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Information × Registration Number 0224U032643, (0124U004784) , R & D reports Title Modeling of high-frequency plasma heating in the Joint Europian Torus fusion facility (UK). popup.stage_title Моделювання високочастотного нагрівання плазми в термоядерній установці Joint Europian Torus (Велика Британія) Head Hrekov Dmytro L., Доктор фізико-математичних наук Registration Date 28-11-2024 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description1 The purpose of this work is to study the propagation and absorption of a slow wave in the JET tokamak using computer modeling and to determine its effect on the magnetic configuration of the tokamak and plasma heating. popup.description2 A numerical code has been developed and used to model the interaction of electromagnetic fields with plasma during high-frequency heating in the ion cyclotron frequency range. The features of propagation and absorption of slow waves in the plasma of the JET tokamak were investigated by the ray trajectory method. Slow waves are emitted by antennas in the inverse ICRF modes of heating with a small additive or heating with wave conversion. The slow wave rays propagate mainly in a toroidal direction for a distance of up to 6.103 cm along and against the magnetic field direction. Propagating in the peripheral plasma, mainly between the separatrix and the wall, they slowly shift in the poloidal direction and can reach the divertor region. The change in equilibrium of the JET tokamak strongly affects both the propagation and absorption of slow waves. The cyclotron extinction on H and D ions of these waves in the peripheral plasma is very small. The absorption of slow waves is caused by ion-electron collisions and Landau attenuation. In the three-ion heating regimes of small D-3He-H additive ions, the slow waves are strongly attenuated in the cyclotron resonance of 3He ions even at very low additive ion densities. Product Description popup.authors Hrekov Dmytro L. popup.nrat_date 2024-11-28 Close