Hot spots and dark current in advanced plasma wakefield accelerators

Manahan, G. G.; Deng, A.; Karger, O.; Xi, Y.; Knetsch, A.; Litos, M.; Wittig, G.; Heinemann, T.; Smith, J.; Sheng, Z. M.; Jaroszynski, D. A.; Andonian, G.; Bruhwiler, D. L.; Rosenzweig, J. B.; Hidding, B.

doi:10.1103/PhysRevAccelBeams.19.011303

Title: Hot spots and dark current in advanced plasma wakefield accelerators

Journal Article · Fri Jan 29 00:00:00 EST 2016 · Physical Review Accelerators and Beams

DOI:https://doi.org/10.1103/PhysRevAccelBeams.19.011303· OSTI ID:1236514

Manahan, G. G.; Deng, A.; Karger, O.; Xi, Y.; Knetsch, A.; Litos, M.; Wittig, G.; Heinemann, T.; Smith, J.; Sheng, Z. M.; Jaroszynski, D. A.; Andonian, G.; Bruhwiler, D. L.; Rosenzweig, J. B.; Hidding, B.

Dark current can spoil witness bunch beam quality and acceleration efficiency in particle beam-driven plasma wakefield accelerators. In advanced schemes, hot spots generated by the drive beam or the wakefield can release electrons from higher ionization threshold levels in the plasma media. These electrons may be trapped inside the plasma wake and will then accumulate dark current, which is generally detrimental for a clear and unspoiled plasma acceleration process. Strategies for generating clean and robust, dark current free plasma wake cavities are devised and analyzed, and crucial aspects for experimental realization of such optimized scenarios are discussed.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States); RadiaSoft LLC, Boulder, CO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-05CH11231; FG02-07ER46272; FG03-92ER40693; SC0009533; N00014-06-1-0925; EP/J018171/1; 654148; 312453; SC0013855

OSTI ID:: 1236514

Alternate ID(s):: OSTI ID: 1236568; OSTI ID: 1392965

Journal Information:: Physical Review Accelerators and Beams, Vol. 19, Issue 1; ISSN 2469-9888

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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