Results 1 to 10 of about 2,332 (166)

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

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

Observation of Hysteretic Magnetic Island Response to Resonant Magnetic Perturbation in LHD

Plasma and Fusion Research, 2014
The hysteretic magnetic island response to an externally applied resonant magnetic perturbation (RMP) field is observed in the LHD. Thresholds of the amplitude of the RMP for the growth/healing transition of the magnetic island differ. In the case that the RMP is ramped up, that field is initially shielded and the magnetic island is healed. After that,
Yasuhiro Suzuki, Yoshiro Narushima, Kiyomasa Y. WATANABE   +2 more
exaly   +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

Direct effects of the resonant magnetic perturbation on turbulent transport [PDF]

Nuclear Fusion, 2016
Abstract The effects of the resonant magnetic perturbations (RMPs) on the turbulent transport are analyzed in the framework of the test particle approach using a semi-analytical method. The model includes particle collisions. The influence of the RMPs on plasma confinement is determined as function turbulence parameters and of ...
Vlad, Madalina, Spineanu, Florin
openaire   +2 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

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

Suppression of Runaway Electrons by Resonant Magnetic Perturbations in TEXTOR Disruptions [PDF]

Physical Review Letters, 2008
The generation of runaway electrons in the international fusion experiment ITER disruptions can lead to severe damage at plasma facing components. Massive gas injection might inhibit the generation process, but the amount of gas needed can affect, e.g., vacuum systems.
Lehnen, M., Bozhenkov, S. A., Abdullaev, S. S., TEXTOR Team, Jakubowski, M. W.   +4 more
openaire   +5 more sources