Fusion Product Measurements in D-T Plasmas in TFTR

Since the introduction of tritium into the Tokamak Fusion Test Reactor (TFTR) in December 1993, more than 400 D-T plasmas have been produced, with a total fusion energy of over 900 MJ. Fusion power production in D-T supershots is routinely in the 5–10 MW range, within a factor of ~ 200 of that expected in ITER. Neutron flux at the first wall of TFTR has reached about 10% of values projected for ITER, and central fusion power densities are already at ITER levels. Therefore, experience gained in fusion product measurements during the TFTR D-T experiments is directly relevant to the design of diagnostic systems for ITER.