| Project/Area Number |
05044079
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | University of Tokyo |
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Principal Investigator |
KATSURAI Makoto University of Tokyo, Professor, 工学部, 教授 (70011103)
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| Co-Investigator(Kenkyū-buntansha) |
パンフリー ニール プリンストン大学, プラズマ物理研究所, 研究員
フォンゲラー シュヴァイ プリンストン大学, プラズマ物理研究所, 主任研究員
YAMADA Masaaki Princeton Plasma Physics Laboratory, Pricipal Research Physicist, プラズマ物理研究所, 主任研究員
パーキンス フランシスW プリンストン大学, プラズマ物理研究所, 主任研究員教授
ITAGAKI Toshifumi University of Tokyo, Research Stuff, 工学部, 助手 (60242012)
ONO Yasushi University of Tokyo, Associate Professor, 工学部, 助教授 (30214191)
PERKINS Francis.w Princeton Plasma Physics Laboratory, Pricipal Research Physicist
POMPHREY Neil Princeton Plasma Physics Laboratory, Research Physicist
VON GOELER Shweickhard e Princeton Plasma Physics Laboratory, Pricipal Research Physicist
シュヴァイクハルト E プリンストン大学, プラズマ物理研究所, 主任研究員
マサアキ ヤマダ プリンストン大学, プラズマ物理研究所, 主任研究員
フランシス・W パーキン プリンストン大学, プラズマ物理研究所, 主任研究員教授
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1994: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1993: ¥3,000,000 (Direct Cost: ¥3,000,000)
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| Keywords | Magnetic Reconnection / Spheromak |
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| Research Abstract |
The TS-3 machine at the Univ.Tokyo with the Z-rheta pinch type spheromak formation scheme has been used to produce a pair of free boundary compact toroids with a minor radius of about 15cm. Their toroidal plasma currents of about 30kA,are induced in the same direction to permit the plasmas to merge through forced (driven) magnetic reconnection. Their toroidal magnetic fields produced by the poloidal plasma currents are made either parallel or anti-parallel, permitting us to investigate the three dimensional effects of the magnetic reconnection. A center cylindrical conductor with a current of -20kA (REP region) to 120kA (tokamak region) is used to apply an external toroidal field to these merging toroids. The variation of both poloidal plasma currents and external toroidal field currents permits the change in magnetic configuration of merging plasmas, enabling the reconnection angle to vary continuously from about 20ﾟ (tokamak merging) through 90ﾟ (cohelicity spheromak merging) to 180ﾟ (counter-helicity spheromak merging). It is found that both merging speed and ion heating enlarged with increasing reconnection angle.
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