Results 11 to 20 of about 601 (182)

Real-time feedback control of the impurity emission front in tokamak divertor plasmas

Nature Communications, 2021
The exhaust of heat and particles is an important challenge in future nuclear fusion devices. Here the authors report the use of carbon emission as indicator for plasma detachment in a tokamak and its real-time feedback control.
T. Ravensbergen, M. van Berkel, A. Perek, C. Galperti, B. P. Duval, O. Février, R. J. R. van Kampen, F. Felici, J. T. Lammers, C. Theiler, J. Schoukens, B. Linehan, M. Komm, S. Henderson, D. Brida, M. R. de Baar   +15 more
doaj   +1 more source

Implementation of a High-Speed Multichannel Data Acquisition System for Magnetic Diagnostics and Plasma Centroid Position Control in ISTTOK

IEEE Access, 2023
In tokamak and other fusion devices, magnetic control is the main tool that allows to regulate the plasma current, position and shape; it is in charge of actuating the desired plasma current waveform, steering the plasma position to a given set point and
Domenica Corona, Adriano Mele, Nuno Cruz, Hugo Alves, Bernardo B. Carvalho, Humberto Figueiredo, Horacio Fernandes   +6 more
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Surface Problems of Tokamak Devices

Hyomen Kagaku, 1982
Surface problems encountered during plasma confinement experiments in tokamak devices are described in the following context : causes of impurity introduction into the plasma, control of impurity release, fuel recycling, testing of first wall material, and a problem related to additional heating.
Hidewo OHTSUKA, Norio SUZUKI
openaire   +2 more sources

Transport of dust particles in tokamak devices [PDF]

Journal of Nuclear Materials, 2007
Recent advances in the dust transport modeling in tokamak devices are discussed. Topics include: (1) physical model for dust transport; (2) modeling results on dynamics of dust particles in plasma; (3) conditions necessary for particle growth in plasma; (4) dust spreading over the tokamak; (5) density profiles for dust particles and impurity atoms ...
A.Yu. Pigarov, R.D. Smirnov, S.I. Krasheninnikov, T.D. Rognlien, M. Rosenberg, T.K. Soboleva   +5 more
openaire   +1 more source

A Tokamak Ignition/Burn Experimental Research Device [PDF]

Fusion Technology, 1985
As part of a continuing effort by the Office of Fusion Energy to define an ignition experiment, a superconducting tokamak has been designed with thin neutron shielding and aggressive magnet and plasma parameters. By so minimizing the inner radial dimensions of the tokamak center post, coil, and shielding region, the plasma major radius is reduced with ...
Henning, C. D., Logan, B. G., Barr, W. L., Bulmer, R. H., Doggett, J. N., Johnston, B. M., Lee, J. D., Hoard, R. W., Slack, D. S., Miller, J. R.   +9 more
openaire   +1 more source

Research on three-phase four-wire NPC converter for Tokamak low-frequency resonance suppressor

Energy Reports, 2021
During the operation of Tokamak power system, a large number of low frequency harmonic currents with complex spectrum will be generated. Low-frequency resonance suppressor is an effective solution to suppress this low-frequency harmonic currents. The low-
Xianshun Shen, Ge Gao, Yanan Wu, Jun Qu, Zhiwei Mao, Liang Tan, Jing Lu, Mingyan Dai, Jiansheng Wang, Jie Yang   +9 more
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Tokamak, fusion reactor device: Welding and joining for plasma facing components [PDF]

EPJ Web of Conferences
Nuclear fusion might be an unlimited, everywhere available source of energy for electrical production. Among the various machines designed and prototyped to demonstrate electricity production from nuclear fusion the tokamak is certainly the most ...
Crea Francesco
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Plasma Magnetic Control in Tokamak Devices [PDF]

Journal of Fusion Energy, 2018
In tokamak experimental reactors, the magnetic control system is one of the main plasma control systems that is required, together with the density control, since the very beginning, even before first operations. Indeed, the magnetic control drives the current in the external poloidal circuits in order to first achieve the breakdown conditions and ...
openaire   +3 more sources

SIMULATION AND MEASUREMENT OF EXTERNAL ELECTROMAGNETIC ENVIRONMENT OF TOKAMAK DEVICE

Radiation Protection Dosimetry, 2021
Abstract Magnetic confinement nuclear fusion is an important way to realize controllable nuclear fusion. Due to the large current and complicated coil arrangement, there is a complicated electromagnetic environment around the fusion device. In this paper, the B-dot sensor is used to measure the magnetic field, the D-dot sensor is used to
Maoxing, Zhang, Yunsheng, Jiang, Zhiqian, Xu, Shouzhi, Wang, Wenbin, Liu, Cui, Meng, Yi, Tan, Zhe, Gao   +7 more
openaire   +2 more sources

Helicon Wave Auxiliary Current Drive under D-T Plasma Operation Mode on HL-3 Tokamak Device

Yuanzineng kexue jishu
The D-T plasma discharge is a critical operational mode for reactor-grade Tokamak devices. The helicon wave current drive on HL-3 Tokamak device was studied in the paper.
WANG Sen1, ZI Daozheng1, CHENG Zehou1, LI Xinxia1, 2,
doaj   +1 more source