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Reconstructing nonlinear plasma wakefields using a generalized temporally encoded spectral shifting analysis

Abstract:
We generalize the temporally encoded spectral shifting (TESS) analysis for measuring plasma wakefields using spectral interferometry to dissimilar probe pulses of arbitrary spectral profile and to measuring nonlinear wakefields. We demonstrate that the Gaussian approximation used up until now results in a substantial miscalculation of the wakefield amplitude, by a factor of up to two. A method to accurately measure higher amplitude quasilinear and nonlinear wakefields is suggested, using an extension to the TESS procedure, and we place some limits on its accuracy in these regimes. These extensions and improvements to the analysis demonstrate its potential for rapid and accurate on-shot diagnosis of plasma wakefields, even at low plasma densities.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevAccelBeams.21.103501

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Oxford college:
St John's College
Role:
Author
ORCID:
0000-0002-8644-8118
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Sub department:
Particle Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Sub department:
Atomic & Laser Physics
Oxford college:
Merton College
Role:
Author
ORCID:
0000-0002-1243-520X


Publisher:
American Physical Society
Journal:
Physical Review Accelerators and Beams More from this journal
Volume:
21
Pages:
103501
Publication date:
2018-10-12
Acceptance date:
2018-10-01
DOI:
EISSN:
2469-9888


Keywords:
Pubs id:
pubs:928752
UUID:
uuid:27ea95e4-65f6-4dda-b77e-3276cfe3e8c6
Local pid:
pubs:928752
Source identifiers:
928752
Deposit date:
2018-10-17

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