Preliminary earth berm shielding calculations for the accelerator production of tritium 1700-MeV accelerator

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The authors have performed calculations using the LAHET Code System (LCS) to obtain an estimation of the amount of earth berm shielding that will be required for the 1700-MeV proton accelerator proposed for the Accelerator Production of Tritium (APT) Project. A source scenario of 10 nA/m beam loss along the beam line was used to calculate the dose values above a 6-m earth berm from high-energy neutrons, low-energy neutrons, and photons. LAHET, a Monte Carlo based particle transport code, was used to transport a 1700-MeV protons from the beam along a divergence path of 1{degree} from the original beam direction ... continued below

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6 p.

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Court, J.D.; Pitcher, E.J.; Ferguson, P.D.; Russell, G.J. & Patton, B.W. July 1, 1998.

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Description

The authors have performed calculations using the LAHET Code System (LCS) to obtain an estimation of the amount of earth berm shielding that will be required for the 1700-MeV proton accelerator proposed for the Accelerator Production of Tritium (APT) Project. A source scenario of 10 nA/m beam loss along the beam line was used to calculate the dose values above a 6-m earth berm from high-energy neutrons, low-energy neutrons, and photons. LAHET, a Monte Carlo based particle transport code, was used to transport a 1700-MeV protons from the beam along a divergence path of 1{degree} from the original beam direction and impacting representative beampipe material along a 300-m beamline. LAHET was then used to track all high-energy neutron production until the neutrons either escape the berm shield, or scatter down in energy to 20 MeV, where their parameters were then written to a source file for MCNP. Photon production data was also written to a source file used by MCNP. MCNP transported all neutrons and photons from the LAHET source file until they (1) were absorbed, scattered down to an energy cutoff, or (2) escaped from the system. Doses were calculated from surface flux tallies obtained from LAHET and MCNP. These doses were then compared to earlier Moyer model calculations.

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6 p.

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INIS; OSTI as DE98003476

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  • 1997 American Nuclear Society (ANS) winter meeting, Albuquerque, NM (United States), 16-20 Nov 1997

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  • Other: DE98003476
  • Report No.: LA-UR--98-257
  • Report No.: CONF-971125--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 663208
  • Archival Resource Key: ark:/67531/metadc708573

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  • July 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 26, 2016, 3:27 p.m.

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Court, J.D.; Pitcher, E.J.; Ferguson, P.D.; Russell, G.J. & Patton, B.W. Preliminary earth berm shielding calculations for the accelerator production of tritium 1700-MeV accelerator, article, July 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc708573/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.