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Liebel, G.
Technics G.m.b.H. Europa, Kirchheim/Muenchen (Germany, F.R.)1983
Technics G.m.b.H. Europa, Kirchheim/Muenchen (Germany, F.R.)1983
AbstractAbstract
[en] The invention concerns an ion beam gun with a pair of electrodes for applying a high voltage of high frequency, for ionizing an ionization gas. The ions produced are expelled in an extraction electrode situated behind the pair of electrodes. (orig./HP)
[de]
Die Erfindung betrifft eine Ionenstrahlkanone mit einem Paar Elektroden zum Anlegen einer hochfrequenten Hochspannung zum Ionisieren eines Ionisationsgases. Erzeugte Ionen werden durch eine in Ionenstrahlrichtung hinter dem Elektrodenpaar angeordnete Extraktionselektrode extrahiert. (orig./HP)Original Title
Ionenstrahlkanone
Primary Subject
Source
24 Mar 1983; 31 Aug 1981; 9 p; DE PATENT DOCUMENT 3134337/A/; ?: 31 Aug 1981
Record Type
Patent
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Celata, C.M.; Abbott, S.; Bennett, M.; Bordua, M.; Calvert, J.; Dwinell, R.; Howard, D.; Hunt, D.; Feinberg, R.; Force, R.
Proceedings of the 1993 Particle Accelerator Conference: Volume 51993
Proceedings of the 1993 Particle Accelerator Conference: Volume 51993
AbstractAbstract
[en] The Bevalac extraction time was increased from 1 to a maximum of 9.5 seconds, thus increasing the synchrotron duty factor and the data rate for experiments by a factor of 2-3, depending on the magnetic field. This slow rate of extraction required improved control of beam time structure, since magnet ripple remained approximately constant while the spill rate was decreased. Measurements of spill structure for the long spill are presented. Changes made to the accelerator systems are described, as well as tuning procedures found to be necessary, and the ultimate hardware limits found for the spill length
Primary Subject
Source
Institute of Electrical and Electronics Engineers, Inc., New York, NY (United States); American Physical Society, Washington, DC (United States); 829 p; 1993; p. 3748-3750; PAC '93: international particle accelerator conference; Washington, DC (United States); 17-20 May 1993; Available from IEEE Service Center, 445 Hoes Lane, Piscataway, NJ 08854-4150
Record Type
Report
Literature Type
Conference
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Hurt, Bernard; Kervizic, Jacques.
Compagnie Generale de Radiologie, 75 - Paris (France)1975
Compagnie Generale de Radiologie, 75 - Paris (France)1975
AbstractAbstract
[en] The extraction of the beam of accelerated particles from the air gap of a cyclotron requires an intense electric field created by an extracting electrode fitted on the periphery of the cyclotron and an adjustment of the magnetic field near this extracting electrode. The invention concerns a magnetic adjustment system of the passive type which can be used in intense magnetic field areas. This system includes a block in composite magnetic material made of a stack of small plates of materials of different permeabilities, arranged in planes and making pre-set value angles with the plane of the mean paths of the particle beam
[fr]
L'extraction, hors de l'entrefer d'un cyclotron, du faisceau de particules accelerees necessite un champ electrique intense cree par une electrode extractrice disposee a la peripherie du cyclotron et une correction du champ magnetique au voisinage de cette electrode extractrice. L'invention a pour objet un dispositif de correction magnetique du type passif pouvant etre utilise dans des zones de champ magnetique intense. Ce dispositif comprend un bloc en materiau magnetique composite forme par un empilage de plaquettes en materiau de differentes permeabilites, disposees dans des plans, faisant avec le plan des trajectoires moyennes du faisceau de particules des angles de valeurs preOriginal Title
Dispositif de correction magnetique des trajectoires d'un faisceau de particules accelerees emergeant d'un cyclotron
Primary Subject
Source
8 Aug 1975; 7 p; FR PATENT DOCUMENT 2320680/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
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INIS VolumeINIS Volume
INIS IssueINIS Issue
Duc Tien Tran; Kervizic, Jacques; Hurt, Bernard.
Compagnie Generale de Radiologie, 75 - Paris (France)1975
Compagnie Generale de Radiologie, 75 - Paris (France)1975
AbstractAbstract
[en] The invention concerns improvements to the extracting electrode adjacent to the particle source located in the centre of cyclotron type accelerators. This improved extracting electrode reduces the vertical focusing and defocusing effects due to the accelerating hyperfrequency electric field generated between the dees and the cyclotron (or synchrocyclotron) mass. It is made of a metal block, appreciably prismatic in shape, with a window on its 'intake' face to allow the beam through and opening on to a deep notch cut in the block. This notch, bounded by two curvilinear side walls, forms a channel for the beam to pass, the hyperfrequency electric field having a low value component in this channel along the perpendicular to the plane of the mean paths of the beam
[fr]
L'invention a pour objet des perfectionnements a l'electrode extractrice disposee au voisinage de la source de particules situee au centre des accelerateurs du type cyclotron. Cette electrode extractrice perfectionnee permet de reduire les effets de focalisation et de defocalisation verticales dus au champ electrique hyperfrequence accelerateur cree entre les 'Dees' et la masse d'un cyclotron (ou d'un synchrocyclotron). Elle est constituee d'un bloc metallique de forme sensiblement prismatique, muni sur l'une de ses faces, dite face d'entree, d'une fenetre pour le passage du faisceau, s'ouvrant sur une profonde entaille formee dans le bloc. Cette entaille, delimitee par deux parois laterales curvilignes constitue un canal pour le passage du faisceau, le champ electrique H.F. ayant, dans ce canal, une composante de faible valeur suivant la perpendiculaire au plan des trajectoires moyennes du faisceauOriginal Title
Perfectionnement a l'electrode extractrice disposee au voisinage de la source de particules des accelerateurs du type cyclotron
Primary Subject
Source
21 Jul 1975; 13 p; FR PATENT DOCUMENT 2319273/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
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AbstractAbstract
No abstract available
Primary Subject
Source
Published in summary form only.
Record Type
Journal Article
Journal
Review of Scientific Instruments; v. 46(1); p. 104
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AbstractAbstract
No abstract available
Primary Subject
Source
3 Apr 1973; 4 p; US PATENT DOCUMENT 3,725,709
Record Type
Patent
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
5. particle accelerator conference; San Francisco, California, USA; 5 Mar 1973; See CONF-730310--.
Record Type
Journal Article
Literature Type
Conference
Journal
IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci; v. NS-20(3); p. 392-394
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AbstractAbstract
[en] A method and apparatus are described for electrostatically extracting high beam currents at improved energy from small dia high magnetic field cyclotrons by deflecting particles from their trajectory within an electrostatic field traversing an extraction channel. Magnetic material immediately adjacent to the inside of at least a portion of the channel first reduces the fringe field and then reverses its normal gradient to assist in extraction and to focus the extracted beam radially with respect to the center of the cyclotron. (U.S.)
Original Title
Patent
Primary Subject
Source
13 May 1975; 4 p; US PATENT DOCUMENT 3,883,761
Record Type
Patent
Country of publication
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
Sep 1972; 10 p; 4. international conference on magnet technology; Upton, NY; 19 Sep 1972; CONF-720908--28
Record Type
Report
Literature Type
Conference
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AbstractAbstract
No abstract available
Primary Subject
Source
6. international cyclotron conference; Vancouver, B. C., Canada; 18 Jul 1972; See CONF-720717--.
Record Type
Journal Article
Literature Type
Conference
Journal
AIP (Amer. Inst. Phys.) Conf. Proc; (no.9); p. 315-321
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