球状トーラスプラズマにおけるダブルパルスヘリシティ入射実験

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2014/09/01

タイトル(英語): Experiment of Double-pulsing Helicity Injection on Helicity Injected Spherical Torus Plasmas

著者名: 花尾　隆史（兵庫県立大学大学院工学研究科），沖　伸晴（兵庫県立大学大学院工学研究科），中山　貴史（兵庫県立大学大学院工学研究科），兵部　貴弘（兵庫県立大学大学院工学研究科），廣納　秀年（兵庫県立大学大学院工学研究科），菊池　祐介（兵庫県立大学大学院工学研究科），福本　直之（兵庫県立大学大学院工学研究科），永田　正義（兵庫県立大学大学院工学研究科）

著者名(英語): Takafumi Hanao (Graduate School of Engineering, The University of Hyogo), Nobuharu Oki (Graduate School of Engineering, The University of Hyogo), Takashi Nakayama (Graduate School of Engineering, The University of Hyogo), Takahiro Hyobu (Graduate School of Engineering, The University of Hyogo), Hidetoshi Hirono (Graduate School of Engineering, The University of Hyogo), Yusuke Kikuchi (Graduate School of Engineering, The University of Hyogo), Naoyuki Fukumoto (Graduate School of Engineering, The University of Hyogo), Masayoshi Nagata (Graduate School of Engineering, The University of Hyogo)

キーワード: 球状トーラス，ヘリシティ入射，低アスペクト比　　spherical torus，helicity injection，low aspect ratio

要約(英語): Coaxial Helicity Injection (CHI) is one of useful methods for start-up to spherical torus (ST) and spheromak plasmas. The new approach of CHI so called the Multi-pulsing CHI operation has been proposed for the purpose of achieving the quasi-steady-state plasma and demonstrated in the sustained spheromak physics experiment (SSPX) gun-spheromak device for the first time. We conducted the initial experiment with the first application of double-pulsing CHI for the ST configurations. The experimental results showed flux/current amplification and sustainment of the plasmas. We observed repeating the driven phase and the decay phase from change of profile of force-free parameter λ. By the double-pulsing CHI operation, the sustainment time had increased up to about 8 ms which was longer than that in the single discharge. We investigated dependency of plasma current, density and the current density profile on the external toroidal field strength.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.9 （2014） 特集：高ベータコンパクトトーラスプラズマの先進制御

本誌掲載ページ: 497-502 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/134/9/134_497/_article/-char/ja/