Lecesne N, Eleon C, Feierstein C, Gaubert G, Huguet Y, Jardin P, Lemagnen F, Leroy R, Pacquet J Y, Pellemoine F, Pichard A, Bajeat O, Essabaa S, Lau C, Launay F, Serani L, Demonchy C-E
GANIL, BP55027-14076, Caen Cedex 5, France.
Rev Sci Instrum. 2008 Feb;79(2 Pt 2):02A907. doi: 10.1063/1.2823895.
The SPIRAL2 project, currently under construction at GANIL, will include an isotope separator on line based facility for the production and acceleration of radioactive ion beams. A superconducting linear accelerator will accelerate 5 mA deuterons up to 40 MeV and 1 mA heavy ions up to 14.5 MeV/u. These primary beams will be used to bombard both thick and thin targets. We are investigating three different techniques to produce the radioactive ion beams: (1) the neutron induced fission of uranium carbide, (2) the direct interaction of deuterons in a uranium carbide target, and (3) the interaction of a heavy ion beam with a target. All these production systems will be coupled to an ion source. Four kinds of ion sources are foreseen for the ionization of the radioactive atoms: an electron cyclotron resonance ion source, a surface ionization ion source, a forced electron beam induced arc discharge ion source, and a laser ion source depending on the characteristics of the desired radioactive ion beam in terms of intensity, efficiency, purity, etc. A presentation of the SPIRAL2 project and of the different production systems is given.
目前正在法国国家重离子加速器实验室（GANIL）建设的SPIRAL2项目，将包括一个基于在线同位素分离器的放射性离子束生产与加速设施。一台超导直线加速器将把5毫安的氘核加速到40兆电子伏特，把1毫安的重离子加速到14.5兆电子伏特每核子。这些初级束流将用于轰击厚靶和薄靶。我们正在研究三种不同的生产放射性离子束的技术：（1）碳化铀的中子诱发裂变，（2）氘核在碳化铀靶中的直接相互作用，以及（3）重离子束与靶的相互作用。所有这些生产系统都将与一个离子源相连。根据所需放射性离子束在强度、效率、纯度等方面的特性，预计将有四种离子源用于放射性原子的电离：电子回旋共振离子源、表面电离离子源、强迫电子束诱导弧光放电离子源和激光离子源。本文介绍了SPIRAL2项目及不同的生产系统。
