title: Compact electron acceleration and bunch compression in THz waveguides.
abstract: We numerically investigate the acceleration and bunch compression capabilities of 20 mJ, 0.6 THz-centered coherent terahertz pulses in optimized metallic dielectric-loaded cylindrical waveguides. In particular, we theoretically demonstrate the acceleration of 1.6 pC and 16 pC electron bunches from 1 MeV to 10 MeV over an interaction distance of 20mm, the compression of a 1.6 pC 1 MeV bunch from 100 fs to 2 fs (50 times compression) over an interaction distance of about 18mm, and the compression of a 1.6 pC 10 MeV bunch from 100 fs to 1.61 fs (62 times) over an interaction distance of 42 cm. The obtained results show the promise of coherent THz pulses in realizing compact electron acceleration and bunch compression schemes.
authors.affiliation: Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA. ljwong@mit.edu
authors.forename: Liang Jie
authors.initials: LJ
authors.lastname: Wong
authors.forename: Arya
authors.initials: A
authors.lastname: Fallahi
authors.forename: Franz X
authors.initials: FX
authors.lastname: Kärtner
mesh_terms: D003198:Computer Simulation; D004579:Electron Transport; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008670:Metals / Q000737:chemistry*; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D055053:Terahertz Radiation
chemical_list: D008670:Metals