Garcia, M. and Ogando Serrano, Francisco and Ortego, P. and Arroyo, J.M. and Brañas, B. and Töre, C. and Lopez Gonzalez de Murillo, Daniel and Sauvan, Patrick and Mayoral, Alicia and Sanz Gonzalo, Javier
Optimized design of local shielding for the IFMIF/EVEDA beam dump.
In: "Shielding Aspects of Accelerators, Targets and Irradiation Facilities - SATIF 10", 06/10/2010 - 08/10/2010, Ginebra, Suiza. ISBN 9789264034679.
This paper describes the local shielding design process of the IFMIF/EVEDA Beam Dump and the most relevant results obtained from the simulations. Different geometries and materials have been considered, and the design has been optimized taking into account the origin of the doses, the effect of the walls of the accelerator vault and the space restrictions. The initial idea was to shield the beam stopper with a large water tank of easy transport and dismantling but it was shown to be insufficient to satisfy the dose limit requirements, basically due to photon dose, and hence a denser shield combining hydrogenous and heavy materials was preferred. It will be shown that, with this new shielding, dose rate outside the accelerator vault during operation comply with the legal limits and unrestricted maintenance operations inside most of the vault are possible after a reasonable cooling time after shutdown.