Dear Fluka Experts,
I would like to create a 7m x 7m x 3m bunker for a cyclotron installation. The problem is that I don’t understand how to create this bunker. I first tried to do it by creating two rectangular parallelepipeds but, since I also have the cyclotron inside the parallelepipeds (therefire inside the bunker), it gave me errors because the geometries were touching. Any ideas on how to create this bunker without creating errors? Which bodies could I use? And how could I create the region of the thickness of the wall in order to say its material is portland concrete without having any errors?