Effect of the neutral beam injector operational regime on the Alfven eigenmode saturation phase in DIII-D plasma

Varela, Jacobo; Spong, Donald A.; Garcia, Luis; Ghai, Yashika; Zarzoso, David; del-Castillo-Negrete, Diego; Betar, Homam; Ortiz, J.; Pace, D. C.; Van Zeeland, Michael A.; Du, Xiaodi; Sanchez, Raul; Tribaldos, Victor; Reynolds-Barredo, Jose Miguel

doi:10.1088/1361-6587/ad05d4

Title: Effect of the neutral beam injector operational regime on the Alfven eigenmode saturation phase in DIII-D plasma

Journal Article · Tue Oct 31 00:00:00 EDT 2023 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/1361-6587/ad05d4· OSTI ID:2281092

^[1];

^[2];

^[1];

^[2];

^[3];

^[2];

^[3]; Ortiz, J. ^[1]; Pace, D. C. ^[4];

^[4];

^[1];

^[1]

University Carlos III of Madrid (Spain)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Centre National de la Recherche Scientifique (CNRS) (France); Aix-Marseille Univ., Marseille (France)
General Atomics, San Diego, CA (United States)

The aim of this study is to analyze the effect of the neutral beam injector (NBI) operation regime on the saturation phase of the Alfven Eigenmodes (AEs) in DIII-D plasma. Here, the analysis is done using the linear and nonlinear versions of the gyro-fluid code FAR3d. A set of parametric analyses are performed modifying the nonlinear simulation EP $$β$$ (NBI injection power), EP energy (NBI voltage) and the radial location of the EP density profile gradient (NBI radial deposition). The analysis indicates a transition from the soft (local plasma relaxation) to the hard MHD (global plasma relaxation) limit if the simulation EP $$β$$ $$\unicode{x2A7E}$$ $0.02$, leading to bursting MHD activity caused by radial AEs overlapping. MHD bursts cause an enhancement of the EP transport showing ballistic-like features as avalanche-like events. Simulations in the soft MHD limit show an increment of the EP density gradient as the EP $$β$$ increases. On the other hand, there is a gradient upper limit in the hard MHD limit, consistent with the critical-gradient behavior. AEs induce shear flows and zonal current leading to the deformation of the flux surfaces and the safety factor profile, respectively, particularly strong for the simulation in the hard MHD limit. Simulations in the hard MHD regime show a decrease of the AE frequency in the saturation phase; this is caused by the destabilization of a transitional mode between a $9/3-10/3$ TAE and a $9/3$ RSAE that may explain the AE frequency down-sweeping observed in some DIII-D discharges. Reducing the EP energy in the nonlinear simulations leads to a weakening of the plasma perturbation. On the other hand, increasing the EP energy causes the opposite effect. Nonlinear simulations of off-axis NBI profiles indicate a lower plasma perturbation as the EP density gradient is located further away from the magnetic axis.

This content will become publicly available on Thu Oct 31 00:00:00 EDT 2024

Cite

Export

Save

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2281092

Journal Information:: Plasma Physics and Controlled Fusion, Vol. 65, Issue 12; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

References (100)

