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Spontaneous Break of up–down Symmetry in a Symmetric Double-Null Divertor Configuration

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Abstract

A possibility of up–down asymmetry of the profiles of the edge plasma parameters in a symmetric double-null divertor configuration in the case of impurity seeding is found by computational modeling. The physical mechanism of such a symmetry violation, related to radiation-condensation instability, is proposed. This effect can reduce the would-be advantage of the double-null configuration in the power load spreading over a larger area, which is vital for fusion reactor projects.

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ACKNOWLEDGMENTS

This work was carried out using computational resources of MCC NRC “Кurchatov Institute” (http://computing.nrcki.ru/). The computer resources of Peter the Great Saint-Petersburg Polytechnic University Supercomputing Center (http://www.spbstu.ru) and of the computational cluster of the laboratory of plasma–surface interactions and plasma technology at the National Research Nuclear University “MEPhI” were also used for the computations.

Funding

This work was supported by the Russian Science Foundation through grant no. 18-12-00329 at the National Research Nuclear University “MEPhI.”

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Authors and Affiliations

  1. National Research Center “Kurchatov Institute”, 123182, Moscow, Russia

    A. S. Kukushkin

  2. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115406, Moscow, Russia

    A. S. Kukushkin

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  1. A. S. Kukushkin
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Correspondence to A. S. Kukushkin.

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Kukushkin, A.S. Spontaneous Break of up–down Symmetry in a Symmetric Double-Null Divertor Configuration. Plasma Phys. Rep. 45, 637–641 (2019). https://doi.org/10.1134/S1063780X19070067

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  • DOI: https://doi.org/10.1134/S1063780X19070067

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