[Gate-users] Multi-System Coincidences

[Raylman, Raymond]

Hi-

I am trying to create an asymmetrical PET scanner by rotating two panel
detectors around the axis of the scanner.  Each detector has a different
radius of rotation, making it asymmetrical.

My first attempt at this simulation was to create two systems (using the
PETscanner system type), each one consisting of a single detector head.
The detectors are arranged so that they oppose each other, so coincidences
are physically possible.  When I run the simulation I get some singles,
but no coincidences. I have tried different schemes for attaching the
systems, but have had no luck.

So my questions are: Is it possible in GATE to produce coincidences from
two single detector systems (I know about TriCoinc, but that appears to be
for forming coincidences between a PET scanner and a separate detector)?
If so, any suggestions on how to make such a system?

Thanks,  Ray