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. Yakovlev; S. Sudo

doi:10.1088/0741-3335/48/5A/S23

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. Yakovlev, S. Sudo

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39 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	A251-A257
Journal	Plasma Physics and Controlled Fusion
Volume	48
Issue number	5 A
DOIs	https://doi.org/10.1088/0741-3335/48/5A/S23
Publication status	Published - May 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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10.1088/0741-3335/48/5A/S23

Cite this

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abstract = "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.",

author = "S. Inagaki and N. Tamura and T. Tokuzawa and K. Ida and K. Itoh and Neudatchin, {S. V.} and K. Tanaka and Y. Nagayama and K. Kawahata and M. Yakovlev and S. Sudo",

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T1 - Abrupt reduction of core electron heat transport in response to edge cooling on the Large Helical Device

AU - Inagaki, S.

AU - Tamura, N.

AU - Tokuzawa, T.

AU - Ida, K.

AU - Itoh, K.

AU - Neudatchin, S. V.

AU - Tanaka, K.

AU - Nagayama, Y.

AU - Kawahata, K.

AU - Yakovlev, M.

AU - Sudo, S.

PY - 2006/5

Y1 - 2006/5

N2 - 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.

AB - 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.

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JO - Plasma Physics and Controlled Fusion

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IS - 5 A

ER -

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

Abstract

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