Plasma-based advanced accelerators at the Brookhaven Accelerator Test Facility |
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| Authors: | I V Pogorelsky M Babzien K P Kusche I V Pavlishin V Yakimenko C E Dilley S C Gottschalk W D Kimura T Katsouleas P Muggli E Kallos L C Steinhauer A Zigler N Andreev D B Cline F Zhou |
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| Institution: | (1) Brookhaven National Laboratory, Accelerator Test Facility, Upton, NY, USA;(2) STI Optronics, Inc., Bellevue, WA, USA;(3) University of Southern California, Los Angeles, CA, USA;(4) Redmond Plasma Physics Laboratory, University of Washington, Redmond, WA, USA;(5) Hebrew University, Jerusalem, Israel;(6) Institute of High Density Energy, Moscow, Russia;(7) University of California at Los Angeles, Los Angeles, CA, USA |
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| Abstract: | The Accelerator Test Facility at Brookhaven National Laboratory (BNL ATF) offers to its users a unique combination of research tools that include a high-brightness 70-MeV electron beam, a mid-infrared (λ = 10 μm) CO2 laser of terawatt power, and a capillary discharge as a plasma source. These cutting-edge technologies have enabled us to launch a new R&;D program at the forefronts of advanced accelerators and radiation sources. The main subjects that we are researching are innovative methods of producing wakes in a linear regime using plasma resonance with the electron microbunch train periodic to the laser’s wavelength and so-called “seeded” laser wakefield acceleration (LWFA) that is driven and probed by a combination of electron and laser beams. We describe the present status of the ATF experimental program, including simulations and preliminary experiments; in addition, we review previous ATF experiments that were the precursors to the present program. They encompass our demonstration of longitudinal-and transverse-field phasing inside the plasma wave, plasma channeling of intense CO2 laser beams, and the generation of e-beam microbunch trains by the inverse FEL technique. |
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