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Abrupt reduction of core electron heat transport in response to edge cooling on the Large Helical Device

S Inagaki, N Tamura, T Tokuzawa, K Ida, K Itoh, S V Neudatchin, K Tanaka, Y Nagayama, K Kawahata, M Yakovlev2006年Plasma Physics and Controlled FusionIF 2.2出版社

Cold pulse inversion in a helical plasma is observed in the Large Helical Device (LHD) and thus the strong non-local effects are evident in the helical device as well as in tokamaks. A hydrogen pellet or tracer encapsulated solid pellet is injected into the edge of the LHD plasmas. A significant rise of the electron temperature is observed in the central region in response to the edge cooling. Transient analysis indicates a heat flux jump despite the absence of a change in the local temperature gradient. The non-local temperature rise takes place in the low density and high temperature regime just as predicted by the TFTR scaling.

日本語訳

ヘリカル装置における冷たいパルスの反転が大型ヘリカル装置(LHD)で観測され、これにより強い非局所効果がトカマクだけでなくヘリカル装置でも明らかであることが示された。水素またはトレーサー封入固体ペレットがLHDプラズマの周辺部に注入された。周辺部の冷却に応じて、中心領域での電子温度の有意な上昇が観測された。過渡解析により、局所的な温度勾配の変化がないにもかかわらず、熱流束の跳躍が示された。この非局所的な温度上昇は、TFTRスケーリングによって予測されたとおり、低密度かつ高温の領域で発生する。

装置

lhd高精度(タイトル一致)tftr中精度(概要文一致)

wiki

Helical deviceHeat transportElectron heat transport
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