Non-inductive plasma current sustainment with stochastic electron cyclotron in EXL-50 spherical torus
Abstract
The start-up and sustainment of a stochastic wave non-inductive current on a spherical torus was experimentally demonstrated for the first time using only electron cyclotron waves. The plasma current is insensitive to the injection angle of ECWs and approximately linearly correlated with the slope of the X-ray spectrum. Its direction is determined by the vertical magnetic field (BV). The temporal development in the number of X-ray bremsstrahlung photons with a specified energy is consistent with the stochastic heating model. Moreover, the ratio of Amps to Watts of the ECW is generally >1 kA/kW under normal conditions (maximum plasma current: 150 kA, ECW: 140 kW). The experimental results are explained using the stochastic heating model of the asymmetric electron velocity distribution in stochastic electromagnetic waves.
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Cite
@article{arxiv.2108.09648,
title = {Non-inductive plasma current sustainment with stochastic electron cyclotron in EXL-50 spherical torus},
author = {Mingyuan Wang and Shikui Cheng and Bing Liu and Shaodong Song and Guo Dong and Yunyang Song and Wenjun Liu and Debabrata Banerjee and Songjian Li and Tiantian Sun and Yingying Li and Yuejiang Shi and Y. -K Martin Peng and ADi Liu},
journal= {arXiv preprint arXiv:2108.09648},
year = {2021}
}
Comments
The content of the article is controversial and needs to be reconfirmed with all authors before submission