The effect of a radial electric field on the neoclassical tearing mode driven losses of energetic trapped ions

Hugo Ferrari; Youwen Sun; Kaiyang He; Ricardo Farengo; Pablo García-Martínez

doi:10.1088/2058-6272/adc29b

Plasma Science and Technology > 2025 > Accepted Manuscript > DOI: 10.1088/2058-6272/adc29b

Hugo Ferrari, Youwen Sun, Kaiyang He, Ricardo Farengo, Pablo García-Martínez. The effect of a radial electric field on the neoclassical tearing mode driven losses of energetic trapped ions[J]. Plasma Science and Technology. DOI: 10.1088/2058-6272/adc29b

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The effect of a radial electric field on the neoclassical tearing mode driven losses of energetic trapped ions

Comisión Nacional de Energía Atómica Gerencia de Física, CAB
Institute of Plasma Physics Chinese Academy of Sciences
Chinese Academy of Sciences Institute of Plasma Physics
Gerencia de Fïsica
CONICET Patagonia Norte

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Received Date: November 12, 2024
Revised Date: March 16, 2025
Accepted Date: March 18, 2025
Available Online: March 19, 2025

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Abstract

Abstract

A rotating neoclassical tearing mode (NTM) can increase the trapped ion losses when the frequency of the NTM is close to the precessional frequency of the trapped particles. When an equilibrium electric field, produced by the rotation of the plasma and the density gradient, is present, the average precessional frequency of the trapped ions changes and so does the mode frequency corresponding to the maximum loss rate. Our results show that when an electric field with a value of 11.2 kV/m at q = 2 is included the maximum of the trapped ion losses increases from 27 % to 30 % based on EAST equilibrium.
- Ion Losses,
- NTM,
- Fast Particles,
- Tokamaks,
- Plasma Rotation,
- Radial Electric Field

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