L-H transport barrier formation: Monte Carlo simulation of the sheared E × B flow dynamics in tokamaks

Jukka Heikkinen; Timo Kiviniemi; A. Peeters

doi:10.1002/1521-3986(200006)40:3/4<431::AID-CTPP431>3.0.CO;2-9

L-H transport barrier formation: Monte Carlo simulation of the sheared E × B flow dynamics in tokamaks

Jukka Heikkinen (Corresponding Author), Timo Kiviniemi, A. Peeters

VTT Technical Research Centre of Finland

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

5 Citations (Scopus)

Abstract

Monte Carlo ion simulation and semi‐analytical calculation of the neoclassical radial current balance in a tokamak plasma edge show no spontaneous bifurcation of radial electric field E_r in contrast with earlier orbit loss models, but bifurcation and a solitary E_r generation by electrode polarization are seen. Strong orbit loss shear is found for H‐mode threshold conditions in ASDEX Upgrade, indicating that orbit loss is the major source of the shear for L‐H transition.

Original language	English
Pages (from-to)	431-436
Journal	Contributions to Plasma Physics
Volume	40
Issue number	3-4
DOIs	https://doi.org/10.1002/1521-3986(200006)40:3/4<431::AID-CTPP431>3.0.CO;2-9
Publication status	Published - 2000
MoE publication type	A1 Journal article-refereed

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10.1002/1521-3986(200006)40:3/4<431::AID-CTPP431>3.0.CO;2-9

Cite this

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title = "L-H transport barrier formation: Monte Carlo simulation of the sheared E × B flow dynamics in tokamaks",

abstract = "Monte Carlo ion simulation and semi‐analytical calculation of the neoclassical radial current balance in a tokamak plasma edge show no spontaneous bifurcation of radial electric field Er in contrast with earlier orbit loss models, but bifurcation and a solitary Er generation by electrode polarization are seen. Strong orbit loss shear is found for H‐mode threshold conditions in ASDEX Upgrade, indicating that orbit loss is the major source of the shear for L‐H transition. ",

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AU - Kiviniemi, Timo

AU - Peeters, A.

PY - 2000

Y1 - 2000

N2 - Monte Carlo ion simulation and semi‐analytical calculation of the neoclassical radial current balance in a tokamak plasma edge show no spontaneous bifurcation of radial electric field Er in contrast with earlier orbit loss models, but bifurcation and a solitary Er generation by electrode polarization are seen. Strong orbit loss shear is found for H‐mode threshold conditions in ASDEX Upgrade, indicating that orbit loss is the major source of the shear for L‐H transition.

AB - Monte Carlo ion simulation and semi‐analytical calculation of the neoclassical radial current balance in a tokamak plasma edge show no spontaneous bifurcation of radial electric field Er in contrast with earlier orbit loss models, but bifurcation and a solitary Er generation by electrode polarization are seen. Strong orbit loss shear is found for H‐mode threshold conditions in ASDEX Upgrade, indicating that orbit loss is the major source of the shear for L‐H transition.

U2 - 10.1002/1521-3986(200006)40:3/4<431::AID-CTPP431>3.0.CO;2-9

DO - 10.1002/1521-3986(200006)40:3/4<431::AID-CTPP431>3.0.CO;2-9

M3 - Article

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JO - Contributions to Plasma Physics

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IS - 3-4

ER -

L-H transport barrier formation: Monte Carlo simulation of the sheared E × B flow dynamics in tokamaks

Abstract

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