Properties of toroidal Alfvén eigenmode in DIII-D plasma
نویسندگان
چکیده
منابع مشابه
Toroidal Alfvén Eigenmode Avalanches in NSTX
The transport of fast-ions resulting from strongly non-linear Toroidal Alfvén Eigenmode avalanches has been studied experimentally and simulated with the NOVA ideal MHD code and the ORBIT code to model fast ion transport. Detailed measurements of the multi-mode structure and amplitudes have been made to benchmark NOVA calculations of eigenmodes. The ORBIT code has been used to model the fast-io...
متن کاملRadial structure of Alfvén eigenmodes in the DIII-D tokamak through electron-cyclotron-emission measurements.
The spatial structure of toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes in DIII-D is obtained from electron-cyclotron-emission measurements. Peak measured temperature perturbations are of similar magnitude for both toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes and found to be deltaT(e)/T(e) approximately equal to 0.5%. Simultaneous measurements of density fluc...
متن کاملObservation of odd toroidal Alfvén eigenmodes.
Experimental evidence is presented for the existence of the theoretically predicted odd toroidicity induced Alfvén eigenmode (TAE) from the simultaneous appearance of odd and even TAEs in a normal shear discharge of the joint European torus. The modes are observed in low central magnetic shear plasmas created by injecting lower hybrid current drive. A fast ion population was created by applying...
متن کاملLinear properties of reversed shear Alfvén eigenmodes in the DIII-D tokamak
Linear properties of the reverse shear Alfvén eigenmode (RSAE) in a well-diagnosed DIII-D tokamak experiment (discharge #142111) are studied in gyrokinetic particle simulations. Simulations find that a weakly damped RSAE exists due to toroidal coupling and other geometric effects. The mode is driven unstable by density gradients of fast ions from neutral beam injection. Various damping and driv...
متن کاملIV . Calculation of toroidal rotation profiles in DIII - D using neoclassical viscosity
IV. Calculation of toroidal rotation profiles in DIII-D using neoclassical viscosity (DoE Grant ER54538) W. M. Stacey, R. W. Johnson and J. Mandrekas (to be published in Physics of Plasmas, 2006) Abstract Momentum and particle balance and neoclassical viscosity were applied to calculate the radial profile of toroidal rotation in several DIII-D [J. Luxon, Nucl. Fusion, 42, 614 (2002)] discharges...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2015
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.4908274