Results 11 to 20 of about 20,493 (125)

Drift-sound and drift-Alfvén eigenmodes in toroidal plasmas [PDF]

, 2009
Equations describing eigenmodes with the frequencies of the order of the geodesic acoustic frequency and the electron/ion diamagnetic frequency in toroidal plasmas are derived and analyzed, a code solving them is developed.
Yu. V. Yakovenko, Yakovenko, Y., Werner, A., Ya. I. Kolesnichenko, V. V. Lutsenko, J. Geiger, Geiger, J., Thomsen, H., Lutsenko, V., A. Werner, Weller, A., A. Weller, H. Thomsen, Kolesnichenko, Y.   +13 more
core   +1 more source

Self-Consistent Simulation of the Excitation of Compressional Alfvén Eigenmodes and Runaway Electron Diffusion in Tokamak Disruptions

, 2023
The data set consists of the figures in a manuscript titled "Self-consistent simulation of compressional Alfvén eigenmodes excitation and runaway electron diffusion in tokamak disruptions", and plotting script used for figure generation.The data set ...
Jardin, Stephen, Chang Liu, Lvovskiy, Andrey, Paz-Soldan, Carlos, Carlos Paz-Soldan, Amitava Bhattacharjee, Andrey Lvovskiy, Stephen C. Jardin, Bhattacharjee, Amitava, Liu, Chang   +9 more
core   +1 more source

Review of the NPA Diagnostic Application at Globus-M/M2

Atoms, 2023
The application of a neutral particle analyzer (NPA) diagnostic at the Globus-M/M2 spherical tokamaks is discussed. Physical principles of the diagnostic are reviewed. Two general approaches—active and passive measurements—are described.
Nikolai N. Bakharev, Andrey D. Melnik, Fedor V. Chernyshev   +2 more
doaj   +1 more source

Observation of beta-induced Alfvén eigenmodes in the DIII-D tokamak [PDF]

, 1993
Energetic ions can drive Alfvén gap modes unstable, causing large losses of fast ions. Toroidicity-induced Alfvén eigenmodes (TAE) were expected to disappear into the shear Alfvén continuum and become stable as the plasma beta increased.
Heidbrink, WW, Chu, MS, Strait, EJ, Turnbull, AD, A. D. Turnbull, M. S. Chu, E. J. Strait, W. W. Heidbrink   +7 more
core   +1 more source

Modelling of energetic particle drive and damping effects on TAEs in AUG experiment with ECCD

Nuclear Fusion, 2023
The impact of electron cyclotron current drive (ECCD)-driven current on toroidicity-induced Alfvén eigenmodes (TAEs) in experiments on the AUG tokamak is investigated numerically. The dynamical evolution of the plasma profiles and equilibria are modelled
R. Calado, F. Nabais, S.E. Sharapov, P. Schneider, Ye. Kazakov, M. Garcia-Muñoz, A. Snicker, J. Ferreira, R. Coelho, M. Dreval, J. Fuertes, J. Galdon-Quiroga, J. Gonzalez-Martin, A. Karpushov, J. Stober, G. Tardini, M.A. Van Zeeland, the ASDEX Upgrade Team   +17 more
doaj   +1 more source

Radial Structure of Alfvén Eigenmodes in the DIII-D Tokamak through Electron-Cyclotron-Emission Measurements [PDF]

, 2006
The spatial structure of toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes in DIII-D is obtained from electron-cyclotron-emission measurements.
Wang, G, Austin, ME, Heidbrink, WW, Solomon, WM, Van Zeeland, MA, Boivin, RL, Makowski, MA, Nazikian, R, Kramer, GJ, McKee, GR   +9 more
core   +1 more source

On nonlinear scattering of drift wave by toroidal Alfvén eigenmode in tokamak plasmas

Nuclear Fusion, 2023
Using electron drift wave (eDW) as a paradigm model, we have investigated analytically direct wave–wave interactions between a test DW and ambient toroidal Alfvén eigenmodes (TAEs) in toroidal plasmas, and their effects on the stability of the eDW.
Liu Chen, Zhiyong Qiu, Fulvio Zonca
doaj   +1 more source

Double Gap Alfvén Eigenmodes: Revisiting Eigenmodes Interaction with the Alfvén Continuum [PDF]

, 2005
A new type of global shear Alfvén Eigenmode is found in tokamak plasmas where the mode localization is in the region intersecting the Alfvén continuum.
Gorelenkov, N. N.
core   +1 more source

Parametric study of Alfvénic instabilities driven by runaway electrons during the current quench in DIII-D

Nuclear Fusion, 2023
To avoid or mitigate runaway electron (RE) beams in ITER, RE-driven instabilities are actively studied as a complimentary technique to massive material injection.
A. Lvovskiy, C. Paz-Soldan, N.W. Eidietis, A. Dal Molin, G.H. DeGrandchamp, E.M. Hollmann, J.B. Lestz, C. Liu, M. Nocente, D. Shiraki, X.D. Du   +10 more
doaj   +1 more source

Radial Localization of Toroidicity-Induced Alfvén Eigenmodes [PDF]

, 2013
Linear gyrokinetic simulation of fusion plasmas finds a radial localization of the toroidal Alfvén eigenmodes (TAEs) due to the nonperturbative energetic particle (EP) contribution.
王直轩, Tobias, Benjamin, Heidbrink, WW, Austin, ME, Lin, Zhihong, Holod, Ihor, Wang, Zhixuan, Van Zeeland, Michael, 林志宏   +8 more
core   +1 more source