Analysis of the MHD stability and energetic particles effects on EIC events in LHD plasma using a Landau-closure model Varela, J.; Spong, D. A.; Garcia, L. Nuclear Fusion, Vol. 59, Issue 4 https://doi.org/10.1088/1741-4326/aaff80	journal	February 2019
Mitigation of Alfvénic activity by 3D magnetic perturbations on NSTX Kramer, G. J.; Bortolon, A.; Ferraro, N. M. Plasma Physics and Controlled Fusion, Vol. 58, Issue 8 https://doi.org/10.1088/0741-3335/58/8/085003	journal	July 2016
Ellipticity induced Alfvén eigenmodes Betti, R.; Freidberg, J. P. Physics of Fluids B: Plasma Physics, Vol. 3, Issue 8 https://doi.org/10.1063/1.859655	journal	August 1991
Magnetic turbulence and pressure gradient feedback effect of the 1/2 mode soft-hard magnetohydrodynamic limit in large helical device Varela, J.; Watanabe, K. Y.; Ohdachi, S. Physics of Plasmas, Vol. 21, Issue 9 https://doi.org/10.1063/1.4895499	journal	September 2014
A reduced fast ion transport model for the tokamak transport code TRANSP Podestà, M.; Gorelenkova, M.; White, R. B. Plasma Physics and Controlled Fusion, Vol. 56, Issue 5 https://doi.org/10.1088/0741-3335/56/5/055003	journal	April 2014
Progress in extending high poloidal beta scenarios on DIII-D towards a steady-state fusion reactor and impact of energetic particles Huang, J.; Garofalo, A. M.; Qian, J. P. Nuclear Fusion, Vol. 60, Issue 12 https://doi.org/10.1088/1741-4326/abaf33	journal	September 2020
Collisional effects on resonant particles in quasilinear theory Catto, Peter J. Journal of Plasma Physics, Vol. 86, Issue 3 https://doi.org/10.1017/S0022377820000355	journal	May 2020
Analysis of Alfven eigenmode destabilization in DIII-D high poloidal β discharges using a Landau closure model Varela, J.; Spong, D. A.; Garcia, L. Nuclear Fusion, Vol. 58, Issue 7 https://doi.org/10.1088/1741-4326/aac33f	journal	June 2018
Experimental observation of reverse-sheared Alfvén eigenmodes (RSAEs) in ELMy H-mode plasma on the EAST tokamak Zhang, Tao; Liu, Haiqing; Li, Guoqiang Plasma Science and Technology, Vol. 20, Issue 11 https://doi.org/10.1088/2058-6272/aac9b5	journal	September 2018
Measurements, modelling and electron cyclotron heating modification of Alfvén eigenmode activity in DIII-D Van Zeeland, M. A.; Heidbrink, W. W.; Nazikian, R. Nuclear Fusion, Vol. 49, Issue 6 https://doi.org/10.1088/0029-5515/49/6/065003	journal	April 2009
Theoretical analysis of energetic-ion-driven resistive interchange mode stabilization strategies using a Landau closure model Varela, J.; Ohdachi, S.; Watanabe, K. Y. Nuclear Fusion, Vol. 60, Issue 4 https://doi.org/10.1088/1741-4326/ab7213	journal	February 2020
Gyrokinetic simulation of global and local Alfvén eigenmodes driven by energetic particles in a DIII-D discharge Bass, E. M.; Waltz, R. E. Physics of Plasmas, Vol. 20, Issue 1 https://doi.org/10.1063/1.4773177	journal	January 2013
Experimental observations of enhanced radial transport of energetic particles with Alfvén eigenmode on the LHD Osakabe, M.; Yamamoto, S.; Toi, K. Nuclear Fusion, Vol. 46, Issue 10 https://doi.org/10.1088/0029-5515/46/10/S07	journal	September 2006
Direct Observation of the Structure of Global Alfvén Eigenmodes in a Tokamak Plasma Evans, T. E.; Valanju, P. M.; Benesch, J. F. Physical Review Letters, Vol. 53, Issue 18 https://doi.org/10.1103/PhysRevLett.53.1743	journal	October 1984
