Characterisation of the scrape-off layer in JET-ILW deuterium and helium low-confinement mode plasmas

被引：0

作者：

Rees, D. ^{[1
]}

Groth, M. ^{[1
]}

Aleiferis, S. ^{[2
]}

Brezinsek, S. ^{[3
]}

Brix, M. ^{[2
]}

Jepu, I. ^{[2
]}

Lawson, K. D. ^{[2
]}

Meigs, A. G. ^{[2
]}

Menmuir, S. ^{[2
]}

Kirov, K. ^{[2
]}

Lomas, P. ^{[2
]}

Lowry, C. ^{[2
]}

Thomas, B. ^{[2
]}

Widdowson, A. ^{[2
]}

Carvalho, P. ^{[2
]}

Delabie, E. ^{[4
]}

机构：

[1] Aalto Univ, Dept Appl Phys, Espoo, Finland

[2] UKAEA, Culham Sci Ctr, Abingdon, England

[3] Forschungszentrum Julich GmbH, Inst Energy & Climate Res Plasma Phys, Julich, Germany

[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

NUCLEAR MATERIALS AND ENERGY | 2024年 / 39卷

关键词：

Helium plasma; Detachment; JET; Tokamak; Divertor; SOL; DIVERTOR; DETACHMENT; PARTICLE;

D O I：

10.1016/j.nme.2024.101657

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Langmuir probe measurements in neutral beam injection (NBI) heated, low-confinement mode plasmas in JET ITER-like wall showed that the current to the divertor targets, I div , in helium (He) plasmas was up to 70 % lower on the low-field side (LFS) than in otherwise identical deuterium (D) plasmas. The edge plasma density at which the rollover of Idivoccurred div occurred i.e. the onset of detachment, was 10 % higher in He plasmas on both the LFS and high-field side (HFS). The density of I div rollover increases by 25 % for He when the NBI power increases 1 MW to 5 MW. The total radiated power was similar in He and D plasmas for densities below the I div rollover. At densities above the I div rollover density, the total radiated power and power from within the separatrix are higher in He, reducing the power across the separatrix and subsequently I div,LFS . In He plasmas, the peak radiated power was observed within the confined region above the X-point in tomographic reconstructions from bolometry.

引用

页数：9

共 41 条

[21] Investigation into the formation of the scrape-off layer density shoulder in JET ITER-like wall L-mode and H-mode plasmas
Wynn, A.
Lipschultz, B.
Cziegler, I.
Harrison, J.
Jaervinen, A.
Matthews, G. F.
Schmitz, J.
Tal, B.
Brix, M.
Guillemaut, C.
Frigione, D.
Huber, A.
Joffrin, E.
Kruzei, U.
Militello, F.
Nielsen, A.
Walkden, N. R.
Wiesen, S.
Abduallev, S.
Abhangi, M.
Abreu, P.
Afzal, M.
Aggarwal, K. M.
Ahlgren, T.
Ahn, J. H.
Aho-Mantila, L.
Aiba, N.
Airila, M.
Albanese, R.
Aldred, V.
Alegre, D.
Alessi, E.
Aleynikov, P.
Alfier, A.
Alkseev, A.
Allinson, M.
Alper, B.
Alves, E.
Ambrosino, G.
Ambrosino, R.
Amicucci, L.
Amosov, V.
Sunden, E. Andersson
Angelone, M.
Anghel, M.
Angioni, C.
Appel, L.
Appelbee, C.
Arena, P.
Ariola, M.
NUCLEAR FUSION, 2018, 58 (05)
[22] A monte Carlo model for velocity space effects in low recycling scrape-off layer plasmas
Wang, WX
Okamoto, M
Nakajima, N
Murakami, S
Ohyabu, N
NUCLEAR FUSION, 1996, 36 (12) : 1633 - 1646
[23] Low-frequency linear-mode regimes in the tokamak scrape-off layer
Mosetto, Annamaria
Halpern, Federico D.
Jolliet, Sebastien
Ricci, Paolo
PHYSICS OF PLASMAS, 2012, 19 (11)
[24] Particle fluxes and gross erosion at limiters in JET low-confinement mode plasmas measured with visible cameras
de la Cal, E.
Solano, E. R.
Balboa, I.
Silburn, S.
Pawelec, E.
Romazanov, J.
Carvalho, P.
Karhunen, J.
Tookey, A.
Bakes, S.
Chapman, R.
Foster, J.
Gonzalez, A.
Maddock, J.
Matthews, J.
Pinto, E.
Voldiner, I.
Xiang, L.
Zayachuk, Y.
JET Contributors
NUCLEAR FUSION, 2025, 65 (04)
[25] Localized Scrape-Off Layer density modifications by Ion Cyclotron near fields in JET and ASDEX-Upgrade L-mode plasmas
Colas, L.
Jacquet, Ph.
Van Eester, D.
Bobkov, V.
Brix, M.
Meneses, L.
Tamain, P.
Marsen, S.
Silva, C.
Carralero, D.
Kocan, M.
Mueller, H. -W.
Crombe, K.
Krivska, A.
Goniche, M.
Lerche, E.
Rimini, F. G.
JOURNAL OF NUCLEAR MATERIALS, 2015, 463 : 735 - 738
[26] Experimental investigation of scrape-off layer blob high density transition in L-mode plasmas on EAST
汪平
胡广海
颜宁
徐国盛
孟令义
卢智康
余林
贾曼妮
王一丰
陈良
兰恒
刘祥
吴茗甫
王亮
Plasma Science and Technology, 2022, (07) : 146 - 153
[27] Experimental investigation of scrape-off layer blob high density transition in L-mode plasmas on EAST
汪平
胡广海
颜宁
徐国盛
孟令义
卢智康
余林
贾曼妮
王一丰
陈良
兰恒
刘祥
吴茗甫
王亮
Plasma Science and Technology, 2022, 24 (07) : 146 - 153
[28] Turbulence during H- and L-mode plasmas in the scrape-off layer of the ASDEX Upgrade tokamak
Antar, G. Y.
Tsalas, M.
Wolfrum, E.
Rohde, V.
PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (09)
[29] Experimental investigation of scrape-off layer blob high density transition in L-mode plasmas on EAST
Wang, Ping
Hu, Guanghai
Yan, Ning
Xu, Guosheng
Meng, Lingyi
Lu, Zhikang
Yu, Lin
Jia, Manni
Wang, Yifeng
Chen, Liang
Lan, Heng
Liu, Xiang
Wu, Mingfu
Wang, Liang
PLASMA SCIENCE & TECHNOLOGY, 2022, 24 (07)
[30] Flow and shear behavior in the edge and scrape-off layer of L-mode plasmas in National Spherical Torus Experiment
Sechrest, Y.
Munsat, T.
D'Ippolito, D. A.
Maqueda, R. J.
Myra, J. R.
Russell, D.
Zweben, S. J.
PHYSICS OF PLASMAS, 2011, 18 (01)

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