Current Status of Neutron-Scattering Research and Facilities in the United States (1984) / Chapter Skim
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4. OVERSEAS NEUTRON-SCATTERING FACILITIES RESEARCH REACTORS In this chapter we provide a selective review of foreign neutron-scattering facilities, concentrating on instrumentation developments that have not been matched in the United States.
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and flexibility of cold or thermal neutron instruments currently do not exist in the United States. On the other hand, 60 percent of the neutron-scattering instruments at the ILL (16)
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wave-vector fourcircle diffractometer membranes, surface slider D-17 Low-angle diffractometer Cold guide 4-10 Å/0.005-0.5 Å` 1 SANS and mediumresolution diffraction on macromolecules and biological systems D-20 Two-axis diffractometer with curved PSD Thermal beam 1-3 Å/0-7 Å` 1 High-sensitivity, rapid-powder, liquid and glass diffraction, real-time structure studies IN 1B Hot source three-axis spectrometer Hot-source beam 0.4-1.5 Å/30-400 meV High-energy excitations in molecular solids, magnetic materials, metal hydrides, etc. IN 14 Wide-range cold-neutron triple axis Cold guide 0-15 meV/0-4 Å` 1 Dynamics of structural phase transitions, critical scattering, etc.
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is also under construction at the KFA Research Reactor in Jülich. Finally, the Japanese government has approved funding for the complete modernization of the JAERI III reactor at a cost of ~$150 million, including a replacement of the vessel, an upgraded fuel and beam-tube arrangement, and installation of a large cold source and guide hall.
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of available thermal-neutron-beam intensities, and there are immediate opportunities to achieve a competitive status in advanced instrumentation for both cold and thermal neutron scattering, which will be outlined in Chapter 6. PULSED NEUTRON SOURCES The current U.S.
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dollars) that would slightly exceed the characteristics of the SNS.
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scientific costs of about $10 million/year.2 While this amounts to about 40 percent of the total U.S. neutron-scattering funding, it still does not, for example, allow full-time operation of the IPNS source.
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