Comparison of fast ion collective Thomson scattering measurements at ASDEX Upgrade with numerical simulations

被引：78

作者：

Salewski, M. ^{[1
]}

Meo, F. ^{[1
]}

Stejner, M. ^{[1
]}

Asunta, O. ^{[2
]}

Bindslev, H. ^{[1
]}

Furtula, V. ^{[1
]}

Korsholm, S. B. ^{[1
]}

Kurki-Suonio, T. ^{[2
]}

Leipold, F. ^{[1
]}

Leuterer, F. ^{[3
]}

Michelsen, P. K. ^{[1
]}

Moseev, D. ^{[1
]}

Nielsen, S. K. ^{[1
]}

Stober, J. ^{[3
]}

Tardini, G. ^{[3
]}

Wagner, D. ^{[3
]}

Woskov, P. ^{[4
]}

机构：

[1] Tech Univ Denmark, EURATOM Assoc, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark

[2] Aalto Univ, EURATOM Assoc, TEKES, FI-02015 Helsinki, Finland

[3] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

[4] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

来源：

NUCLEAR FUSION | 2010年 / 50卷 / 03期

关键词：

ENERGETIC PARTICLES; WAVES; DISTRIBUTIONS; FLUCTUATIONS; TRANSPORT; PHYSICS; DESIGN; MODES; ITER;

D O I：

10.1088/0029-5515/50/3/035012

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：

Collective Thomson scattering (CTS) experiments were carried out at ASDEX Upgrade to measure the one-dimensional velocity distribution functions of fast ion populations. These measurements are compared with simulations using the codes TRANSP/NUBEAM and ASCOT for two different neutral beam injection (NBI) configurations: two NBI sources and only one NBI source. The measured CTS spectra as well as the inferred one-dimensional fast ion velocity distribution functions are clearly asymmetric as a consequence of the anisotropy of the beam ion populations and the selected geometry of the experiment. As expected, the one-beam configuration can clearly be distinguished from the two-beam configuration. The fast ion population is smaller and the asymmetry is less pronounced for the one-beam configuration. Salient features of the numerical simulation results agree with the CTS measurements while quantitative discrepancies in absolute values and gradients are found.

引用

页数：10

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