picture 1). The problem is that steel cylinder intersects voxels. In regular geometry I just subtract one region from another. But for VOXEL card there is no region from which I can subtract cylinder body by using regular expressions. Is there any method to subtract regular bodies from voxel geometry?



Unfortunately this is not possible with the present voxel implementation of fluka.
Currently you cannot make intersection/subtraction operations between the voxel body and other bodies (except to remove the VOXEL from another body)