A5025699111- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Fusion materials and technologies
- Nuclear Physics and Applications
- Ionosphere and magnetosphere dynamics
- Atomic and Molecular Physics
- Plasma Diagnostics and Applications
- Laser-induced spectroscopy and plasma
- Laser-Plasma Interactions and Diagnostics
Seoul National University
2021-2024
A newly developed integrated suite of codes coined as tokamak reactor automated for simulation and computation (TRIASSIC) is reported. The comprises existing plasma codes, including 1.5D/2D transport solvers neoclassical/anomalous transport, heating/cooling, cold neutral models. components in TRIASSIC are fully modularized by adopting a generic data structure its internal storage. Primary such the solver beam or electron cyclotron wave actuator were verified to standalone implementation....
Abstract This work presents a model for predicting electron energy gain from cyclotron (EC) wave-particle interactions during the breakdown phase of tokamak pre-ionization. Investigation this to infer EC requirements inevitably demands high-fidelity simulation study covering gas physics, plasma dynamics, and absorption. Under significantly low density temperature, electrons interact nonlinearly with wave which picture is distinct linear or quasilinear heating. For room temperature electrons,...
Abstract This paper describes the improvement of electromagnetic plasma burn-through model. Full circuit equations describing currents in solenoid, poloidal field coils, and toroidally conducting passive structures have been integrated into differential equation system energy particle balances DYON. enables consistent calculation time-evolving loop voltage at a position only using operation signals control room, which are current (or voltage) waveforms solenoid coils prefill gas pressure....
Dreicer generation is one of the main mechanisms runaway electron in weakly ionized plasmas. It often described as a diffusive flow from Maxwellian core into high energies under effect electric field. In this Letter we demonstrate critical role binary nature inelastic collisions plasma during tokamak startup, where some electrons experience virtually no acceleration to energy. We show that using Fokker-Planck collisional operator can underestimate rate by several orders magnitude.