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High Quality Electron Bunches Up to 1 GeV from Laser WakefieldAcceleration at LBNL.
C. B. Schroeder
K. Nakamura
J. Cary
C. G. R. Geddes
E. Michel
E. Esarey
W. P. Leemans
D. Bruhwiler
S. Hooker
A. J. Gonsalves
J. Van Tilborg
Cs Toth
B. Nagler
出版
Lawrence Berkeley National Laboratory
, 2006
URL
http://books.google.com.hk/books?id=GhDWjwEACAAJ&hl=&source=gbs_api
註釋
Experiments at the LOASIS laboratory of LBNL havedemonstrated production of 100 MeV to 1 GeV electron bunches with lowenergy spread and low divergence from laser wakefield acceleration. Theradiation pressure of a 10 TW laser pulse, guided over 10 diffractionranges by a few-mm long plasma density channel, was used to drive anintense plasma wave (wakefield), producing electron bunches with energieson the order of 100 MeV and acceleration gradients on the order of 100GV/m. Beam energy was increased from 100 MeV to 1 GeV by using a few-cmlong guiding channel at lower density, driven by a 40 TW laser, demonstrating the anticipated scaling to higher beam energies. Particlesimulations indicate that the low energy spread beams were produced fromself-trapped electrons through the interplay of trapping, loading, anddephasing. Other experiments and simulations are also underway to controlinjection of particles into the wake, and hence improve beam quality andstability further.
