Sample interview questions: How do you approach the assessment and control of plasma disruptions in fusion experiments?
Sample answer:
Assessment of Plasma Disruptions:
- Real-time monitoring: Employ diagnostic techniques (e.g., magnetic probes, radiation detectors) to monitor plasma parameters (e.g., current, density, temperature) and identify disruption precursors.
- Statistical analysis: Perform statistical studies on historical disruption data to identify patterns and correlations, and develop predictive models.
- Simulations: Use numerical simulations to study the dynamics of disruptions and assess their impact on the tokamak components.
Control of Plasma Disruptions:
Active Control Methods:
- Magnetic feedback control: Introduce external magnetic fields to stabilize plasma instabilities and prevent disruptions.
- Gas injection: Injecting impurities into the plasma can increase its resistivity and reduce current density, mitigating disruptions.
- Pellet injection: Injecting pellets of frozen hydrogen isotopes can disrupt the p… Read full answer
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