Radiative Losses of Deuterons, Tritons, and Alpha Particles on Tungsten Ions in the Plasma of the ITER and EU-DEMO Tokamaks

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Abstract

Integral radiative losses of deuterons, tritons, and alpha particles on impurity tungsten ions have been calculated for the first time within the statistical theory of the atom for the designed operational regimes of the ITER and EU-DEMO tokamak reactors. It was previously shown within the statistical theory of the atom that specific radiative losses of this new ion channel are comparable with specific electron radiative losses, which also include losses due to bremsstrahlung, radiative and dielectron recombination. Integral radiative losses have been calculated within the numerical model of fusion power isolines, which was previously proposed to study the operational space and design regimes of tokamak reactors. Spatial distributions of the tungsten density with various degrees of peaking in the center of a plasma column have been considered to study the influence of the accumulation of the impurity on integral radiative losses. It has been found that the studied new channel adds about 20 and 30% to the total integral radiative losses on tungsten in the ITER and E-U‑DEMO tokamak reactors, respectively. Consequently, this channel of radiative losses should be taken into account to examine in more detail the working scenarios of these devices.

About the authors

A. A. Mavrin

National Research Center Kurchatov Institute

Email: mavrin_aa@nrcki.ru
123182, Moscow, Russia

A. V. Demura

National Research Center Kurchatov Institute

Email: mavrin_aa@nrcki.ru
123182, Moscow, Russia

D. S. Leont'ev

National Research Center Kurchatov Institute

Email: mavrin_aa@nrcki.ru
123182, Moscow, Russia

V. S. Lisitsa

National Research Center Kurchatov Institute; Moscow Institute of Physics and Technology (National Research University); National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Author for correspondence.
Email: mavrin_aa@nrcki.ru
123182, Moscow, Russia; 141701, Dolgoprudnyi, Moscow region, Russia; 115409, Moscow, Russia

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