Journal articles
Negative ion source development for a photoneutralization based neutral beam system for future fusion reactors
A. Simonin
1
R. Agnello
2
Stéphane Béchu
3
J. Bernard
1
C. Blondel
4
Jean-Pierre Boeuf
5
D. Bresteau
4
Gilles Cartry
6
W. Chaibi
7
C. Drag
4
B Duval
2
H de Esch
1
G. Fubiani
8
I. Furno
2
C. Grand
1
Ph Guittienne
9
A. Howling
2
R. Jacquier
2
C. Marini
2
I. Morgal
6
8
LAPLACE-GREPHE - Groupe de Recherche Energétique, Plasmas et Hors Equilibre
LAPLACE - LAboratoire PLasma et Conversion d'Energie
9
Helyssen
A. Simonin 1
Author
R. Agnello 2
Author
Stéphane Béchu 3
Author IdHAL : stephane-bechu ORCID : https://orcid.org/0000-0003-3333-8991
J. Bernard 1
Author
C. Blondel 4
Author
Jean-Pierre Boeuf 5
Author Employer institution : Centre National de la Recherche Scientifique
D. Bresteau 4
Author
Gilles Cartry 6
Author IdHAL : gilles-cartry ORCID : https://orcid.org/0000-0002-6081-0350
W. Chaibi 7
Author IdHAL : walid-chaibi ORCID : https://orcid.org/0000-0003-2180-1598
C. Drag 4
Author IdHAL : cyril-drag ORCID : https://orcid.org/0000-0001-9247-3945
B P Duval 2
Author
H P L de Esch 1
Author
G. Fubiani 8
Author Employer institution : Centre National de la Recherche Scientifique IdHAL : gwenael-fubiani ORCID : https://orcid.org/0000-0001-8920-9908
I. Furno 2
Author
C. Grand 1
Author
Ph Guittienne 9
Author
1
IRFM - Institut de Recherche sur la Fusion par confinement Magnétique (CEA Cadarache, 13108 Saint-Paul-lèz-Durance - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DSM/IRFM (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
2
EPFL - Ecole Polytechnique Fédérale de Lausanne (CH-1015 Lausanne, Switzerland - Switzerland)
3
LPSC - Laboratoire de Physique Subatomique et de Cosmologie (53 avenue des Martyrs - 38026 Grenoble Cedex - France)
- Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology (46 avenue Félix Viallet 38031 Grenoble Cedex 1 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5821 (France)
- UGA [2016-2019] - Université Grenoble Alpes [2016-2019] (38058 Grenoble cedex - France)
4
LAC - Laboratoire Aimé Cotton (France)
- CNRS - Centre National de la Recherche Scientifique : UPR3321 (France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- ENS Cachan - École normale supérieure - Cachan (61, avenue du Président Wilson - 94230 Cachan - France)
5
LAPLACE - LAboratoire PLasma et Conversion d'Energie (118 Route de Narbonne 31062 TOULOUSE CEDEX 9
ENSEEIHT, 2 rue Camichel, 31071 Toulouse Cedex 7 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5213 (France)
- UT3 - Université Toulouse III - Paul Sabatier (118 route de Narbonne - 31062 Toulouse - France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- Toulouse INP - Institut National Polytechnique (Toulouse) (France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
6
PIIM - Physique des interactions ioniques et moléculaires (Campus de Saint-Jérôme
Aile 3, Service 322
Avenue Escadrille Normandie-Niémen
13397 Marseille cedex 20 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7345 / UMR6633 / URA773 (France)
- AMU - Aix Marseille Université : UMR7345 / UMR6633 / URA773 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
7
ARTEMIS - Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (Bd de l'Observatoire BP 4229 06304 NICE CEDEX 4 - France)
- UNS - Université Nice Sophia Antipolis (... - 2019) (Parc Valrose - BP 2135 - 06103 Nice cedex 2 - France)
- COMUE UCA - COMUE Université Côte d'Azur (2015 - 2019) (Parc Valrose, 28 avenue Valrose 06108 Nice Cedex 2 - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de la Côte d'Azur (France)
- UCA - Université Côte d'Azur (Parc Valrose, 28 avenue Valrose 06108 Nice Cedex 2 - France)
- COMUE UCA - COMUE Université Côte d'Azur (2015 - 2019) (Parc Valrose, 28 avenue Valrose 06108 Nice Cedex 2 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7250 (France)
- UCA - Université Côte d'Azur (Parc Valrose, 28 avenue Valrose 06108 Nice Cedex 2 - France)
