Transverse emittance and current of multi-GeV trapped electrons in a plasma wakefield accelerator

N. Kirby, I. Blumenfeld, C. E. Clayton, F. J. Decker, M. J. Hogan, C. Huang, R. Ischebeck, R. H. Iverson, C. Joshi, T. Katsouleas, W. Lu, K. A. Marsh, S. F. Martins, W. B. Mori, P. Muggli, E. Oz, R. H. Siemann, D. R. Walz, M. Zhou

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Abstract

Multi-GeV trapped electron bunches in a plasma wakefield accelerator (PWFA) are observed with normalized transverse emittance divided by peak current, εN,x/It, below the level of 0.2μm/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 εN,x/It result from multi-GeV trapped electron bunches with emittances of a fewμm and multi-kA peak currents.

Original languageEnglish (US)
Article number051302
JournalPhysical Review Special Topics - Accelerators and Beams
Volume12
Issue number5
DOIs
StatePublished - May 14 2009

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

Cite this

Kirby, N., Blumenfeld, I., Clayton, C. E., Decker, F. J., Hogan, M. J., Huang, C., Ischebeck, R., Iverson, R. H., Joshi, C., Katsouleas, T., Lu, W., Marsh, K. A., Martins, S. F., Mori, W. B., Muggli, P., Oz, E., Siemann, R. H., Walz, D. R., & Zhou, M. (2009). Transverse emittance and current of multi-GeV trapped electrons in a plasma wakefield accelerator. Physical Review Special Topics - Accelerators and Beams, 12(5), [051302]. https://doi.org/10.1103/PhysRevSTAB.12.051302