Numerical study of a multi-stage dielectric laser driven accelerator

Guoxing Xia, Yelong Wei (Corresponding), Jonathan Smith, Kieran Hanahoe, Oznur Mete, Steven P Jamison, Carsten Welsch

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In order to overcome the limits of commonly used radiofrequency accelerators, it is highly desirable to reduce the unit cost and increase the maximum achievable accelerating gradient. Dielectric laser-driven accelerators (DLAs) based on grating structures have received considerable attention due to maximum acceleration gradients of several GV/m and mature lithographic techniques for structure fabrication. This paper explores different spatial harmonics excited by an incident laser pulse and their interaction with the electron beam from the non-relativistic (25 keV) to the highly relativistic regime in double-grating silica structures. The achievable acceleration gradient for different spatial harmonics and the optimal compromise between maximum acceleration gradient and simplicity of structure fabrication are discussed. Finally, the suitability of a multi-stage DLA which would enable the acceleration of electrons from 25 keV to relativistic energies is discussed.
    Original languageEnglish
    Pages (from-to)50-57
    Number of pages8
    JournalPhysics Procedia
    Volume77
    DOIs
    Publication statusPublished - 2015

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