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

Mirko Salewski; Fernando Meo; Morten Stejner Pedersen; O. Asunta; Henrik Bindslev; Vedran Furtula; Søren Bang Korsholm; T. Kurki-Suonio; Frank Leipold; F. Leuterer; Poul Michelsen; Dmitry Moseev; Stefan Kragh Nielsen; J. Stober; G. Tardini; D. Wagner; P. Woskov

doi:10.1088/0029-5515/50/3/035012

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

Mirko Salewski
, Fernando Meo
, Morten Stejner Pedersen
, O. Asunta
, Henrik Bindslev
, Vedran Furtula
, Søren Bang Korsholm
, T. Kurki-Suonio
, Frank Leipold
, F. Leuterer
, Poul Michelsen
, Dmitry Moseev
, Stefan Kragh Nielsen
, J. Stober
, G. Tardini
, D. Wagner
, P. Woskov

Aalto University
Max Planck Institute
Massachusetts Institute of Technology

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

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.

Original language	English
Journal	Nuclear Fusion
Volume	50
Issue number	3
Pages (from-to)	035012
ISSN	0029-5515
DOIs	https://doi.org/10.1088/0029-5515/50/3/035012
Publication status	Published - 2010

Keywords

Fusion energy

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Salewski, M., Meo, F., Stejner Pedersen, M., Asunta, O., Bindslev, H., Furtula, V., Korsholm, S. B., Kurki-Suonio, T., Leipold, F., Leuterer, F., Michelsen, P., Moseev, D., Nielsen, S. K., Stober, J., Tardini, G., Wagner, D., & Woskov, P. (2010). Comparison of fast ion collective Thomson scattering measurements at ASDEX Upgrade with numerical simulations. Nuclear Fusion, 50(3), 035012. https://doi.org/10.1088/0029-5515/50/3/035012

@article{8eedbcf794d4442eaae20deb92d244a9,

title = "Comparison of fast ion collective Thomson scattering measurements at ASDEX Upgrade with numerical simulations",

abstract = "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.",

keywords = "Fusion energy, Fusionsenergiforskning, Fusionsenergi",

author = "Mirko Salewski and Fernando Meo and \{Stejner Pedersen\}, Morten and O. Asunta and Henrik Bindslev and Vedran Furtula and Korsholm, \{S{\o}ren Bang\} and T. Kurki-Suonio and Frank Leipold and F. Leuterer and Poul Michelsen and Dmitry Moseev and Nielsen, \{Stefan Kragh\} and J. Stober and G. Tardini and D. Wagner and P. Woskov",

year = "2010",

doi = "10.1088/0029-5515/50/3/035012",

language = "English",

volume = "50",

pages = "035012",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing",

number = "3",

}

Salewski, M, Meo, F, Stejner Pedersen, M, Asunta, O, Bindslev, H, Furtula, V, Korsholm, SB, Kurki-Suonio, T, Leipold, F, Leuterer, F, Michelsen, P, Moseev, D, Nielsen, SK, Stober, J, Tardini, G, Wagner, D & Woskov, P 2010, 'Comparison of fast ion collective Thomson scattering measurements at ASDEX Upgrade with numerical simulations', Nuclear Fusion, vol. 50, no. 3, pp. 035012. https://doi.org/10.1088/0029-5515/50/3/035012

TY - JOUR

T1 - Comparison of fast ion collective Thomson scattering measurements at ASDEX Upgrade with numerical simulations

AU - Salewski, Mirko

AU - Meo, Fernando

AU - Stejner Pedersen, Morten

AU - Asunta, O.

AU - Bindslev, Henrik

AU - Furtula, Vedran

AU - Korsholm, Søren Bang

AU - Kurki-Suonio, T.

AU - Leipold, Frank

AU - Leuterer, F.

AU - Michelsen, Poul

AU - Moseev, Dmitry

AU - Nielsen, Stefan Kragh

AU - Stober, J.

AU - Tardini, G.

AU - Wagner, D.

AU - Woskov, P.

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - Fusion energy

KW - Fusionsenergiforskning

KW - Fusionsenergi

U2 - 10.1088/0029-5515/50/3/035012

DO - 10.1088/0029-5515/50/3/035012

M3 - Journal article

SN - 0029-5515

VL - 50

SP - 035012

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 3

ER -

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

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Keywords

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