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AbstractAbstract
No abstract available
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Short communication only.
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Journal Article
Journal
Nuclear Instruments and Methods; ISSN 0029-554X; 
; v. 169(3); p. 387-388
; v. 169(3); p. 387-388
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AbstractAbstract
[en] Preliminary experiments are described that utilize some of the unique properties of intense electron beams to help achieve the necessary conditions of high energy and power density. The experiments are divided into two groups, dealing with the study of beam dynamics and with plasma heating. (MOW)
Primary Subject
Source
Conference on electrostatic and electromagnetic confinement of plasmas and the phenomenology of relativistic electron beams; New York, NY; 5 Mar 1974
Record Type
Journal Article
Literature Type
Conference
Journal
Annals of the New York Academy of Sciences; v. 251 p. 483-493
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INIS VolumeINIS Volume
INIS IssueINIS Issue
Delaunay, M.; Geller, R.; Jacquot, C.
Association Euratom-CEA, Centre d'Etudes Nucleaires de Grenoble, 38 (France). Service Ionique Generale1980
Association Euratom-CEA, Centre d'Etudes Nucleaires de Grenoble, 38 (France). Service Ionique Generale1980
AbstractAbstract
[en] The aim of the present paper is to introduce the Swedish French Project and to explain its philosophy and expectations. We compare it to other injectors of the same family and underline the conceptual differences. Let us recall that the D- ions are obtained through the following reactions: [D2+ or D+ or D0] + [Cs or Na] → D-. The best rates are achieved with Cesium (approximately 30%) and incident ions of < 1 keV, but it is difficult to create convenient beams at such low energies. Therefore, sodium cells exhibing less efficiency (approximately 18%) are also utilized, because these rates are achieved with incident particle beams of 10 - 20 keV
Primary Subject
Source
Sep 1980; 16 p; 2. Joint Varenna-Grenoble international symposium on heating in toroidal plasmas; Como, Italy; 3 - 12 Sep 1980
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Report
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Conference
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Hemsworth, R.S.; Aldcroft, D.A.; Allen, T.K.; Bayes, D.V.; Burcham, J.N.; Cole, H.C.; Cowlin, M.C.; Coultas, J.C.; Hay, J.H.; McKay, W.J.
Proceedings of the joint Varenna-Grenoble international symposium on heating in toroidal plasmas. Grenoble, 3-7 July 19781978
Proceedings of the joint Varenna-Grenoble international symposium on heating in toroidal plasmas. Grenoble, 3-7 July 19781978
AbstractAbstract
[en] The DITE Phase II neutral injection system utilises a novel high efficiency plasma source to illuminate a three electrode extraction system operating at 30 kV. The plasma source is a natural development from the multi-dipole permanent magnet confinement system used for basic plasma physics studies and in the Oak Ridge large duopigatron. The design is mechanically simple, gives high electrical efficiency and good uniformity of plasma density across the extraction system. Both Phase II beam lines have two ion sources, each with an extraction area of 8x36 cms and delivering approximately > 300 kW of neutrals to the DITE plasma. Details are given of source efficiency, beam divergence and beam line design
Primary Subject
Source
v. 1 p. 83-88; 1978; v. 1 p. 83-88; Centre d'Etudes Nucleaires; Grenoble, France; International symposium on heating in toroidal plasmas; Grenoble, France; 3 - 7 Jul 1978; Available from M. T. Consoli, CEN-Grenoble
Record Type
Book
Literature Type
Conference
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Bottiglioni, F.; Coutant, J.; Fois, M.
Association Euratom-CEA, Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France). Groupe de Recherches sur la Fusion Controlee; CEA Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France). Dept. de Physique du Plasma et de la Fusion Controlee1976
Association Euratom-CEA, Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France). Groupe de Recherches sur la Fusion Controlee; CEA Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France). Dept. de Physique du Plasma et de la Fusion Controlee1976
AbstractAbstract
[en] The main components of a cluster injection line intended for plasma heating is briefly discussed, that is the beam source, the cluster ionizer and the accelerating tube, as well as the behavior of clusters interacting with a plasma. Outlines of the experiment of cluster injection into TFR, in progress at Fontenay-aux-Roses, and expected results will be presented and discussed all along the paper
Primary Subject
Source
Aug 1976; 38 p
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Report
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AbstractAbstract
[en] A device and method for relativistic electron beam heating of a high density plasma in a small localized region. A relativistic electron beam generator produces a high voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high density target plasma which typically comprises dt, dd, hydrogen boron or similar thermonuclear gas at a density of 1017 to 1020 electrons per cubic centimeter. The target plasma is ionized prior to application of the electron beam by means of a laser or other preionization source. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 mev, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high density target plasma causing the relativistic electron beam to efficiently deposit its energy into a small localized region within the high density plasma target
Original Title
Patent
Primary Subject
Source
9 Jun 1981; v p; US PATENT DOCUMENT 4,272,319/A/; U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50
Record Type
Patent
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INIS VolumeINIS Volume
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AbstractAbstract
No abstract available
Primary Subject
Source
Letter-to-the-editor.
