Comparisons of Calculated and Measured Spectral Distributions of Neutrons from a 14-MeV Neutron Source inside the Tokamak Fusion Test Reactor

摘要

A recent paper presented neutron spectral distributions (energy greater than or equal to 0.91 MeV) measured at various locations around the Tokamak Fusion Test Reactor (TFTR) at the Princeton Plasma Physics Laboratory. The neutron source for the series of measurements was a small D-T generator placed at various positions in the TFTR vacuum chamber. In the present paper the results of neutron transport calculations are presented and compared with these experimental data. The calculations were carried out using Monte Carlo methods and a very detailed model of the TFTR and the TFTR test cell. The calculated and experimental fluences per unit energy are compared in absolute units and are found to be in substantial agreement for five different combinations of source and detector positions. (ERA citation 11:018800)