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

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

Research output: Book/ReportReport

Abstract

Dynamics of fast minority ions energised by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 20 Fokker-Planck and toroidal 30 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
Place of PublicationAbingdon
Number of pages24
Publication statusPublished - 1996
MoE publication typeD4 Published development or research report or study

Publication series

SeriesJET Preprint Series
NumberJET-P(96)34

Fingerprint

ion distribution
minorities
ion currents
heating
ions
cyclotrons
cyclotron resonance
ion sources

Cite this

Heikkinen, J., Kiviniemi, T., Mantsinen, M., Saveliev, A., Eriksson, L-G., Pättikangas, T., ... Piliya, A. (1996). Analysis of fast minority ion distribution and current generation for ICRF and LH heating. Abingdon. JET Preprint Series, No. JET-P(96)34
Heikkinen, Jukka ; Kiviniemi, Timo ; Mantsinen, Mervi ; Saveliev, A. ; Eriksson, L.-G. ; Pättikangas, Timo ; Sipilä, Seppo ; Piliya, Alexander. / Analysis of fast minority ion distribution and current generation for ICRF and LH heating. Abingdon, 1996. 24 p. (JET Preprint Series; No. JET-P(96)34).
@book{061cf7e391dd4b0f9ec6648159bcc4a7,
title = "Analysis of fast minority ion distribution and current generation for ICRF and LH heating",
abstract = "Dynamics of fast minority ions energised by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 20 Fokker-Planck and toroidal 30 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.-G. Eriksson and Timo P{\"a}ttikangas and Seppo Sipil{\"a} and Alexander Piliya",
note = "CA2: 1604 CA: ENE Project code: ENE9606",
year = "1996",
language = "English",
series = "JET Preprint Series",
number = "JET-P(96)34",

}

Heikkinen, J, Kiviniemi, T, Mantsinen, M, Saveliev, A, Eriksson, L-G, Pättikangas, T, Sipilä, S & Piliya, A 1996, Analysis of fast minority ion distribution and current generation for ICRF and LH heating. JET Preprint Series, no. JET-P(96)34, Abingdon.

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

Abingdon, 1996. 24 p. (JET Preprint Series; No. JET-P(96)34).

Research output: Book/ReportReport

TY - BOOK

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.-G.

AU - Pättikangas, Timo

AU - Sipilä, Seppo

AU - Piliya, Alexander

N1 - CA2: 1604 CA: ENE Project code: ENE9606

PY - 1996

Y1 - 1996

N2 - Dynamics of fast minority ions energised by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 20 Fokker-Planck and toroidal 30 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 energised by ion cyclotron resonance and lower hybrid heating in tokamaks is investigated by cylindrical 20 Fokker-Planck and toroidal 30 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.

M3 - Report

T3 - JET Preprint Series

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

CY - Abingdon

ER -

Heikkinen J, Kiviniemi T, Mantsinen M, Saveliev A, Eriksson L-G, Pättikangas T et al. Analysis of fast minority ion distribution and current generation for ICRF and LH heating. Abingdon, 1996. 24 p. (JET Preprint Series; No. JET-P(96)34).