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          Institute: MPI für Plasmaphysik     Collection: Articles, Books, Inbooks     Display Documents

ID: 57311.0, MPI für Plasmaphysik / Articles, Books, Inbooks
The effect of magnetic field modification on heavy ion movement in advanced stellarators and helical devices
Authors:Shishkin, A.; Shyshkin, O.; Wobig, H.; Igitkhanov, Y.; Motojima, O.; Morimoto, S.; Yamazaki, K.; Inagaki, S.
Research Context:Plasma-Surface Interactions in Controlled Fusion Devices (PSI-15), Gifu, 2002-05-26 to 2002-05-31
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Journal of Nuclear Materials
Journal Abbrev.:J. Nucl. Mater.
Start Page:1192
End Page:1196
Copyright:Copyright © 2003 Elsevier Science B.V. All rights reserved
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Two new physics mechanisms that can be used to shield and exhaust the impurity ions in the toroidal
magnetic traps with the rotational transform from the external current coils are considered here. One
of them is connected with the stochastic magnetic fields, which can be the barrier for the penetration
of impurity ions from the outside in the confinement volume. This way is appropriate in advanced
stellarator systems such as the Wendelstein 7 X and the Helias Reactor. Another approach is a
possibility to use the process of transition of particles with the blocked trajectories into the helical
trapped particles. The particles that should be removed from the center of the confinement volume
can go away along the transit trajectories. Such mechanism can be used in the helical device with the
noticeable fraction of the transit particles, particularly the large helical device.
Free Keywords:Impurity ions; Stochastic magnetic fields; Loss cone losses; Helical device; Advanced stellarator
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/E3
External Affiliations:Institute of Plasma Physics, National Science Center `Kharkov Institute of Physics and Technology', Kharkov 108, Ukraine; Kharkov `V.N. Karazin' National University, Kharkov 77, Ukraine; National Institute for Fusion Science, Toki, Gifu 509-5292, Japan; Kanazawa Institute of Technology, Nonoichi, Ishikawa 921-8501, Japan
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