Dynamic neutral beam current and voltage control to improve beam efficacy in tokamaks Austin, M. E.; Bardoczi, L.; Collins, C. S. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5016160	journal	May 2018
Low-n shear Alfvén spectra in axisymmetric toroidal plasmas Cheng, C. Z.; Chance, M. S. Physics of Fluids, Vol. 29, Issue 11 https://doi.org/10.1063/1.865801	journal	January 1986
Study of the Alfven eigenmodes stability in CFQS plasma using a Landau closure model Varela, J.; Shimizu, A.; Spong, D. A. Nuclear Fusion, Vol. 61, Issue 2 https://doi.org/10.1088/1741-4326/abd072	journal	January 2021
Theoretical study of the Alfven eigenmode stability in CFETR steady state discharges Varela, J.; Huang, J.; Spong, D. A. Nuclear Fusion, Vol. 62, Issue 3 https://doi.org/10.1088/1741-4326/ac4778	journal	January 2022
Visualization of Fast Ion Phase-Space Flow Driven by Alfvén Instabilities Du, X. D.; Van Zeeland, M. A.; Heidbrink, W. W. Physical Review Letters, Vol. 127, Issue 23 https://doi.org/10.1103/PhysRevLett.127.235002	journal	December 2021
Active real-time control of Alfvén eigenmodes by neutral beam and electron cyclotron heating in the DIII-D tokamak Hu, Wenhui; Olofsson, K. E. J.; Welander, A. S. Nuclear Fusion, Vol. 58, Issue 12 https://doi.org/10.1088/1741-4326/aaddaf	journal	September 2018
Energetic ions in ITER plasmas Pinches, S. D.; Chapman, I. T.; Lauber, Ph. W. Physics of Plasmas, Vol. 22, Issue 2 https://doi.org/10.1063/1.4908551	journal	February 2015
Properties of toroidal Alfvén eigenmode in DIII-D plasma Wang, Zhixuan; Lin, Zhihong; Deng, Wenjun Physics of Plasmas, Vol. 22, Issue 2 https://doi.org/10.1063/1.4908274	journal	February 2015
A novel measurement of marginal Alfvén eigenmode stability during high power auxiliary heating in JET Tinguely, R. A.; Fil, N.; Puglia, P. G. Nuclear Fusion, Vol. 62, Issue 7 https://doi.org/10.1088/1741-4326/ac3c84	journal	April 2022
Nonlinear dynamics and transport driven by energetic particle instabilities using a gyro-Landau closure model ^* Spong, D. A.; Van Zeeland, M. A.; Heidbrink, W. W. Nuclear Fusion, Vol. 61, Issue 11 https://doi.org/10.1088/1741-4326/ac2990	journal	October 2021
Analysis of Energetic Particle Confinement in LHD Using Neutron Measurement and Simulation Codes Nuga, Hideo; Seki, Ryosuke; Ogawa, Kunihiro Plasma and Fusion Research, Vol. 14, Issue 0 https://doi.org/10.1585/pfr.14.3402075	journal	April 2019
Effects of negative triangularity shaping on energetic particle driven Alfvén eigenmodes in DIII-D ^* Ghai, Y.; Spong, D. A.; Varela, J. Nuclear Fusion, Vol. 61, Issue 12 https://doi.org/10.1088/1741-4326/ac2bc0	journal	October 2021
Analytical nonlinear collisional dynamics of near-threshold eigenmodes Duarte, V. N.; Gorelenkov, N. N. Nuclear Fusion, Vol. 59, Issue 4 https://doi.org/10.1088/1741-4326/ab0135	journal	February 2019
Experimental observation of the geodesic acoustic frequency limit for the NBI-driven Alfvén eigenmodes in TJ-II Eliseev, L. G.; Melnikov, A. V.; Ascasibar, E. Physics of Plasmas, Vol. 28, Issue 7 https://doi.org/10.1063/5.0049225	journal	July 2021
Hard magnetohydrodynamic limit in 1/3 sawtooth like activity in LHD Varela, J.; Watanabe, K. Y.; Ohdachi, S. Physics of Plasmas, Vol. 21, Issue 3 https://doi.org/10.1063/1.4867066	journal	March 2014
