A waveguide-based high efficiency superradiant FEL operating in the THz regime

P. Musumeci, A. Fisher, B. van der Geer, E. A. Nanni, E. C. Snively, A. Gover

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper we describe a novel self-consistent 3D simulation approach for a waveguide FEL operating in the zero-slippage regime to generate high power THz radiation. In this interaction regime, the phase and group velocity of the radiation are matched to the relativistic beam traveling in the undulator achieving long interaction lengths. Our numerical approach is based on expanding the existing 3D particle tracking code GPT (General Particle Tracer) to follow the interaction of the particles in the beam with the electromagnetic field modes of the waveguide. We present two separate studies: one for a case which was benchmarked with experimental results and another one for a test case where, using a longer undulator and larger bunch charge, a sizable fraction of the input beam energy can be extracted and converted to THz radiation. The model presented here is an important step in the development of the zero-slippage FEL scheme as a source for high average and peak power THz radiation.

Original languageEnglish
Title of host publicationProceedings of the 39th International Free-Electron Laser Conference, FEL 2019
PublisherJACoW Publishing
Pages127-130
Number of pages4
ISBN (Electronic)9783954502103
DOIs
StatePublished - 2019
Event39th International Free-Electron Laser Conference, FEL 2019 - Hamburg, Germany
Duration: 26 Aug 201930 Aug 2019

Publication series

NameProceedings of the 39th International Free-Electron Laser Conference, FEL 2019

Conference

Conference39th International Free-Electron Laser Conference, FEL 2019
Country/TerritoryGermany
CityHamburg
Period26/08/1930/08/19

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