TransitionRadiation : Transtion Radiation
Section author: Finn-Ole Carstens <f.carstens (at) hzdr.de>
This example simulates the coherent and incoherent transition radiation created by an electron bunch in-situ. The implemented transition radiation follows the studies from [Schroeder2004] and [Downer2018]. The transition radiation is computed for an infinitely large interface perpendicular to the y-axis of the simulation.
The electron bunch in this setup is moving with a 45° angle in the x-y plane with a Lorentz-factor of $gamma = 100$. The bunch has a Gaussian distribution with $sigma_y = 3.0 mu m$. The results can be interpreted with the according python script lib/python/picongpu/plugins/plot_mpl/transition_radiation_visualizer.py.
References
Schroeder, C. B. and Esarey, E. and van Tilborg, J. and Leemans, W. P. Theory of coherent transition radiation generated at a plasma-vacuum interface, American Physical Society(2004), https://link.aps.org/doi/10.1103/PhysRevE.69.016501
Downer, M. C. and Zgadzaj, R. and Debus, A. and Schramm, U. and Kaluza, M. C. Diagnostics for plasma-based electron accelerators, American Physical Society(2018), https://link.aps.org/doi/10.1103/RevModPhys.90.035002