Single-crystal diamond detector measurements of deuterium-deuterium neutrons at the new NILE facility.

Paoletti M., Cazzaniga C., Rigamonti D., Ngo K., Perelli Cippo E., Tardocchi M.
  Martedì 13/09   09:00 - 13:30   Aula L - Christa Mc Auliffe   VI - Fisica applicata, acceleratori e beni culturali   Presentazione
A single-crystal diamond detector (SDD) has been used for the characterization of a DD compact neutron generator of the new NILE facility of the Rutherford Appleton Laboratory (UK), where two compact DD and DT sources are being installed to produce $2.5 {MeV}$ and $14 {MeV}$ neutrons for chip irradiation experiments. In recent years SDDs have been successfully used for neutron measurements in the MeV range including high-resolution spectroscopy. At NILE the SDD has been irradiated with $2.5 {MeV}$ neutrons at different angles in order to study the neutron energy as a function of the emission angle. The measured data are here compared to the expected theoretical curves to characterise the generator and determine the amount of primary and scattered neutrons. Further measurements have been conducted placing the SDD at different angles around the generator axis in order to find the best position (in terms of amount of scattered neutrons) for chip irradiation. The performances of the SDD had been previously evaluated through a benchmark experiment realized with both $2.5 {MeV}$ and $14 {MeV}$ at the PTB Metrology Institute (D) in collaboration with CNR-ISTP, Università di Milano-Bicocca and RAL.