Results 21 to 30 of about 31,111 (232)

Plasma Equilibrium in Tokamaks [PDF]

Fusion Science and Technology, 2006
This lecture treats the magnetohydrodynamic (MHD) equilibrium of axisymmetric plasmas, as given by the Grad-Shafranov equation.
openaire   +5 more sources

Effect of negative triangularity on the bulk ions co-current rotation caused by the ion orbit loss at the edge of the tokamak plasmas

Nuclear Fusion, 2022
The ion orbit loss (IOL) can drive the bulk ions co-current rotation at the edge of the tokamak plasmas. The effect of triangularity on the IOL is investigated by using an analytical tokamak equilibrium model for the shaped plasmas.
Ruoying Wang, Chengkang Pan
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

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

A model of multi-pass absorption of external EC radiation at initial stage of discharge in ITER

EPJ Web of Conferences, 2015
A model is developed for multi-pass absorption of external electron cyclotron radiation (ECR) in tokamaks, which is used at initial stage of discharge to overcome the impurity radiation barrier (burn-through). Model is based on a semi-analytical solution
Minashin P.V., Kukushkin A.B., Khayrutdinov R.R., Lukash V.E.   +3 more
doaj   +1 more source

Initial analytical theory of plasma disruption and experimental evidence

Scientific Reports, 2023
It is a great physical challenge to achieve controlled nuclear fusion in magnetic confinement tokamak and solve energy shortage problem for decades. In tokamak plasma, large-scale plasma instability called disruption will halt power production of reactor
Huibin Qiu, Zuozhi Hu, Shengfa Wu, Jiangcun Chen, Chengjie Zhong, Junjie Wu, Xiaobin Li, Donghua Xiao, Chunhui Shi, Junhui Liu, Wenjun Xiong, Tianyi Hu, Qilong Cai, Youlong Yuan   +13 more
doaj   +1 more source

Transport Simulasion in a Burning Tokamak Plasma

, 1992
A one-dimensional tokamak transport code (TASK/TR) has been developed to analyze the evolution of a burning plasma accompanied with fusion reaction. This code deals with the electrons, deuterons, tritons, thermalized α particles, fast α particles and ...
Kasai, Takashi, Furutani, Yoichiro, Fukuyama, Atsushi   +2 more
core   +1 more source

Experimental observations of bifurcated power decay lengths in the near Scrape-Off Layer of ST40 High Field Spherical Tokamak

Nuclear Materials and Energy
The scrape-off layer parallel heat flux decay lengths measured at ST40, a high field, low aspect ratio spherical tokamak, have been observed to bifurcate into two groups.
X. Zhang, C. Marsden, M. Moscheni, E.N.J. Maartensson, A. Rengle, M. Robinson, T. O’Gorman, H.F. Lowe, E. Vekshina, S. Janhunen, A. Scarabosio, P.F. Buxton, M. Sertoli, M. Romanelli, S.A.M. McNamara, T.K. Gray, N.A. Lopez   +16 more
doaj   +1 more source

Scalings for tokamak energy confinement [PDF]

Nuclear Fusion, 1990
On the basis of an analysis of the ITER L-mode energy confinement database, two new scaling expressions for tokamak L-mode energy confinement are proposed, namely a power law scaling and an offset-linear scaling. The analysis indicates that the present multiplicity of scaling expressions for the energy confinement time TE in tokamaks (Goldston, Kaye ...
Yushmanov, P., Takizuka, T., Riedel, K., Kardaun, O., Cordey, J., Kaye, S., Post, D.   +6 more
openaire   +3 more sources

Spectroscopic diagnostics of superthermal electrons with high-number harmonic EC radiation in tokamak reactor plasmas

EPJ Web of Conferences, 2015
A method of spectroscopic diagnostics of the average perpendicular-to-magnetic-field momentum of the superthermal component of the electron velocity distribution (EVD), based on the high-number-harmonic electron cyclotron (EC) radiation, is suggested for
Minashin P.V., Kukushkin A.B.
doaj   +1 more source