8
LAPLACE-GREPHE - Groupe de Recherche Energétique, Plasmas et Hors Equilibre (118, route de Narbonne
31062 Toulouse cedex 9 - France)
- LAPLACE - LAboratoire PLasma et Conversion d'Energie (118 Route de Narbonne 31062 TOULOUSE CEDEX 9
ENSEEIHT, 2 rue Camichel, 31071 Toulouse Cedex 7 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5213 (France)
- UT3 - Université Toulouse III - Paul Sabatier (118 route de Narbonne - 31062 Toulouse - France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- Toulouse INP - Institut National Polytechnique (Toulouse) (France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
9
Helyssen (Route de la Louche 31, CH-1092 Belmont-sur-Lausanne - Switzerland)
Abstract : In parallel to the developments dedicated to the ITER neutral beam system, CEA-IRFM with laboratories in France and Switzerland are studying the feasibility of a new generation of Neutral Beam (NB) system able to provide heating and current drive for the future DEMOnstration fusion reactor (DEMO). For the steady-state scenario, the NB system will have to provide a high neutral beam power level with a high wall-plug efficiency (~60%). Neutralization of the energetic negative ions by photodetachment (so called photoneutralization), if feasible, appears to be the ideal solution to meet these performances, in the sense that it could offer a high beam neutralization rate (> 80%) and a wall-plug efficiency higher than 60%. The main challenge of this new injector concept is the achievement of a very high power photon flux which could be provided by 3 MW Fabry-Perot optical cavities implanted along the 1 MeV D-beam in the neutralizer stage. The beamline topology is tall and narrow to provide laminar ion beam sheets, which will be entirely illuminated by the intra-cavity photon beams propagating along the vertical axis. The paper describes the present R&D (experiments and modelling) addressing the development of a new ion source concept (Cybele source) which is based on a magnetized plasma column. Parametric studies of the source are performed using Langmuir probes in order to characterize and compare the plasma parameters in the source column with different plasma generators, such as filamented cathodes, radio-frequency driver and a helicon antenna specifically developed at SPC-EPFL satisfying the requirements for the Cybele (axial magnetic field of 10 mT, source operating pressure: 0.3 Pa in hydrogen or deuterium). The paper compares the performances of the three plasma generators. It is shown that the helicon plasma generator is a very promising candidate to provide an intense and uniform negative ion beam sheet.
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Journal articles
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https://hal-amu.archives-ouvertes.fr/hal-02380026
Contributor : Gilles Cartry Connect in order to contact the contributor
Submitted on : Tuesday, November 26, 2019 - 9:26:49 AM
Last modification on : Wednesday, November 17, 2021 - 2:46:34 PM
Contributor : Gilles Cartry Connect in order to contact the contributor
Submitted on : Tuesday, November 26, 2019 - 9:26:49 AM
Last modification on : Wednesday, November 17, 2021 - 2:46:34 PM
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- HAL Id : hal-02380026, version 1
- DOI : 10.1088/1367-2630/18/12/125005
Collections
UNIV-AMU | UNIV-TLSE3 | ENS-CACHAN | OCA | DSM-IRFM | CEA | ARTEMIS | PIIM | INSU | LPSC | IN2P3 | UNICE | UNIV-COTEDAZUR | CEA-DRF | CEA-CAD | CNRS | LAPLACE | UGA | ANR | LPSC-PLASMAS | ENS-PARIS-SACLAY
Citation
A. Simonin, R. Agnello, Stéphane Béchu, J. Bernard, C. Blondel, et al.. Negative ion source development for a photoneutralization based neutral beam system for future fusion reactors. New Journal of Physics, Institute of Physics: Open Access Journals, 2016, 18 (12), pp.125005. ⟨10.1088/1367-2630/18/12/125005⟩. ⟨hal-02380026⟩
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