This driver is very simple. It implements the TPC as several Ar rings inside the inner and outer Al TPC walls. Hits are the particle position and momentum and the total deposited energy when crossing a ring. The dead endplates are also introduced and filled with a material mix to simulated the TPC electronics.
The FCH are simulated as Si disks. The hits are the same information as the TPC.
Team working on the Geant4 simulation for Tracking Calorimeter: