Electromagnetic particle simulation of the effect of toroidicity on linear mode conversion and absorption of lower hybrid waves

Bao, J.; Lin, Z.; Kuley, A.; Wang, Z. X.

doi:10.1088/0029-5515/56/6/066007

Title: Electromagnetic particle simulation of the effect of toroidicity on linear mode conversion and absorption of lower hybrid waves

Journal Article · Wed May 11 00:00:00 EDT 2016 · Nuclear Fusion

DOI:https://doi.org/10.1088/0029-5515/56/6/066007· OSTI ID:1565485

Bao, J.; Lin, Z.; Kuley, A.; Wang, Z. X.

Effects of toroidicity on linear mode conversion and absorption of lower hybrid (LH) waves in fusion plasmas have been studied using electromagnetic particle simulation. The simulation confirms that the toroidicity induces an upshift of parallel refractive index when LH waves propagate from the tokamak edge toward the core, which affects the radial position for the mode conversion between slow and fast LH waves. Furthermore, moving LH antenna launch position from low field side toward high field side leads to a larger upshift of the parallel refractive index, which helps the slow LH wave penetration into the tokamak core. The broadening of the poloidal spectrum of the wave-packet due to wave diffraction is also verified in the simulation. Both the upshift and broadening effects of the parallel spectrum of the wave-packet modify the parallel phase velocity and thus the linear absorption of LH waves by electron Landau resonance.

Cite

Export

Save

Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: AC02-05CH11231; AC05-00OR22725

OSTI ID:: 1565485

Journal Information:: Nuclear Fusion, Vol. 56, Issue 6; ISSN 0029-5515

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

References (46)

