Postirradiation investigations at Forschungszentrum Juelich

Journal Article · Tue Sep 01 04:00:00 EDT 1998 · Transactions of the American Nuclear Society

OSTI ID:644298

Carsughi, F ^[1]; Sommer, W ^[2]

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1. Forschungszentrum Juelich (Germany). Inst. fuer Festkoerperforschung
2. Los Alamos National Lab., NM (United States)

Materials performance at high-power spallation neutron sources is a major consideration worldwide during this period of time when designs for several new facilities are being developed. Realizing the need for materials radiation effects data from exposure to prototypical environments, studies at the Los Alamos Neutron Science Center (LANSCE), Los Alamos National Laboratory, and the spallation neutron source (SINQ) at the Paul Scherrer Institut (PSI), Villigen, Switzerland, have been initiated. A number of candidate materials are considered, and post-irradiation investigations should give definite answers to the engineers engaged in the design of the future accelerator-based facilities. Before the data from these irradiations become available, components irradiated in operating medium-power spallation facilities are at present the only source of direct information on the behavior of materials in a spallation environment. Within an international collaboration, the following components were shipped to the hot cells of the Forschungszentrum Juelich: (1) a hemispherical window operated at LANSCE made of Inconel 718; (2) a spherical water degrader made of Inconel 718 and Type 304L stainless steel used for the neutrino production in the target area of LANSCE; (3) two curved PSI windows made of DIN 1.4926 stainless steel and irradiated in LANSCE; and (4) a complete target from ISIS at Rutherford Appleton Laboratory in England consisting of Ta plates in a Type 304 stainless steel housing, used to produce neutrons for the experimental program from 1988 to 1996. Because of the urgent need to have mechanical properties information after proton irradiation of Inconel 718, the priority of the investigation was given to the outer shell of the water degrader. The water degrader was irradiated with 800-MeV protons to a maximum damage level in the center of the proton beam of {approximately}10 displacements per atom.

• OSTI ID: 644298
• Report Number(s): CONF-980606--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 78; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
36 MATERIALS SCIENCE
43 PARTICLE ACCELERATORS
ACCELERATOR FACILITIES
NEUTRON SOURCES
PHYSICAL RADIATION EFFECTS
POST-IRRADIATION EXAMINATION
PROTON BEAMS
TARGETS