Investigation of ICRF heating efficiency in plug/barrier cell on GAMMA 10/PDX with a full-wave code

Yushi Kubota, Mafumi Hirata, Seowon Jang, Makoto Ichimura, Ryuya Ikezoe, Mizuki Sakamoto, Shuhei Sumida, Atsuto Tanaka, Koki Izumi, Ryo Sekine, Hiroki Kayano, Yousuke Nakashima, Atsushi Fukuyama

Research output: Contribution to journalArticle

Abstract

In the west end of GAMMA 10/PDX, the end-loss ion flux is utilized for divertor simulation experiments. It is important for controlling parameters of the end-loss ion flux to investigate the efficiency of ion cyclotron range of frequency (ICRF) heating in the west plug/barrier cell, which is next to the west end region. The ICRF heating experiments in the west plug/barrier cell have been performed. In this study, three-dimensional simulations of the ICRF wave propagation were carried out in the plug/barrier cell for the first time. Two types of antennas, a Double Half Turn (WB-DHT) and a Nagoya Type-III (WB-Type-III) antennas, are evaluated. As the results, it is clarified that the WB-Type-III antenna is more effective for the ion heating than the WB-DHT antenna when the frequency is near the ion cyclotron resonance frequency at the midplane of the plug/barrier cell. An additional experiment with the WB-Type-III antenna which is located near the midplane of the plug/barrier cell has been performed. The improvement of the power absorption has been observed. TheWB-Type-III antenna located near the midplane is more effective for the ion heating. The experimental results are consistent with the simulation of the wave propagation analysis.

Original languageEnglish
Article number2401012
JournalPlasma and Fusion Research
Volume14
Issue numberSpecialissue1
DOIs
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Kubota, Y., Hirata, M., Jang, S., Ichimura, M., Ikezoe, R., Sakamoto, M., Sumida, S., Tanaka, A., Izumi, K., Sekine, R., Kayano, H., Nakashima, Y., & Fukuyama, A. (2019). Investigation of ICRF heating efficiency in plug/barrier cell on GAMMA 10/PDX with a full-wave code. Plasma and Fusion Research, 14(Specialissue1), [2401012]. https://doi.org/10.1585/pfr.14.2401012