Characterization of JET Neutron Field for Material Activation and Radiation Damage Studies
A new Deuterium-Tritium campaign (DTE2) is planned at JET in 2017 with a proposed neutron budget, corresponding to the neutron fluence on the first wall of JET of up to about 1020n/m2. This will offer the opportunity to irradiate samples of functional materials used in ITER to assess the degradation of the physical properties and the neutron induced activities, respectively. The present work is aimed at the characterization of the neutron field inside the JET device during DT plasma operations in preparation of the planned experiments. Several possible irradiation positions are studied and characterized with their appropriateness for irradiation and activation studies during the DT campaign. The neutron spectra are studied and the total neutron fluence at the specified positions is calculated.