Multi-GeV energy gain in a plasma-wakefield accelerator |
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Authors: | Hogan M J Barnes C D Clayton C E Decker F J Deng S Emma P Huang C Iverson R H Johnson D K Joshi C Katsouleas T Krejcik P Lu W Marsh K A Mori W B Muggli P O'Connell C L Oz E Siemann R H Walz D |
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Institution: | Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, USA. |
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Abstract: | 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 x 10(10) electrons is compressed to 20 microm longitudinally and focused to a transverse spot size of 10 microm at the entrance of a 10 cm long column of lithium vapor with density 2.8 x 10(17) 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. |
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