The emittance of the intense proton beam extracted by the source SILHI at Commisariat à l’Energie Atomique (CEA)-Saclay is a key parameter for the design of the IPHI Project RFQ. This parameter has a relevant role even for the design of an intense proton source for the TRASCO project of Istituto Nazionale di Fisica Nucleare (INFN). The tests performed in the framework of CEA-INFN collaboration have been mainly devoted to a 75 mA beam emittance investigation injecting different gases in the beam line. The results show that the rms normalized emittance decreases up to a factor 3 while the beam losses induced by recombination are contained within 5%. Normalized emittance in r-r′ plane of about 0.1 π min mrad have been obtained using Ar and Kr.

Efficiency and transient time studies of an electron cyclotron resonance ion source for radioactive ion beam production at ISAC/TRIUMF Rev. Sci. Instrum. 71, 946 (2000)Design of an electron cyclotron resonance ion source for the isotope separator and accelerator at TRIUMF Rev. Sci. Instrum. 71, 643 (2000)The high intensity light ion source ͑SILHI͒ is the electron cyclotron resonance ͑ECR͒ source constructed and tested at CEA-Saclay. The first aim is to produce up to 100 mA cw proton beams at 95 keV for the proton injection high intensity ͑IPHI͒ beams ͓5 MeV radio frequency quadrupole ͑RFQ͒ and 10 MeV drift tube linac ͑DTL͔͒. This prototype is developed by a CEA-CNRS-IN2P3 collaboration for applications such as accelerator driven systems for nuclear waste transmutation, production of radioactive ion beams or secondary particles. SILHI is also used to study the production of deuteron and H Ϫ beams for the International Fusion Material Irradiation Facility and European spallation source projects, respectively. The present status of SILHI and the experiments planned for the near future in both cw and pulsed modes are presented in this article. 80 mA cw proton beams are now currently produced at 95 keV with a high availability ͑ϳ1 spark/day͒. The proton fraction is around 90% and the typical r -rЈ rms normalized emittance after transport through a single solenoid low energy beam transport ͑LEBT͒ without beam losses is 0.3 mm mrad. The best beam characteristics are obtained when an ECR zone is created at the frontier between the plasma chamber and the rf ridged transition. Extensive emittance measurements performed with different gas injection in the LEBT have shown a factor of three emittance reduction. Space charge compensation measurements in cw mode will be undertaken with a four-grid analyzer to understand this behavior. Time resolved space charge compensation measurements in pulsed mode are also discussed. The highest total beam current of 120 mA ͑240 mA/cm 2 ͒ can be extracted with two ECR zones located at the plasma chamber extremities. Nevertheless a new electrode design must be done for this configuration to avoid excessive beam losses in the extraction system.

Measurements at 19 beam kinetic energies between 1795 and 2235 MeV are reported for the pp elastic scattering spin correlation parameter A 00nn ϭA NN ϭC NN . The c.m. angular range is typically 60-100°. The measurements were performed at Saturne II with a vertically polarized beam and target ͑transverse to the beam direction and scattering plane͒, a magnetic spectrometer and a recoil detector, both instrumented with multiwire proportional chambers, and beam polarimeters. These results are compared to previous data from Saturne II and elsewhere.