Alfvén eigenmode structure during off-axis neutral beam injection Tobias, B.; Bass, E. M.; Classen, I. G. J. Nuclear Fusion, Vol. 52, Issue 10 https://doi.org/10.1088/0029-5515/52/10/103009	journal	August 2012
Simulation of the TAEs’ saturation phase in the Large Helical Device: MHD burst Varela, J.; Spong, D. A.; Todo, Y. Nuclear Fusion, Vol. 62, Issue 12 https://doi.org/10.1088/1741-4326/ac8f5a	journal	October 2022
Alpha‐Alfvén local dispersion relation and solutions Hedrick, C. L.; Leboeuf, J. ‐N.; Spong, D. A. Physics of Fluids B: Plasma Physics, Vol. 4, Issue 12 https://doi.org/10.1063/1.860344	journal	December 1992
New Alfvén Continuum Gaps and Global Modes Induced by Toroidal Flow van der Holst, B.; Beliën, A. J. C.; Goedbloed, J. P. Physical Review Letters, Vol. 84, Issue 13 https://doi.org/10.1103/PhysRevLett.84.2865	journal	March 2000
Nonlinear evolution of the toroidal Alfvén instability using a gyrofluid model* Spong, D. A.; Carreras, B. A.; Hedrick, C. L. Physics of Plasmas, Vol. 1, Issue 5 https://doi.org/10.1063/1.870700	journal	May 1994
Global Alfvén modes: Theory and experiment* Turnbull, A. D.; Strait, E. J.; Heidbrink, W. W. Physics of Fluids B: Plasma Physics, Vol. 5, Issue 7 https://doi.org/10.1063/1.860742	journal	July 1993
Investigation of Alfvén eigenmodes and Energetic Particle Modes in EAST with neutral beam injection Xu, Liqing; Shen, Wei; Ren, Zhenzhen Nuclear Fusion https://doi.org/10.1088/1741-4326/abf2e2	journal	March 2021
Measurements and modeling of Alfvén eigenmode induced fast ion transport and loss in DIII-D and ASDEX Upgrade Van Zeeland, M. A.; Heidbrink, W. W.; Fisher, R. K. Physics of Plasmas, Vol. 18, Issue 5 https://doi.org/10.1063/1.3574663	journal	May 2011
Stability analysis of TJ-II stellarator NBI driven Alfvén eigenmodes in ECRH and ECCD experiments Cappa, Á.; Varela, J.; López Bruna, D. Nuclear Fusion, Vol. 61, Issue 6 https://doi.org/10.1088/1741-4326/abf74b	journal	May 2021
Stabilization of Alfvén Eigenmodes in DIII-D via Controlled Energetic Ion Density Ramp and Validation of Theory and Simulations Tang, S. X.; Carter, T. A.; Crocker, N. A. Physical Review Letters, Vol. 126, Issue 15 https://doi.org/10.1103/PhysRevLett.126.155001	journal	April 2021
Evolution of toroidal Alfvén eigenmode instability in Tokamak Fusion Test Reactor Wong, K. L.; Majeski, R.; Petrov, M. Physics of Plasmas, Vol. 4, Issue 2 https://doi.org/10.1063/1.872098	journal	February 1997
Phase-space dependent critical gradient behavior of fast-ion transport due to Alfvén eigenmodes Collins, C. S.; Heidbrink, W. W.; Podestà, M. Nuclear Fusion, Vol. 57, Issue 8 https://doi.org/10.1088/1741-4326/aa720c	journal	June 2017
Analysis of the ECH effect on EPM/AE stability in Heliotron J plasma using a Landau closure model Varela, J.; Nagasaki, K.; Kobayashi, S. Nuclear Fusion, Vol. 63, Issue 2 https://doi.org/10.1088/1741-4326/aca98e	journal	December 2022
Reversed shear Alfvén eigenmode stabilization by localized electron cyclotron heating Van Zeeland, M. A.; Heidbrink, W. W.; Nazikian, R. Plasma Physics and Controlled Fusion, Vol. 50, Issue 3 https://doi.org/10.1088/0741-3335/50/3/035009	journal	February 2008
Study of Alfven eigenmodes stability in plasma with multiple NBI driven energetic particle species Varela, J.; Spong, D. A.; Garcia, L. Physics of Plasmas, Vol. 26, Issue 6 https://doi.org/10.1063/1.5098347	journal	June 2019
