DESIGN of a TARGET and MODERATOR at the LOS ALAMOS SPALLATION RADIATION EFFECTS FACILITY (LASREF) as a NEUTRON SOURCE for FUSION REACTOR MATERIALS DEVELOPMENT

Abstract

The LASREF facility is located in the beam stop area at LAMPF. The neutron spectrum is fission-like with the addition of a 3% to 5% component with E > 20 MeV. The present study evaluates the limits on geometry and material selection that will maximize the neutron flux. MCNP and LAHET were used to predict the neutron flux and energy spectru/n for a variety of geometries. The problem considers 760 MeV protons incident on tungsten. The resulting neutrons are multiplied in uranium through (n,xn) reactions. Calculations show that a neutron flux greater than 1019n/m2/s is achievable. The helium to dpa ratio and the transmutation product generation are calculated. These results are compared to expectations for the proposed DEMO fusion reactor and to FFTF.

Department(s)

Nuclear Engineering and Radiation Science

Keywords and Phrases

fusion; irradiation facility; LAMPF; LASREF; Monte Carlo

International Standard Book Number (ISBN)

978-080311899-7

International Standard Serial Number (ISSN)

0066-0558

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Society of Mechanical Engineers, All rights reserved.

Publication Date

01 Jan 1994

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