Design study for a new spallation target of the n_TOF facility at CERNC. Carrapiço1, S. Andriamonje2, E. Berthoumieux2, I.F. Gonçalves1, F. Gunsing2, A. Mengoni3, P. Vaz1, V. Vlachoudis3 and the n_TOF collaboration4
1 Instituto Tecnológico e Nuclear(ITN), Lisbon, Portugal
2 CEA/Saclay - DSM/DAPNIA, Gif-sur-Yvette, France
3 CERN, Geneva, Switzerland
Published online: 21 May 2008
The n_TOF facility is a time of flight spectrometer dedicated to measuring neutron capture and fission cross sections. The neutron source consists on a lead target bombarded by a high energetic proton beam. After finishing a successful period of data taking by the end of 2004, it has been decided to upgrade the neutron spallation source with a cladded target. In this study, Monte Carlo simulations are reported for the assessment and comparison of the neutron and gamma fluxes from different target configurations. In addition, the plans for a second vertical measuring station with a flight path of 20 m above the spallation target have been considered in the simulations as well. Results for the energy deposition and the target heating are also presented.
© CEA 2008