Convective beam ion losses due to Alfvén eigenmodes in DIII-D reversed-shear plasmas Pace, D. C.; Fisher, R. K.; García-Muñoz, M. Plasma Physics and Controlled Fusion, Vol. 53, Issue 6 https://doi.org/10.1088/0741-3335/53/6/062001	journal	April 2011
Stability of Alfvén gap modes in burning plasmas Betti, R.; Freidberg, J. P. Physics of Fluids B: Plasma Physics, Vol. 4, Issue 6 https://doi.org/10.1063/1.860057	journal	June 1992
MHD stability of JT-60SA operation scenarios driven by passing energetic particles for a hot Maxwellian model Varela, J.; Watanabe, K. Y.; Shinohara, K. Nuclear Fusion, Vol. 60, Issue 9 https://doi.org/10.1088/1741-4326/ab9dd1	journal	August 2020
Excitation of toroidal Alfvén eigenmodes in TFTR Wong, K. L.; Fonck, R. J.; Paul, S. F. Physical Review Letters, Vol. 66, Issue 14 https://doi.org/10.1103/PhysRevLett.66.1874	journal	April 1991
Verification and validation of integrated simulation of energetic particles in fusion plasmas Taimourzadeh, S.; Bass, E. M.; Chen, Y. Nuclear Fusion, Vol. 59, Issue 6 https://doi.org/10.1088/1741-4326/ab0c38	journal	April 2019
Impact of central ECCD on steady-state hybrid scenario in DIII-D Petty, C. C.; Nazikian, R.; Van Zeeland, M. A. RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 21st Topical Conference, AIP Conference Proceedings https://doi.org/10.1063/1.4936539	conference	January 2015
Long-Term Landau-Fluid Simulation of Alfvén Eigenmode Instabilities Spong, Donald A. Plasma and Fusion Research, Vol. 9, Issue 0 https://doi.org/10.1585/pfr.9.3403077	journal	January 2014
Recent progress of Alfvén eigenmode experiments using N-NB in JT-60U tokamak Shinohara, K.; Takechi, M.; Ishikawa, M. Nuclear Fusion, Vol. 42, Issue 8 https://doi.org/10.1088/0029-5515/42/8/302	journal	August 2002
Analysis of Alfven eigenmodes destabilization by energetic particles in TJ-II using a Landau-closure model Varela, J.; Spong, D. A.; Garcia, L. Nuclear Fusion, Vol. 57, Issue 12 https://doi.org/10.1088/1741-4326/aa83c4	journal	September 2017
Beam-driven energetic particle modes in advanced tokamak plasmas Heidbrink, W. W.; Gorelenkov, N. N.; Murakami, M. Nuclear Fusion, Vol. 42, Issue 8 https://doi.org/10.1088/0029-5515/42/8/305	journal	August 2002
Introduction to the interaction between energetic particles and Alfven eigenmodes in toroidal plasmas Todo, Y. Reviews of Modern Plasma Physics, Vol. 3, Issue 1 https://doi.org/10.1007/s41614-018-0022-9	journal	December 2018
Simulation of Alfvén frequency cascade modes in reversed shear-discharges using a Landau-closure model Spong, D. A. Nuclear Fusion, Vol. 53, Issue 5 https://doi.org/10.1088/0029-5515/53/5/053008	journal	April 2013
Study of Alfvén eigenmode stability in Quasi-Poloidal Stellarator (QPS) plasma using a Landau closure model Ortiz, J.; Varela, J.; Spong, D. A. Nuclear Fusion, Vol. 63, Issue 5 https://doi.org/10.1088/1741-4326/acc25f	journal	March 2023
Theoretical analysis of the saturation phase of the 1/1 energetic-ion-driven resistive interchange mode Varela, J.; Spong, D. A.; Garcia, L. Nuclear Fusion, Vol. 61, Issue 12 https://doi.org/10.1088/1741-4326/ac26a0	journal	October 2021
Linear properties of reversed shear Alfvén eigenmodes in the DIII-D tokamak Deng, W.; Lin, Z.; Holod, I. Nuclear Fusion, Vol. 52, Issue 4 https://doi.org/10.1088/0029-5515/52/4/043006	journal	March 2012
