13 citations · 27 across the 6 of their papers we have counts for
7 papers
A Pre-trained Variational Autoencoder for Gyrokinetic Plasma Turbulence Surrogate Modeling
Minglei Yang, Marshall Nicholson, Diego Del-Castillo-Negrete +2
Machine learning surrogate models offer a promising path toward accelerating plasma turbulence simulations. We present PreVAE-Turb, a surrogate modeling framework that leverages pr…
An efficient probabilistic scheme for the exit time probability of -stable Lévy process
Minglei Yang, Diego del-Castillo-Negrete, Guannan Zhang
The α-stable Lévy process, commonly used to describe Lévy flight, is characterized by discontinuous jumps and is widely used to model anomalous transport phenomena. In this study,…
Runaway electron interactions with whistler waves in tokamak plasmas: energy-dependent transport scaling
Yashika Ghai, D. Del-Castillo-Negrete, D. A. Spong +1
Resonant interactions between high energy runaway electrons (REs) and whistler waves are a promising mechanism for RE mitigation in tokamak plasmas. While prior studies have largel…
Generative AI Models for Learning Flow Maps of Stochastic Dynamical Systems in Bounded Domains
Minglei Yang, Yanfang Liu, Diego del-Castillo-Negrete +2
Simulating stochastic differential equations (SDEs) in bounded domains, presents significant computational challenges due to particle exit phenomena, which requires accurate modeli…
Effect of the neutral beam injector operational regime on the Alfven eigenmode saturation phase in DIII-D plasma
J Varela, D A Spong, L Garcia +11
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. The anal…
Off-axis runaway-electron seed formation, growth and suppression
L. F. Delgado-Aparicio, D. Del-Castillo-Negrete, N. C. Hurst +11
Novel x-ray detection technology enabled the first profile measurements of the birth and growth dynamics of runaway electrons (REs) at the edge of tokamaks during quiescent RE stud…
Spatially-dependent modeling and simulation of runaway electron mitigation in DIII-D
M. T. Beidler, D. del-Castillo-Negrete, L. R. Baylor +2
New simulations with the Kinetic Orbit Runaway electron (RE) Code KORC show RE deconfinement losses to the wall during plasma scrape off are the primary current dissipation mechani…