Confining a Tokamak Plasma with rf-Driven Currents Fisch, Nathaniel J. Physical Review Letters, Vol. 41, Issue 13 https://doi.org/10.1103/PhysRevLett.41.873	journal	September 1978
Theory of current drive in plasmas Fisch, Nathaniel J. Reviews of Modern Physics, Vol. 59, Issue 1 https://doi.org/10.1103/RevModPhys.59.175	journal	January 1987
Suppression of magnetic islands by rf driven currents Reiman, Allan H. Physics of Fluids, Vol. 26, Issue 5 https://doi.org/10.1063/1.864258	journal	January 1983
Chapter 6: Steady state operation Gormezano, C.; Sips, A. C. C.; Luce, T. C. Nuclear Fusion, Vol. 47, Issue 6 https://doi.org/10.1088/0029-5515/47/6/S06	journal	June 2007
Toroidal and scattering effects on lower-hybrid wave propagation Bonoli, Paul T. Physics of Fluids, Vol. 25, Issue 2 https://doi.org/10.1063/1.863744	journal	January 1982
An assessment of full wave effects on the propagation and absorption of lower hybrid waves Wright, J. C.; Bonoli, P. T.; Schmidt, A. E. Physics of Plasmas, Vol. 16, Issue 7 https://doi.org/10.1063/1.3166137	journal	July 2009
Plasma wave simulation based on a versatile finite element method solver Shiraiwa, S.; Meneghini, O.; Parker, R. Physics of Plasmas, Vol. 17, Issue 5 https://doi.org/10.1063/1.3396371	journal	May 2010
The mixed Wentzel–Kramers–Brillouin-full-wave approach and its application to lower hybrid wave propagation and absorption Lu, Z. X.; Zonca, F.; Cardinali, A. Physics of Plasmas, Vol. 20, Issue 3 https://doi.org/10.1063/1.4798408	journal	March 2013
Comparison of the theory and the practice of lower-hybrid current drive Karney, C. F. F.; Fisch, N. J.; Jobes, F. C. Physical Review A, Vol. 32, Issue 4 https://doi.org/10.1103/PhysRevA.32.2554	journal	October 1985
Simulation model for lower hybrid current drive Bonoli, Paul T.; Englade, Ronald C. Physics of Fluids, Vol. 29, Issue 9 https://doi.org/10.1063/1.865494	journal	September 1986
Use of the multidimensional WKB method to describe propagation of lower hybrid waves in tokamak plasma Pereverzev, G. V. Nuclear Fusion, Vol. 32, Issue 7 https://doi.org/10.1088/0029-5515/32/7/I01	journal	July 1992
Absorption of lower hybrid waves in the scrape off layer of a diverted tokamak Wallace, G. M.; Parker, R. R.; Bonoli, P. T. Physics of Plasmas, Vol. 17, Issue 8 https://doi.org/10.1063/1.3465662	journal	August 2010
Observation of Parametric Instabilities in Lower-Hybrid Radio-Frequency Heating of Tokamaks Porkolab, M.; Bernabei, S.; Hooke, W. M. Physical Review Letters, Vol. 38, Issue 5 https://doi.org/10.1103/PhysRevLett.38.230	journal	January 1977
Detection of lower hybrid waves in the scrape-off layer of tokamak plasmas with microwave backscattering Baek, S. G.; Shiraiwa, S.; Parker, R. R. Physics of Plasmas, Vol. 21, Issue 1 https://doi.org/10.1063/1.4861127	journal	January 2014
Theory of parametric instability near the lower-hybrid frequency Porkolab, Miklos Physics of Fluids, Vol. 17, Issue 7 https://doi.org/10.1063/1.1694910	journal	January 1974
Unified formalism of lower hybrid parametric instabilities in plasmas Tripathi, V. K.; Grebogi, C.; Liu, C. S. Physics of Fluids, Vol. 20, Issue 9 https://doi.org/10.1063/1.862052	journal	January 1977
Density threshold for parametric instability of lower-hybrid waves in tokamaks Liu, C. S.; Tripathi, V. K.; Chan, V. S. Physics of Fluids, Vol. 27, Issue 7 https://doi.org/10.1063/1.864826	journal	January 1984
A gyrokinetic electron and fully kinetic ion plasma simulation model Lin, Yu; Wang, Xueyi; Lin, Zhihong Plasma Physics and Controlled Fusion, Vol. 47, Issue 4 https://doi.org/10.1088/0741-3335/47/4/006	journal	March 2005
Simulation of linear and nonlinear Landau damping of lower hybrid waves Qi, Lei; Wang, X. Y.; Lin, Y. Physics of Plasmas, Vol. 20, Issue 6 https://doi.org/10.1063/1.4812196	journal	June 2013
Benchmark Simulations of Gyro-Kinetic Electron and Fully-Kinetic Ion Model for Lower Hybrid Waves in Linear Region Li, Dehui; Xiang, Nong; Lin, Yu Plasma Science and Technology, Vol. 16, Issue 9 https://doi.org/10.1088/1009-0630/16/9/03	journal	September 2014
VORPAL: a versatile plasma simulation code Nieter, Chet; Cary, John R. Journal of Computational Physics, Vol. 196, Issue 2 https://doi.org/10.1016/j.jcp.2003.11.004	journal	May 2004
Pullback transformations in gyrokinetic theory Qin, H.; Tang, W. M. Physics of Plasmas, Vol. 11, Issue 3 https://doi.org/10.1063/1.1640626	journal	March 2004
Gyrocenter-gauge kinetic algorithm for high frequency waves in magnetized plasmas Yu, Zhi; Qin, Hong Physics of Plasmas, Vol. 16, Issue 3 https://doi.org/10.1063/1.3097266	journal	March 2009
Verification of particle simulation of radio frequency waves in fusion plasmas Kuley, Animesh; Wang, Z. X.; Lin, Z. Physics of Plasmas, Vol. 20, Issue 10 https://doi.org/10.1063/1.4826507	journal	October 2013
Verification of nonlinear particle simulation of radio frequency waves in tokamak Kuley, A.; Lin, Z.; Bao, J. Physics of Plasmas, Vol. 22, Issue 10 https://doi.org/10.1063/1.4934606	journal	October 2015
Method to integrate full particle orbit in toroidal plasmas Wei, X. S.; Xiao, Y.; Kuley, A. Physics of Plasmas, Vol. 22, Issue 9 https://doi.org/10.1063/1.4929799	journal	September 2015
