Results 1 to 10 of about 34,895 (295)

Enhanced sensitivity in nonlinear parity-time symmetric silicon micromechanical resonators [PDF]

Microsystems & Nanoengineering
Silicon resonant sensors are essential to a wide range of applications that involve the detection of pressure, acceleration, and magnetic fields.
Yu-Jue Xie, Li-Feng Wang, Man-Na Zhang, Rui Wang, Qing-An Huang   +4 more
doaj   +2 more sources

LC Resonant-Based Method for Permeability Interference Suppression in Magnetized Pipeline Eddy Current Testing [PDF]

Sensors
In the eddy current testing (ECT) of magnetized ferromagnetic pipelines, permeability perturbations near defects cause magnetic distortion that primarily modulates the imaginary part of the ECT sensor’s impedance, leading to confusion between inner and ...
Lin Su, Yuxuan Li, Tong Cao, Shengping Li, Jie Zhang   +4 more
doaj   +2 more sources

Taming harmful bursts and heat flux in high-confinement tokamak plasmas [PDF]

Nature Communications
A major challenge in tokamak fusion research is first-wall erosion caused by steady heat loads and sudden energy bursts known as edge-localized modes. Divertor detachment reduces steady-state heat flux, while resonant magnetic perturbations can suppress ...
Q. M. Hu, H. Q. Wang, M. Navarro, H. H. Wang, D. Eldon, S. Gu, X. X. Ma, H. Frerichs, F. Scotti, L. Wang, R. S. Wilcox, T. M. Wilks, A. Bortolon, L. Ceelen, F. Effenberg, X. Z. Gong, M. N. Jia, S. K. Kim, C. J. Lasnier, A. W. Leonard, K. D. Li, N. C. Logan, Q. Ma, R. Maingi, L. Y. Meng, A. L. Moser, T. H. Osborne, C. Paz-Soldan, M. W. Shafer, Y. W. Sun, S. M. Yang, C. Ye   +31 more
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Understanding the effect resonant magnetic perturbations have on ELMs [PDF]

Plasma Physics and Controlled Fusion, 2013
All current estimations of the energy released by type I ELMs indicate that, in order to ensure an adequate lifetime of the divertor targets on ITER, a mechanism is required to decrease the amount of energy released by an ELM, or to eliminate ELMs altogether.
Kirk, A, Chapman, I T, Evans, T E, Ham, C, Harrison, J R, Huijsmans, G, Liang, Y, Liu, Y Q, Loarte, A, Suttrop, W, Thornton, A J   +10 more
openaire   +3 more sources

Pedestal collapse by resonant magnetic perturbations

Nuclear Fusion, 2021
Abstract Pedestal collapse (i.e., the complete loss of the edge transport barrier (ETB)) in DIII-D H-mode plasmas occurs when resonant magnetic perturbations (RMPs) penetrate the steep gradient region at the plasma edge. Normally, RMP driven magnetic islands can occur at the top and bottom of the H-mode pedestal and these islands ...
R. Nazikian, Q. Hu, A. Ashourvan, D. Eldon, T.E. Evans, B.A. Grierson, N.C. Logan, D.M. Orlov, J.-K. Park, C. Paz-Soldan, F.M. Poli, Q. Yu   +11 more
openaire   +3 more sources

Plasma turbulence simulations in a diverted tokamak with applied resonant magnetic perturbations

Nuclear Fusion, 2023
The first results of three-dimensional, flux-driven, electrostatic, global, two-fluid turbulence simulations of a diverted tokamak configuration with applied resonant magnetic perturbations generated by a set of saddle coils are presented.
T. Boinnard, A.J. Coelho, J. Loizu, P. Ricci   +3 more
doaj   +1 more source

Suppressing magnetic island growth by resonant magnetic perturbation [PDF]

Nuclear Fusion, 2018
The effect of externally applied resonant magnetic perturbations (RMPs) on the growth of magnetic islands is investigated based on two-fluid equations. It is found that if the local bi-normal electron fluid velocity at the resonant surface is sufficiently large, static RMPs of the same helicity and of moderate amplitude can suppress the growth of ...
Yu, Q., Günter, S., Lackner, K.
openaire   +2 more sources

Plasma response to externally applied resonant magnetic perturbations [PDF]

Nuclear Fusion, 2011
Based on recent finding that applied resonant magnetic perturbation (RMP) can either increase or decrease the local electron density gradient around the resonant surface (Yu and Günter 2009 Nucl. Fusion 49 062001), the plasma response to the RMP of a single helicity is studied numerically by further taking into account the ...
Yu, Q., Günter, S.
openaire   +4 more sources

Resonant mode effects on rotation braking induced by n = 1 resonant magnetic perturbations in the EAST tokamak

Nuclear Fusion, 2023
The spectrum effects on toroidal rotation braking, induced by n  = 1 resonant magnetic perturbations (RMPs) in the discharges with $q_{95} = 4.1$ and $q_{95} = 5.1$ , are studied in the EAST tokamak.
H. Sheng, Y.W. Sun, X.Y. Li, H.H. Li, X.M. Wu, Y.Y. Li, S.F. Mao, Q. Ma, Y.Q. Liu, C. Ye, X.T. Yan, P.C. Xie, Q. Zang, H.H. Wang, M.N. Jia, M.Y. Ye, the EAST Team   +16 more
doaj   +1 more source

Transition in particle transport under resonant magnetic perturbations in a tokamak

Nuclear Fusion, 2023
Nonlinear 3D MHD simulations and validations reveal that the hybrid particle-MHD transport is a key process for driving the pump-out in the presence of Resonant Magnetic Perturbations (RMPs) in the KSTAR tokamak.
S.K. Kim, N.C. Logan, M. Becoulet, M. Hoelzl, Q. Hu, G.T.A. Huijsmans, S.J.P. Pamela, Q. Yu, S.M. Yang, C. Paz-soldan, E. Kolemen, J.-K. Park   +11 more
doaj   +1 more source