Dear Expert,
I am working on a design where I aim to detect photons using USRBIN. When I run the simulation and check the USRBIN spectrum in the geometry section, the result shows photons distributed across the entire USRBIN area, as illustrated in the attached image.
However, given that the photon source is positioned at -40 cm and the detector starts at 0 cm, I was expecting to observe a narrow beam of photons initially, followed by the interaction with the detector. The current result, showing photons throughout the USRBIN, makes me question whether the simulation is working as expected.
Could you kindly advise if this outcome is correct or if there might be an issue? Your guidance would help me proceed confidently. Thank you for your time and assistance.
Regards
Shubham
b_canon_all_geometry.flair (8.4 KB)
b_canon_all_geometry.inp (6.3 KB)
