Hot spots and dark current in advanced plasma wakefield accelerators

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 el...

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Published inPhysical review. Accelerators and beams Vol. 19; no. 1; p. 011303
Main Authors 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.
Format Journal Article
LanguageEnglish
Published College Park American Physical Society 29.01.2016
Subjects
Dark current
Electrons
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
PARTICLE ACCELERATORS
Particle beams
Plasma
Plasma acceleration
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Summary: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.
Bibliography:AC02-05CH11231; FG02-07ER46272; FG03-92ER40693; SC0009533; N00014-06-1-0925; EP/J018171/1; 654148; 312453; SC0013855
USDOE Office of Science (SC), High Energy Physics (HEP)
ISSN:2469-9888
2469-9888
DOI:10.1103/PhysRevAccelBeams.19.011303