Simulation of Smith-Purcell Terahertz radiation using a particle-in-cell code

J.T. Donohue (1) , J. Gardelle (2)

1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
2 CESTA - Centre d'études scientifiques et techniques d'Aquitaine

A simulation of the generation of Smith-Purcell (S-P) radiation at terahertz frequencies is performed using the two-dimensional particle-in-cell code MAGIC. The simulation supposes that a thin (but infinitely wide), mono-energetic electron beam passes over a diffraction grating. We simulate two configurations, one similar to the Dartmouth S-P FEL, with a low-energy continuous beam (we use an axial magnetic field to constrain the electrons to essentially one-dimensional motion). The other is similar to the recent MIT experiment that uses a pre-bunched 15 MeV beam.

Domaines: Physique des accélérateurs [physics.acc-ph]

J.T. Donohue, J. Gardelle. Simulation of Smith-Purcell Terahertz radiation using a particle-in-cell code. 27th International Free Electron Laser Conference, Aug 2005, Stanford, United States. pp.262-265, 2005. ⟨in2p3-00102985⟩