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This content will become publicly available on October 19, 2017

Title: High Efficiency Energy Extraction from a Relativistic Electron Beam in a Strongly Tapered Undulator

Here we present results of an experiment where, using a 200 GW CO2 laser seed, a 65 MeV electron beam was decelerated down to 35 MeV in a 54-cm-long strongly tapered helical magnetic undulator, extracting over 30% of the initial electron beam energy to coherent radiation. These results, supported by simulations of the radiation field evolution, demonstrate unparalleled electro-optical conversion efficiencies for a relativistic beam in an undulator field and represent an important step in the development of high peak and average power coherent radiation sources.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3]
  1. Univ. of California, Los Angeles, CA (United States). Particle Beam Physics Lab.
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Tel-Aviv Univ., Tel-Aviv (Israel). Dept. of Physical Electronics
Publication Date:
OSTI Identifier:
1341688
Report Number(s):
BNL--113418-2017-JA
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: KBCH139; KB0202011
Grant/Contract Number:
SC0012704; SC0009914; 2014-DN-077-ARI084-01
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); US DHS; U.S.-Israel Binational Science Foundation (BSF)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS