Results 1 to 10 of about 994 (182)

Image-Based Methods to Investigate Synchronization between Time Series Relevant for Plasma Fusion Diagnostics [PDF]

Entropy, 2020
Advanced time series analysis and causality detection techniques have been successfully applied to the assessment of synchronization experiments in tokamaks, such as Edge Localized Modes (ELMs) and sawtooth pacing.
Teddy Craciunescu, Andrea Murari, Ernesto Lerche, Michela Gelfusa, JET Contributors   +4 more
doaj   +2 more sources

On the Use of Transfer Entropy to Investigate the Time Horizon of Causal Influences between Signals [PDF]

Entropy, 2018
Understanding the details of the correlation between time series is an essential step on the route to assessing the causal relation between systems.
Andrea Murari, Michele Lungaroni, Emmanuele Peluso, Pasquale Gaudio, Ernesto Lerche, Luca Garzotti, Michela Gelfusa, JET Contributors   +7 more
doaj   +2 more sources

Aurora and open magnetic flux during isolated substorms, sawteeth, and SMC events [PDF]

Annales Geophysicae, 2007
Using Polar UVI LBHl and IMAGE FUV WIC data, we have compared the auroral signatures and polar cap open flux for isolated substorms, sawteeth oscillations, and steady magnetospheric convection (SMC) events.
A. D. DeJong, X. Cai, R. C. Clauer, J. F. Spann   +3 more
doaj   +3 more sources

Wideband filtering antenna loading U-shaped parasitic patches based on characteristic mode analysis [PDF]

Scientific Reports
A wideband filtering antenna loading with U-shaped parasitic patches (UPP) is proposed by the characteristic mode analysis (CMA). The antenna is consisted of two dielectric substrates, one of which is printed with an eight-sawteeth patch, four single ...
Wen Huang, Pengfei Wang, Jie Hu, Shengwei Hou   +3 more
doaj   +2 more sources

A methodology for discriminating phase and amplitude effects on synchronization in tokamak pacing experiments

Frontiers in Physics, 2022
The control of macroscopic instabilities, such as Edge Localised Modes (ELMs) and sawteeth, is becoming an essential ingredient in the optimisation of scenarios in preparation for the next generation of tokamaks and the demonstrative reactor.
T. Craciunescu, A. Murari, E. Peluso, P.T. Lang, G. Harrer, L. Spolladore, M. Gelfusa, JET Contributors,   the ASDEX Upgrade Team   +8 more
doaj   +1 more source

Experimental evidence of magnetic flux pumping in ASDEX upgrade

Nuclear Fusion, 2023
In high- β scenarios with on-axis co-current electron cyclotron current drive, which normally lowers q _0 below unity, the absence of sawteeth suggests the involvement of an additional current redistribution mechanism beyond neoclassical current ...
A. Burckhart, A. Bock, R. Fischer, T. Pütterich, J. Stober, S. Günter, A. Gude, J. Hobirk, M. Hölzl, V. Igochine, I. Krebs, M. Maraschek, M. Reisner, R. Schramm, H. Zohm, the ASDEX Upgrade Team   +15 more
doaj   +1 more source

MHD stability of negative triangularity DIII-D plasmas

Nuclear Fusion, 2023
Negative triangularity (NT) experiments in DIII-D point to an emergent reactor scenario free of sawteeth, endowed with benign, nondisruptive n = 2 tearing modes, which experience q _min $ \geqslant $ 1 similar to the positive triangularity hybrid ...
W. Boyes, F. Turco, J. Hanson, A. Marinoni, A. Turnbull, M. Austin, G. Navratil   +6 more
doaj   +1 more source

Study of the Aerodynamic Performance of Pantograph Bowhead with Serrated Lower Surface in the Thermal Management Systems of the High-Speed Train Electrical Devices

Energies, 2023
The thermal management problems of traction drive systems for high-speed trains are of great importance for the operation reliability of high-speed trains.
Bo Cai, Zhongkai Wu, Jiyou Fei, Chang Liu, Zhongzhen Guan   +4 more
doaj   +1 more source

Sawtooth pacing with on-axis ICRH modulation in JET-ILW

EPJ Web of Conferences, 2017
A novel technique for sawteeth control in tokamak plasmas using ion-cyclotron resonance heating (ICRH) has been developed in the JET-ILW tokamak [2].
Lerche E., Lennholm M., Carvalho I. S., Dumortier P., Durodie F., Van Eester D., Graves J., Jacquet Ph., Murari A.   +8 more
doaj   +1 more source

Design of Novel Compound Fresnel Lens for High-Performance Photovoltaic Concentrator

International Journal of Photoenergy, 2012
We present a new design of compound Fresnel-R concentrator which is composed of two lenses: a primary lens (Fresnel lens) that works by total internal reflection at outer sawteeth but refraction at inner sawteeth, and a ringed secondary lens that works ...
Lei Jing, Hua Liu, Huifu Zhao, Zhenwu Lu, Hongsheng Wu, He Wang, Jialin Xu   +6 more
doaj   +1 more source