MHD instabilities and their effects on plasma confinement in Large Helical Device plasmas Toi, K.; Ohdachi, S.; Yamamoto, S. Nuclear Fusion, Vol. 44, Issue 2 https://doi.org/10.1088/0029-5515/44/2/001	journal	January 2004
Analysis of Alfvén eigenmode destabilization by energetic particles in Large Helical Device using a Landau-closure model Varela, J.; Spong, D. A.; Garcia, L. Nuclear Fusion, Vol. 57, Issue 4 https://doi.org/10.1088/1741-4326/aa5d04	journal	March 2017
Mode coupling in a toroidal sharp-boundary plasma. I. Weak-coupling limit D'Ippolito, D. A. Plasma Physics, Vol. 22, Issue 12 https://doi.org/10.1088/0032-1028/22/12/006	journal	December 1980
Global linear and nonlinear gyrokinetic modelling of Alfvén eigenmodes in ITER Hayward-Schneider, T.; Lauber, Ph.; Bottino, A. Nuclear Fusion, Vol. 61, Issue 3 https://doi.org/10.1088/1741-4326/abdca2	journal	February 2021
Transp Breslau, Joshua; Gorelenkova, Marina; Poli, Francesca Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/dc.20180627.4	software	June 2018
Excitation of Alfvén eigenmodes by low energy beam ions in the DIII-D and JET tokamaks Nazikian, R.; Gorelenkov, N. N.; Alper, B. Physics of Plasmas, Vol. 15, Issue 5 https://doi.org/10.1063/1.2839286	journal	May 2008
Mechanisms of energetic-particle transport in magnetically confined plasmas Heidbrink, W. W.; White, R. B. Physics of Plasmas, Vol. 27, Issue 3 https://doi.org/10.1063/1.5136237	journal	March 2020
Steepest-descent moment method for three-dimensional magnetohydrodynamic equilibria Hirshman, S. P. Physics of Fluids, Vol. 26, Issue 12 https://doi.org/10.1063/1.864116	journal	January 1983
Simulation of Alfvénic avalanche onset in NSTX White, R. B.; Duarte, V. N.; Gorelenkov, N. N. Physics of Plasmas, Vol. 27, Issue 2 https://doi.org/10.1063/1.5136236	journal	February 2020
Energetic Ion Experiments in DIII-D Heidbrink, W. W. Fusion Science and Technology, Vol. 48, Issue 2 https://doi.org/10.13182/FST05-A1050	journal	October 2005
Basic physics of Alfvén instabilities driven by energetic particles in toroidally confined plasmas Heidbrink, W. W. Physics of Plasmas, Vol. 15, Issue 5 https://doi.org/10.1063/1.2838239	journal	May 2008
Analysis of Alfven eigenmode destabilization in ITER using a Landau closure model Varela, J.; Spong, D. A.; Garcia, L. Nuclear Fusion, Vol. 59, Issue 7 https://doi.org/10.1088/1741-4326/ab1ebe	journal	June 2019
Prediction of Alfvén eigenmode energetic particle transport in ITER scenarios with a critical gradient model Bass, E. M.; Waltz, R. E. Nuclear Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1741-4326/ab54fb	journal	December 2019
Loss of energetic beam ions during TAE instabilities Duong, H. H.; Heidbrink, W. W.; Strait, E. J. Nuclear Fusion, Vol. 33, Issue 5 https://doi.org/10.1088/0029-5515/33/5/I06	journal	May 1993
Alfvén eigenmode and energetic particle research in JT-60U Kimura, H.; Kusama, Y.; Saigusa, M. Nuclear Fusion, Vol. 38, Issue 9 https://doi.org/10.1088/0029-5515/38/9/304	journal	September 1998
Internal disruptions and sawtooth like activity in Large Helical Device Varela, J.; Garcia, L.; Ohdachi, S. Physics of Plasmas, Vol. 19, Issue 8 https://doi.org/10.1063/1.4740064	journal	August 2012
Subdominant modes and optimization trends of DIII-D reverse magnetic shear configurations Varela, J.; Spong, D. A.; Murakami, M. Nuclear Fusion, Vol. 59, Issue 4 https://doi.org/10.1088/1741-4326/ab0052	journal	February 2019
