RF plugging of multi-mirror machines

نویسندگان

چکیده

One of the main challenges fusion reactors based on magnetic mirrors is axial particle loss through cones. In multi-mirror (MM) systems, addressed by adding mirror cells each end central cell. Coulomb collisions in MM sections serve as retrapping mechanism for escaping particles. Unfortunately, confinement time this system only scales linearly with number and requires an unreasonably large to satisfy Lawson criterion. Here, it suggested reduce outflow applying a traveling radio frequency (RF) electric field that mainly targets particles outgoing cone. The Doppler shift compensates detuning RF from ion cyclotron resonance resulting selectivity effect. transition rates between different phase space populations are quantified via single-particle calculations then incorporated into semi-kinetic rate equations model system, including It found optimized parameters, can scale exponentially cells, orders magnitude better than similar same length but without plugging, criterion reasonable size.

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ژورنال

عنوان ژورنال: Physics of Plasmas

سال: 2023

ISSN: ['1070-664X', '1527-2419', '1089-7674']

DOI: https://doi.org/10.1063/5.0147925