Results 1 to 10 of about 21,984 (205)

A promising approach to steady-state fusion: High-temperature superconducting strong-field stellarator with precise omnigenity [PDF]

The Innovation
The stellarator has inherent advantages over the tokamak in achieving steady-state operation, especially due to its absence of disruptions and lack of need for current drive and the associated recirculating power.
Guosheng Xu, Zhiyuan Lu, Dehong Chen, Baonian Wan   +3 more
doaj   +2 more sources

A Real Time Bolometer Tomographic Reconstruction Algorithm in Nuclear Fusion Reactors

Mathematics, 2021
In tokamak nuclear fusion reactors, one of the main issues is to know the total emission of radiation, which is mandatory to understand the plasma physics and is very useful to monitor and control the plasma evolution.
Augusto Montisci, Sara Carcangiu, Giuliana Sias, Barbara Cannas, Alessandra Fanni   +4 more
doaj   +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

Resonant interaction between runaway electrons and the toroidal magnetic field ripple in TCV

Nuclear Fusion, 2023
This work explains the anomalously high runaway electron (RE) pitch angles inferred in the flat-top of dedicated Tokamak à Configuration Variable (TCV) experiments.
T.A. Wijkamp, M. Hoppe, J. Decker, B.P. Duval, A. Perek, U. Sheikh, I.G.J. Classen, R.J.E. Jaspers, the TCV team   +8 more
doaj   +1 more source

Inference of main ion particle transport coefficients with experimentally constrained neutral ionization during edge localized mode recovery on DIII-D

Nuclear Fusion, 2023
The plasma and neutral density dynamics after an edge localized mode are investigated and utilized to infer the plasma transport coefficients for the density pedestal.
A.M. Rosenthal, J.W. Hughes, F.M. Laggner, T. Odstrčil, A. Bortolon, T.M. Wilks, F. Sciortino   +6 more
doaj   +1 more source

Disruption prediction for future tokamaks using parameter-based transfer learning

Communications Physics, 2023
Tokamaks are the most promising way for nuclear fusion reactors. Disruption in tokamaks is a violent event that terminates a confined plasma and causes unacceptable damage to the device.
Wei Zheng, Fengming Xue, Zhongyong Chen, Dalong Chen, Bihao Guo, Chengshuo Shen, Xinkun Ai, Nengchao Wang, Ming Zhang, Yonghua Ding, Zhipeng Chen, Zhoujun Yang, Biao Shen, Bingjia Xiao, Yuan Pan   +14 more
doaj   +1 more source

Modelling of ohmic startup and runaway electron formation in support of JT-60SA initial operation

Nuclear Fusion, 2022
The plasma startup with ITER-relevant sub-mPa neutral pressures in the JT-60SA superconducting tokamak is studied using a zero-dimensional (0D) power balance model for the plasma burn-through phase.
A. Matsuyama, T. Wakatsuki, S. Inoue, Y. Yamamoto, M. Yoshida, H. Urano   +5 more
doaj   +1 more source

Neutronics Simulations for DEMO Diagnostics

Sensors, 2023
One of the main challenges in the development of a plasma diagnostic and control system for DEMO is the need to cope with unprecedented radiation levels in a tokamak during long operation periods.
Raul Luís, Yohanes Nietiadi, Antonio Quercia, Alberto Vale, Jorge Belo, António Silva, Bruno Gonçalves, Artur Malaquias, Andrei Gusarov, Federico Caruggi, Enrico Perelli Cippo, Maryna Chernyshova, Barbara Bienkowska, Wolfgang Biel   +13 more
doaj   +1 more source

Zonal flow excitation in electron-scale tokamak turbulence

Nuclear Fusion, 2023
The derivation of an intermediate-scale gyrokinetic-electron theory in nonuniform tokamak plasmas (Chen et al 2021 Nucl. Fusion 61 https://doi.org/10.1088/1741-4326/abf81a ) has shown that a Navier–Stokes type nonlinearity couples electron-temperature ...
Stefan Tirkas, Haotian Chen, Gabriele Merlo, Frank Jenko, Scott Parker   +4 more
doaj   +1 more source

Unveiling the Significance of Correlations in K-Space and Configuration Space for Drift Wave Turbulence in Tokamaks

Plasma, 2023
Turbulence and transport phenomena play a crucial role in the confinement and stability of tokamak plasmas. Turbulent fluctuations in certain physical quantities, such as density or temperature fluctuations, can have a wide range of spatial scales, and ...
Jan Weiland, Tariq Rafiq, Eugenio Schuster   +2 more
doaj   +1 more source