Workshop on Safety at Radioactive Ion Beam facilities

Workshop on Radiation Protection Issues related to Radioactive Ion Beam Facilities

Organized by CERN, Geneva - ISOLDE, Ludwig Maximilian University, Munich - MAFF, EURISOL - Target and ion source working group

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ABSTRACT

Induced radioactivity in the target station and decay tunnel from a 4 MW proton beam

S. Agosteo (1), M. Magistris (1,2), T. Otto (2) and M. Silari (2)
(1) Politecnico di Milano, CESNEF, Via Ponzio 34/3, 20133 Milano, Italy
(2) CERN, 1211 Geneva 23, Switzerland

An important aspect of a future CERN Neutrino Factory is the material activation arising from a 2.2 GeV, 4 MW proton beam striking a mercury target. A first estimation of the hadronic inelastic interactions and the production of residual nuclei in the target, the magnetic horn, the decay tunnel, the surrounding rock and a downstream dump has been performed by the Monte Carlo hadronic cascade code FLUKA. The aim is both to assess the dose equivalent rate to be expected during mantainance work and to evaluate the amount of residual radioactivity which will have to be disposed of after the facility has ceased operation. The first results of such calculations will be presented.