Harrault, F.

Paper	Title	Page
MOP73	Development of a Permanent Magnet ECR Source to Produce a 5 mA Deuteron Beam at CEA/Saclay	192
	R. Gobin, D.D. De Menezes, O. Delferriere, R. Ferdinand, F. Harrault CEA/DAPNIA-SACM, Gif-sur-Yvette Cedex P.-Y. Beauvais, G. Charruau, Y. Gauthier CEA/DSM/DAPNIA, Gif-sur-Yvette N. Comte CEA/Saclay, Gif-sur-Yvette P. Lehérissier, J.Y. Pacquet GANIL, Caen
	The high intensity light ion source, SILHI, is an ECR ion source operating at 2.45 GHz which produces high intensity (over 100 mA) proton or deuteron beams at 95 keV. It has been moved in the IPHI building after a complete dismantling. At the beginning of 2003, after tuning the source parameters at standard values, the first extracted beam reached more than 70 mA within a few minutes. This encouraged us to propose a permanent magnet source based on the SILHI design to fit in with the injector of the Spiral2 project, requesting 5 mA of D+ beam with an energy of 40 keV and a normalized rms emittance lower than 0.2 π·mm·mrad. The new source has been recently assembled and the first beam (proton) extracted. After a brief source description, the preliminary results will be reported and discussed.
MOP74	Recent Results of the 2.45 GHz ECR Source Producing H- Ions at CEA/Saclay	195
	R. Gobin, K. Benmeziane, O. Delferriere, R. Ferdinand, F. Harrault CEA/DAPNIA-SACM, Gif-sur-Yvette Cedex A. Girard CEA DSM Grenoble, Grenoble
	Low frequency ECR plasma sources have demonstrated their efficiency, reproducibility and long life time for the production of positive light ions. In 2003, the new 2.45 GHz ECR test stand based on a pure volume H- ion production, developed at CEA/Saclay, showed a dramatic increase of the H- extracted ion beam. In fact, a stainless steel grid now divides the plasma chamber in two different parts: the plasma generator zone and the negative ion production zone. By optimizing the grid position and its potential with respect to the plasma chamber, the negative ion current reached close to 1 mA. Ceramic plates, covering the plasma chamber walls help electron density and lead to an optimisation of the ion production. A 50 % improvement has been observed. A new 6 kW magnetron RF generator now replaces the 1.2 kW previous one and the current will be soon plotted versus the RF power. New Langmuir probe measurements are also expected on both sides of the grid. The last results will be reported and discussed.
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