Critical assessment of ion loss mechanisms for L-H transition

Timo Kiviniemi; Jukka Heikkinen; A. Peeters; T. Kurki-Suonio; Seppo Sipilä

doi:10.1088/0741-3335/42/5A/320

Critical assessment of ion loss mechanisms for L-H transition

Timo Kiviniemi, Jukka Heikkinen, A. Peeters, T. Kurki-Suonio, Seppo Sipilä

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

Abstract

Monte Carlo ion simulation of the tokamak edge, based on the neoclassical radial current balance, shows that a considerable E×B shear, relevant for turbulence suppression, can be generated by orbit losses. In contrast to earlier orbit loss models, no spontaneous bifurcation of the radial electric field E_r is found. However, a bifurcation and a solitary E_r generation are found in simulations with electrode polarization.

Original language	English
Pages (from-to)	A185-A190
Journal	Plasma Physics and Controlled Fusion
Volume	42
Issue number	Supplement 5A
DOIs	https://doi.org/10.1088/0741-3335/42/5A/320
Publication status	Published - 2000
MoE publication type	A1 Journal article-refereed

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title = "Critical assessment of ion loss mechanisms for L-H transition",

abstract = "Monte Carlo ion simulation of the tokamak edge, based on the neoclassical radial current balance, shows that a considerable E×B shear, relevant for turbulence suppression, can be generated by orbit losses. In contrast to earlier orbit loss models, no spontaneous bifurcation of the radial electric field Er is found. However, a bifurcation and a solitary Er generation are found in simulations with electrode polarization.",

author = "Timo Kiviniemi and Jukka Heikkinen and A. Peeters and T. Kurki-Suonio and Seppo Sipil{\"a}",

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T1 - Critical assessment of ion loss mechanisms for L-H transition

AU - Kiviniemi, Timo

AU - Heikkinen, Jukka

AU - Peeters, A.

AU - Kurki-Suonio, T.

AU - Sipilä, Seppo

PY - 2000

Y1 - 2000

N2 - Monte Carlo ion simulation of the tokamak edge, based on the neoclassical radial current balance, shows that a considerable E×B shear, relevant for turbulence suppression, can be generated by orbit losses. In contrast to earlier orbit loss models, no spontaneous bifurcation of the radial electric field Er is found. However, a bifurcation and a solitary Er generation are found in simulations with electrode polarization.

AB - Monte Carlo ion simulation of the tokamak edge, based on the neoclassical radial current balance, shows that a considerable E×B shear, relevant for turbulence suppression, can be generated by orbit losses. In contrast to earlier orbit loss models, no spontaneous bifurcation of the radial electric field Er is found. However, a bifurcation and a solitary Er generation are found in simulations with electrode polarization.

U2 - 10.1088/0741-3335/42/5A/320

DO - 10.1088/0741-3335/42/5A/320

M3 - Article

SN - 0741-3335

VL - 42

SP - A185-A190

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - Supplement 5A

ER -

Critical assessment of ion loss mechanisms for L-H transition

Abstract

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