1992 Fiscal Year Final Research Report Summary
Helicity Injection and Control of Confinement in a Reversed Field Pinch
| Project/Area Number |
03452281
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
プラズマ理工学
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| Research Institution | University of Tokyo |
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Principal Investigator |
SHINOHARA Shunjiro University of Tokyo, Faculty of Science, Research Associate, 理学部, 助手 (10134446)
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| Co-Investigator(Kenkyū-buntansha) |
TOYAMA Hiroshi University of Tokyo, Faculty of Science, Associate Professor, 理学部, 助教授 (50023718)
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| Project Period (FY) |
1991 – 1992
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| Keywords | RFP / Helicity / Conditioning / Confinement / Wall Interaction |
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| Research Abstract |
Studies on plasma confinement and wall interaction (conditioning, pump limiter and movable limiter) in addition to the helicity injection have been done in a reversed field pinch device.
Energy confinement is governed by the magnetic fluctuations, and MHD dynamo sustains the poloidal current inside the reversal surface and transport of fast electrons is more important in edge plasma region.
By the use of He glow, hydrogen glow, carbonization and boronization, improvements of plasma parameters have been found. Increase in loop voltage by inserting a movable limiter can be explained by the Spitzer term. First trial of helicity injection has been done. Plasma takes more relaxd state locally after this helicity injection. Induced voltage is influenced by the presence of fast electrons.
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