Phys. Rev. Lett. 95, 054802 (2005) [4 pages]Multi-GeV Energy Gain in a Plasma-Wakefield AcceleratorReceived 25 March 2005; published 28 July 2005 A plasma-wakefield accelerator has accelerated particles by over 2.7 GeV in a 10 cm long plasma module. A 28.5 GeV electron beam with 1.8×1010 electrons is compressed to 20 μm longitudinally and focused to a transverse spot size of 10 μm at the entrance of a 10 cm long column of lithium vapor with density 2.8×1017 atoms/cm3. The electron bunch fully ionizes the lithium vapor to create a plasma and then expels the plasma electrons. These electrons return one-half plasma period later driving a large amplitude plasma wake that in turn accelerates particles in the back of the bunch by more than 2.7 GeV. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.054802
DOI:
10.1103/PhysRevLett.95.054802
PACS:
41.75.Ht, 41.75.Lx, 52.25.Jm, 52.40.Mj
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