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


    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
    Publication statusPublished - 2015


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