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Optical circular deflector with attosecond resolution for ultrashort electron beam

Zhen Zhang, Yingchao Du, Chuanxiang Tang, Yuantao Ding, and Zhirong Huang
Phys. Rev. Accel. Beams 20, 050702 – Published 25 May 2017

Abstract

A novel method using high-power laser as a circular deflector is proposed for the measurement of femtosecond (fs) and sub-fs electron beam. In the scheme, the electron beam interacts with a laser pulse operating in a radially polarized doughnut mode (TEM01*) in a helical undulator, generating angular kicks along the beam in two directions at the same time. The phase difference between the two angular kicks makes the beam form a ring after a propagation section with appropriate phase advance, which can reveal the current profile of the electron beam. Detailed theoretical analysis of the method and numerical results with reasonable parameters are both presented. It is shown that the temporal resolution can reach up to 100 attosecond, which is a significant improvement for the diagnostics of ultrashort electron beam.

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  • Received 16 January 2017

DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.050702

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Accelerators & Beams

Authors & Affiliations

Zhen Zhang*, Yingchao Du, and Chuanxiang Tang

  • Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Yuantao Ding and Zhirong Huang

  • SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA

  • *zhen-zhang12@mails.tsinghua.edu.cn

Article Text

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Issue

Vol. 20, Iss. 5 — May 2017

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