scholarly journals Multi-field/-scale interactions of turbulence with neoclassical tearing mode magnetic islands in the DIII-D tokamak

2017 ◽  
Vol 24 (5) ◽  
pp. 056106 ◽  
Author(s):  
L. Bardóczi ◽  
T. L. Rhodes ◽  
A. Bañón Navarro ◽  
C. Sung ◽  
T. A. Carter ◽  
...  
Keyword(s):  
Magnetic Islands ◽  
Tearing Mode ◽  
Field Scale ◽  
Scale Interactions ◽  
Neoclassical Tearing Mode

Shrinking of core neoclassical tearing mode magnetic islands due to edge localized modes and the role of ion-scale turbulence in island recovery in DIII-D

2017 ◽  
Vol 24 (6) ◽  
pp. 062503 ◽  
Author(s):  
L. Bardóczi ◽  
T. L. Rhodes ◽  
T. A. Carter ◽  
R. J. La Haye ◽  
A. Bañón Navarro ◽  
...  
Keyword(s):  
Magnetic Islands ◽  
Tearing Mode ◽  
Localized Modes ◽  
Edge Localized Modes ◽  
Scale Turbulence ◽  
Neoclassical Tearing Mode

scholarly journals Suppression of neoclassical tearing mode instability at the initial stage by electron cyclotron current drive

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035212
Author(s):  
Zhen Yang ◽  
Bin Wu ◽  
Yuanlai Xie ◽  
Yuqing Chen ◽  
Hongming Zhang ◽  
...  
Keyword(s):  
Electron Cyclotron ◽  
Current Drive ◽  
Tearing Mode ◽  
Mode Instability ◽  
Initial Stage ◽  
Neoclassical Tearing Mode

Numerical study on neoclassical tearing mode stabilization via minimum seeking method for the island width growth rate

2015 ◽  
Vol 55 (2) ◽  
pp. 023006 ◽  
Author(s):  
M. Kim ◽  
Kyungjin Kim ◽  
M.G. Yoo ◽  
D.H. Na ◽  
T.S. Hahm ◽  
...  
Keyword(s):  
Growth Rate ◽  
Numerical Study ◽  
Tearing Mode ◽  
Neoclassical Tearing Mode ◽  
Mode Stabilization

scholarly journals Fitting of the Rutherford Equation for Neoclassical Tearing Mode stabilisation in ASDEX Upgrade

2005 ◽  
Vol 25 ◽  
pp. 266-273 ◽  
Author(s):  
L Urso ◽  
M Maraschek ◽  
H Zohm ◽  
the ASDEX Upgrade Team
Keyword(s):  
Tearing Mode ◽  
Neoclassical Tearing Mode

Neoclassical tearing mode (NTM) magnetic spectrum and magnetic coupling in JET tokamak

2010 ◽  
Vol 52 (7) ◽  
pp. 075001 ◽  
Author(s):  
M Baruzzo ◽  
B Alper ◽  
T Bolzonella ◽  
M Brix ◽  
P Buratti ◽  
...  
Keyword(s):  
Magnetic Coupling ◽  
Tearing Mode ◽  
Magnetic Spectrum ◽  
Neoclassical Tearing Mode

Possible resolution of the “main intrigue” of the neoclassical tearing mode theory

2000 ◽  
Vol 7 (8) ◽  
pp. 3474-3475 ◽  
Author(s):  
A. B. Mikhailovskii ◽  
V. S. Tsypin ◽  
I. C. Nascimento ◽  
R. M. O. Galvão
Keyword(s):  
Tearing Mode ◽  
Mode Theory ◽  
Neoclassical Tearing Mode

Control of Heat and Mass Transfers Due to Tearing Mode-Based Magnetic Islands During Disruption Phase in IR-T1 Tokamak

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
R. Sadeghi ◽  
A. Salar Elahi ◽  
M. Ghoranneviss ◽  
M. K. Salem
Keyword(s):  
Energy Content ◽  
Singular Value ◽  
Mode Analysis ◽  
Magnetic Fluctuations ◽  
Magnetic Islands ◽  
Tearing Mode ◽  
Tearing Modes ◽  
Complete Disruption ◽  
Value Decomposition ◽  
Mass Transfers

A structural change of perturbed magnetic configurations (such as magnetic islands) during disruption phase in IR-T1 tokamak was studied. The singular value decomposition (SVD) mode analysis and the (m,n) modes identification were presented. We also presented the SVD technique to analyze the tokamak magnetic fluctuations, time evolution of magnetohydrodynamics (MHD) modes, spatial structure of each time vector, and the energy content of each modes. We also considered different scenarios for plasma from steady-state to predisruption, complete disruption, creation of tearing modes, and finally magnetic islands.

Magnetic island suppression by electron cyclotron current drive as converse of a forced reconnection problem

2018 ◽  
Vol 84 (3) ◽  
Author(s):  
D. Grasso ◽  
D. Borgogno ◽  
L. Comisso ◽  
E. Lazzaro
Keyword(s):  
Robust Control ◽  
Control Strategy ◽  
Electron Cyclotron ◽  
Current Drive ◽  
Magnetic Islands ◽  
Tearing Mode ◽  
Magnetic Island ◽  
Technical Approach ◽  
Physical Conditions ◽  
Secondary Instabilities

This paper addresses one aspect of the problem of the suppression of tearing mode magnetic islands by electron cyclotron current drive (ECCD) injection, formulating the problem as the converse of a forced reconnection problem. New physical conditions are discussed which should be considered in the technical approach towards a robust control strategy. Limits on the ECCD deposition are determined to avoid driving the system into regimes where secondary instabilities develop. Numerical simulations confirming the theory are also presented.

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