Latest developments on multicharged E.C.R. ion sources at GANIL

International audienc

First results of the 14.5 GHz GANIL ECR source with the C.W. and the pulsed operation mode

International audienceA 14.5 GHz ECR source has been designed and built at GANIL in order to improve the currents, mainly the heaviest ion beam intensities (Pb, U). We give the first results obtained with the C.W operation used on the cyclotron machines, and those we can get with the pulsed operalion mode which concerns Linacs and other machines

Status report on GANIL-SPIRAL1

International audienceThe GANIL facility (Caen, France) (Figure 1) is dedicated to the acceleration of heavy ion beams for nuclear physics, atomic physics, radiobiology and material irradiation. The production of radioactive ion beams for nuclear physics studies represents the main part of the activity. Two complementary methods are used: the Isotope Separation On-Line (ISOL, the SPIRAL1 facility) and the In-Flight Separation techniques (IFS). SPIRAL1, the ISOL facilty, is running since 2001, producing and post-accelerating radioactive ion beams. The energy range available goes from 1.2 MeV/A to 25 MeV/A with a compact cyclotron (CIME, K=265). The running mode of this machine will be recalled as well as a review of the operation from 2001 to 2006. A point will be done on the past, present and future projects which allow to continue to develop the capacities of this equipment and to answer the new demands from the physicists, such as new beamlines for low or high energy experiments, new diagnotics of control or the adaptation of an identification system using Silicon, Germanium or plastic detectors in the requirements of the operation evironnement

ECR Ion sources for radioactive ion beam production

17th workshop on ECR Ion Sources and their Applications, Lanzhou, Chine (2006)International audienceECRIS's dedicated to radioactive ion producton must be as efficient as those used for production of stable elements, but in addition they are subject to more specific constraints such as radiation hardness, short atom-to-ion transformation time, beam purity and low cost. Up to now, different target/ion-source system (TISSs) have been designed, using singly-charged ECRISs, multi-charged ion sources or an association of singly-to-multi-charged ECRISs. The main goal, constraints and advantages of different existing ECR setups wil be compared before a more detailed description is given of the one designed for the SPIRAL II project and ist future improvements

MONOBOB II : Latest results of monocharged ions source for SPIRAL2 project

Original publication available at http://www.jacow.orgInternational audienceAmong the sources which can be installed in the radioactive ion production module of SPIRAL II, a singly-charged ECRIS has been chosen to produce ions from gaseous elements. Its characterization is under way on a test bench at GANIL. Extraction, transport and response time results are presented

Permanent magnets under irradiation and radiocative alkali ion beam development for SPIRAL1

International audienceUp to now, eighteen Target Ion Source Systems (TISSs) have been built and used for the production of radioactive ion beams on SPIRAL 1 facility, based on the Isotope- Separator-On-Line (ISOL) method. The TISSs are composed of thick carbon targets and of fully permanentmagnet Electron Cyclotron Resonance Ion Sources (ECRISs) of the Nanogan III type. After irradiation and a decay period of two years, the irradiated TISSs are dismounted and if their magnetic fields are still suitable, the ECRIS are used with a new target. Thereby thirty-two runs have been performed using new or renewed TISSs. , After irradiation, the measured magnetic field sometimes reveals magnet damage. Our experience is reported here. In the second section, we present the progress on the NanoNaKE setup, which aims to extend the radioactive ion beams in SPIRAL 1 to the alkali elements, by connecting a surface-ionization source to the Nanogan III ECRIS via a compact 1+ ion beam line. The main issues and difficulties are discussed and the preliminary solutions are described

Production of multi-charged phosphorus ions with ecris 'SUPERSHyPIE' at GANIL

The Ganil's Ion Production Group tested the source SUPERSHyPIE123 for theproduction of phosphorus n+ ion beams. The SUPERSHyPIE ecris is used for many testsof multi-charged ion production and supply ion beams for LIMBE4 (low energie beamline). This ion source works with a 14.5ghz RF power injected by a circular waveguide inthe axis of the sourc

Visible light spectrometry measurements for studying an ECRIS plasma and especially applied to the MONO1001 ion source

International audienceThe cylindrical geometry of the magnetic confinement of the MONO1001 ECR ion sourcemade in GANIL1, allows us to measure radial characteristics of the working ECR plasmawith Helium gas. The physical and the geometrical characteristics of the resonance surfaceinside the working ECR source have been quantified with the help of a visible lightspectrometer. Hence, we have deduced a shape of the ECRIS resonance surface whichcorresponds closely to our magnetic calculations

Recycling effect of germanium on ECR ion source

After running for three weeks with a 76Ge beam provided by the ECR-4 ion source at GANILwe have investigated the recycling effect of an SF6 plasma. The initial beam was produced bythe classical method, using germanium dioxide in our micro-oven and helium as support gas.The overall ionization efficiency was measured and found to be around 3%. Without theoven, and using SF6 instead of helium, the ECR-4 ion source has been able to produce a verystable beam during a two-week period. The intensity of 76Ge13+ (enrichment 88%) wasincreased to 40 eμA, and the overall ionization efficiency reached 40%.The oven method of production, the recycling effect and perspectives are described in thispaper