Record Type
Journal Article
Journal
Nuclear Fusion; v. 16(1); p. 142-144
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AbstractAbstract
[en] The basic theory of the neutral injection heating of a toroidal plasma is presented. This consists of the deposition of the fast ions, their energy loss, scattering and radial diffusion, followed by the effect of this method of heating on the plasma temperature, current and rotation, and the production of α particles. Special emphasis will be placed on problem areas which may prevent ignition being achieved. In particular the subject of the injection energy and power level required to reach ignition with different scaling laws will be discussed
Primary Subject
Source
Coppi, B.; Leotta, G.G.; Pfirsch, D.; Pozzoli, R.; Sindoni, E. (eds.); Commission of the European Communities, Brussels (Belgium); 490 p; nd; v. 1 p. 359-371; International school of plasma physics; Varenna, Italy; 27 Aug - 8 Sep 1979
Record Type
Report
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Conference
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AbstractAbstract
[en] The author describes a new concept aimed at the realization of inertial thermonuclear fusion by relativistic electrcn beams. A magnetic mirror is placed behind the exploded pusher. It allows very high current densities to be accelerated owing to the role of ions in the diode, and the electrons which fluctuate round the anode to be reflected and gives a high enhancement of energy deposition. (Auth.)
Original Title
Projet d'experience de fusion par confinement inertiel utilisant un chauffage par electrons oscillant dans un miroir magnetique
Primary Subject
Record Type
Journal Article
Journal
Nuclear Instruments and Methods; ISSN 0029-554X; ; v. 161(1); p. 13-17
; v. 161(1); p. 13-17
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Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Capdequi-Peyranere, P.
CEA Fontenay-aux-Roses, 92 (France); Faculte des Sciences de l'Universite de Paris, 75 (France)1966
CEA Fontenay-aux-Roses, 92 (France); Faculte des Sciences de l'Universite de Paris, 75 (France)1966
AbstractAbstract
[en] A study has been made of a new method of transverse injection of charged particles into a magnetic mirror configuration. This injection scheme permits the penetration and temporary capture by non-adiabatic effect of a particle beam of approximately 1 cm2 cross-section. A theoretical study of the injection and capture is made in the approximation that space charge is negligible. The original programs for IBM 7094 computer calculations are described; these programs were used to obtain an optimization of the configuration. The results of a statistical numerical study of the optimum configuration are then given. This study indicates that, if the energy of the particles of the beam is about 1 per cent greater than a minimum penetration energy, the entire beam can be captured with an average capture length of 100 meters (50 reflections between the two mirrors). If the energy is about 4 per cent greater than the minimum penetration energy, the capture length is reduced to 40 meters. We have studied the distribution of energy transverse and longitudinal with the magnetic field for the population of captured particles. For the cases of injected molecular hydrogen ions or heavy CH4+ ions, a study is made of the capture time of protons resulting from the dissociation of the ions by collisions with the neutral gas. Finally, we describe a model experiment using electrons designed to provide an experimental verification of the capture of the primary beam. (author)
[fr]
On etudie un nouveau schema d'injection transversale de particules chargees dans une configuration magnetique a miroirs. Ce mode d'injection permet la penetration et la capture temporaire par effet non adiabatique d'un faisceau de particules presentant une section de l'ordre de 1 cm2. Une etude theorique du probleme de l'injection et de la capture est faite en supposant la charge d'espace negligeable. On decrit des programmes originaux de calcul sur ordinateur IBM 7094 permettant l'optimisation de la configuration. On donne ensuite les resultats d'une etude numerique statistique de la capture dans la configuration obtenue. Cette etude montre que si l'energie des particules du faisceau est de 1 pour cent superieure a une energie minimum de penetration, la totalite du faisceau peut etre capturee avec une longueur moyenne de capture de 100 metres (50 reflexions entre lesdeux miroirs). Si l'energie est de 4 pour cent superieure a l'energie minimum de penetration la longueur de capture se reduit 40 metres. On etudie la repartition de l'energie de la population des particules capturees en energie perpendiculaire et energie longitudinale au champ magnetique. Les particules injectees etant supposees etre des ions moleculaires d'hydrogene ou des ions lourds CH4+, une etude du temps de capture des protons resultant d'une dissociation des ions injectes sur le gaz neutre est faite. On decrit enfin un modele a electrons destine a apporter une verification experimentale de la capture du faisceau primaire. (auteur)Original Title
Etude de l'injection et de la capture temporaire d'un faisceau de particules chargees dans une configuration magnetique ouverte. Optimisation de la configuration. Cas de la symetrie de revolution: Machine a miroirs
Primary Subject
Source
Dec 1966; [134 p.]; 7 refs.; These sciences
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Report
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Thesis/Dissertation
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