Dual sightline measurements of MeV range deuterons with neutron and gamma-ray spectroscopy at JET

被引：69

作者：

Eriksson, J. ^{[1
,26
]}

Nocente, M. ^{[2
,3
,92
]}

Binda, F. ^{[1
,26
]}

Cazzaniga, C. ^{[3
,4
]}

Conroy, S. ^{[1
,26
]}

Ericsson, G. ^{[1
,26
]}

Giacomelli, L. ^{[3
,92
]}

Gorini, G. ^{[2
,3
,92
]}

Hellesen, C. ^{[1
,26
]}

Hellsten, T. ^{[5
,42
]}

Hjalmarsson, A. ^{[1
,26
]}

Jacobsen, A. S. ^{[6
,77
]}

Johnson, T. ^{[5
,42
]}

Kiptily, V. ^{[7
,14
]}

Koskela, T. ^{[8
,12
]}

Mantsinen, M. ^{[9
,10
,13
]}

Salewski, M. ^{[6
,77
]}

Schneider, M. ^{[11
,15
]}

Sharapov, S. ^{[7
]}

Skiba, M. ^{[1
,26
]}

Tardocchi, M. ^{[2
,3
,44
]}

Weiszflog, M. ^{[1
,26
]}

Abhangi, M. ^{[45
]}

Abreu, P. ^{[51
]}

Aftanas, M. ^{[48
]}

Afzal, M. ^{[14
]}

Aggarwal, K. M. ^{[31
]}

Aho-Mantila, L. ^{[105
]}

Ahonen, E. ^{[12
]}

Aints, M. ^{[101
]}

Airila, M. ^{[105
]}

Albanese, R. ^{[99
]}

Alegre, D. ^{[57
]}

Alessi, E. ^{[44
]}

Aleynikov, P. ^{[53
]}

Alfier, A. ^{[18
]}

Alkseev, A. ^{[66
]}

Allan, P. ^{[14
]}

Almaviva, S. ^{[90
]}

Alonso, A. ^{[57
]}

Alper, B. ^{[14
]}

Alsworth, I. ^{[14
]}

Alves, D. ^{[51
]}

Ambrosino, G. ^{[99
]}

Ambrosino, R. ^{[100
]}

Amosov, V. ^{[83
]}

Andersson, F. ^{[22
]}

Andersson Sunden, E. ^{[26
]}

Angelone, M. ^{[85
]}

Anghel, A. ^{[80
]}

机构：

[1] Uppsala Univ, Dept Phys & Astron, SE-75105 Uppsala, Sweden

[2] Univ Milano Bicocca, Dipartimento Fis G Occhialini, I-20126 Milan, Italy

[3] Assoc EURATOM ENEA CNR, Ist Fis Plasma Piero Caldirola, I-20125 Milan, Italy

[4] Rutherford Appleton Lab, ISIS Facil, Sci Didcot, Didcot OX11 0QX, Oxon, England

[5] KTH, Sch Elect Engn, S-11428 Stockholm, Sweden

[6] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark

[7] Culham Sci Ctr, CCFE, Abingdon OX14 3E, Oxon, England

[8] Aalto Univ, Dept Appl Phys, FIN-00076 Aalto, Finland

[9] Catalan Inst Res & Adv Studies, Barcelona, Spain

[10] Barcelona Supercomp Ctr, Barcelona 08034, Spain

[11] CEA, IRFM, F-13108 St Paul Les Durance, France

[12] Aalto Univ, FIN-00076 Aalto, Finland

[13] BCS, Barcelona, Spain

[14] Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England

[15] IRFM, CEA, F-13108 St Paul Les Durance, France

[16] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

[17] Consorzio CREATE, I-80125 Naples, Italy

[18] Consorzio RFX, I-35127 Padua, Italy

[19] Daegu Univ, Gyongsan 712174, Gyeongbuk, South Korea

[20] Univ Carlos III Madrid, Dept Fis, Madrid 28911, Spain

[21] Univ Ghent, Dept Appl Phys, B-9000 Ghent, Belgium

[22] Chalmers Univ Technol, Dept Earth & Space Sci, SE-41296 Gothenburg, Sweden

[23] Univ Cagliari, Dept Elect & Elect Engn, I-09123 Cagliari, Italy

[24] Comenius Univ, Fac Math Phys & Informat, Dept Expt Phys, Bratislava 84248, Slovakia

