Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfvén eigenmode activity

Birgitte Madsen; Mirko Salewski; W. W. Heidbrink; L. Stagner; M. Podestá; D. Lin; A. V. Garcia; Per Christian Hansen; J. Huang

Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfvén eigenmode activity

Birgitte Madsen^*
, Mirko Salewski
, W. W. Heidbrink
, L. Stagner
, M. Podestá
, D. Lin
, A. V. Garcia
, Per Christian Hansen
, J. Huang

^*Corresponding author for this work

University of California at Irvine
Princeton Plasma Physics Laboratory
Chinese Academy of Sciences

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Fast-ion velocity-space tomography enables reconstruction of the 2D fast-ion velocity distribution from a set of measurements. Here, we reconstruct the fast-ion velocity distribution for plasmas with strong and weak Alfvén eigenmode (AE) activity using the four-view fast-ion D-alpha (FIDA) diagnostics in the DIII-D tokamak. We find that the fast-ion losses due to strong AE activity are selective in velocity-space with a particularly strong density decrease in the population of co-going fast-ions with energies between 40 and 70 keV.

Original language	English
Title of host publication	Proceedings of 46th EPS Conference on Plasma Physics
Editors	C. Riconda, S. Brezinsek, K. McCarty, D. Burgess, P. Brault, D. Farina
Number of pages	4
Volume	43C
Publisher	European Physical Society
Publication date	2019
Article number	P1.1026
ISBN (Electronic)	979-10-96389-11-7
Publication status	Published - 2019
Event	46th EPS Conference on Plasma Physics - Milan, Italy Duration: 8 Jul 2019 → 12 Sept 2019

Conference

Conference	46th EPS Conference on Plasma Physics
Country/Territory	Italy
City	Milan
Period	08/07/2019 → 12/09/2019

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Madsen, B., Salewski, M., Heidbrink, W. W., Stagner, L., Podestá, M., Lin, D., Garcia, A. V., Hansen, P. C., & Huang, J. (2019). Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfvén eigenmode activity. In C. Riconda, S. Brezinsek, K. McCarty, D. Burgess, P. Brault, & D. Farina (Eds.), Proceedings of 46th EPS Conference on Plasma Physics (Vol. 43C). Article P1.1026 European Physical Society. http://ocs.ciemat.es/EPS2019PAP/html/

@inproceedings{04fb756680fe434c943bbd85340737f5,

title = "Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfv{\'e}n eigenmode activity",

abstract = "Fast-ion velocity-space tomography enables reconstruction of the 2D fast-ion velocity distribution from a set of measurements. Here, we reconstruct the fast-ion velocity distribution for plasmas with strong and weak Alfv{\'e}n eigenmode (AE) activity using the four-view fast-ion D-alpha (FIDA) diagnostics in the DIII-D tokamak. We find that the fast-ion losses due to strong AE activity are selective in velocity-space with a particularly strong density decrease in the population of co-going fast-ions with energies between 40 and 70 keV.",

author = "Birgitte Madsen and Mirko Salewski and Heidbrink, \{W. W.\} and L. Stagner and M. Podest{\'a} and D. Lin and Garcia, \{A. V.\} and Hansen, \{Per Christian\} and J. Huang",

year = "2019",

language = "English",

volume = "43C",

editor = "C. Riconda and S. Brezinsek and K. McCarty and D. Burgess and P. Brault and D. Farina",

booktitle = "Proceedings of 46th EPS Conference on Plasma Physics",

publisher = "European Physical Society",

note = "46th EPS Conference on Plasma Physics, EPS 2019 ; Conference date: 08-07-2019 Through 12-09-2019",

}

Madsen, B, Salewski, M, Heidbrink, WW, Stagner, L, Podestá, M, Lin, D, Garcia, AV, Hansen, PC & Huang, J 2019, Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfvén eigenmode activity. in C Riconda, S Brezinsek, K McCarty, D Burgess, P Brault & D Farina (eds), Proceedings of 46th EPS Conference on Plasma Physics. vol. 43C, P1.1026, European Physical Society, 46th EPS Conference on Plasma Physics, Milan, Italy, 08/07/2019. <http://ocs.ciemat.es/EPS2019PAP/html/>

Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfvén eigenmode activity. / Madsen, Birgitte; Salewski, Mirko; Heidbrink, W. W. et al.
Proceedings of 46th EPS Conference on Plasma Physics. ed. / C. Riconda; S. Brezinsek; K. McCarty; D. Burgess; P. Brault; D. Farina. Vol. 43C European Physical Society, 2019. P1.1026.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfvén eigenmode activity

AU - Madsen, Birgitte

AU - Salewski, Mirko

AU - Heidbrink, W. W.

AU - Stagner, L.

AU - Podestá, M.

AU - Lin, D.

AU - Garcia, A. V.

AU - Hansen, Per Christian

AU - Huang, J.

PY - 2019

Y1 - 2019

N2 - Fast-ion velocity-space tomography enables reconstruction of the 2D fast-ion velocity distribution from a set of measurements. Here, we reconstruct the fast-ion velocity distribution for plasmas with strong and weak Alfvén eigenmode (AE) activity using the four-view fast-ion D-alpha (FIDA) diagnostics in the DIII-D tokamak. We find that the fast-ion losses due to strong AE activity are selective in velocity-space with a particularly strong density decrease in the population of co-going fast-ions with energies between 40 and 70 keV.

AB - Fast-ion velocity-space tomography enables reconstruction of the 2D fast-ion velocity distribution from a set of measurements. Here, we reconstruct the fast-ion velocity distribution for plasmas with strong and weak Alfvén eigenmode (AE) activity using the four-view fast-ion D-alpha (FIDA) diagnostics in the DIII-D tokamak. We find that the fast-ion losses due to strong AE activity are selective in velocity-space with a particularly strong density decrease in the population of co-going fast-ions with energies between 40 and 70 keV.

M3 - Article in proceedings

VL - 43C

BT - Proceedings of 46th EPS Conference on Plasma Physics

A2 - Riconda, C.

A2 - Brezinsek, S.

A2 - McCarty, K.

A2 - Burgess, D.

A2 - Brault, P.

A2 - Farina, D.

PB - European Physical Society

T2 - 46th EPS Conference on Plasma Physics

Y2 - 8 July 2019 through 12 September 2019

ER -

Reconstructing the fast-ion velocity distribution in the DIII-D tokamak during Alfvén eigenmode activity

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