Abstract
Abstract
Here we report on the upgrade of the quasioptical code PAraxial RAy DEscription (2019 Phys. Plasmas
26 072112) to introduce the relativistic effect for electron cyclotron resonance heating and current drive on fusion DEMO reactors, e.g. JA-DEMO, where the electron temperature is sufficiently high (almost 35 keV). By fully considering the relativistic effect, it is found that the outside launch used in many tokamaks is not suitable for localized heating in JA-DEMOdue to the contamination of spatially widespread absorption at relativistically down-shifted higher-harmonic resonance. It is proposed to adopt a top launch to avoid this issue, and is shown that top launch can improve the localization of the heating without degrading the current drive efficiency.
Subject
Condensed Matter Physics,Nuclear and High Energy Physics
Cited by
2 articles.
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1. Quasioptical modeling of the electron cyclotron emission diagnostic;Plasma Physics and Controlled Fusion;2024-01-19
2. Design activities of ECH/CD system for JA DEMO;24TH TOPICAL CONFERENCE ON RADIO-FREQUENCY POWER IN PLASMAS;2023