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Title: 9 GeV energy gain in a beam-driven plasma wakefield accelerator

An electron beam has gained a maximum energy of 9 GeV per particle in a 1.3 m-long electron beam-driven plasma wakefield accelerator. The amount of charge accelerated in the spectral peak was 28.3 pC, and the root-mean-square energy spread was 5.0%. The mean accelerated charge and energy gain per particle of the 215 shot data set was 115 pC and 5.3 GeV, respectively, corresponding to an acceleration gradient of 4.0 GeV m-1 at the spectral peak. Moreover, the mean energy spread of the data set was 5.1%. Our results are consistent with the extrapolation of the previously reported energy gain results using a shorter, 36 cm-long plasma source to within 10%, evincing a non-evolving wake structure that can propagate distances of over a meter in length. Wake-loading effects were evident in the data through strong dependencies observed between various spectral properties and the amount of accelerated charge.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [4] ;  [3] ;  [1] ;  [1] ;  [1] ;  [1] ;  [3] ;  [5] ;  [3] ;  [3] ;  [1] ;  [3] ;  [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of Oslo (Norway)
  3. Univ. of California, Los Angeles, CA (United States)
  4. Univ. of Paris-Saclay, Palaiseau (France)
  5. Tsinghua Univ., Beijing (China)
Publication Date:
OSTI Identifier:
1249057
Grant/Contract Number:
AC02-76SF00515; DE-SC0010064
Type:
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 58; Journal Issue: 3; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Research Org:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS