Qualification tests of materials for spallation neutron sources

Journal Article · Tue Dec 31 04:00:00 EST 1996 · Transactions of the American Nuclear Society

OSTI ID:426471

Sommer, W F ^[1]

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1. Los Alamos National Laboratory, NM (United States)

Several existing and planned facilities worldwide use protons in the 650- to 2000-MeV energy range to produce neutrons by spallation reactions. Research applications such as neutron scattering are pursued at the intense proton neutron source at Argonne National Laboratory, the ISIS facility at Rutherford-Appleton Laboratory, Los Alamos Neutron Science Center (LANSCE) at Los Alamos National Laboratory (LANL), Swiss Neutron Source at the Paul Scherrer Institute, and others. Operation of advanced spallation neutron sources will require high reliability and a 9 month/yr operating cycle. Materials that comprise the target and blanket structures will be exposed to high-energy proton fluences of 10{sup 25} to 10{sup 26}/m{sup 2}{center_dot}yr. Some components will also be exposed to a charged particle plus spallation neutron fluence of >10{sup 26}/m{sup 2{center_dot}}yr. The target, blanket, and moderator components are exposed to particle radiation with energy up to 1.3 GeV. Only a limited database is available for materials applications in this environment. Because of experience at accelerators such as at the Los Alamos Meson Physics Facility, now the LANSCE, phenomenological evidence indicating good material performance of a limited number of structural materials and target materials for adequate operating times is available. Determination of design data such as strength and ductility has been limited to very low dose experiments.

• OSTI ID: 426471
• Report Number(s): CONF-961103--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 75; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
43 PARTICLE ACCELERATORS
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
BREEDING
GEV RANGE 01-10
ION BEAM TARGETS
ISOTOPE PRODUCTION
MATERIALS TESTING
MEV RANGE 100-1000
NEUTRON SOURCE FACILITIES
PHYSICAL RADIATION EFFECTS
PROTON BEAMS
SPALLATION
TRITIUM