Kinetic Energy Principle And Neoclassical Toroidal Torque In Tokamaks

Technical Report · Mon Nov 07 00:00:00 EST 2011

DOI:https://doi.org/10.2172/1063126· OSTI ID:1063126

Park, Jong-Kyu

It is shown that when tokamaks are perturbed the kinetic energy principle is closely related to the neoclassical toroidal torque by the action invariance of particles. Especially when tokamaks are perturbed from scalar pressure equilibria, the imaginary part of the potential energy in the kinetic energy principle is equivalent to the toroidal torque by the Neoclassical Toroidal Viscosity (NTV). A unified description therefore should be made for both physics. It is also shown in this case that the potential energy operator can be self-adjoint and thus the stability calculation can be simplified by minimizing the potential energy

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-ACO2-09CH11466
• OSTI ID: 1063126
• Report Number(s): PPPL-4706
• Country of Publication: United States
• Language: English

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