Helium production for 0.8–2.5 GeV proton induced spallation reactions, damage induced in metallic window materials

• Published in: Journal of nuclear materials 2001-07, Vol.296 (1), p.83-89
• Main Authors: Hilscher, D., Herbach, C.-M., Jahnke, U., Tishchenko, V., Enke, M., Filges, D., Goldenbaum, F., Neef, R.-D., Nünighoff, K., Paul, N., Schaal, H., Sterzenbach, G., Letourneau, A., Böhm, A., Galin, J., Lott, B., Péghaire, A., Pienkowski, L.
• Format: Article
• Language: English
• Subjects: Exact sciences and technology; Experimental methods and instrumentation for elementary-particle and nuclear physics; Neutron sources; Nuclear physics; Nuclear reactions: specific reactions; Nucleon-induced reactions; Particle sources and targets; Physics; Spallation reactions
• ISSN: 0022-3115; 1873-4820
• DOI: 10.1016/S0022-3115(01)00501-3

Production cross-sections for neutrons and charged particles as well as excitation energy distributions in spallation reactions were measured recently by the NESSI-collaboration and have been employed to test different intra nuclear cascade models and the subsequent evaporation. The INCL/GEMINI code, which describes best the experimental data has been employed to calculate the damage cross-sections in Fe and Ta as well as the He/dpa ratio as a function of proton energy. For the same amount of neutron production in a typical target of a spallation neutron source the proton beam induced radiation damage in an Fe window is shown to decrease almost linearly with proton energy. For heavier materials such as Ta a similar decrease of the radiation damage is found only for energies above about 3 GeV.