Multiplicity of the detected photons vs. hit position (X-axis) of the track in the most inner bar for different EV material.
![](/~rdzhigad/data/gluex/photons/photons_material.png)
![](/~rdzhigad/data/gallery/gluex/gluexdirc_2b.png)
Multiplicity of the detected photons vs. hit position (X-axis) of the track in the most inner bar for different EV material.