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Title: Radiation damage calculations for the APT materials test program

Abstract

A materials irradiation was performed at the Los Alamos Neutron Science Center (LANSCE) in the fall of 1996 and spring of 1997 in support of the Accelerator Production of Tritium (APT) program. Testing of the irradiated materials is underway. In the proposed APT design, materials in the target and blanket are to be exposed to protons and neutrons over a wide range of energies. The irradiation and testing program was undertaken to enlarge the very limited direct knowledge presently available of the effects of medium-energy protons ({approximately}1 GeV) on the properties of engineering materials. APT candidate materials were placed in or near the LANSCE accelerator 800-MeV, 1-mA proton beam and received roughly the same proton current density in the center of the beam as would be the case for the APT facility. As a result, the proton fluences achieved in the irradiation were expected to approach the APT prototypic full-power-year values. To predict accurately the performance of materials in APT, radiation damage parameters for the materials experiment must be determined. By modeling the experiment, calculations for atomic displacement, helium and hydrogen cross sections and for proton and neutron fluences were done for representative samples in the 17A, 18A, and 18Cmore » areas. The LAHET code system (LCS) was used to model the irradiation program, LAHET 2.82 within LCS transports protons > 1 MeV, and neutrons >20 MeV. A modified version of MCNP for use in LCS, HMCNP 4A, was employed to tally neutrons of energies <20 MeV.« less

Authors:
; ;  [1]; ;  [2]
  1. North Carolina State Univ., Raleigh, NC (United States)
  2. Los Alamos National Lab., NM (United States)
Publication Date:
OSTI Identifier:
678119
Report Number(s):
CONF-990605-
Journal ID: TANSAO; ISSN 0003-018X; TRN: 99:009104
Resource Type:
Journal Article
Journal Name:
Transactions of the American Nuclear Society
Additional Journal Information:
Journal Volume: 80; Conference: 1999 annual meeting of the American Nuclear Society (ANS), Boston, MA (United States), 6-10 Jun 1999; Other Information: PBD: 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; MATERIALS TESTING; TARGET CHAMBERS; ACCELERATORS; PROTONS; PHYSICAL RADIATION EFFECTS; INCONEL 718; STAINLESS STEEL-316L; STAINLESS STEEL-304L; STEEL-CR9MO; ALUMINIUM BASE ALLOYS; TUNGSTEN

Citation Formats

Corzine, R.K., Wechsler, M.S., Dudziak, D.J., Ferguson, P.D., and James, M.R. Radiation damage calculations for the APT materials test program. United States: N. p., 1999. Web.
Corzine, R.K., Wechsler, M.S., Dudziak, D.J., Ferguson, P.D., & James, M.R. Radiation damage calculations for the APT materials test program. United States.
Corzine, R.K., Wechsler, M.S., Dudziak, D.J., Ferguson, P.D., and James, M.R. Wed . "Radiation damage calculations for the APT materials test program". United States.
@article{osti_678119,
title = {Radiation damage calculations for the APT materials test program},
author = {Corzine, R.K. and Wechsler, M.S. and Dudziak, D.J. and Ferguson, P.D. and James, M.R.},
abstractNote = {A materials irradiation was performed at the Los Alamos Neutron Science Center (LANSCE) in the fall of 1996 and spring of 1997 in support of the Accelerator Production of Tritium (APT) program. Testing of the irradiated materials is underway. In the proposed APT design, materials in the target and blanket are to be exposed to protons and neutrons over a wide range of energies. The irradiation and testing program was undertaken to enlarge the very limited direct knowledge presently available of the effects of medium-energy protons ({approximately}1 GeV) on the properties of engineering materials. APT candidate materials were placed in or near the LANSCE accelerator 800-MeV, 1-mA proton beam and received roughly the same proton current density in the center of the beam as would be the case for the APT facility. As a result, the proton fluences achieved in the irradiation were expected to approach the APT prototypic full-power-year values. To predict accurately the performance of materials in APT, radiation damage parameters for the materials experiment must be determined. By modeling the experiment, calculations for atomic displacement, helium and hydrogen cross sections and for proton and neutron fluences were done for representative samples in the 17A, 18A, and 18C areas. The LAHET code system (LCS) was used to model the irradiation program, LAHET 2.82 within LCS transports protons > 1 MeV, and neutrons >20 MeV. A modified version of MCNP for use in LCS, HMCNP 4A, was employed to tally neutrons of energies <20 MeV.},
doi = {},
journal = {Transactions of the American Nuclear Society},
number = ,
volume = 80,
place = {United States},
year = {1999},
month = {9}
}