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Single-Shot Diagnosis of Electron Energy Evolution via Streaked Betatron X Rays in a Curved Laser Wakefield Accelerator

Journal Article · · Physical Review Letters
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  1. University of Michigan, Ann Arbor, MI (United States)
  2. Universit´e du Qu´ebec (INRS-EMT) (Canada)
  3. University of Alberta (Canada)
  4. Imperial College London (United Kingdom)
  5. Chinese Academy of Sciences, Beijing (China)
  6. Queen’s University Belfast (United Kingdom)
  7. Helmholtz Institut Jena (Germany); GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)
We report on an experimental observation of the streaking of betatron x rays in a curved laser wakefield accelerator. The streaking of the betatron x rays was realized by launching a laser pulse into a plasma with a transverse density gradient. By controlling the plasma density and the density gradient, we realized the steering of the laser driver, electron beam, and betatron x rays simultaneously. Furthermore, we observed an energy-angle correlation of the streaked betatron x rays and utilized it in diagnosing the electron acceleration process in a single-shot mode. Our work could also find applications in advanced control of laser beam and particle propagation. More importantly, the angular streaked betatron x ray has an intrinsic spatiotemporal correlation, which makes it a promising tool for single-shot pump-probe applications.
Research Organization:
University of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
European Union’s Horizon 2020 research and innovation programme; National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada; USDOE; USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
SC0020237; SC0021246; SC0022109
OSTI ID:
2525465
Alternate ID(s):
OSTI ID: 2473892
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 22 Vol. 132; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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