1. QUOKKA, the pinhole small-angle neutron scattering instrument at the OPAL Research Reactor, Australia: design, performance, operation and scientific highlights
- Author
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David Federici, Shane J. Kennedy, Eno Imamovic, Friedl Bartsch, Robert A. Robinson, Christopher J. Garvey, Elliot P. Gilbert, Sungjoong Kim, Douglas Clowes, William A. Hamilton, John C. Osborn, Michael Deura, Peter Baxter, Terry Noakes, David Penny, Tony Lam, Nick Hauser, Kathleen Wood, Merv Perry, Chun-Ming Wu, Peter Abbeywick, Wai Tung Lee, Paolo Imperia, Jamie C. Schulz, Frank Darmann, Warren Brown, Norman Booth, Shane Harrison, Glen Horton, Stewart A Pullen, Norman Xiong, David Mannicke, Mark Lesha, Martin Jones, Jitendra P. Mata, Daniel Bartlett, Philip Hanson, Timothy D’Adam, Jason Christoforidis, Ferdi Franceschini, and Scott Olsen
- Subjects
Neutron-velocity selector ,Computer science ,business.industry ,Detector ,Context (language use) ,02 engineering and technology ,Neutron scattering ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,General Biochemistry, Genetics and Molecular Biology ,0104 chemical sciences ,law.invention ,Lens (optics) ,law ,Neutron ,Pinhole (optics) ,Research reactor ,Aerospace engineering ,0210 nano-technology ,business - Abstract
QUOKKA is a 40 m pinhole small-angle neutron scattering instrument in routine user operation at the OPAL research reactor at the Australian Nuclear Science and Technology Organisation. Operating with a neutron velocity selector enabling variable wavelength, QUOKKA has an adjustable collimation system providing source–sample distances of up to 20 m. Following the large-area sample position, a two-dimensional 1 m2 position-sensitive detector measures neutrons scattered from the sample over a secondary flight path of up to 20 m. Also offering incident beam polarization and analysis capability as well as lens focusing optics, QUOKKA has been designed as a general purpose SANS instrument to conduct research across a broad range of scientific disciplines, from structural biology to magnetism. As it has recently generated its first 100 publications through serving the needs of the domestic and international user communities, it is timely to detail a description of its as-built design, performance and operation as well as its scientific highlights. Scientific examples presented here reflect the Australian context, as do the industrial applications, many combined with innovative and unique sample environments.
- Published
- 2018
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