[25] Univ Strathclyde, Dept Phys & Appl Phys, Glasgow G4 ONG, Lanark, Scotland

[26] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden

[27] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[28] KTH, SCI, Dept Phys, SE-10691 Stockholm, Sweden

[29] Univ Oxford, Dept Phys, Oxford OX1 2JD, England

[30] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[31] Queens Univ, Dept Pure & Appl Phys, Belfast BT7 1NN, Antrim, North Ireland

[32] Univ Catania, Dipartimento Ingn Elettr Elettr & Sistemi, I-95125 Catania, Italy

[33] Dublin City Univ, Dublin, Ireland

[34] CRPP, EPFL, CH-1015 Lausanne, Switzerland

[35] CNRS, UMR 7648, Ecole Polytech, F-91128 Palaiseau, France

[36] EUROfus Programme Management Unit, D-85748 Garching, Germany

[37] Culham Sci Ctr, EUROfus Programme Management Unit, Abingdon OX14 3DB, Oxon, England

[38] European Commiss, B-1049 Brussels, Belgium

[39] FOM Inst DIFFER, NL-3430 BE Nieuwegein, Netherlands

[40] Forsch Zentrum Julich GmbH, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany

[41] Fus Energy Joint Undertaking, Barcelona 08019, Spain

[42] KTH, EES, Fus Plasma Phys, SE-10044 Stockholm, Sweden

[43] Gen Atom, San Diego, CA 85608 USA

[44] IFP CNR, I-20125 Milan, Italy

[45] Inst Plasma Res, Gandhinagar 382428G, Gujarat, India

[46] Bulgarian Acad Sci, Inst Elect, BU-1784 Sofia, Bulgaria

[47] Inst Plasma Phys & Laser Microfus, PL-01497 Warsaw, Poland

[48] Inst Plasma Phys AS CR, Prague 182 00 8, Czech Republic

[49] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[50] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, Brazil

来源：

NUCLEAR FUSION | 2015年 / 55卷 / 12期

关键词：

neutron spectroscopy; gamma-ray spectroscopy; fast ions; MeV range; SCINTILLATORS; SPECTROMETER; EMISSION;

D O I：

10.1088/0029-5515/55/12/123026

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：

Observations made in a JET experiment aimed at accelerating deuterons to the MeV range by third harmonic radio-frequency (RF) heating coupled into a deuterium beam are reported. Measurements are based on a set of advanced neutron and gamma-ray spectrometers that, for the first time, observe the plasma simultaneously along vertical and oblique lines of sight. Parameters of the fast ion energy distribution, such as the high energy cut-off of the deuteron distribution function and the RF coupling constant, are determined from data within a uniform analysis framework for neutron and gamma-ray spectroscopy based on a one-dimensional model and by a consistency check among the individual measurement techniques. A systematic difference is seen between the two lines of sight and is interpreted to originate from the sensitivity of the oblique detectors to the pitch-angle structure of the distribution around the resonance, which is not correctly portrayed within the adopted one dimensional model. A framework to calculate neutron and gamma-ray emission from a spatially resolved, two-dimensional deuteron distribution specified by energy/pitch is thus developed and used for a first comparison with predictions from ab initio models of RF heating at multiple harmonics. The results presented in this paper are of relevance for the development of advanced diagnostic techniques for MeV range ions in high performance fusion plasmas, with applications to the experimental validation of RF heating codes and, more generally, to studies of the energy distribution of ions in the MeV range in high performance deuterium and deuterium-tritium plasmas.

引用

页数：15

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