Beam-ion losses velocity-space distribution under neutral-beam injection on EAST

被引：1

作者：

Wang, S. S. ^{[1
,3
]}

Zhang, Z. X. ^{[1
,2
]}

Huang, J. ^{[1
]}

Chang, J. F. ^{[1
]}

Galdon-Quiroga, J. ^{[4
]}

Sanchis, L. ^{[4
]}

Gao, W. ^{[1
]}

Fu, J. ^{[1
,2
]}

Sun, Y. X. ^{[1
,2
]}

Wang, X. H. ^{[1
,2
]}

Shi, C. ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Peoples R China

[3] Qingdao Sifang SRI Intellectual Technol Co Ltd, Qingdao 266031, Peoples R China

[4] Univ Seville, Dept Atom Mol & Nucl Phys, Seville 41012, Spain

来源：

NUCLEAR FUSION | 2025年 / 65卷 / 01期

基金：

国家重点研发计划;

关键词：

beam-ion losses; velocity-space distribution; ASCOT; FILDSIM; DENSITY;

D O I：

10.1088/1741-4326/ad933f

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The velocity-space distribution of the fast-ion loss in EAST neutral-beam injection (NBI)heating discharge is obtained both from Scintillator-based fast-ion loss detector (FILD) signalsand by ASCOT5 and FILDSIM simulations. The results of simulations are in good agreementwith the distribution of beam-ion losses measured with FILD of EAST and the correctness ofthe fast-ion loss distribution has been demonstrated. Simulations indicate that the beam-ionlosses observed by the FILD probe are attributed to the fast ions from both the high-field side(HFS) and the low-field side (LFS). However, the beam-ion losses from the HFS (associatedwith NBI1L) have not been observed experimentally due to the limited detecting range of theFILD probe. Therefore, an upgrade and modification of the FILD probe was carried out in 2022to enable the detection of fast-ion loss with smaller pitch angles. Comparative analysis isconducted in neutral-beam injection (NBI2R) discharges after the upgrade, which indicates thatthe velocity-space distribution of beam-ion losses from the HFS has strong agreement betweenexperimental measurements and simulation results. However, the experimental and simulatedresults of the velocity-space distribution of beam-ion losses from the LFS showsinconsistencies, primarily because the BBNBI module in the simulation does not consider thecontributions of boundary neutral particles to neutral-beam deposition (ionization reactions).These conclusions not only provide valuable references for improving the neutral-beamdeposition model but also establish a fundamental basis for further exploring the mechanisms offast-ion loss under various conditions on the EAST tokamak.

引用

页数：15

共 40 条

[1] Validating the ASCOT modelling of NBI fast ions in Wendelstein 7-X stellarator [J].

Aekaeslompolo, S. ;

Drewelow, P. ;

Gao, Y. ;

Ali, A. ;

Biedermann, C. ;

Bozhenkov, S. ;

Dhard, C. P. ;

Endler, M. ;

Fellinger, J. ;

Ford, O. P. ;

Geiger, B. ;

Geiger, J. ;

den Harderd, N. ;

Hartmann, D. ;

Hathiramani, D. ;

Isobe, M. ;

Jakubowski, M. ;

Kazakov, Y. ;

Killer, C. ;

Lazerson, S. ;

Mayerd, M. ;

McNeely, P. ;

Naujoks, D. ;

Neelis, T. W. C. ;

Kontula, J. ;

Kurki-Suonio, T. ;

Niemann, H. ;

Ogawa, K. ;

Pisano, F. ;

Poloskei, P. Zs ;

Sitjes, A. Puig ;

Rahbarnia, K. ;

Rust, N. ;

Schmitt, J. C. ;

Sleczka, M. ;

Vano, L. ;

van Vuuren, A. ;

Wurden, G. ;

Wolf, R. C. .

JOURNAL OF INSTRUMENTATION, 2019, 14

[2] Modelling neutral beams in fusion devices: Beam let-based model for fast particle simulations [J].

Asunta, O. ;

Govenius, J. ;

Budny, R. ;

Gorelenkova, M. ;

Tardini, G. ;

Kurki-Suonio, T. ;

Salmi, A. ;

Sipilae, S. .

COMPUTER PHYSICS COMMUNICATIONS, 2015, 188 :33-46

[3] Scintillator probe for lost alpha measurements in JET [J].

Baeumel, S ;

Werner, A ;

Semler, R ;

Mukherjee, S ;

Darrow, DS ;

Ellis, R ;

Cecil, FE ;

Pedrick, L ;

Altmann, H ;

Kiptily, V ;

Gafert, J .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (10) :3563-3565

[4] Scintillator-based fast ion loss measurements in the EAST [J].

Chang, J. F. ;

Isobe, M. ;

Ogawa, K. ;

Huang, J. ;

Wu, C. R. ;

Xu, Z. ;

Jin, Z. ;

Lin, S. Y. ;

Hu, L. Q. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2016, 87 (11)

[5] Predictive modelling for EAST divertor operation [J].

Chen, YiPing .

PHYSICS OF PLASMAS, 2011, 18 (06)

[6] Scintillator based energetic ion loss diagnostic for the National Spherical Torus Experiment [J].

Darrow, D. S. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2008, 79 (02)

[7] Scintillator-based diagnostic for fast ion loss measurements on DIII-D [J].

Fisher, R. K. ;

Pace, D. C. ;

Garcia-Munoz, M. ;

Heidbrink, W. W. ;

Muscatello, C. M. ;

Van Zeeland, M. A. ;

Zhu, Y. B. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2010, 81 (10)

[8] Characterization of beam ion loss in high poloidal beta regime on EAST [J].

Fu, J. ;

Huang, J. ;

Wang, J. F. ;

Yu, L. M. ;

Van Zeeland, M. A. ;

Chang, J. F. ;

Hao, B. L. ;

Chen, J. L. ;

Wu, M. Q. ;

Hu, W. H. ;

Xu, Z. ;

Gao, W. ;

Su, J. X. ;

Sun, Y. X. ;

Liang, R. R. ;

Zang, Q. ;

Liu, H. Q. ;

Lyu, B. ;

Zhong, G. Q. ;

Zhang, B. ;

Gong, X. Z. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2022, 64 (09)

[9] Velocity-space sensitivity and tomography of scintillator-based fast-ion loss detectors [J].

Galdon-Quiroga, J. ;

Garcia-Munoz, M. ;

Salewski, M. ;

Jacobsen, A. S. ;

Sanchis-Sanchez, L. ;

Rodriguez-Ramos, M. ;

Ayllon-Guerola, J. ;

Garcia-Lopez, J. ;

Gonzalez-Martin, J. ;

Jimenez-Ramos, M. C. ;

Rivero-Rodriguez, J. F. ;

Viezzer, E. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2018, 60 (10)

[10] Velocity space resolved absolute measurement of fast ion losses induced by a tearing mode in the ASDEX Upgrade tokamak [J].

Galdon-Quiroga, J. ;

Garcia-Munoz, M. ;

Sanchis-Sanchez, L. ;

Mantsinen, M. ;

Fietz, S. ;

Igochine, V. ;

Maraschek, M. ;

Rodriguez-Ramos, M. ;

Sieglin, B. ;

Snicker, A. ;

Tardini, G. ;

Vezinet, D. ;

Weiland, M. ;

Eriksson, L. G. .

NUCLEAR FUSION, 2018, 58 (03)

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