A5039236306- Magnetic confinement fusion research
- Electrostatic Discharge in Electronics
- Pulsed Power Technology Applications
- Power System Reliability and Maintenance
- Advanced Algorithms and Applications
- Fusion materials and technologies
- Plasma Diagnostics and Applications
- Laser-Plasma Interactions and Diagnostics
- Gyrotron and Vacuum Electronics Research
- Optimal Power Flow Distribution
- Advanced Sensor and Control Systems
- Ionosphere and magnetosphere dynamics
- Smart Grid and Power Systems
- Amphibian and Reptile Biology
- Particle accelerators and beam dynamics
- Electric Power System Optimization
- Lightning and Electromagnetic Phenomena
- Nuclear Physics and Applications
- Power Systems and Technologies
- Superconducting Materials and Applications
- Species Distribution and Climate Change
- Industrial Automation and Control Systems
- Animal Behavior and Reproduction
- Advanced Computational Techniques and Applications
Northwest Institute of Nuclear Technology
2020-2023
Shanghai Electric (China)
2019-2020
University of California, Irvine
2018-2019
Princeton Plasma Physics Laboratory
2016-2017
This paper reports verification and validation of linear simulations Alfven eigenmodes in the current ramp phase DIII-D L-mode discharge #159243 using gyrokinetic, gyrokinetic-MHD hybrid, eigenvalue codes.Using a classical fast ion profile, all simulation codes find that reversed shear (RSAE) are dominant instability.The real frequencies from have coefficient variation less than 5% for most unstable modes with toroidal mode number n = 4 5.The simulated RSAE agree experimental measurements if...
A Synthetic Diagnostics Platform (SDP) for fusion plasmas has been developed which provides state of the art synthetic reflectometry, beam emission spectroscopy, and Electron Cyclotron Emission (ECE) diagnostics. Interfaces to plasma simulation codes GTC, XGC-1, GTS, M3D-C1 are provided, enabling detailed validation these codes. In this paper, we give an overview SDP's capabilities, introduce diagnostic modules. recently ECE Imaging module self-consistently includes refraction, diffraction,...
Author(s): Wang, Y; Tobias, B; Chang, YT; Yu, JH; Li, M; Hu, F; Chen, Mamidanna, Phan, T; Pham, AV; Gu, J; Liu, X; Zhu, Domier, CW; Shi, L; Valeo, E; Kramer, GJ; Kuwahara, D; Nagayama, Mase, A; Luhmann, NC | Abstract: Electron cyclotron emission (ECE) imaging is a passive radiometric technique that measures electron temperature fluctuations; and microwave reflectometry (MIR) an active radar density fluctuations. Microwave diagnostic instruments employing these techniques have made important...
Synthetic diagnostics are aimed at simulating the response of diagnostic systems under actual experimental scenarios and key to drawing quantitative inferences from data. The synthetic Electron Cyclotron Emission Imaging (ECEI) is suitable for evaluation improvement arising application Field Curvature Adjustment (FCA) lenses in design upgraded Experimental Advanced Superconducting Tokamak (EAST) tokamak ECEI system. In previous systems, a curved image plane inevitable optics comprising only...
MV pulsed switch plays a key role as the transfer in large electromagnetic pulse (EMP) simulators. To broaden range of self-triggering time, novel spark-discharge pre-ionization switch, which main gap electric field is superposed at trigger to let electrons its spark channel also become initial electrons, proposed and tested. The design idea is: always exist after breakdown, injection time should have more negligible effect on reducing jitter. experiment results under pulses with rise ~100ns...
Abstract The demand for reliable power supply in large cities is the major concern both consumers and company, outages have uprising influence on economic losses social impacts. With continuing growth of underground cable ratio Shanghai, medium-voltage distribution network structures are experiencing changes. choice grounding method has considerable impact operation safety system reliability. It crucial to carry out in-depth systematic analysis different modes. This paper analyzes technical...
In this paper, the design of a self-developed EMP simulator with 5 m height and an inverted conducting mono-cone antenna cone half-angle 32° is introduced. The experimental region circular area 25 in diameter around vertex. Two feeding modes, feed-in over ground under ground, are realized by two different high-voltage pulse sources. It can be concluded through radiation field testing that waveform generated has rise time 2–3 ns half-width about ns, meeting specifications IEC61000-2-9...
Abstract As an important measure for structure optimization, the network reconfiguration has been drawing attention of scholars at home and abroad. At present, general goal is to reduce line loss achieving load balance. In this paper, reconstruction methods distribution considering closed loop constraints proposed from perspective transfer between different loops improve system reliability. After Dongjing Town verification, method shown theoretical significance high practical value.
The adjustment operation is crucial to power distribution network dispatching department. However, the current scheme mainly based on experience and simple calculation of operation. As scale number accessing user increases, wiring also becomes complicated. existing manual-based mode method not only inefficient, but difficult achieve optimal status. In order solve complex large-scale system, this paper presents fast supply reliability algorithm its optimization strategy, proposing strategy...
Multi-stage compression system need the transfer switch work stably under input pulse. A pulsed gas was tested pulse with ~100ns rise time to verify its breakdown characteristics as operating pressure varied from 0.1MPa 0.7MPa in N2. Front edge breakdown, back and no-breakdown phenomena all occurred it hardly possible obtain high efficiency stability simultaneously self-breakdown mode. Breakdown delay could be managed stabilize around ~95ns a jitter can reduced 2ns~4ns when self-triggered...
In order to provide a Marx generator with pulses adjustable amplitude of 50 ~ 100kV, leading edge less than 30ns and half height width more 200ns, trigger unilateral charging is designed. The whole circuit simulation model established, the influence spurious capacitance switch inductance on output waveform analyzed by simulation. functions parameters are obtained fitting.