Negative magnetic shear modes of operation in the Alcator C-Mod tokamak near the beta limit

P T Bonoli; M Porkolab; J J RamosW NevinsC Kessel

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Negative magnetic shear modes of operation in the Alcator C-Mod tokamak near the beta limit

机译：Negative magnetic shear modes of operation in the Alcator C-Mod tokamak near the beta limit

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摘要

The stability properties of non-inductively driven, reversed-shear type current profiles that may be achieved for Alcator C-Mod tokamak-like parameters (aspect ratio R/a = 3) are examined. It is found that without a conducting wall, the best stability results (up to 3.7) are achieved for highly triangular plasmasat, for relatively broad pressure profilesand large values of. For elliptical or circular cross-sectional plasmas with little triangularity, the stability limits are significantly lower). Finally, more-peaked pressure profileshave lower beta limits than broader profiles.

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《plasma physics and controlled fusion》 |1997年第2期|223-236|共页
作者
P T Bonoli; M Porkolab; J J RamosW NevinsC Kessel;
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作者单位

Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;

Lawrence Livermore National Laboratory, Livermore, CA 95540, USA;

Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, USA;

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Negative magnetic shear modes of operation in the Alcator C-Mod tokamak near the beta limit

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