A new type of neutral injector based on the production of D- by double electron capture

The aim of the present paper is to introduce the Swedish French Project and to explain its philosophy and expectations. We compare it to other injectors of the same family and underline the conceptual differences. Let us recall that the D- ions are obtained through the following reactions: [D2+ or D+ or D0] + [Cs or Na] → D-. The best rates are achieved with Cesium (approximately 30%) and incident ions of < 1 keV, but it is difficult to create convenient beams at such low energies. Therefore, sodium cells exhibing less efficiency (approximately 18%) are also utilized, because these rates are achieved with incident particle beams of 10 - 20 keV