Recent results from deuterium experiments on the large helical device and their contribution to fusion reactor development Osakabe, Masaki; Takahashi, Hiromi; Yamada, Hiroshi Nuclear Fusion, Vol. 62, Issue 4 https://doi.org/10.1088/1741-4326/ac3cda	journal	February 2022
Effect of the tangential NBI current drive on the stability of pressure and energetic particle driven MHD modes in LHD plasma Varela, J.; Cooper, W. A.; Nagaoka, K. Nuclear Fusion, Vol. 60, Issue 2 https://doi.org/10.1088/1741-4326/ab60cf	journal	January 2020
Overview of the TJ-II stellarator research programme towards model validation in fusion plasmas Hidalgo, C.; Ascasíbar, E.; Alegre, D. Nuclear Fusion, Vol. 62, Issue 4 https://doi.org/10.1088/1741-4326/ac2ca1	journal	April 2022
The internal disruption as hard Magnetohydrodynamic limit of 1/2 sawtooth like activity in large helical device Varela, J.; Watanabe, K. Y.; Ohdachi, S. Physics of Plasmas, Vol. 19, Issue 8 https://doi.org/10.1063/1.4747534	journal	August 2012
The tokamak Monte Carlo fast ion module NUBEAM in the National Transport Code Collaboration library Pankin, Alexei; McCune, Douglas; Andre, Robert Computer Physics Communications, Vol. 159, Issue 3 https://doi.org/10.1016/j.cpc.2003.11.002	journal	June 2004
Electron cyclotron heating can drastically alter reversed shear Alfvén eigenmode activity in DIII-D through finite pressure effects Van Zeeland, M. A.; Heidbrink, W. W.; Sharapov, S. E. Nuclear Fusion, Vol. 56, Issue 11 https://doi.org/10.1088/0029-5515/56/11/112007	journal	July 2016
The effect of the fast-ion profile on Alfvén eigenmode stability Heidbrink, W. W.; Van Zeeland, M. A.; Austin, M. E. Nuclear Fusion, Vol. 53, Issue 9 https://doi.org/10.1088/0029-5515/53/9/093006	journal	August 2013
Linearized gyrofluid model of the alpha‐destabilized toroidal Alfvén eigenmode with continuum damping effects Spong, D. A.; Carreras, B. A.; Hedrick, C. L. Physics of Fluids B: Plasma Physics, Vol. 4, Issue 10 https://doi.org/10.1063/1.860386	journal	October 1992
Alfvén eigenmode stability and fast ion loss in DIII-D and ITER reversed magnetic shear plasmas Van Zeeland, M. A.; Gorelenkov, N. N.; Heidbrink, W. W. Nuclear Fusion, Vol. 52, Issue 9 https://doi.org/10.1088/0029-5515/52/9/094023	journal	September 2012
Effect of ECH/ECCD on energetic-particle-driven MHD modes in helical plasmas Yamamoto, S.; Nagasaki, K.; Nagaoka, K. Nuclear Fusion, Vol. 60, Issue 6 https://doi.org/10.1088/1741-4326/ab7f13	journal	June 2020
Fast-ion transport by Alfvén eigenmodes above a critical gradient threshold Heidbrink, W. W.; Collins, C. S.; Podestà, M. Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4977535	journal	May 2017
An investigation of beam driven Alfvén instabilities in the DIII-D tokamak Heidbrink, W. W.; Strait, E. J.; Doyle, E. Nuclear Fusion, Vol. 31, Issue 9 https://doi.org/10.1088/0029-5515/31/9/002	journal	September 1991
Noncircular Triangularity and Ellipticity-Induced Alfvén Eigenmodes Observed in JT-60U Kramer, G. J.; Saigusa, M.; Ozeki, T. Physical Review Letters, Vol. 80, Issue 12 https://doi.org/10.1103/PhysRevLett.80.2594	journal	March 1998
Modeling of the ECCD injection effect on the Heliotron J and LHD plasma stability Varela, J.; Nagasaki, K.; Nagaoka, K. Nuclear Fusion, Vol. 60, Issue 11 https://doi.org/10.1088/1741-4326/abad84	journal	September 2020
