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

C. Arran; N. H. Matlis; R. Walczak; S. M. Hooker

doi:10.1103/PhysRevAccelBeams.21.103501

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

C. Arran, N. H. Matlis, R. Walczak, S. M. Hooker

Physics

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	103501
Number of pages	15
Journal	Physical Review Accelerators and Beams
Volume	21
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevAccelBeams.21.103501
Publication status	Published - 12 Oct 2018

Keywords

physics.acc-ph
physics.plasm-ph

Access to Document

10.1103/PhysRevAccelBeams.21.103501

Reconstructing nonlinear plasma wakefields using a generalized temporally encoded spectral shifting analysisFinal published version, 774 KBLicence: CC BY

https://ora.ox.ac.uk/objects/uuid:27ea95e4-65f6-4dda-b77e-3276cfe3e8c6Licence: CC BY

Cite this

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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. ",

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AU - Arran, C.

AU - Matlis, N. H.

AU - Walczak, R.

AU - Hooker, S. M.

PY - 2018/10/12

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