There are some issues with the seeding in the tagger and recoil volumes that need to be investigated. However the current processors are rather confusing in terms of functionalities and implementations. Additionally, we should have a better handle on the technical efficiency.

--- Implementation changes
The TruthSeedProcessor should made clear that it provides both truth tracks and seeds. The way seed tracks are provided for recoil and tagger tracker will differ, so I think:

• Make 1 base class for the TruthSeedProcessor
• Make 2 derived classes for the Tagger and Recoil respectively.

--- Setup a truth track analysis
Check the Nhits distribution on the electron beam
Survival rate of electrons to the target surface
...