Ion orbit loss current in asdex upgrade

Jukka Heikkinen; Timo Kiviniemi; A. Peetas; Taina Kurki-Suonio; Seppo Sipilä; W. Herrmann; W. Suttrop; H. Zohm

doi:10.1088/0741-3335/40/5/025

Ion orbit loss current in asdex upgrade

Jukka Heikkinen
, Timo Kiviniemi
, A. Peetas
, Taina Kurki-Suonio
, Seppo Sipilä
, W. Herrmann
, W. Suttrop
, H. Zohm

VTT Technical Research Centre of Finland

Helsinki University of Technology
Max-Planck-Institut für Plasmaphysik (IPP)
University of Stuttgart

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

8 Citations (Scopus)

Abstract

The orbit loss current is calculated for the ASDEX Upgrade geometry using the 5D (3D in configuration space and 2D in velocity space) Monte Carlo code ASCOT. The balance between the obtained current and the analytical estimate of the return current shows an L-H transition for the normalized collision frequency υ_*i≈1 as expected from analytic theory. The transition in ASDEX Upgrade, however, occurs at larger values of υ_*i≈1.

Original language	English
Pages (from-to)	693-696
Journal	Plasma Physics and Controlled Fusion
Volume	40
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/40/5/025
Publication status	Published - 1998
MoE publication type	A1 Journal article-refereed

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10.1088/0741-3335/40/5/025

Cite this

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title = "Ion orbit loss current in asdex upgrade",

abstract = "The orbit loss current is calculated for the ASDEX Upgrade geometry using the 5D (3D in configuration space and 2D in velocity space) Monte Carlo code ASCOT. The balance between the obtained current and the analytical estimate of the return current shows an L-H transition for the normalized collision frequency υ*i≈1 as expected from analytic theory. The transition in ASDEX Upgrade, however, occurs at larger values of υ*i≈1.",

author = "Jukka Heikkinen and Timo Kiviniemi and A. Peetas and Taina Kurki-Suonio and Seppo Sipil{\"a} and W. Herrmann and W. Suttrop and H. Zohm",

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T1 - Ion orbit loss current in asdex upgrade

AU - Heikkinen, Jukka

AU - Kiviniemi, Timo

AU - Peetas, A.

AU - Kurki-Suonio, Taina

AU - Sipilä, Seppo

AU - Herrmann, W.

AU - Suttrop, W.

AU - Zohm, H.

PY - 1998

Y1 - 1998

N2 - The orbit loss current is calculated for the ASDEX Upgrade geometry using the 5D (3D in configuration space and 2D in velocity space) Monte Carlo code ASCOT. The balance between the obtained current and the analytical estimate of the return current shows an L-H transition for the normalized collision frequency υ*i≈1 as expected from analytic theory. The transition in ASDEX Upgrade, however, occurs at larger values of υ*i≈1.

AB - The orbit loss current is calculated for the ASDEX Upgrade geometry using the 5D (3D in configuration space and 2D in velocity space) Monte Carlo code ASCOT. The balance between the obtained current and the analytical estimate of the return current shows an L-H transition for the normalized collision frequency υ*i≈1 as expected from analytic theory. The transition in ASDEX Upgrade, however, occurs at larger values of υ*i≈1.

U2 - 10.1088/0741-3335/40/5/025

DO - 10.1088/0741-3335/40/5/025

M3 - Article

SN - 0741-3335

VL - 40

SP - 693

EP - 696

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

ER -

Ion orbit loss current in asdex upgrade

Abstract

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