Results 1 to 10 of about 709 (165)

Learning plasma dynamics and robust rampdown trajectories with predict-first experiments at TCV [PDF]

Nature Communications
The rampdown phase of a tokamak pulse is difficult to simulate and often exacerbates multiple plasma instabilities. To reduce the risk of disrupting operations, we leverage advances in Scientific Machine Learning (SciML) to combine physics with data ...
Allen M. Wang, Alessandro Pau, Cristina Rea, Oswin So, Charles Dawson, Olivier Sauter, Mark D. Boyer, Anna Vu, Cristian Galperti, Chuchu Fan, Antoine Merle, Yoeri Poels, Cristina Venturini, Federico Felici, Stefano Marchioni, TCV Team   +15 more
doaj   +2 more sources

Numerical Solutions to the Grad–Shafranov Equation for Studying Plasma Equilibrium of Alvand Tokamak [PDF]

فیزیک کاربردی ایران, 2023
Alvand tokamak is a small-sized research tokamak for magnetically confined plasma studies. The plasma cross-section of this tokamak is circular, and its simpler structure compared to tokamaks with an elongated cross-section allows for more fundamental ...
Chapar Rasouli, Banafsheh Pourshahab
doaj   +1 more source

Simple Parametric Model for Calculation of Lateral Electromagnetic Loads in Tokamaks at Asymmetric Vertical Displacement Events (AVDE)

Plasma, 2022
This paper describes a family of relatively simple numerical models for calculation of asymmetric electromagnetic (EM) loads at all tokamak structures and coils at asymmetric vertical plasma displacement events (AVDE). Unlike currently known AVDE studies
Sergey Sadakov, Fabio Villone, Guglielmo Rubinacci, Salvatore Ventre   +3 more
doaj   +1 more source

Database study of turbulent electron temperature fluctuation measurements at ASDEX Upgrade [PDF]

EPJ Web of Conferences, 2023
In this work, an automated method for the analysis of data from the correlation electron cyclotron emission (CECE) diagnostic is applied to discharges in the ASDEX Upgrade (AUG) tokamak.
Yoo Christian, Bielajew Rachel, Conway Garrard D., Molina Cabrera Pedro A., Rodriguez-Fernandez Pablo, Vanovac Branka, White Anne E.   +6 more
doaj   +1 more source

Unveiling the structure and dynamics of peeling mode in quiescent high-confinement tokamak plasmas

Communications Physics, 2021
Unveiling the properties of edge harmonic oscillation is one of the major pursuits to understand complex systems in plasma physics. The authors present measurements at the JT-60U tokamak that show direct observations of peeling modes in quiescent high ...
Kensaku Kamiya, Kimitaka Itoh, Nobuyuki Aiba, Naoyuki Oyama, Mitsuru Honda, Akihiko Isayama   +5 more
doaj   +1 more source

Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40

Nuclear Fusion, 2023
Ion temperatures of over 100 million degrees Kelvin (8.6 keV) have been produced in the ST40 compact high-field spherical tokamak (ST). Ion temperatures in excess of 5 keV have not previously been reached in any ST and have only been obtained in much ...
S.A.M. McNamara, O. Asunta, J. Bland, P.F. Buxton, C. Colgan, A. Dnestrovskii, M. Gemmell, M. Gryaznevich, D. Hoffman, F. Janky, J.B. Lister, H.F. Lowe, R.S. Mirfayzi, G. Naylor, V. Nemytov, J. Njau, T. Pyragius, A. Rengle, M. Romanelli, C. Romero, M. Sertoli, V. Shevchenko, J. Sinha, A. Sladkomedova, S. Sridhar, Y. Takase, P. Thomas, J. Varje, B. Vincent, H.V. Willett, J. Wood, D. Zakhar, D.J. Battaglia, S.M. Kaye, L.F. Delgado-Aparicio, R. Maingi, D. Mueller, M. Podesta, E. Delabie, B. Lomanowski, O. Marchuk, the ST40 Team   +41 more
doaj   +1 more source

In-situ Low Power Tests of the ASDEX Upgrade ECRH Transmission Lines [PDF]

EPJ Web of Conferences
An Electron Cyclotron Resonance Heating (ECRH) system employing 8 gyrotrons is in routine operation at the ASDEX Upgrade tokamak at IPP Garching. The gyrotrons are of two-frequency type operating at 105 and 140 GHz with a maximum output power of up to 1 ...
Wagner Dietmar, Leuterer Fritz, Monaco Francesco, Schütz Harald, Stober Jörg, Thumm Manfred   +5 more
doaj   +1 more source

Perturbative analysis of low-frequency instabilities in high-field ST40 experiments

Nuclear Fusion, 2023
Linear and nonlinear perturbative analyses of low-frequency instabilities are presented for ST40 spherical torus high field plasmas, with simultaneous neutral beam heating due to two tangential sources at 25 keV and 55 keV.
V.N. Duarte, N.N. Gorelenkov, S.M. Kaye, P.J. Bonofiglo, M. Podestà, J. Bland, P. Buxton, M. Gryaznevich, M. Romanelli, M. Sertoli   +9 more
doaj   +1 more source

Superconducting Magnet Technology and Magnetically Confined Fusion

南方能源建设, 2022
[Introduction] Magnetically confined fusion is an effective way to solve the energy problem. To direct to quasi-steady state discharges and their relevant physics, the superconducting magnet (especially the high field HTS magnet) had become the first ...
Teng WANG
doaj   +1 more source

All superconducting tokamak: EAST

AAPPS Bulletin, 2023
Experimental Advanced Superconducting Tokamak (EAST) was built to demonstrate high-power, long-pulse operations under fusion-relevant conditions, with major radius R = 1.9 m, minor radius a = 0.5 m, and design pulse length up to 1000s.
Jiansheng Hu, Weibin Xi, Jian Zhang, Liansheng Huang, Damao Yao, Qing Zang, Yanlan Hu, Guizhong Zuo, Qiping Yuan, Jinping Qian, Zhiwei Zhou, Xinjun Zhang, Mao Wang, Handong Xu, Yahong Xie, Zhengchu Wang, Haiqing Liu, Youwen Sun, Liang Wang, Guoqiang Li, Hongxing Yin, Yao Yang, Xianzu Gong, Kun Lu, Guosheng Xu, Junling Chen, Fukun Liu, Jiangang Li, Yuntao Song, the EAST team   +29 more
doaj   +1 more source