SPIRAL2 Cooling panels and delay window design for the 50 kW and 200 kW neutron converter
A. Udup 1,2, J. Bermudez 1,3, G. Acosta 1,3, L. Tecchio 1, L. Sajo-Bohus 3*
1 INFN, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
2 Horia Hulubei National Institute of Physics and Engineering, Bucharest, Romania, University POLITEHNICA of Bucharest, Romania
3 Nuclear Physics Laboratory, Universidad Simon Bolivar
Results of thermo-mechanical simulation on the design of the cooling panels and delay window for the SPIRAL2 facility is given. Simulations were performed in order to determine the basic geometry, thermal distribution, deformation and stresses of the cooling panels and delay window induced by thermal radiation due to the graphite and UCx targets. The design of the neutron converter module has been conceived to house both the 50 kW or 200 kW system, depending on the user requirements. In practice, to switch from a power to another only the converter itself (graphite target) has to be changed, not the module. The neutron converter is conceived as a high speed rotating target, which operates within the temperature range of 1650 - 1850 °C. The thermal radiation produced by the graphite target it’s removed by two cooling panels and a delay window. This is an assembly of cooling panels located between the neutron converter and the UCx target. Its main function is to provide thermal protection to the UCx target being positioned directly behind the neutron converter on the axis of the deuteron beam. Has another important funtion of protection in the case of an eventual failure of the neutron converter, the direct deuteron beam is stopped. Description of the simulation and parameters relevant to this project is included.