SPALLATION RADIATION DAMAGE AND DOSIMETRY FOR ACCELERATOR TRANSMUTATION OF WASTE APPLICATIONS

Monroe S. Wechsler, Philip D. Ferguson, C. Lin, Walter F. Sommer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Proposals are currently being made for systems to treat radioactive waste based on the use of accelerator-driven neutron sources. A linear proton accelerator with energies as high as 1600 MeV and currents up to 250 ma are anticipated for the driver. The neutron fluxes may reach up to 1020 neutrons/m2s as generated by the spallation reactions that occur when the protons strike target materials. Calculations are described to determine radiation fluxes and flux spectra inherent in such systems and to estimate likely radiation effects on system components. The calculations use LAHET, a Monte Carlo high-energy transport code, and MCNP, a generalized-geometry, coupled neutron-photon Monte Carlo transport code. Cross sections for displacement and helium production are presented for spallation neutrons of energies from 21 MeV to 1600 MeV for Inconel 718 (Ni plus 18.5, 18.5, 5.1, and 3 wt% of Cr, Fe, Nb, and Mo, respectively), an alloy that is used for the proton beam entry window in several accelerators. In addition, calculations for this alloy are presented for the primary knocked-on atom (PKA) spectrum and the transmutation yield for 1600 MeV incident neutrons.

Original languageEnglish
Title of host publicationReactor Dosimetry
EditorsHarry Farrar, E. Parvin Lippincott, John G. Williams, David W. Vehar
PublisherASTM International
Pages782-791
Number of pages10
ISBN (Electronic)9780803118997
DOIs
StatePublished - 1994
Externally publishedYes
Event8th ASTM-Euratom Symposium on Reactor Dosimetry - Vail, United States
Duration: Aug 29 1993Sep 3 1993

Publication series

NameASTM Special Technical Publication
VolumeSTP 1228
ISSN (Print)0066-0558

Conference

Conference8th ASTM-Euratom Symposium on Reactor Dosimetry
Country/TerritoryUnited States
CityVail
Period08/29/9309/3/93

Keywords

  • Inconel 718
  • LAHET, MCNP
  • PKA spectrum
  • accelerator transmutation of waste (ATW)
  • and transmutation production
  • displacement production
  • helium production
  • proton accelerator
  • radiation damage

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