Simulations tackle abrupt massive migrations of energetic beam ions in a tokamak plasma Bierwage, Andreas; Shinohara, Kouji; Todo, Yasushi Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-05779-0	journal	August 2018
Investigation of mode activity in NBI-heated experiments of Wendelstein 7-X Slaby, C.; Äkäslompolo, S.; Borchardt, M. Nuclear Fusion, Vol. 60, Issue 11 https://doi.org/10.1088/1741-4326/ab7c28	journal	August 2020
Radial Structure of Alfvén Eigenmodes in the DIII-D Tokamak through Electron-Cyclotron-Emission Measurements Van Zeeland, M. A.; Kramer, G. J.; Austin, M. E. Physical Review Letters, Vol. 97, Issue 13 https://doi.org/10.1103/PhysRevLett.97.135001	journal	September 2006
The effects of electron cyclotron heating and current drive on toroidal Alfvén eigenmodes in tokamak plasmas Sharapov, S. E.; Garcia-Munoz, M.; Van Zeeland, M. A. Plasma Physics and Controlled Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1361-6587/aa90ee	journal	November 2017
Observation of Critical-Gradient Behavior in Alfvén-Eigenmode-Induced Fast-Ion Transport Collins, C. S.; Heidbrink, W. W.; Austin, M. E. Physical Review Letters, Vol. 116, Issue 9 https://doi.org/10.1103/PhysRevLett.116.095001	journal	February 2016
Controlling the Profile of Ion-Cyclotron-Resonant Ions in JET with the Wave-Induced Pinch Effect Mantsinen, M. J.; Ingesson, L. C.; Johnson, T. Physical Review Letters, Vol. 89, Issue 11 https://doi.org/10.1103/PhysRevLett.89.115004	journal	August 2002
Shear Alfvén continua in stellarators Spong, D. A.; Sanchez, R.; Weller, A. Physics of Plasmas, Vol. 10, Issue 8 https://doi.org/10.1063/1.1590316	journal	August 2003
Energetic particle transport and loss induced by helically-trapped energetic-ion-driven resistive interchange modes in the Large Helical Device Ogawa, K.; Isobe, M.; Sugiyama, S. Nuclear Fusion, Vol. 60, Issue 11 https://doi.org/10.1088/1741-4326/ab6da0	journal	September 2020
Stability of alpha particle driven Alfvén eigenmodes in high performance JET DT plasmas Sharapov, S. E.; Borba, D.; Fasoli, A. Nuclear Fusion, Vol. 39, Issue 3 https://doi.org/10.1088/0029-5515/39/3/307	journal	March 1999
Experimental studies of energetic-ion-driven MHD instabilities in Large Helical Device plasmas Yamamoto, S.; Toi, K.; Ohdachi, S. Nuclear Fusion, Vol. 45, Issue 5 https://doi.org/10.1088/0029-5515/45/5/003	journal	April 2005

Similar Records

Study of the Alfven eigenmodes stability in CFQS plasma using a Landau closure model

Journal Article · Wed Jan 20 00:00:00 EST 2021 · Nuclear Fusion · OSTI ID:2281092

Varela, J.; Shimizu, A.; Spong, D. A.; +2 more

Theoretical analysis of the saturation phase of the 1/1 energetic-ion-driven resistive interchange mode

Journal Article · Fri Oct 22 00:00:00 EDT 2021 · Nuclear Fusion · OSTI ID:2281092

Varela, Jacobo; Spong, Donald A.; Garcia, Luis; +4 more

Simulation of the TAEs’ saturation phase in the Large Helical Device: MHD burst

Journal Article · Tue Oct 11 00:00:00 EDT 2022 · Nuclear Fusion · OSTI ID:2281092

Varela Rodriguez, J.; Spong, Donald A.; Todo, Yasushi; +4 more

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Tokamak
CFETR
MHD
AE
energetic particles

Title: Effect of the neutral beam injector operational regime on the Alfven eigenmode saturation phase in DIII-D plasma

Citation Formats

References (100)

Similar Records

Related Subjects