Work

Inverse Cherenkov dielectric laser accelerator with alternating phase focusing for subrelativistic particles

Year: 2024

Type: article

Abstract: In this paper, we propose a dielectric laser acceleration scheme based on the inverse Cherenkov effect, which uses the principle of alternating phase focusing to accelerate, confine, and bunch the subrelativistic electron beam over an extended distance. In this scheme, the reference electron is always synchronized with the acceleration wave and is thus continuously accelerated. Electrons around it are alternately subjected to focusing and defocusing forces by alternately jumping its phase. Optimizing the focusing period can achieve stable beam confinement. Simulations show that a 100 keV electron bunch can be coherently accelerated with the average acceleration gradient of 220.8 MV / m , and it can travel nearly 200 μ m without loss in a channel only 500 nm wide. This approach is scalable, potentially enabling the development of millimeter-scale MeV particle accelerators for ground-breaking use in medical, scientific, and materials research. Published by the American Physical Society 2024

Source: Physical Review Accelerators and Beams

DOI: 10.1103/physrevaccelbeams.27.110401

Authors: Liwen Zhang, Hongliang Xu, Weihao Liu

Institutions: University of Science and Technology of China, National Synchrotron Radiation Laboratory, Nanjing University of Aeronautics and Astronautics

Language: English

Topic: Particle Accelerators and Free-Electron Lasers

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, National Key Laboratory Foundation of China

Awards: G3682844472, G5398821826, G938060011