Author: Corde, S.
Paper Title Page
WEYD3 Positron Acceleration in Linear, Moderately Non-Linear and Non-Linear Plasma Wakefields 560
 
  • G.J. Cao, E. Adli
    University of Oslo, Oslo, Norway
  • S. Corde
    LOA, Palaiseau, France
  • S.J. Gessner
    SLAC, Menlo Park, California, USA
 
  Ac­cel­er­at­ing par­ti­cles to high en­er­gies with high ef­fi­ciency and beam qual­ity is cru­cial in de­vel­op­ing ac­cel­er­a­tor tech­nolo­gies. The plasma ac­cel­er­a­tion tech­nique, pro­vid­ing un­prece­dented high gra­di­ents, is con­sid­ered as a promis­ing fu­ture tech­nol­ogy. While im­por­tant progress has been made in plasma-based elec­tron ac­cel­er­a­tion in re­cent years, iden­ti­fy­ing a re­li­able ac­cel­er­a­tion tech­nique for the positron coun­ter­part would pave the way to a lin­ear e+e col­lider for high-en­ergy physics ap­pli­ca­tions. In this work, we show fur­ther stud­ies of positron beam qual­ity in mod­er­ately non-lin­ear (MNL)* plasma wake­fields. With a positron bunch of ini­tial en­ergy 1 GeV, emit­tance preser­va­tion can be achieved in op­ti­mised sce­nar­ios at 2.38 mm’mrad. In par­al­lel, asym­met­ric beam col­li­sions at the in­ter­ac­tion point (IP) are stud­ied to eval­u­ate the cur­rent lu­mi­nos­ity reach and pro­vide in­sight to im­prove­ments re­quired for positron ac­cel­er­a­tion in plasma. It is nec­es­sary to scale down the emit­tance of the positron bunch. In the MNL regime, a positron beam with 238 ’m’mrad level emit­tance im­plies com­pro­mise in charge or ne­ces­sity for ul­tra-short bunches.
* "Efficiency and beam quality for positron acceleration in loaded plasma wakefields",C. S. Hue, G. J. Cao, et.al Phys. Rev. Research 3, 043063
 
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DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEYD3  
About • Received ※ 01 August 2022 — Revised ※ 09 August 2022 — Accepted ※ 10 August 2022 — Issue date ※ 24 August 2022
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