Photon fan beam shape simulation

[horvathd (Dávid Horváth)]

Dear Jittapan,

maybe this post will help you:

Asymmetrical flat cone beam

Hello Ihor, you have two options to do that: using a source routine, you can set all properties of the beam particles. See some of these relevant forum posts: link1, and link2 (for the older source routine). if you would rather not use the source routine, you can use the SPOTBEAM to create a beam spots with more fine-grained properties than you would in a BEAM card, including different divergences in x and y. You then have to use a SPECSOUR card to indicate that you have a single BEAMSPOT…

Cheers,
David