Turbulent Transport Reduction by Zonal Flows: Massively Parallel Simulations Lin, Z. Science, Vol. 281, Issue 5384 https://doi.org/10.1126/science.281.5384.1835	journal	September 1998
Neoclassical Transport in Enhanced Confinement Toroidal Plasmas Lin, Z.; Tang, W. M.; Lee, W. W. Physical Review Letters, Vol. 78, Issue 3 https://doi.org/10.1103/PhysRevLett.78.456	journal	January 1997
Gyrokinetic particle simulation of neoclassical transport Lin, Z.; Tang, W. M.; Lee, W. W. Physics of Plasmas, Vol. 2, Issue 8 https://doi.org/10.1063/1.871196	journal	August 1995
Transport of Energetic Particles by Microturbulence in Magnetized Plasmas Zhang, Wenlu; Lin, Zhihong; Chen, Liu Physical Review Letters, Vol. 101, Issue 9 https://doi.org/10.1103/PhysRevLett.101.095001	journal	August 2008
Turbulent Transport of Trapped-Electron Modes in Collisionless Plasmas Xiao, Yong; Lin, Zhihong Physical Review Letters, Vol. 103, Issue 8 https://doi.org/10.1103/PhysRevLett.103.085004	journal	August 2009
Nonlinear Frequency Oscillation of Alfvén Eigenmodes in Fusion Plasmas Zhang, H. S.; Lin, Z.; Holod, I. Physical Review Letters, Vol. 109, Issue 2 https://doi.org/10.1103/PhysRevLett.109.025001	journal	July 2012
Radial Localization of Toroidicity-Induced Alfvén Eigenmodes Wang, Zhixuan; Lin, Zhihong; Holod, Ihor Physical Review Letters, Vol. 111, Issue 14 https://doi.org/10.1103/PhysRevLett.111.145003	journal	October 2013
Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. I. Internal kink mode McClenaghan, J.; Lin, Z.; Holod, I. Physics of Plasmas, Vol. 21, Issue 12 https://doi.org/10.1063/1.4905073	journal	December 2014
Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. II. Resistive tearing mode Liu, Dongjian; Zhang, Wenlu; McClenaghan, Joseph Physics of Plasmas, Vol. 21, Issue 12 https://doi.org/10.1063/1.4905074	journal	December 2014
Gyrokinetic particle simulation of microturbulence for general magnetic geometry and experimental profiles Xiao, Yong; Holod, Ihor; Wang, Zhixuan Physics of Plasmas, Vol. 22, Issue 2 https://doi.org/10.1063/1.4908275	journal	February 2015
Review of recent experimental and modeling progress in the lower hybrid range of frequencies at ITER relevant parameters Bonoli, Paul T. Physics of Plasmas, Vol. 21, Issue 6 https://doi.org/10.1063/1.4884360	journal	June 2014
Toroidal effects on propagation, damping, and linear mode conversion of lower hybrid waves Ignat, D. W. Physics of Fluids, Vol. 24, Issue 6 https://doi.org/10.1063/1.863500	journal	January 1981
Application of very high harmonic fast waves for off-axis current drive in the DIII-D and FNSF-AT tokamaks Prater, R.; Moeller, C. P.; Pinsker, R. I. Nuclear Fusion, Vol. 54, Issue 8 https://doi.org/10.1088/0029-5515/54/8/083024	journal	June 2014
Lower hybrid current drive experiments on Alcator C-Mod: Comparison with theory and simulation Bonoli, P. T.; Ko, J.; Parker, R. Physics of Plasmas, Vol. 15, Issue 5 https://doi.org/10.1063/1.2904569	journal	May 2008
Characterization of onset of parametric decay instability of lower hybrid waves Baek, S. G.; Bonoli, P. T.; Parker, R. R. RADIOFREQUENCY POWER IN PLASMAS: Proceedings of the 20th Topical Conference, AIP Conference Proceedings https://doi.org/10.1063/1.4864510	conference	January 2014
A full wave description of the accessibility of the lower-hybrid resonance to the slow wave in tokamaks Woods, A. M.; Cairns, R. A.; Lashmore-Davies, C. N. Physics of Fluids, Vol. 29, Issue 11 https://doi.org/10.1063/1.865804	journal	January 1986
One dimensional full wave analysis of slow-to-fast mode conversion in lower hybrid frequencies Jia, Guo-Zhang; Gao, Zhe Physics of Plasmas, Vol. 21, Issue 12 https://doi.org/10.1063/1.4905061	journal	December 2014
High field side launch of RF waves: A new approach to reactor actuators Wallace, G. M.; Baek, S. G.; Bonoli, P. T. RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 21st Topical Conference, AIP Conference Proceedings https://doi.org/10.1063/1.4936482	conference	January 2015
Coupling of alpha channeling to parallel wavenumber upshift in lower hybrid current drive Ochs, I. E.; Bertelli, N.; Fisch, N. J. Physics of Plasmas, Vol. 22, Issue 8 https://doi.org/10.1063/1.4928903	journal	August 2015
Alpha channeling with high-field launch of lower hybrid waves Ochs, I. E.; Bertelli, N.; Fisch, N. J. Physics of Plasmas, Vol. 22, Issue 11 https://doi.org/10.1063/1.4935123	journal	November 2015

Similar Records

Global particle simulation of lower hybrid wave propagation and mode conversion in tokamaks

Journal Article · Thu Dec 10 00:00:00 EST 2015 · AIP Conference Proceedings · OSTI ID:1565485

Lin, Z.; Kuley, A.

On ray stochasticity during lower-hybrid current drive in tokamaks

Journal Article · Thu Apr 01 00:00:00 EST 1993 · Physics of Fluids B; (United States) · OSTI ID:1565485

Bizarro, J P; Moreau, D

Scattering from edge density fluctuations on the lower hybrid waves in FTU

Journal Article · Fri Sep 28 00:00:00 EDT 2007 · AIP Conference Proceedings · OSTI ID:1565485

Calabro, Giuseppe; Ridolfini, V Pericoli

Related Subjects

Physics

Title: Electromagnetic particle simulation of the effect of toroidicity on linear mode conversion and absorption of lower hybrid waves

Citation Formats

References (46)

Similar Records

Related Subjects