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Power deposition of H minority heating with a new compact ICRF antenna in KSTAR

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Abstract

The new compact ICRH antenna (CIA) with low electric field and conjugate-T has been installed in KSTAR. It is essential for studying the effect on the KSTAR plasma of H minority heating as a main ICRH scheme. The TRANSP-TORIC code has been adopted for analyzing the ICRH effect. The calculation using TRANSP-TORIC has been conducted with an additional 1 MW of ICRH power to the KSTAR operation at B0 = 2.0 T. About 75% of the ICRH power has coupled to the H minority heating, and most of the power of H minority heating has contributed to the energy of D majority ions and electrons. The deposited profile of the minority heating power varies with the concentration rate of the H minority ions and shows the possibility of producing energetic particles which appears to the increasing energy of D majority ions. The power of the H minority heating has good coupling to the majority ions in the broad range of 5 < n// < 35, including n// of the newly installed CIA in KSTAR.

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Acknowledgment

This research was supported by R&D Program of "KSTAR Experimental Collaboration and Fusion Plasma Research (EN2101-12)" through the Korea Institute of Fusion Energy (KFE) funded by the Government funds.

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Authors and Affiliations

  1. National Fusion Research Institute, 169-148, Gwahak-ro, Yuseong-gu, Daejeon, 34133, South Korea

    H. Y. Lee, J. S. Kang, H. H. Wi, S. J. Wang & J. G. Kwak

  2. National Institute for Fusion Science, National Institute of National Sciences, Toki, Gifu, 509-5292, Japan

    K. Saito

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  1. H. Y. Lee
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  2. J. S. Kang
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  3. H. H. Wi
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  4. S. J. Wang
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  5. J. G. Kwak
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  6. K. Saito
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Correspondence to J. G. Kwak.

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Lee, H.Y., Kang, J.S., Wi, H.H. et al. Power deposition of H minority heating with a new compact ICRF antenna in KSTAR. J. Korean Phys. Soc. 78, 1067–1071 (2021). https://doi.org/10.1007/s40042-021-00141-y

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  • DOI: https://doi.org/10.1007/s40042-021-00141-y

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