High-quality electron beam generation in a proton-driven hollow plasma wakefield accelerator

Y. Li, G. Xia, K. V. Lotov, A. P. Sosedkin, K. Hanahoe, O. Mete-Apsimon

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Simulations of proton-driven plasma wakefield accelerators have demonstrated substantially higher accelerating gradients compared to conventional accelerators and the viability of accelerating electrons to the energy frontier in a single plasma stage. However, due to the strong intrinsic transverse fields varying both radially and in time, the witness beam quality is still far from suitable for practical application in future colliders. Here we demonstrate the efficient acceleration of electrons in proton-driven wakefields in a hollow plasma channel. In this regime, the witness bunch is positioned in the region with a strong accelerating field, free from plasma electrons and ions. We show that the electron beam carrying the charge of about 10% of 1 TeV proton driver charge can be accelerated to 0.6 TeV with a preserved normalized emittance in a single channel of 700 m. This high-quality and high-charge beam may pave the way for the development of future plasma-based energy frontier colliders.

Original languageEnglish
Article number101301
Number of pages8
JournalPhysical Review Accelerators and Beams
Volume20
Issue number10
DOIs
Publication statusPublished - 26 Oct 2017

Keywords

  • WAKE-FIELD ACCELERATION
  • HOSE INSTABILITY
  • LINEAR COLLIDER
  • CHANNEL
  • DYNAMICS
  • EQUILIBRIUM
  • SIMULATION
  • EFFICIENCY
  • PHYSICS
  • REGIME

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