Transverse Emittance and Current of Multi-GeV Trapped Electrons in a Plasma Wakefield Accelerator

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Multi-GeV trapped electron bunches in a plasma wakefield accelerator (PWFA) are observed with normalized transverse emittance divided by peak current, {epsilon}{sub N,x}/I{sub t}, below the level of 0.2 {micro}m/kA. A theoretical model of the trapped electron emittance, developed here, indicates that emittance scales inversely with the square root of the plasma density in the nonlinear 'bubble' regime of the PWFA. This model and simulations indicate that the observed values of {epsilon}{sub N,x}/I{sub t} result from multi-GeV trapped electron bunches with emittances of a few {micro}m and multi-kA peak currents.

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5 pages

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Kirby, N.; Blumenfeld, I.; /SLAC; Clayton, C.E.; /UCLA; Decker, F.J. et al. October 17, 2009.

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Multi-GeV trapped electron bunches in a plasma wakefield accelerator (PWFA) are observed with normalized transverse emittance divided by peak current, {epsilon}{sub N,x}/I{sub t}, below the level of 0.2 {micro}m/kA. A theoretical model of the trapped electron emittance, developed here, indicates that emittance scales inversely with the square root of the plasma density in the nonlinear 'bubble' regime of the PWFA. This model and simulations indicate that the observed values of {epsilon}{sub N,x}/I{sub t} result from multi-GeV trapped electron bunches with emittances of a few {micro}m and multi-kA peak currents.

Physical Description

5 pages

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  • Journal Name: Phys.Rev.ST Accel.Beams 12:051302,2009

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  • Report No.: SLAC-PUB-13752
  • Grant Number: AC02-76SF00515
  • DOI: 10.1103/PhysRevSTAB.12.051302 | External Link
  • Office of Scientific & Technical Information Report Number: 968530
  • Archival Resource Key: ark:/67531/metadc932743

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • October 17, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 15, 2016, 3:34 p.m.

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Kirby, N.; Blumenfeld, I.; /SLAC; Clayton, C.E.; /UCLA; Decker, F.J. et al. Transverse Emittance and Current of Multi-GeV Trapped Electrons in a Plasma Wakefield Accelerator, article, October 17, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc932743/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.