Low-emittance electron bunches from a laser-plasma accelerator measured using single-shot X-ray spectroscopy | Zendy

C. G. R. Geddes | Zendy; G. R. Plateau | Zendy; D. B. Thorn | Zendy; Min Chen | Zendy; C. Benedetti | Zendy; E. Esarey | Zendy; A. J. Gonsalves | Zendy; N. H. Matlis | Zendy; Kenta Nakamura | Zendy; S. G. Rykovanov | Zendy; C. B. Schroeder | Zendy; S. Shiraishi | Zendy; Thomas Sokollik | Zendy; J. van Tilborg | Zendy; Csaba Tóth | Zendy; S. Trotsenko | Zendy; T. S. Kim | Zendy; M. Battaglia | Zendy; Th. Stöhlker | Zendy; Wim Leemans | Zendy

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Low-emittance electron bunches from a laser-plasma accelerator measured using single-shot X-ray spectroscopy

Author(s) -

C. G. R. Geddes,

G. R. Plateau,

D. B. Thorn,

Min Chen,

C. Benedetti,

E. Esarey,

A. J. Gonsalves,

N. H. Matlis,

Kenta Nakamura,

S. G. Rykovanov,

C. B. Schroeder,

S. Shiraishi,

Thomas Sokollik,

J. van Tilborg,

Csaba Tóth,

S. Trotsenko,

T. S. Kim,

M. Battaglia,

Th. Stöhlker,

Wim Leemans

Publication year - 2012

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4773707

Subject(s) - betatron , thermal emittance , physics , radius , electron , atomic physics , plasma , particle accelerator , optics , laser , beam emittance , beam (structure) , nuclear physics , computer security , computer science

X-ray spectroscopy is used to obtain single-shot information on electron beam emittance in a low-energy-spread 0.5 GeV-class laser-plasma accelerator. Measurements of betatron radiation from 2 to 20 keV used a CCD and single-photon counting techniques. By matching x-ray spectra to betatron radiation models, the electron bunch radius inside the plasma is estimated to be ~0.1 μm. Combining this with simultaneous electron spectra, normalized transverse emittance is estimated to be as low as 0.1 mm mrad, consistent with three-dimensional particle-in-cell simulations. Correlations of the bunch radius with electron beam parameters are presented.

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