Dear all,

I am running a LWFA simulation. My problem is to trace the trajectory of the special particles and then to calculate the radiation.

For example, I would like to trace the self-injected electrons in plasma bubble.   What I usually do this  is in post section for the dumped data as following :

1. specifying conditions for electron species, e.g. pz>1 and  |x|<x0

2. once the condition is satified by an electron, then find the corresponding electron ID

3. continously tracing the electron position by its ID untill the condition is broken.

How could I do this in PIConGPU or setup the ID for each particle? If I want further to calculate the radiation from these electrons, can I directly get the radiation data during the simulation?

All best regards,

Bifeng Lei