Results 51 to 60 of about 14,440 (202)

Design of a Closed Helical Divertor in LHD and the Prospect for Helical Fusion Reactors

, 2017
A new closed helical divertor configuration for efficient particle control and reduction of the heat load on the divertor plates is proposed. The closed divertor configuration practically utilizes an ergodic layer and magnetic field line configuration on
YAMADA, Hiroshi, the LHD Experimental Groups,, LHD Experimental Groups,, LHD Experimental Group,, SAGARA, Akio, KOMORI, Akio, KOBAYASHI, Masahiro, SHOJI, Mamoru, MASUZAKI, Suguru, the LHD Experimental Group,   +9 more
core   +1 more source

Effect of Radiation Power Loss due to Impurity Gas Puff on Divertor Plasma

, 2011
In order to examine the effect of radiation power loss due to impurity gas puff in divertor plasma, we calculated time evolution of impurity ion densities and electron temperature for several cases with Ne gas puff rates 1012 and 1013 cm?3 s?1 during 0 ...
KATO, Daiji, SAKAUE, Hiroyuki A., MURAKAMI, Izumi, MASUZAKI, Suguru   +3 more
core   +1 more source

Effects of divertor geometry on detachment and core plasma performance with impurity seeding in EAST

Nuclear Fusion
Divertor detachment operation compatible with the core plasma is an effective method to alleviate the steady-state heat flux approaching the divertor target; this scheme will be adopted by high-performance tokamaks in the future, such as International ...
L.Y. Meng, L. Wang, J.B. Liu, K.D. Li, X. Lin, X.J. Liu, G.Z. Jia, J. Guo, T. He, L. Yu, P.J. Tang, J.C. Xu, W.M. Zhang, L. Zhang, J.J. Yang, Y.M. Duan, F.B. Zhong, T. Zhang, M.R. Wang, Z.C. Lin, T.Q. Jia, B. Zhang, Q. Zang, Y.W. Yu, Z.X. Chen, G.S. Xu, B.N. Wan   +26 more
doaj   +1 more source

Physics of plasma transport and divertor detachment in novel divertor configurations [PDF]

, 2023
In this dissertation, we investigate two proposed features aimed at improving the performance of the divertor exhaust system in tokamak nuclear fusion devices.
Masline, Rebecca Lee
core  

Facilitated core-edge integration through divertor nitrogen seeding in the HL-2A tokamak

Nuclear Fusion
A divertor detachment with sustainable high-performance plasmas has been achieved through divertor nitrogen seeding in the HL-2A tokamak. The closed divertor structure facilitates achieving high divertor neutral pressure due to its efficient particle ...
N. Wu, J. Cheng, K.Y. Yi, R. Wang, M.K. Han, Z.H. Huang, W.C. Wang, Y. He, L.W. Yan, H.L. Du, J.M. Gao, H.C. Ma, X.X. He, Z.C. Yang, J. Wen, K. Zhang, T. Wu, W.P. Guo, X. Yu, L. Liu, Y.G. Li, L. Nie, Z.B. Shi, D.Z. Wang, W.L. Zhong   +24 more
doaj   +1 more source

Design Study of LHD Helical Divertor and High Temperature Divertor Plasma Operation

, 1992
"The Large Helical device (LHD), now under construction is a Heliotron/torsatron device with a closed divertor system. The LHD divertor magnetic structure has been studied in detail.
Noda, N., Akaishi, K., Watanabe, T., Akao, H., "Ohyabu, N., Ji, H., Kawamura, T., Kubota, Y., Yamazaki, K., Katanuma, I., Kaneko, H., Fujiwara, M., Ono, T., Motojima, O., Watanabe, K., Sagara, A., Iiyoshi, A."   +16 more
core  

Effect of a baffle divertor structure on neutral hydrogen and helium transport in the Large Helical Device

, 2013
Control of the peripheral plasma density is one of urgent tasks for improving the plasma performance in the Large Helical Device. Test modules with a baffle divertor structure have been installed in the inboard side of the torus for controlling the ...
LHD, Experiment Group, Funaba, H., Kobayashi, M., MORISAKI, Tomohiko, SHOJI, Mamoru, MASUZAKI, Suguru, YAMADA, H.   +6 more
core   +1 more source

Numerical Studies on Divertor Plasmas in Helical Systems

, 1990
"Scrape-off layer and divertor plasmas in helical systems are studied by using the two-dimensional (2D) numerical simulation code. Unified Edge Divertor Analysis code (UEDA code) is applied to the straight helical model of torsatron/helical heliotron ...
Itoh, S.-I.", Itoh, K., "Ueda, N.
core  

Helical Divertor in the Large Helical Device

, 1992
"The Large Helical device (LHD), now under construction is a Heliotron/torsatron device with a closed divertor system. The edge LHD magnetic structure has been studied in detail. A peculiar feature of the configuration is existence of edge surface layers,
Hantao, Ji, Noda, N., Akaishi, K., Akao, H., Watanabe, T., Sagara, A.", "Ohyabu, N., Kawamura, T., Kubota, Y., Yamazaki, K., Kaneko, H., Morimoto, S., Ono, T., Motojima, O.   +13 more
core  

The snowflake divertor

Physics of Plasmas, 2015
The snowflake magnetic configuration is characterized by the presence of two closely spaced poloidal field nulls that create a characteristic hexagonal (reminiscent of a snowflake) separatrix structure. The magnetic field properties and the plasma behaviour in the snowflake are determined by the simultaneous action of both nulls, this generating a lot ...
D. D. Ryutov, V. A. Soukhanovskii
openaire   +2 more sources