A new high efficiency array of C6D6 detectors for capture cross section measurements at GELINAC. Sage1, E. Berthoumieux2, O. Bouland3, F. Gunsing2, A.J.M. Plompen1, P. Schillebeeckx1, P. Siegler1, N. van Opstal4 and R. Wynants1
1 JRC, IRMM, Neutron Physics Unit, 2440 Geel, Belgium
2 CEA Saclay, DSM/DAPNIA/SPhN, 91191 Gif-sur-Yvette, France
3 CEA Cadarache, DEN/CAD/DER/SPRC/LEPh, 13108 Saint-Paul-lez-Durance, France
4 XIOS, Hogeschool Limburg, 3590 Diepenbeek, Belgium
Published online: 21 May 2008
Neutron capture cross section measurements at the Geel Electron Linear Accelerator (GELINA) rely on the use of H-free deuterated benzene C6D6 liquid scintillators. A new design of Aluminium canned C6D6 detectors was studied to improve the performances (high gamma efficiency vs. low neutron sensitivity) of the cylindrical previous ones: on the basis of a truncated 5-sides pyramid, the new detectors were developed and tested in Geel, and used in a preliminary capture cross section measurement on 197Au in a 4 detectors setup.
© CEA 2008