An analytic formalism for the emission of coherent transition radiation from an oblique finite thin metallic target screen

• DOI: 10.1016/j.nimb.2007.08.092
• Publication Date: 2007-09-19T11:35:18Z
• Authors: Daniel Sütterlin; Daniel Erni; Micha Dehler; Heinz Jäckel; Hans Sigg; Volker Schlott
• Keywords: Transition radiation; Formalism (music); Electromagnetic spectrum; Radiant intensity

Long-wavelength coherent transition radiation is commonly used in electron beam diagnostics for the determination of bunch lengths. Typically the spectrum of coherent transition radiation for a short bunch accelerator is settled in the low or sub-THz regime. Hereby, we present a theoretical model based on physical optical techniques in order to calculate emission characteristics for transition radiation, for both the radiating near-field and the far-field. This approach yields analytic solutions for the emitted electromagnetic fields without the need to solve integral equations. The simulated intensity distribution is compared with measurements showing good agreement.