Open Access
ND 2007
Article Number 321
Number of page(s) 4
Section Accelerator applications
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07660

Delayed neutrons measurement at the MEGAPIE target

S. Panebianco1, P. Bokov1, D. Doré1, X. Ledoux2, A. Letourneau1, A. Prévost1 and D. Ridikas1

1  CEA Saclay, DSM/DAPNIA/SPhN, 91191 Gif-sur-Yvette Cedex, France
2  CEA DIF, DAM/DPTA/SPN, 91680 Bruyères-le-Châtel, France

Published online: 21 May 2008

In the framework of the Neutronic and Nuclear Assessment Task Group of the MEGAPIE experiment we measured the delayed neutron (DN) flux at the top of the target. The measurement was proposed mainly for radioprotection purposes since the DN flux at the top of the target has been estimated to be of the same order of magnitude as the prompt neutron flux. Given the strong model-dependence of DN predictions, the measurement of DN contribution to the total neutron activity at the top of the target was thus desired. Moreover, this measurement is complementary to the DN experiments performed at PNPI (Gatchina) on solid lead and bismuth targets. The DN measurement at MEGAPIE was performed during the start-up phase of the target. In this paper we present a detailed description of the experimental setup and some preliminary results on decay spectra.

© CEA 2008