Il y a maintenant 1000 tubes ³He individuels en position fixe qui couvrent la totalité de la surface du radar. L'instrument dispose en outre d'un multidétecteur aux petits-angles provenant de D11 [1]. A vérifier, il s'agissait d'une rosace.

Selon Herma Büttner et Don Kearley, ce fut temporaire car un autre multidétecteur provenant d'Italie fut installé [2,3]. C'était un multidétecteur BF₃ à fils croisés construit par le LETI dans les années 70.

Noticeably, in 1988, which is almost ten years before establishing the formal agreement [with Italy], a scientific collaboration started to expand the capability of the IN5 time-of-flight spectrometer over the small-angle scattering region, in order to access the neutron Brillouin regime. The project was based on the installation of a 2d LETI detector, formerly installed at the CAMEN reactor near Pisa. This detector bad been operated during the 1970s at a small-angle scattering facility belong­ing to the Centro Ricercbe FIAT. In 1986, the LETI detector was trans­ferred to the TRIGA reactor in Rome for rebuilding and testing as a small-angle detector for IN5. This activity, in a sense, gave origin to the BRISP project, which was ini­tially designed to be part of IN4 and then modified to become the first small-angle inelastic thermal neu­tron spectrometer. [2]

Réference
1- YellowBook (1988) p52-53.
2- C. Petrillo and F. Sacchetti (2008) Neutron News 19, 8-9.
3- YellowBook (1997) p47.