LCS/CINDER`90 accelerator tunnel activation calculations for the APT 1700-MeV accelerator tunnel

Technical Report · Tue Sep 01 04:00:00 EDT 1998

DOI:https://doi.org/10.2172/674721· OSTI ID:674721

Court, J D; Snow, E C; Wilson, W B; Pitcher, E R

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.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Management and Administration, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 674721
• Report Number(s): LA-UR--98-1182; CONF-980403--; ON: DE98006311
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
43 PARTICLE ACCELERATORS
CHARGED-PARTICLE TRANSPORT
COMPUTERIZED SIMULATION
ENVIRONMENTAL IMPACTS
LINEAR ACCELERATORS
OCCUPATIONAL SAFETY
RADIOACTIVITY
SOURCE TERMS
THEORETICAL DATA
TUNNELS