The Spes Direct Target Project at the Laboratori Nazionali DI Legnaro (original) (raw)

2008

Abstract

The SPES Direct Target Project at the Laboratori Nazionali di Legnaro (Italy), is devoted to the construction of a Radioactive Ion Beam (RIB) Facility within the framework of the new European RIB panorama. The SPES Project aims for the production of neutron-rich unstable nuclei by the fission of natural Uranium target induced by a primary proton beam of 40 MeV, 200 μA directly impinging on a multi-sliced Uranium Carbide (UCx) target. The idea is an evolution of the existing HRIBF facility at Oak Ridge National Laboratory (USA) where a proton primary beam of 40 MeV is also used. The goal is to reach a high number of fission products (up to 1013 fission/s) still keeping a relatively low power deposition inside the target. The description of the whole facility, together with the details on the Direct Target configuration, will be illustrated. Thermo-mechanical calculations, pellets preparation and characterization, effusion-diffusion model predictions for the estimation of the release fraction of different radioactive nuclides will be discussed. A scaled (1:5) prototype of the Target system has been built and tested recently at HRIBF.

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