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Production of metallic stable ion beams for GANIL and SPIRAL2

Abstract : GANIL has been producing many stable beams for nearly 30 years. Constant progress has been made in terms of intensity, stability and reliability. The intensity for some stable metallic beams now exceeds or approaches the pμA level at an energy up to 95 MeV/u: 1.14 pμA for 36S (65% enriched) at 77 MeV/u, 0.35 pμA for 58Ni (63%) at 74 MeV/u. The presentation highlights recent results obtained with 50Ti using the MIVOC (Metallic Ions from Volatile Compounds) methods on the ECR4 ion source. The Titanium beam was produced using the organo-metallic compound Titanocene : Cp*TiMe3. The synthesis of this metallocene compound has been successfully performed by the IPHC-Strasbourg from isotopically enriched 50Ti metal. Two tests have been done with the natural Titanocene (48Ti) to validate the new compound, and to qualify the intensity and beam stability. The good results obtained led us to program the Physics experiment in 2013, September and we have produced a very stable 50Ti10+ beam at an intensity of 20μA for 300 hours. The Spiral 2 facility, currently of installation, will provide gaseous and metallic stable ion beams. The ion source choice for the commissioning of the stable beams Q/A=1/3 is the ECRIS PHOENIX V2. This ECRIS has been designed by LPSC Grenoble and several tests of stable metallic beams have been realized in this laboratory. The results for Nickel (58Ni19+) and calcium (40Ca16+) are given.
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F. Lemagnen, C. Barué, C. Canet, M. Dupuis, J.L. Flambard, et al.. Production of metallic stable ion beams for GANIL and SPIRAL2. 21st InternationalWorkshop on ECR Ion Sources (ECRIS 2014), Aug 2014, Nizhny Novgorod, Russia. pp.45-48. ⟨in2p3-01057669⟩

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