Results 61 to 70 of about 1,577 (223)

Numerical Simulation of Internal Reconnection Event in Spherical Tokamak

, 1999
"Three dimensional magnetohydrodynamic simulations are executed in a full toroidal geomety to clarify the physical mechanisms of the Internal Reconnection Event (IRE), which is observed in the spherical tokamak experiments.
Mizuguchi, N., Sato, T., "Hayashi, T., The, Complexity Simulation Group"   +3 more
core  

Computation of Three Dimensional Tokamak and Spherical Torus Equilibria [PDF]

, 2007
A nominally axisymmetric plasma con guration, such as a tokamak or a spherical torus, is highly sensitive to non-axisymmetric magnetic perturbations due to currents outside of the plasma.
Jong-kyu Park, Allen H. Boozer, and Alan H. Glasser
core  

Optimizing Radiation Shielding for Fusion Maintenance Facilities: Insights From a Comprehensive Analysis of ITER Hot Cell

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
One of the primary goals of the ITER project is to demonstrate the safety characteristics of a fusion device, particularly in terms of radiation management. Radiation protection during maintenance periods is of special concern, as personnel performing maintenance‐like activities will be exposed to delayed gamma fields from numerous and complex ...
Pablo Martínez-Albertos, Patrick Sauvan, Juan Pablo Catalán, Mario Belotti, François Javier, Joffrey Germa, Yannick Le Tonqueze, Alexis Dammann, Rafael Juárez, Geng Chen   +9 more
wiley   +1 more source

Profile control for an Alternative Spherical Tokamak

, 1996
Magnetically driven plasma guns that are inserted around a flux conserver at definite angular intervals are considered. The creation and the control of plasma channels are examined.
Sinman, A, Sinman, S
core   +1 more source

Localised Microwave Bursts During ELMs on MAST

EPJ Web of Conferences, 2015
Bursts of microwave emission are observed during ELM events on the Mega Ampère Spherical Tokamak. In agreement with observations on other machines, these bursts are up to 3 orders of magnitude more intense than the thermal background, but are electron ...
Freethy Simon, Shevchenko Vladimir, Huang Billy, Vann Roddy   +3 more
doaj   +1 more source

Spectroscopic Measurement of Hydrogen Atom Density in a Plasma Produced with 28 GHz ECH in QUEST

Atoms, 2020
The spatial distribution of the hydrogen atom density was evaluated in a spherical tokamak (ST) plasma sustained only with 28 GHz electron cyclotron heating (ECH). The radially resolved Hδ emissivity was measured using multiple viewing chord spectroscopy
Satoru Mori, Taiichi Shikama, Kazuaki Hanada, Nao Yoneda, Arseniy Kuzmin, Masahiro Hasuo, Hiroshi Idei, Takumi Onchi, Akira Ejiri, Yuki Osawa, Yi Peng, Kyohei Matsuzaki, Shinichiro Kado, Keiji Sawada, Takeshi Ido, Kazuo Nakamura, Ryuya Ikezoe, Yoshihiko Nagashima, Makoto Hasegawa, Kengo Kuroda, Aki Higashijima, Takahiro Nagata, Shun Shimabukuro   +22 more
doaj   +1 more source

Runaway dynamics in reactor-scale spherical tokamak disruptions

Understanding generation and mitigation of runaway electrons in disruptions is important for the safe operation of future tokamaks. In this paper we investigate the runaway dynamics in reactor-scale spherical tokamaks, focusing on a compact nominal ...
Vallhagen, Oskar, Berger, Esmee, Hoppe, Mathias, Fulop, Tunde, Fil, Alexandre, Pusztai, Istvan, Newton, Sarah L.   +6 more
core   +1 more source

Transient process of a spherical tokamak plasma startup by electron cyclotron waves

, 2011
Non-inductive startup by a 2.45 GHz microwave through electron cyclotron resonance heating (ECRH) has been studied in the SUNIST spherical tokamak (R/a: 0.3 m/0.23 m; B T0: < 0.15 T).
Y. Tan, Z. Gao, L. Wang, W.H. Wang, C.H. Feng, L.F Xie, X.Z. Yang   +6 more
core   +1 more source

Regularity for Micropolar Fluid Equations Subjected to Hall Current

Journal of Applied Mathematics, Volume 2025, Issue 1, 2025.
In this paper, we consider the density‐dependent incompressible Hall‐magnetomicropolar fluid equations and establish a regularity condition involving the Lt1Lx∞ norm of the velocity gradient and the microrotational velocity gradient and the Lt2r/r−3Lxr norm of the magnetic field gradient for r > 3.
Mingyu Zhang, Arpan Hazra
wiley   +1 more source

Multi-machine validation of plasma initiation modelling and prospects for future devices: Predicting plasma initiation using only hardware design and control room input data

Nuclear Fusion
This paper reports on the generic prediction capability of full electromagnetic plasma initiation modelling with DYON, which was carried out for the first time in fusion research by the joint modelling of the International Tokamak Physics Activity ...
Hyun-Tae Kim, Eugenio Schuster, Fabien Jaulmes, Geoffrey Cunningham, Gloria Falchetto, Hong-Sik Yun, James Yang, Jeongwon Lee, Joelle Mailloux, Oliver Bardsley, Peter de Vries, Runze Chen, Takuma Wakatsuki, Xavier Litaudon, Yeongsun Lee, Yong-Su Na, ITPA-Integrated Operation Scenario group   +16 more
doaj   +1 more source