A5001581292- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Fusion materials and technologies
- Material Dynamics and Properties
- Ionosphere and magnetosphere dynamics
- Superconducting Materials and Applications
- Theoretical and Computational Physics
- Laser-Plasma Interactions and Diagnostics
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Plasma Diagnostics and Applications
- Nuclear reactor physics and engineering
- Glass properties and applications
- Microstructure and mechanical properties
- Metallic Glasses and Amorphous Alloys
- Phase Equilibria and Thermodynamics
- Gene Regulatory Network Analysis
- Hydrogen embrittlement and corrosion behaviors in metals
- Cellular Automata and Applications
- Solar and Space Plasma Dynamics
- Advancements in Semiconductor Devices and Circuit Design
- Cold Fusion and Nuclear Reactions
- Fusion and Plasma Physics Studies
- Receptor Mechanisms and Signaling
King Mongkut's University of Technology Thonburi
2016-2024
King Mongkut's University of Technology North Bangkok
2021-2024
Computational Physics (United States)
2018-2024
Rice University
2012-2014
Center for Theoretical Biological Physics
2012-2014
Mahidol University
2009-2011
We compare dynamical heterogeneities in equilibrated supercooled liquids and the nonequilibrium glassy state within framework of random first order transition theory. Fluctuating mobility generation transport glass are treated by numerically solving stochastic continuum equations for fictive temperature fields that arise from an extended mode coupling theory containing activated events. spatiotemporal structures aging rejuvenating glasses lead to heterogeneity with characteristics distinct...
The remarkable strength of glasses is examined using the random first order transition theory glass transition. predicts that depends on elastic modulus but also configurational energy frozen in when prepared. stress catalysis cooperative rearrangements type responsible for supercooled liquid’s high viscosity account quantitatively measured a range metallic glasses, silica, and polymer glass.
Significance When glasses are under imposed stresses or strains, they subject to plastic deformation. Unlike their crystal counterparts, shear within the localizes in thin bands, known as bands. Forming bands can lead structural failure of whole sample and prevent using materials. In this work, we show how arise dynamically by coupling activated dynamics configurationally rearranging regions with elastic strain transport. This result also explains non-Newtonian flow glasses.
In the context of random first order transition theory we use an extended mode coupling glass that includes activated events to account for spatiotemporal structures in rejuvenating glasses. We numerically solve fluctuating dynamical equations mobility and fictive temperature fields which capture both generation through facilitation effects. Upon rejuvenating, a source high at surface initiates growth front propagates into unstable low region. The speed quantitatively agrees with experiments...
The newly developed Cs2LiYCl6:Ce crystal with 7Li-enrichment (CLYC7) scintillators had been utilized as a key component in compact neutron emission spectrometer (CNES) at the Large Helical Device (LHD). CNES was employed to enhance understanding slowing-down process of neutral-beam-injected energetic beam deuterons by measuring Doppler broadening beam-driven deuterium-deuterium neutrons. In order assess detection capabilities fusion spectroscopy and gain into energy spectrum various...
We report results of benchmarking core particle transport simulations by a collection codes widely used in modelling tokamak plasmas. Our analysis includes formulation equations, difference between electron and ion solvers, comparison modules the pellet edge gas fuelling on ITER baseline scenario. During first phase we address effects stationary phase. Firstly, are performed with identical sources, sinks, coefficients, boundary conditions prescribed flattop H-mode The transformation...
The successful operation of a tokamak requires effective and appropriate methods plasma fueling. In the development plan for Thailand Tokamak-1 (TT-1), use supersonic molecular beam injection (SMBI) has been proposed as method that can more effectively deeply deliver fueling gas compared to puffing method. this study, we used 2D fluid simulation investigate impact SMBI on transport in TT-1. Our model incorporated continuity equations, energy balance momentum equation, fuel equation fuel....
A novel Imaging Neutral Particle Analyzer (INPA) was newly installed in early 2024 to enhance the understanding of fast ion confinement on Large Helical Devices (LHDs). This diagnostic system, based a magnetic spectrometer using scintillator, provides energy-resolved radial profiles confined ions by measuring charge-exchanged neutrals escaping from plasma. The system utilizes 100 nm thick carbon foil ionize neutrals, subsequently deflecting toward scintillator via existing local field....
This study investigates the plasma performance in HT-6M tokamak using 1.5D integrated predictive modeling code BALDUR. The simulations are carried out under designed conditions, including R = 65 cm, a 20 BT 1.5 T, ne 1 × 1019 m−3 and Ip 40 - 150 kA without external heating. In these simulations, combination of turbulence neoclassical transports is used for predicting thermal particle transport. Thus, evolution current, temperature, density can be predicted condition. addition, influence...
Simulations of future Thailand tokamak plasmas are carried out using a CRONOS integrated predictive modelling code. The design the reactor is based on nominal parameters HT-6M tokamak. code consists 1D transport solver with general 2D magnetic equilibria, and includes several heat, particle impurities models as well momentum sources. In this work, combination mixed Bohm/gyro-Bohm anomalous model an NCLASS neoclassical used to calculate plasma core diffusivities. boundary condition...
The compact neutron emission spectrometers (CNES) based on conventional liquid (EJ-301) scintillation detectors were characterized in this work. CNESs employed for deuterium-deuterium spectroscopy the Large Helical Device (LHD). Prior to installation, EJ-301 at Fast Neutron Laboratory of Tohoku University. In order discriminate and γ-ray signals, charge comparison method was used. energy spectrum successfully unfolded from measured recoil proton detector using derivative unfolding technique....
Abstract Self-consistent simulations of four DEMO designs proposed by teams from China, Europe, India, and Korea are carried out using the BALDUR integrated predictive modeling code in which theory-based models used, for both core transport boundary conditions. In these simulations, a combination NCLASS neoclassical multimode (MMM95) anomalous model is used to compute transport. The taken be at top pedestal, where pedestal values described temperature based on magnetic flow shear...
Thailand Tokamak-1 (TT-1) successfully achieved its first plasma operation in early 2023. Understanding the behavior of high-energy runaway electrons (RE) during discharges is crucial TT-1 due to potential risk significant damage in-vessel components. To study RE and analyze characteristics, LaBr3(Ce) detector was employed for measuring hard X-ray emissions TT-1. In this study, we characterized laboratory then performed spectroscopy Calibration sources, including 133Ba, 137Cs, 22Na, 60Co,...
Self-consistent simulations of sawtooth oscillations on four DEMO (demonstration fusion power plant) designs, proposed by European, Indian, Chinese, and Korean teams, are carried out using the Porcelli triggering model modified version Kadomtsev magnetic reconnection coupled with BALDUR integrated code. The simulation results suggest that all crashes triggered driving force for internal kink instability overcoming fast ion stabilization found in DEMOs. Conversely, different expansions...