Effect of the Plasma Chamber Radius on the High Charge State Production in an ECR Ion Source

Abstract : The version 2 and 3 of the 18 GHz PHOENIX ECR ion source have been developed in the framework of the SPIRAL2 project. The former V2 design focused on maximizing the radial magnetic confinement at the plasma chamber wall, resulting in a compact chamber volume of 0.6 liter with a diameter of 62 mm. The new V3 design focused on a larger diameter of 89 mm (chamber volume 1.4 liter) keeping the radial field intensity as high as possible and enhanced pumping features. The two versions having nearly the same axial mirror structure and the same radial magnetic field intensity at wall, it is of interest to compare their performance as a function of the plasma chamber radius. Preliminary experiments have shown an improvement of high charge state production of Argon up to 120% in the V3 source with respect to the V2, delivering 120 μA of Ar14+ beam for instance. The V3 results will be presented, compared with the V2 and possible physics explanation for such an effect reviewed.
Type de document :
Poster
17th International Conference on Ion Sources (ICIS 2017), Oct 2017, Genève, Switzerland. 2017, 〈http://icis2017.web.cern.ch/〉
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http://hal.in2p3.fr/in2p3-01617821
Contributeur : Michel Lion <>
Soumis le : mardi 17 octobre 2017 - 10:38:12
Dernière modification le : mardi 22 mai 2018 - 21:48:11

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  • HAL Id : in2p3-01617821, version 1

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T. Thuillier, L. Maunoury, C. Barué, J. Angot, L. Bonny, et al.. Effect of the Plasma Chamber Radius on the High Charge State Production in an ECR Ion Source. 17th International Conference on Ion Sources (ICIS 2017), Oct 2017, Genève, Switzerland. 2017, 〈http://icis2017.web.cern.ch/〉. 〈in2p3-01617821〉

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