Analysis of fast minority ion distribution and current generation for ICRF and LH heating

Jukka Heikkinen, Timo Kiviniemi, Mervi Mantsinen, A. Saveliev, L. Eriksson, Timo Pättikangas, Seppo Sipilä, Alexander Piliya

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Dynamics of fast minority ions energized by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 2D Fokker - Planck and toroidal 3D Monte Carlo calculations. The power exchange between the waves and minority ions, the ensuing fast ion bootstrap current and the power deposition are calculated in the presence of fast ion radial diffusion and thermal minority ion source near the plasma edge. Both lower hybrid and ion cyclotron heating are observed to increase by increasing overlapping of the heating regimes and by radial diffusion, because of the enhanced diffusion of the ion cyclotron heated ions from their resonance region to the peripheral lower hybrid wave region, and diffusion of thermal ions from the plasma edge to the ion cyclotron heating region. The fast minority ion current is found to be strongly modified by the bootstrap current generation in the cyclotron heating region. An analytical expression to describe the RF-induced bootstrap current is presented.
Original languageEnglish
Pages (from-to)2063-2078
Number of pages16
JournalPlasma Physics and Controlled Fusion
Volume38
Issue number12
DOIs
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

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ion distribution
minorities
ion currents
Heating
heating
Ions
ions
Cyclotrons
cyclotrons
Plasmas
Cyclotron resonance
cyclotron resonance
ion sources
Induced currents
Ion sources
Ion exchange

Cite this

Heikkinen, Jukka ; Kiviniemi, Timo ; Mantsinen, Mervi ; Saveliev, A. ; Eriksson, L. ; Pättikangas, Timo ; Sipilä, Seppo ; Piliya, Alexander. / Analysis of fast minority ion distribution and current generation for ICRF and LH heating. In: Plasma Physics and Controlled Fusion. 1996 ; Vol. 38, No. 12. pp. 2063-2078.
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title = "Analysis of fast minority ion distribution and current generation for ICRF and LH heating",
abstract = "Dynamics of fast minority ions energized by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 2D Fokker - Planck and toroidal 3D Monte Carlo calculations. The power exchange between the waves and minority ions, the ensuing fast ion bootstrap current and the power deposition are calculated in the presence of fast ion radial diffusion and thermal minority ion source near the plasma edge. Both lower hybrid and ion cyclotron heating are observed to increase by increasing overlapping of the heating regimes and by radial diffusion, because of the enhanced diffusion of the ion cyclotron heated ions from their resonance region to the peripheral lower hybrid wave region, and diffusion of thermal ions from the plasma edge to the ion cyclotron heating region. The fast minority ion current is found to be strongly modified by the bootstrap current generation in the cyclotron heating region. An analytical expression to describe the RF-induced bootstrap current is presented.",
author = "Jukka Heikkinen and Timo Kiviniemi and Mervi Mantsinen and A. Saveliev and L. Eriksson and Timo P{\"a}ttikangas and Seppo Sipil{\"a} and Alexander Piliya",
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Heikkinen, J, Kiviniemi, T, Mantsinen, M, Saveliev, A, Eriksson, L, Pättikangas, T, Sipilä, S & Piliya, A 1996, 'Analysis of fast minority ion distribution and current generation for ICRF and LH heating', Plasma Physics and Controlled Fusion, vol. 38, no. 12, pp. 2063-2078. https://doi.org/10.1088/0741-3335/38/12/003

Analysis of fast minority ion distribution and current generation for ICRF and LH heating. / Heikkinen, Jukka; Kiviniemi, Timo; Mantsinen, Mervi; Saveliev, A.; Eriksson, L.; Pättikangas, Timo; Sipilä, Seppo; Piliya, Alexander.

In: Plasma Physics and Controlled Fusion, Vol. 38, No. 12, 1996, p. 2063-2078.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Analysis of fast minority ion distribution and current generation for ICRF and LH heating

AU - Heikkinen, Jukka

AU - Kiviniemi, Timo

AU - Mantsinen, Mervi

AU - Saveliev, A.

AU - Eriksson, L.

AU - Pättikangas, Timo

AU - Sipilä, Seppo

AU - Piliya, Alexander

N1 - Project code: ENE9606

PY - 1996

Y1 - 1996

N2 - Dynamics of fast minority ions energized by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 2D Fokker - Planck and toroidal 3D Monte Carlo calculations. The power exchange between the waves and minority ions, the ensuing fast ion bootstrap current and the power deposition are calculated in the presence of fast ion radial diffusion and thermal minority ion source near the plasma edge. Both lower hybrid and ion cyclotron heating are observed to increase by increasing overlapping of the heating regimes and by radial diffusion, because of the enhanced diffusion of the ion cyclotron heated ions from their resonance region to the peripheral lower hybrid wave region, and diffusion of thermal ions from the plasma edge to the ion cyclotron heating region. The fast minority ion current is found to be strongly modified by the bootstrap current generation in the cyclotron heating region. An analytical expression to describe the RF-induced bootstrap current is presented.

AB - Dynamics of fast minority ions energized by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 2D Fokker - Planck and toroidal 3D Monte Carlo calculations. The power exchange between the waves and minority ions, the ensuing fast ion bootstrap current and the power deposition are calculated in the presence of fast ion radial diffusion and thermal minority ion source near the plasma edge. Both lower hybrid and ion cyclotron heating are observed to increase by increasing overlapping of the heating regimes and by radial diffusion, because of the enhanced diffusion of the ion cyclotron heated ions from their resonance region to the peripheral lower hybrid wave region, and diffusion of thermal ions from the plasma edge to the ion cyclotron heating region. The fast minority ion current is found to be strongly modified by the bootstrap current generation in the cyclotron heating region. An analytical expression to describe the RF-induced bootstrap current is presented.

U2 - 10.1088/0741-3335/38/12/003

DO - 10.1088/0741-3335/38/12/003

M3 - Article

VL - 38

SP - 2063

EP - 2078

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 12

ER -