Physics of Tokamaks

Scope of questions for State exams of Master's degree program

Branch: Physics of Plasma and Thermonuclear Fusion

Subject: Physics of Tokamaks

Subjects regarding the questions:

  • 02FT – Physics of Tokamaks


1. Plasma and magnetic field equilibrium in tokamaks – magnetic field lines, magnetic surfaces, electric current density, Grad-Shafranov equation
2. Plasma and magnetic field equilibrium in tokamaks – solution of the Grad-Shafranov equation, implications, request for the vertical field, Pfirsch-Schlüter currents
3. Importance of the toroidal magnetic field, and the electric current orientation from the point of view of the grad B drift, and the trapped particles; consequences for the tokamak operation
4. Safety factor, field periodicity and magnetic islands, bootstrap current
5. Electric field and electric current in tokamaks, plasma rotation
6. Electromagnetic radiation of plasma (microwaves to gamma), line emission from the high-temperature plasma
7. Transport in tokamaks – neoclassical diffusion versus anomalous diffusion, dimensionless values, scaling
8. Plasma heating (interaction of beams and electromagnetic heating waves with plasma in tokamaks), electric current drive
9. Edge plasma physics, divertor regimes, plasma-wall interactions
10. Plasma instabilities in tokamaks