x-Rays Transport

Dear Fluka experts
I want to perform a simulation of x-rays (~100 keV) beam incident on a
simple Cu thin/thick target;
but my attempts failed to attain a non-zero output from the code, under the
following conditions:
source = a monodirectional "PHOTON" annular beam having nominal energy of
~100keV
geometry = a simple rcc
score = surface and track estimate of "PHOTON"s flux
misc = turn EMF. It seems that x-rays don't transport
at all.

-- 
Ali Koosha