Results 11 to 20 of about 140,360 (284)

Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV [PDF]

Nuclear Fusion, 2022
This paper presents the first result using nitrogen-seeded exhaust feedback control of the NII impurity emission front in TCV. The NII emission front position is consistently located below its commonly used CIII counterpart, indicating the NII emission ...
J.T.W. Koenders, A. Perek, B. Kool, O. Février, T. Ravensbergen, C. Galperti, B.P. Duval, C. Theiler, M. van Berkel, The TCV Team, The EUROfusion MST1 Team   +10 more
doaj   +6 more sources

Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak

Nuclear Fusion
Divertor asymmetry is a major challenge in achieving high-power, long-pulse discharges in future fusion reactors. Impurity seeding is the most common method for achieving divertor detachment in fusion devices.
Qingyi Tan, Haoran Ye, Xueyu Gong, Yijun Zhong, Qianhong Huang, Zhe Wang, Chengzhi Cao, Zhanhui Wang, Cailong Fu, Min Xu, Tao Yang   +10 more
doaj   +2 more sources

COREDIV modelling of JET ILW discharges with different impurity seeding: nitrogen, neon, argon and krypton [PDF]

Nukleonika, 2017
Numerical simulations with the COREDIV code of JET H-mode discharges with 25 MW of auxiliary heating in the ITER-like wall (ILW) configuration with different impurity seedings – nitrogen (N), neon (Ne), argon (Ar) and krypton (Kr) – are presented.
Ivanova-Stanik Irena, Zagórski Roman,
doaj   +2 more sources

Radiative divertor detachment and impurity transport with nitrogen and neon seeding in KSTAR H-mode plasmas

Nuclear Fusion
Achieving core-edge compatible divertor detachment is a critical requirement for stable operation in future fusion devices. This study compares nitrogen and neon seeding in KSTAR H-mode plasmas with carbon walls, combining experiments and SOLPS-ITER ...
Junghoo Hwang, Hyungho Lee, Richard A. Pitts, Andrei Pshenov, Jae-Sun Park, Yoon Seong Han, June-Woo Juhn, Matthias Bernert, Jun-Gyo Bak, Suk-Ho Hong, Wonho Choe   +10 more
doaj   +2 more sources

Corrigendum: Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV (2023 Nucl. Fusion 63 026006) [PDF]

Nuclear Fusion, 2023
In the published paper titled ‘Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV’ (2023 Nucl. Fusion 63 026006), the legend of figure 5 shows the wrong colors: red and blue are switched.
J.T.W. Koenders, A. Perek, B. Kool, O. Février, T. Ravensbergen, C. Galperti, B.P. Duval, C. Theiler, M. van Berkel, the TCV Team, the EUROfusion MST1 Team   +10 more
doaj   +3 more sources

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   +2 more sources

EMC3-EIRENE simulations of edge plasma and impurity transport by toroidally localized argon seeding on CFETR X-divertor

Nuclear Fusion
The three-dimensional (3D) edge Monte Carlo transport code EMC3-EIRENE has been employed to study edge plasma and impurity transport with toroidally localized argon seeding using the Chinese fusion engineering testing reactor (CFETR) X-divertor ...
T. Xie, H. Li, W. Zhang, R. Ding, L. Wang, Y. Luo, D.Z. Wang   +6 more
doaj   +2 more sources

Mechanism of central temperature peaking in impurity seeded plasmas [PDF]

Plasma Physics and Controlled Fusion, 2003
Formation of a centrally peaked profile of the ion temperature by impurity seeding has been observed in all the largest tokamaks: JET, JT-60U, TFTR. A possible explanation of this phenomenon is proposed, which takes into account the suppression of ion temperature gradient instability induced anomalous transport through increasing ion effective charge ...
Tokar, M. Z.
openaire   +4 more sources

Steady-state sustainment of divertor detachment with multi-species impurity seeding in LHD [PDF]

, 2021
0000-0003-1586-1084Multi-species impurity seeding is an advanced operation scenario to mitigate the divertor heat load for the realization of future fusion reactors.
SAKAI, Hikona, TOKUZAWA, Tokihiko, KINOSHITA, Toshiki, BYRON Jay, Peterson, SUZUKI, Chihiro, MUKAI, Kiyofumi, TANAKA, Hirohiko, TANAKA, Kenji, KOBAYASHI, Masahiro, MASUZAKI, Suguru, OISHI, Tetsutaro, Hayashi, Yuki   +11 more
core   +1 more source

Divertor Detachment with Multi-Species Impurity Seeding in LHD [PDF]

Divertor Detachment with Multi-Species Impurity Seeding in LHD
0000-0003-1586-1084 Divertor detachment using higher-Z (Kr) and/or lower-Z (Ne) is investigated. Using Kr+Ne superimposed seeding, plasma radiation could be enhanced at the upstream region in the edge plasma with suppression of impurity accumulation toward the core plasma.
TANAKA, Hirohiko, KOBAYASHI, Masahiro, LHD, Experiment Group, MASUZAKI, Suguru, PETERSON, Byron Jay, HAYASHI, Yuki, MUKAI, Kiyofumi, OISHI, Tetsutarou, SUZUKI, Chihiro, OISHI, Tetsutaro   +9 more
openaire   +2 more sources