Fast-ion velocity-space tomography using slowing-down regularization in EAST plasmas with co- and counter-current neutral beam injection

被引：36

作者：

Madsen, B. ^{[1
]}

Huang, J. ^{[2
]}

Salewski, M. ^{[1
]}

Jarleblad, H. ^{[1
]}

Hansen, P. C. ^{[3
]}

Stagner, L. ^{[4
]}

Su, J. ^{[2
]}

Chang, J. F. ^{[2
]}

Fu, J. ^{[2
]}

Wang, J. F. ^{[2
]}

Liang, L. Z. ^{[2
]}

Zhong, G. Q. ^{[2
]}

Li, Y. Y. ^{[2
]}

Lyu, B. ^{[2
]}

Liu, H. Q. ^{[2
]}

Zang, Q. ^{[2
]}

Luo, Z. P. ^{[2
]}

Nocente, M. ^{[5
,6
]}

Moseev, D. ^{[7
]}

Fan, T. S. ^{[8
,9
]}

Zhang, Y. M. ^{[8
,9
]}

Yang, D. ^{[8
,9
]}

Sun, J. Q. ^{[8
,9
]}

Liao, L. Y. ^{[8
,9
]}

机构：

[1] Tech Univ Denmark, Dept Phys, Lyngby, Denmark

[2] Chinese Acad Sci, Inst Plasma Phys, PO 1126, Hefei 230031, Anhui, Peoples R China

[3] Tech Univ Denmark, Dept Appl Math & Comp Sci, Lyngby, Denmark

[4] Gen Atom, San Diego, CA USA

[5] Univ Milano Bicocca, Dipartimento Fis G Occhialini, Milan, Italy

[6] CNR, Inst Plasma Sci & Technol, Milan, Italy

[7] Max Planck Inst Plasma Phys, Greifswald, Germany

[8] Peking Univ, Sch Phys, Beijing, Peoples R China

[9] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2020年 / 62卷 / 11期

基金：

中国国家自然科学基金;

关键词：

velocity-space tomography; fast-ion D-alpha spectroscopy; fast ions; slowing-down regularization; EAST tokamak; ALPHA;

D O I：

10.1088/1361-6587/abb79b

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：

We demonstrate 2D reconstructions of the fast-ion velocity distribution from two-view fast-ion D-alpha (FIDA) measurements at the EAST tokamak. By expressing the distribution in a basis relying on the fast-ion slowing-down process in fusion plasmas, the smoothness and velocity-space resolution of reconstructions are improved. We reconstruct distributions of fast ions born from simultaneous co- and counter-current neutral beam injection and detect the expected distinct change in fast-ion birth pitch when comparing discharges utilizing different neutral beam injectors. For purely co-current injection, we find a good agreement between TRANSP-predicted and reconstructed fast-ion densities, pressures and current densities for energies above 20 keV. We furthermore illustrate the improvement of the reconstructed high-energy range (> 40 keV) of the distribution by combining FIDA with neutron emission spectroscopy measurements with the compact single-plate EJ301 scintillator.

引用

页数：14

共 60 条

[1] Collective Thomson scattering data analysis for Wendelstein 7-X [J].

Abramovic, I. ;

Pavone, A. ;

Svensson, J. ;

Moseev, D. ;

Salewski, M. ;

Laqua, H. P. ;

Cardozo, N. J. Lopes ;

Wolf, R. C. .

JOURNAL OF INSTRUMENTATION, 2017, 12

[2]

Aster R, 2019, PARAMETER ESTIMATION AND INVERSE PROBLEMS, 3RD EDITION, P135, DOI 10.1016/B978-0-12-804651-7.00010-9

[3] A NOTE ON THE CALCULATION OF NBI FAST-ION DISTRIBUTION-FUNCTIONS [J].

CORE, WGF .

NUCLEAR FUSION, 1993, 33 (05) :829-830

[4] Material migration studies with an ITER first wall panel proxy on EAST [J].

Ding, R. ;

Pitts, R. A. ;

Borodin, D. ;

Carpentier, S. ;

Ding, F. ;

Gong, X. Z. ;

Guo, H. Y. ;

Kirschner, A. ;

Kocan, M. ;

Li, J. G. ;

Luo, G. -N. ;

Mao, H. M. ;

Qian, J. P. ;

Stangeby, P. C. ;

Wampler, W. R. ;

Wang, H. Q. ;

Wang, W. Z. .

NUCLEAR FUSION, 2015, 55 (02)

[5] Measuring fast ions in fusion plasmas with neutron diagnostics at JET [J].

Eriksson, J. ;

Hellesen, C. ;

Binda, F. ;

Cecconello, M. ;

Conroy, S. ;

Ericsson, G. ;

Giacomelli, L. ;

Gorini, G. ;

Hjalmarsson, A. ;

Kiptily, V. G. ;

Mantsinen, M. ;

Nocente, M. ;

Sahlberg, A. ;

Salewski, M. ;

Sharapov, S. ;

Tardocchi, M. ;

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. ;

Arnichand, H. ;

Arshad, S. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2019, 61 (01)

[6] Chapter 5: Physics of energetic ions [J].

Fasoli, A. ;

Gormenzano, C. ;

Berk, H. L. ;

Breizman, B. ;

Briguglio, S. ;

Darrow, D. S. ;

Gorelenkov, N. ;

Heidbrink, W. W. ;

Jaun, A. ;

Konovalov, S. V. ;

Nazikian, R. ;

Noterdaeme, J.-M. ;

Sharapov, S. ;

Shinohara, K. ;

Testa, D. ;

Tobita, K. ;

Todo, Y. ;

Vlad, G. ;

Zonca, F. .

NUCLEAR FUSION, 2007, 47 (06) :S264-S284

[7] 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)

[8] Velocity-space sensitivity of time-of-flight neutron spectrometer at EAST in deuterium plasma [J].

Ge, L. J. ;

Hu, Z. M. ;

Zhang, Y. M. ;

Sun, J. Q. ;

Yuan, X. ;

Peng, X. Y. ;

Chen, Z. J. ;

Du, T. F. ;

Nocente, M. ;

Gorini, G. ;

Tardocchi, M. ;

Hu, L. Q. ;

Zhong, G. Q. ;

Wan, B. N. ;

Li, X. Q. ;

Fan, T. S. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2018, 89 (10)

[9] Neutron emission spectroscopy measurements with a compact liquid scintillation detector for NBI-heated plasma at EAST [J].

Ge, L. J. ;

Hu, Z. M. ;

Zhang, Y. M. ;

Sun, J. Q. ;

Yuan, X. ;

Peng, X. Y. ;

Chen, Z. J. ;

Du, T. F. ;

Gorini, G. ;

Nocente, M. ;

Tardocchi, M. ;

Hu, L. Q. ;

Zhong, G. Q. ;

Lin, S. Y. ;

Wan, B. N. ;

Li, X. Q. ;

Zhang, G. H. ;

Chen, J. X. ;

Fan, T. S. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2018, 60 (09)

[10] Progress in modelling fast-ion D-alpha spectra and neutral particle analyzer fluxes using FIDASIM [J].

Geiger, B. ;

Stagner, L. ;

Heidbrink, W. W. ;

Dux, R. ;

Fischer, R. ;

Fujiwara, Y. ;

Garcia, A. V. ;

Jacobsen, A. S. ;

Jansen van Vuuren, A. ;

Karpushov, A. N. ;

Liu, D. ;

Schneider, P. A. ;

Sfiligoi, I. ;

Zs. Poloskei, P. ;

Weiland, M. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2020, 62 (10)

← 1 2 3 4 5 6 →