Preliminary Results of SPIRAL-2 Thermo Mechanical Neutron Converter characteristics
G. Acosta 1,2, J. Bermudez 1,2, A. Udup 1,3, L. Tecchio 1, L. Sajo-Bohus 2*
1 INFN, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
2 Nuclear Physics Laboratory, Universidad Simon Bolivar
3 Horia Hulubei National Institute of Physics and Engineering, Bucharest, Romania, University POLITEHNICA of Bucharest, Romania
SPIRAL 2 European facility 2,4 kg Uranium Carbide target characteristics is given. Neutrons, produced by bombarding a carbon converter with a 40 MeV deuteron beam, with 5 mA current for power up to 200 kW, induce fission reactions in target. Fragments (1014 fissions/s), are extracted, accelerated and transferred to the experimental areas. The neutron converter, a high speed rotating wheel, operates at the temperature range between 1850 - 2000 °C. Vacuum restrictions and material radiation degradation as well as a continous three month operation were considered in structural analysis employing the ANSYS software. Preliminary tests indicate that the assembly withstand operating conditions under a vacuum of 10-4mbar, temperature up to 300°C, lack of lubricant and a radiation dose rate around 105 Gy/h.
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