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Sortais P, André T, Angot J, Bouat S, Jacob J, Lamy T, Sole P. Frequency scaling with miniature COmpact MIcrowave and Coaxial ion sources. Rev Sci Instrum 2014; 85:02C316. [PMID: 24593653 DOI: 10.1063/1.4852275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We will present recent basic developments about possible extension of the COMIC (for COmpact MIcrowave and Coaxial) devices up to 5.8 GHz in place of the present 2.45 GHz operation [P. Sortais, T. Lamy, J. Médard, J. Angot, L. Latrasse, and T. Thuillier, Rev. Sci. Instrum. 81, 02B314 (2010)]. New applications associating multiple COMIC devices for thin film deposition will be described and we will explain why an increase of the current density delivered by each individual ion source could lead to the increase of the deposition rate. For this purpose, we will present results of about two devices working at 5.8 GHz. The first one is a tiny ion source, the world smallest microwave ion source, exactly similar to COMIC but operating at 5.8 GHz with a quarter wave cavity structure and a few watts microwave power consumption. We will show that the frequency scaling effect is effective inside such small machines. The second one is a more ambitious ion source designed around a three quarter wave structure that works with a few tens of watts at 5.8 GHz.
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Affiliation(s)
- Pascal Sortais
- Laboratoire de Physique Subatomique et de Cosmologie de Grenoble - UJF-CNRS/IN2P3-INPG, 53 rue des Martyrs, 38026 Grenoble Cedex, France
| | - Thomas André
- Laboratoire de Physique Subatomique et de Cosmologie de Grenoble - UJF-CNRS/IN2P3-INPG, 53 rue des Martyrs, 38026 Grenoble Cedex, France
| | - Julien Angot
- Laboratoire de Physique Subatomique et de Cosmologie de Grenoble - UJF-CNRS/IN2P3-INPG, 53 rue des Martyrs, 38026 Grenoble Cedex, France
| | - Sophie Bouat
- Laboratoire de Physique Subatomique et de Cosmologie de Grenoble - UJF-CNRS/IN2P3-INPG, 53 rue des Martyrs, 38026 Grenoble Cedex, France
| | - Josua Jacob
- Laboratoire de Physique Subatomique et de Cosmologie de Grenoble - UJF-CNRS/IN2P3-INPG, 53 rue des Martyrs, 38026 Grenoble Cedex, France
| | - Thierry Lamy
- Laboratoire de Physique Subatomique et de Cosmologie de Grenoble - UJF-CNRS/IN2P3-INPG, 53 rue des Martyrs, 38026 Grenoble Cedex, France
| | - Patrick Sole
- Laboratoire de Physique Subatomique et de Cosmologie de Grenoble - UJF-CNRS/IN2P3-INPG, 53 rue des Martyrs, 38026 Grenoble Cedex, France
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Maunoury L, Delahaye P, Angot J, Dubois M, Dupuis M, Frigot R, Grinyer J, Jardin P, Leboucher C, Lamy T. Future carbon beams at SPIRAL1 facility: which method is the most efficient? Rev Sci Instrum 2014; 85:02A504. [PMID: 24593427 DOI: 10.1063/1.4828374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Compared to in-flight facilities, Isotope Separator On-Line ones can in principle produce significantly higher radioactive ion beam intensities. On the other hand, they have to cope with delays for the release and ionization which make the production of short-lived isotopes ion beams of reactive and refractory elements particularly difficult. Many efforts are focused on extending the capabilities of ISOL facilities to those challenging beams. In this context, the development of carbon beams is triggering interest [H. Frånberg, M. Ammann, H. W. Gäggeler, and U. Köster, Rev. Sci. Instrum. 77, 03A708 (2006); M. Kronberger, A. Gottberg, T. M. Mendonca, J. P. Ramos, C. Seiffert, P. Suominen, and T. Stora, in Proceedings of the EMIS 2012 [Nucl. Instrum. Methods Phys. Res. B Production of molecular sideband radioisotope beams at CERN-ISOLDE using a Helicon-type plasma ion source (to be published)]: despite its refractory nature, radioactive carbon beams can be produced from molecules (CO or CO2), which can subsequently be broken up and multi-ionized to the required charge state in charge breeders or ECR sources. This contribution will present results of experiments conducted at LPSC with the Phoenix charge breeder and at GANIL with the Nanogan ECR ion source for the ionization of carbon beams in the frame of the ENSAR and EMILIE projects. Carbon is to date the lightest condensable element charge bred with an ECR ion source. Charge breeding efficiencies will be compared with those obtained using Nanogan ECRIS and charge breeding times will be presented as well.
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Affiliation(s)
- L Maunoury
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - P Delahaye
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - J Angot
- LPSC, Université Joseph Fourier Grenoble 1, Grenoble INP, 53 rue des martyrs, 38026 Grenoble Cedex, France
| | - M Dubois
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - M Dupuis
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - R Frigot
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - J Grinyer
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - P Jardin
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - C Leboucher
- GANIL, CEA/CNRS, Bd Henri Becquerel, BP 55027, 14076 Caen Cedex 5, France
| | - T Lamy
- LPSC, Université Joseph Fourier Grenoble 1, Grenoble INP, 53 rue des martyrs, 38026 Grenoble Cedex, France
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