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Study of discharge quenching in the T-10 tokamak by injecting high-Z impurity pellets

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Abstract

The problem of the fast quenching of a discharge in tokamaks by injecting high-Z impurity pellets is considered. Results are presented from experiments in the T-10 tokamak, in which a substantial decrease (up to 70%) in the thermal plasma energy was observed. A one-dimensional transport code is developed to describe tokamak-discharge quenching. The code is used to simulate the experiments on quenching the T-10 discharge. It is shown that the injection of a high-Z pellet into the T-10 plasma changes the transport coefficients as compared to their steady-state values derived from the energy balance or scalings.

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Authors and Affiliations

  1. St. Petersburg State Technical University, Politekhnicheskaya ul. 29, St. Petersburg, 195251, Russia

    V. M. Timokhin, V. Yu. Sergeev & B. V. Kuteev

Authors
  1. V. M. Timokhin
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  2. V. Yu. Sergeev
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  3. B. V. Kuteev
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__________

Translated from Fizika Plazmy, Vol. 27, No. 3, 2001, pp. 195–208.

Original Russian Text Copyright © 2001 by Timokhin, Sergeev, Kuteev.

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Timokhin, V.M., Sergeev, V.Y. & Kuteev, B.V. Study of discharge quenching in the T-10 tokamak by injecting high-Z impurity pellets. Plasma Phys. Rep. 27, 181–194 (2001). https://doi.org/10.1134/1.1354216

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  • DOI: https://doi.org/10.1134/1.1354216

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