Document Type
Article
Abstract
This paper presents expected THz radiation spectra emitted by micro-bunched electron beams produced using a slit-mask placed within a magnetic chicane in the FAST (Fermilab Accelerator Science and Technology) electron injector at Fermilab. Our purpose is to generate tunable narrow-band THz radiation with a simple scheme in a conventional photo-injector. Using the slit-mask in the chicane, we create a longitudinally micro-bunched beam after the chicane by transversely slicing an energy chirped electron bunch at a location with horizontal dispersion. In this paper, we discuss the theory related to the micro-bunched beam structure, the beam optics, the simulation results of the micro-bunched beam and the bunching factors. Energy radiated at THz frequencies from two sources: coherent transition radiation and from a wiggler is calculated and compared. We also discuss the results of a simple method to observe the micro-bunching on a transverse screen monitor using a skew quadrupole placed in the chicane.
DOI
10.1016/j.nima.2018.10.219
Publication Date
11-5-2018
Recommended Citation
Nuclear Inst. and Methods in Physics Research, A 916 (2019) 195-203
Original Citation
Nuclear Inst. and Methods in Physics Research, A 916 (2019) 195-203
Department
Department of Physics
Legacy Department
Department of Physics
Sponsorship
US Department of Energy
Language
eng
Publisher
Elsevier
