Open AccessLCS/CINDER`90 accelerator tunnel activation calculations for the APT 1700-MeV accelerator tunnel
Author(s) -
J.D. Court,
E.C. Snow,
W.B. Wilson,
E. Pitcher
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/674721
Subject(s) - cinder , linear particle accelerator , beamline , nuclear physics , irradiation , particle accelerator , proton , neutron , nuclear engineering , neutron source , physics , materials science , chemistry , optics , engineering , coal , beam (structure) , organic chemistry
Calculations have been done to determine the amount of activation in the linac components and tunnel air for the Accelerator Production of Tritium 1700-MeV superconducting linac. Proton transport is accomplished through the use of the LAHET Code System. Particle production and depletion from proton and high-energy neutron reactions, calculated in LAHET, as well as low-energy neutron fluxes calculated by MCNP, are passed to the radionuclide production code CINDER`90 to determine the source terms at various times after irradiation. The upper limit on total air activation based on conservative assumptions, for the entire tunnel air volume, was found to be 4.77 Ci after a nine-month irradiation. This is reduced to 0.09 Ci after a 10-hour cooling off period. The total activation for the full 1-km of beamline components was found to be less than 4 kCi, with the half-lives of the highest contributors ranging from 12 years to 2 minutes. This beamline component activation calculation was done for an irradiation time of 40 years, which is the anticipated lifetime of the superconducting linac