Petawatt-Laser-Driven Wakefield Acceleration Of Electrons To 2 Gev In 10(17)Cm(-3) Plasma

Date
2012-06
Authors
Wang, X.
Zgadzaj, R.
Fazel, N.
Yi, S. A.
Zhang, X.
Henderson, W.
Chang, Y. Y.
Korzekwa, R.
Tsai, H. E.
Pai, C. H.
Journal Title
Journal ISSN
Volume Title
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Abstract

Electron self-injection into a laser-plasma accelerator (LPA) driven by the Texas Petawatt (TPW) laser is reported at plasma densities 1.7 - 6.2 x 10(17) cm(-3). Energy and charge of the electron beam, ranging from 0.5 GeV to 2 GeV and tens to hundreds of pC, respectively, depended strongly on laser beam quality and plasma density. Angular beam divergence was consistently around 0.5 mrad (FWHM), while shot-to-shot pointing fluctuations were limited to +/- 1.4 mrad rms. Betatron x-rays with tens of keV photon energy are also clearly observed.

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Citation
X. Wang, R. Zgadzaj, N. Fazel, S. A. Yi, X. Zhang, W. Henderson, Y.-Y. Chang, R. Korzekwa, H.-E. Tsai, C.-H. Pai, Z. Li, H. Quevedo, G. Dyer, E. Gaul, M. Martinez, A. Bernstein, T. Borger, M. Spinks, M. Donovan, S. Y. Kalmykov, V. Khudik, G. Shvets, T. Ditmire, and M. C. Downer. AIP Conference Proceedings 1507, 341 (Jun., 2012); doi: 10.1063/1.4773719