CERN Accelerating science

Article
Title	Proposal of Laser-Driven Acceleration with Bessel Beam
Author(s)	Li, Dazhi ; Imasaki, Kazo
Affiliation	(ILT, 2-6 Yamada-oka, Suita, Osaka)
Publication	2004
In:	26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS13
Subject category	Accelerators and Storage Rings
Abstract	A possible approach of realizing multi-stage laser-driven acceleration with Bessel beam is explored. With using a set of annular slits, Bessel beam is truncated and structured into several separate sections during its transportation, leading to the possibility of accelerating electrons stage by stage. Bessel beam is regarded as diffraction-free beam, allowing a very long acceleration distance in contrast to the Gaussian beam. In this paper, the transportation characteristics of the structured Bessel beam is analyzed based on scalar diffraction theory, as well as the acceleration mechanism is demonstrated numerically.