### Abstract

Original language | English |
---|---|

Pages (from-to) | 1196-1199 |

Journal | Europhysics Conference Abstracts |

Volume | 24B |

Publication status | Published - 2000 |

MoE publication type | B3 Non-refereed article in conference proceedings |

Event | 27th EPS Conference on Controlled Fusion and Plasma Physics - Budabest, Hungary Duration: 12 Jun 2000 → 16 Jun 2000 |

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*Europhysics Conference Abstracts*,

*24B*, 1196-1199.

}

*Europhysics Conference Abstracts*, vol. 24B, pp. 1196-1199.

**Particle-in-cell simulations of wave propagation in front of a lower hybrid grill.** / Rantamäki, Karin; Karttunen, Seppo; Pättikangas, Timo; Alm-Lytz, K.; Verboncoeur, J.; Mardahl, P.

Research output: Contribution to journal › Article in a proceedings journal › Scientific

TY - JOUR

T1 - Particle-in-cell simulations of wave propagation in front of a lower hybrid grill

AU - Rantamäki, Karin

AU - Karttunen, Seppo

AU - Pättikangas, Timo

AU - Alm-Lytz, K.

AU - Verboncoeur, J.

AU - Mardahl, P.

N1 - CA2: KET6 CA2: ENE6 CA: ket CA: ene

PY - 2000

Y1 - 2000

N2 - Particle-in-cell (PIC) codes can be applied to model wave coupling, propagation and absorption. The electrostatic PIC code XPDP2 has been used to analyse the edge plasma and the formation of fast electrons in front of the LH launcher. PIC codes take into account the kinetic and nonlinear effects, which are in some LHCD cases important, e.g., fast electron generation in edge plasmas and possible parametric instabilities. These effects are not included in linear coupling codes like SWAN. Particle-in-cell (PIC) codes are based on solving the equations of motion for the charged particles and the Maxwell equations for the fields. The particles move freely in the phase space and interact with the elelectric and magnetic fields on the grid. The motion of the charged particles generates current and charge densities acting as source terms in the Maxwell equations. Consequently, the fields and the particle motion are solved self-consistently. The disadvantage is the fairly high noise level, which can be slightly by increasing the number of particles. In this work, an electromagnetic particle-in-cell code OOPIC has been used to model wave launching from a 32 waveguide LH grill similar to the grill in Tore Supra and JET.

AB - Particle-in-cell (PIC) codes can be applied to model wave coupling, propagation and absorption. The electrostatic PIC code XPDP2 has been used to analyse the edge plasma and the formation of fast electrons in front of the LH launcher. PIC codes take into account the kinetic and nonlinear effects, which are in some LHCD cases important, e.g., fast electron generation in edge plasmas and possible parametric instabilities. These effects are not included in linear coupling codes like SWAN. Particle-in-cell (PIC) codes are based on solving the equations of motion for the charged particles and the Maxwell equations for the fields. The particles move freely in the phase space and interact with the elelectric and magnetic fields on the grid. The motion of the charged particles generates current and charge densities acting as source terms in the Maxwell equations. Consequently, the fields and the particle motion are solved self-consistently. The disadvantage is the fairly high noise level, which can be slightly by increasing the number of particles. In this work, an electromagnetic particle-in-cell code OOPIC has been used to model wave launching from a 32 waveguide LH grill similar to the grill in Tore Supra and JET.

M3 - Article in a proceedings journal

VL - 24B

SP - 1196

EP - 1199

JO - Europhysics Conference Abstracts

JF - Europhysics Conference Abstracts

SN - 0378-2271

ER -