Sample interview questions: How do you approach the optimization of plasma confinement and stability in fusion devices?
Sample answer:
Approaches to Plasma Confinement and Stability Optimization in Fusion Devices
Diagnostic and Experimental Techniques:
- Deploy advanced diagnostics to monitor plasma parameters, such as temperature, density, magnetic field strength, and turbulence.
- Conduct comprehensive experimental campaigns to identify key factors influencing confinement and stability.
- Utilize numerical simulations to model plasma behavior and guide experimental design.
Geometric and Magnetic Field Configurations:
- Optimize the shape and aspect ratio of the plasma vessel to enhance particle confinement and reduce instabilities.
- Employ advanced magnetic field configurations, such as stellarators and heliotrons, to improve stability and confinement time.
- Investigate innovative coil designs and current profile control techniques to enhance magnetic confinement.
Plasma Heating and Current Drive:
- Develop effective heating methods, such as electron cyclotron heating (ECH) and neutral beam injection (NBI), to increase plasma temperature and reduce impurities.
- Implement advanced current drive techniques, such as lower hybrid current drive (LHCD) and ion cyclotron rang… Read full answer
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