Measured Emittance Dependence on the Injection Method in Laser Plasma Accelerators

Barber, S. K.; van Tilborg, J.; Schroeder, C. B.; Lehe, R.; Tsai, H. -E.; Swanson, K. K.; Steinke, S.; Nakamura, K.; Geddes, C. G.  R.; Benedetti, C.; Esarey, E.; Leemans, W. P.

doi:10.1103/PhysRevLett.119.104801

Title: Measured Emittance Dependence on the Injection Method in Laser Plasma Accelerators

Journal Article · Fri Sep 01 00:00:00 EDT 2017 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.119.104801· OSTI ID:1440953

Barber, S. K. ^[1]; van Tilborg, J. ^[1]; Schroeder, C. B. ^[1]; Lehe, R. ^[1]; Tsai, H. -E. ^[1]; Swanson, K. K. ^[2]; Steinke, S. ^[1]; Nakamura, K. ^[1]; Geddes, C. G. R. ^[1]; Benedetti, C. ^[1]; Esarey, E. ^[1]; Leemans, W. P. ^[2]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Physics

Here, single-shot, charge-dependent emittance measurements of electron beams generated by a laser plasma accelerator (LPA) reveal that shock-induced density down-ramp injection produces beams with normalized emittances a factor of 2 smaller than beams produced via ionization injection. Such a comparison is made possible by the tunable LPA setup, which allows electron beams with nearly identical central energy and peak spectral charge density to be produced using the two distinct injection mechanisms. Parametric measurements of this type are essential for the development of LPA-based applications which ultimately require high charge density and low emittance.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1440953

Alternate ID(s):: OSTI ID: 1378428

Journal Information:: Physical Review Letters, Vol. 119, Issue 10; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 35 works

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