SCANDAL- A facility for elastic neutron scattering studies in the 50-130 MeV range

A facility for detection of scattered neutrons, SCANDAL (Scattered Nucleon Detection Assembly), has recently been installed at the 20-180 MeV neutron beam facility of The Svedberg Laboratory (TSL) in Uppsala, Sweden. It is primarily intended for studies of elastic neutron scattering, but can be used for the (n,p) and (n,d) reactions as well. The energy interval for detected neutrons is 50-130 MeV, which makes the setup suitable for studies of transmutation-related cross sections. The experiment setup SCANDAL will be used to provide elastic neutron scattering data for transmutation applications. This will be done in an energy region which has been identified as very important for characterizing neutron transport in a spallation target, and in which there exist very little high-quality data. The magic or semi-magic nuclei 12C, 160, 40Ca, 90Zr and 208pb will be studied for developing theoretical models. As lead and zirconium are important materials in future transmutation facilities, modelling of neutron transport in these materials will also benefit directly from our measurements. There are plans to study H(n,n) for normalization purposes, and in a second phase other materials for transmutation cores might be investigated. First results, for 12C(n,n), show that we are able to separate the ground state and first excited states reasonably well in closed-shell nuclei