Generation of High Brightness Electron Beams via Ionization Induced Injection by Transverse Colliding Lasers in a Beam-Driven Plasma Wakefield Accelerator

2); (2) University of California Los Angeles; (3) Laser Fusion Research Center; California; China; China); China Academy of Engineering Physics; C. Joshi (2); C. J. Zhang (1); C. X. Tang (1)

Generation of High Brightness Electron Beams via Ionization Induced Injection by Transverse Colliding Lasers in a Beam-Driven Plasma Wakefield Accelerator

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arxiv 1301.2950 v1 pith:TDJUEU65 submitted 2013-01-14 physics.acc-ph physics.plasm-ph

Generation of High Brightness Electron Beams via Ionization Induced Injection by Transverse Colliding Lasers in a Beam-Driven Plasma Wakefield Accelerator

F. Li (1) , J. F. Hua (1) , X. L. Xu (1) , C. J. Zhang (1) , L. X. Yan (1) , Y. C. Du (1) , W. H. Huang (1) , H. B. Cheng (1)

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C. X. Tang (1) W. Lu (1 2) C. Joshi (2) W. B. Mori (2) Y. Q. Gu (3) ((1) Key Laboratory of Particle Radiation Imaging of Ministry of Education Tsinghua University China (2) University of California Los Angeles Los Angeles California USA (3) Laser Fusion Research Center China Academy of Engineering Physics Mianyang Sichuan China)

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classification physics.acc-ph physics.plasm-ph

keywords wakeelectronemittanceinjectiontransversealongaxisbeam-driven

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The production of ultra-bright electron bunches using ionization injection triggered by two transversely colliding laser pulses inside a beam-driven plasma wake is examined via three-dimensional (3D) particle-in-cell (PIC) simulations. The relatively low intensity lasers are polarized along the wake axis and overlap with the wake for a very short time. The result is that the residual momentum of the ionized electrons in the transverse plane of the wake is much reduced and the injection is localized along the propagation axis of the wake. This minimizes both the initial 'thermal' emittance and the emittance growth due to transverse phase mixing. 3D PIC simulations show that ultra-short (around 8 fs) high-current (0.4 kA) electron bunches with a normalized emittance of 8.5 and 6 nm in the two planes respectively and a brightness greater than 1.7*10e19 A rad-2 m-2 can be obtained for realistic parameters.

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Cited by 1 Pith paper

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Wake Perturbations in Laser- and Beam-Driven Plasma Wakefield Accelerators: A Symmetry-Based Multipole Classification
physics.plasm-ph 2026-06 unverdicted novelty 6.0

The paper introduces a symmetry-based multipole classification (m=1 for centroid motion, m=2 for cross-plane emittance coupling) that unifies discussion of wake perturbations and beam-quality issues across LWFA and PWFA.