I have never used USRYIELD and I am trying to learn how to use it to record the angular divergence of the positrons coming out of a surface. I can do it with usrbdx too but I thought this will be a new thing.
The problem I am having is that FLAIR gui wont show me the REGION options. When I go to the editor mode and edit it, it reverts back. I upgraded the FLAIR to latestversion. Can someone please advice about the mistake I am making?
fast_positron_LINAC.flair (1.9 KB) fast_positron_LINAC.inp (1.6 KB)