25 citations · 65 across the 8 of their papers we have counts for
10 papers
Performance Optimization and Comparative Analysis of Generative AI Models on Advanced Accelerators
Amitash Nanda, Javier Hernandez Nicolau, Madhusudan Gujral +3
Generative AI models, such as Large Language Models (LLMs) and diffusion models, have demonstrated impressive performance across a wide range of tasks. Despite these advances, depl…
Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR
Xishuo Wei, Javier H Nicolau, Gyungjin Choi +8
Gyrokinetic simulations are utilized to study effects of magnetic islands on the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with resonant magnetic perturbations…
Saturation of fishbone instability through zonal flows driven by energetic particle transport in tokamak plasmas
G. Brochard, C. Liu, X. Wei +17
Gyrokinetic and kinetic-MHD simulations are performed for the fishbone instability in the DIII-D discharge #178631, chosen for validation of first-principles simulations to predict…
Helically-trapped electron mode in optimized stellarator
Javier H Nicolau, Xishuo Wei, Pengfei Liu +2
Global gyrokinetic simulations find a strong helically-trapped electron mode (HTEM) driven by density gradients in the optimized stellarator W7-X fusion experiment. The eigenmode s…
Saturation of fishbone instability by self-generated zonal flows in tokamak plasmas
G. Brochard, C. Liu, X. Wei +13
Gyrokinetic simulations of the fishbone instability in DIII-D tokamak plasmas find that self-generated zonal flows can dominate the nonlinear saturation by preventing coherent stru…
Verification and validation of gyrokinetic and kinetic-MHD simulations for internal kink instability in DIII-D tokamak
G. Brochard, J. Bao, C. Liu +14
Verification and validation of the internal kink instability in tokamak have been performed for both gyrokinetic (GTC) and kinetic-MHD codes (GAM-solver, M3D-C1-K, NOVA, XTOR-K). U…
Formulation and verification of multiscale gyrokinetic simulation of kinetic-MHD processes in toroidal plasmas
Xishuo Wei, Pengfei Liu, Gyungjin Choi +11
A comprehensive gyrokinetic simulation model has been implemented in the global toroidal gyrokinetic code (GTC) and verified for studying low-frequency waves and turbulence in magn…
The impact of heating power on radial heat transport in W7-X
B. Ph. van Milligen, U. Hoefel, M. Hirsch +3
The understanding of the outward radial transport of heat in magnetic confinement fusion devices is a priority for the development of economically viable fusion reactors. Here, we…
The impact of rational surfaces on radial heat transport in TJ-II
B. Ph. van Milligen, J. H. Nicolau, L. García +3
In this work, we study the outward propagation of temperature perturbations. For this purpose, we apply an advanced analysis technique, the Transfer Entropy, to ECE measurements pe…
Spin and charge thermopower of resonant tunneling diodes
Javier H. Nicolau, David Sanchez
We investigate thermoelectric effects in quantum well systems. Using the scattering approach for coherent conductors, we calculate the thermocurrent and thermopower both in the spi…