Author: Cryan, J.
Paper Title Page
WEPAB072 PAX: A Plasma-Driven Attosecond X-Ray Source 2755
 
  • C. Emma, J. Cryan, M.J. Hogan, K. Larsen, J.P. MacArthur, A. Marinelli, G.R. White, X.L. Xu
    SLAC, Menlo Park, California, USA
  • A.C. Fisher, R.M. Hessami, P. Musumeci
    UCLA, Los Angeles, California, USA
  • R. Robles
    Stanford University, Stanford, California, USA
 
  Funding: Work supported by the U.S. Department of Energy under contract number DE-AC02-76SF00515. This work was also partially supported by DOE grant DESC0009914
Plasma ac­cel­er­a­tors can gen­er­ate ultra high bright­ness elec­tron beams which open the door to light sources with smaller phys­i­cal foot­print and prop­er­ties un­achiev­able with con­ven­tional ac­cel­er­a­tor tech­nol­ogy. In this work * we show that elec­tron beams from Plasma Wake­Field Ac­cel­er­a­tors (PWFAs) can gen­er­ate co­her­ent tun­able soft X-ray pulses with TW peak power and du­ra­tion of tens of at­tosec­onds in a me­ter-length un­du­la­tor. These X-ray pulses are an order of mag­ni­tude more pow­er­ful, shorter and can be pro­duced with bet­ter sta­bil­ity than state-of-the-art X-ray Free Elec­tron Lasers (XFELs). The X-ray emis­sion in this ap­proach is dri­ven by co­her­ent ra­di­a­tion from a pre-bunched, near Mega Am­pere (MA) cur­rent elec­tron beam of at­tosec­ond du­ra­tion rather than the SASE FEL process start­ing from noise. This ap­proach sig­nif­i­cantly re­laxes the re­stric­tive re­quire­ments on emit­tance, en­ergy spread, and point­ing sta­bil­ity which has thus far hin­dered the re­al­iza­tion of a high-gain FEL dri­ven by a plasma ac­cel­er­a­tor. We dis­cuss the ap­proach and progress to­wards the ex­per­i­men­tal re­al­iza­tion of this con­cept at the FACET-II ac­cel­er­a­tor fa­cil­ity.
* C. Emma, X. Xu, A. Fisher, J. P. MacArthur, J. Cryan, M. J. Hogan, P. Musumeci, G. White, A. Marinelli, "Terawatt attosecond X-ray source driven by a plasma accelerator", arXiv:2011.07163 (2020)
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB072  
About • paper received ※ 20 May 2021       paper accepted ※ 24 June 2021       issue date ※ 31 August 2021  
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