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Influence of backstreaming ions on spot size of 2 MeV electron beam

Published online by Cambridge University Press:  10 April 2019

Yury Trunev*
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Dmitry Skovorodin
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Vitaly Astrelin
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Valerii Danilov
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Alexander Burdakov
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Victor Kurkuchekov
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Sergey Popov
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Stanislav Sinitsky
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
Vladimir Tarakanov
Affiliation:
Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow 125412, Russia National Research Nuclear University “MEPhI”, Moscow 115409, Russia
Magomedriza Atlukhanov
Affiliation:
Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia
*
Author for correspondence: Yury Trunev, Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), 11, Acad. Lavrentieva Pr., Novosibirsk, 630090, Russia. E-mail: [email protected]; [email protected]

Abstract

Influence of backstreaming ions from the target on spot size of focused 2 MeV electron beam was considered. The 2D version of the particle-in-cell code KARAT was used to study the formation of the ions stream and dynamics of the electron beam. It was shown that light species emitted from the target can disrupt the beam. The emission of low-ionized states of tantalum cannot disrupt the beam during about 30 ns or longer. A few non-invasive techniques of mitigation of the beam disruption were considered. Final magnetic lens with fast variation of magnetic field of several hundred Ampere-turns per nanosecond is capable to stabilize initial spot size of the compressed beam at the target.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2019 

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