First absolute measurements of fast-ion losses in the ASDEX Upgrade tokamak

M. Rodriguez-Ramos; M. Garcia-Munoz; M. C. Jimenez-Ramos; J. Garcia Lopez; J. Galdon-Quiroga; L. Sanchis-Sanchez; J. Ayllon-Guerola; M. Faitsch; J. Gonzalez-Martin; A. Hermann; P. De Marne; J. F. Rivero-Rodriguez; B. Sieglin; A. Snicker

doi:10.1088/1361-6587/aa7e5f

First absolute measurements of fast-ion losses in the ASDEX Upgrade tokamak

M. Rodriguez-Ramos, M. Garcia-Munoz, M. C. Jimenez-Ramos, J. Garcia Lopez, J. Galdon-Quiroga, L. Sanchis-Sanchez, J. Ayllon-Guerola, M. Faitsch, J. Gonzalez-Martin, A. Hermann, P. De Marne, J. F. Rivero-Rodriguez, B. Sieglin, A. Snicker

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16 Citations (Scopus)

Abstract

A new diagnostic technique that allows to obtain absolute fluxes of fast-ion losses measured with absolutely calibrated scintillator based fast-ion loss detectors (FILD) is presented here. First absolute fluxes of fast-ion losses have been obtained in the ASDEX Upgrade tokamak. An instrument function that includes the scintillator efficiency, collimator geometry, optical transmission and camera efficiency has been constructed. The scintillator response to deuterium ions in the relevant energy range of fast-ions has been characterized using a tandem accelerator. Absolute flux of neutral beam injection (NBI) prompt losses has been obtained in magnetohydrodynamic quiescent plasmas. The temporal evolution of the heat load measured with FILD follows that measured at the FILD entrance obtained with an Infra-Red camera looking at the FILD detector head. ASCOT simulations are in good agreement with the absolute heat load of NBI prompt losses measured with FILD.

Original language	English
Article number	105009
Journal	Plasma Physics and Controlled Fusion
Volume	59
Issue number	10
DOIs	https://doi.org/10.1088/1361-6587/aa7e5f
Publication status	Published - 22 Aug 2017
MoE publication type	A1 Journal article-refereed

Funding

This research was supported in part by the Spanish Ministerio de Economia, Industria y Competitividad (RYC-2011-09152, FIS2015-69362-P and ENE2012-31087) FEDER/UE, the Marie Curie FP7 Integration Grant, PCIG11-GA-2012-321455, within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement number 633053 and the V Plan propio de la Universidad de Sevilla (VPPI-US). The views and opinions expressed herein do not necessarily reflect those of the European Commission. We are grateful to C Bravo Falcon for the set-up model in CAD.

Keywords

absolute flux
fast-ion
fast-ion loss detector
ionoluminescence

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Rodriguez-Ramos, M., Garcia-Munoz, M., Jimenez-Ramos, M. C., Lopez, J. G., Galdon-Quiroga, J., Sanchis-Sanchez, L., Ayllon-Guerola, J., Faitsch, M., Gonzalez-Martin, J., Hermann, A., Marne, P. D., Rivero-Rodriguez, J. F., Sieglin, B., & Snicker, A. (2017). First absolute measurements of fast-ion losses in the ASDEX Upgrade tokamak. Plasma Physics and Controlled Fusion, 59(10), Article 105009. https://doi.org/10.1088/1361-6587/aa7e5f

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abstract = "A new diagnostic technique that allows to obtain absolute fluxes of fast-ion losses measured with absolutely calibrated scintillator based fast-ion loss detectors (FILD) is presented here. First absolute fluxes of fast-ion losses have been obtained in the ASDEX Upgrade tokamak. An instrument function that includes the scintillator efficiency, collimator geometry, optical transmission and camera efficiency has been constructed. The scintillator response to deuterium ions in the relevant energy range of fast-ions has been characterized using a tandem accelerator. Absolute flux of neutral beam injection (NBI) prompt losses has been obtained in magnetohydrodynamic quiescent plasmas. The temporal evolution of the heat load measured with FILD follows that measured at the FILD entrance obtained with an Infra-Red camera looking at the FILD detector head. ASCOT simulations are in good agreement with the absolute heat load of NBI prompt losses measured with FILD.",

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Rodriguez-Ramos, M, Garcia-Munoz, M, Jimenez-Ramos, MC, Lopez, JG, Galdon-Quiroga, J, Sanchis-Sanchez, L, Ayllon-Guerola, J, Faitsch, M, Gonzalez-Martin, J, Hermann, A, Marne, PD, Rivero-Rodriguez, JF, Sieglin, B & Snicker, A 2017, 'First absolute measurements of fast-ion losses in the ASDEX Upgrade tokamak', Plasma Physics and Controlled Fusion, vol. 59, no. 10, 105009. https://doi.org/10.1088/1361-6587/aa7e5f

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AU - Galdon-Quiroga, J.

AU - Sanchis-Sanchez, L.

AU - Ayllon-Guerola, J.

AU - Faitsch, M.

AU - Gonzalez-Martin, J.

AU - Hermann, A.

AU - Marne, P. De

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AU - Sieglin, B.

AU - Snicker, A.

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First absolute measurements of fast-ion losses in the ASDEX Upgrade tokamak

Abstract

Funding

Keywords

UN SDGs

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