Distribution of material as fuction of eta and phi. ( .ps ) The averaged over azimuth thickness of EEMC is of 21.8 radiation length and of 1.07 absorption lenght.
The mat.kumac was used to shoot geantio. It was executed twice for EEMC+CAVE make cavegeo make ecalgeo
and for CAVE only. The EEMC backplate was filled with 'Air'. Next, histograms were subtracted ( pl.kumac )