21 citations · 128 across the 7 of their papers we have counts for
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Theoretical analysis of energetic-ion-driven resistive interchange mode stabilization strategies using a Landau closure model
J. Varela, S. Ohdachi, K. Y. Watanabe +3
The aim of the present study is to perform a theoretical analysis of different strategies to stabilize energetic-ion-driven resistive interchange mode (EIC) in LHD plasma. We use a…
Modeling of the ECCD injection effect on the Heliotron J and LHD plasma stability
J. Varela, K. Nagasaki, K. Nagaoka +6
The aim of the study is to analyze the stability of the Energetic Particle Modes (EPM) and Alfven Eigenmodes (AE) in Helitron J and LHD plasma if the electron cyclotron current dri…
Theoretical studies of equilibrium beta limit in heliotron plasmas
Y. Suzuki, K. Y. Watanabe, S. Sakakibara +2
In this study, the MHD equilibrium limit of LHD plasmas is studied using a 3D MHD equilibrium calculation code, HINT, which is an initial value solver based on the relaxation metho…
Effect of the tangential NBI current drive on the stability of pressure and energetic particle driven MHD modes in LHD plasma
J. Varela, W. A. Cooper, K. Nagaoka +5
The aim of the present study is to analyze the stability of the pressure gradient driven modes (PM) and Alfven eigenmodes (AE) in the Large Helical Device (LHD) plasma if the rotat…
Analysis of the MHD stability and energetic particles effects on EIC events in LHD plasma using a Landau-closure model
J. Varela, D. A. Spong, L. Garcia +3
The aim of this study is to perform a theoretical analysis of the magnetohydrodynamic (MHD) stability and energetic particle effects on a LHD equilibria, calculated during a discha…
Magnetic turbulence and pressure gradient feedback effect of the mode soft-hard MHD limit in Large Helical Device
J. Varela, K. Y. Watanabe, S. Ohdachi +1
The aim of this study is to analyze the feedback process between the magnetic turbulence and the pressure gradients in LHD inward-shifted configurations as well as its role in the…
Hard MHD limit in sawtooth like activity in LHD
J. Varela, K. Y. Watanabe, S. Ohdachi +1
The optimization of LHD discharges in inward-shifted configurations with sawtooth like activity is an open issue. These relaxation events limit the LHD performance driving a…