Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9844926 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 9 Pages |
Abstract
The process of neutron leaking from a 14 MeV neutron source facility was analyzed by calculations and experiments. The experiments were performed at the Fusion Neutron Source (FNS) facility of the Japan Atomic Energy Institute, Tokai-mura, Japan, which has a port on the roof for skyshine experiments, and a 3He counter surrounded with a polyethylene moderator of different thicknesses was used to estimate the energy spectra and dose distributions. The 3He counter with a 3-cm-thick moderator was also used for dose measurements, and the doses evaluated by the counter counts and the calculated count-to-dose conversion factor agreed with the calculations to within â¼30%. The dose distribution was found to fit a simple analytical expression, D(r)=QDexp(-r/λD)r and the parameters QD and λD are discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
M. Wakisaka, J. Kaneko, F. Fujita, K. Ochiai, T. Nishitani, S. Yoshida, T. Sawamura,