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Abstract
Inelastic neutron scattering is a widely used technique to study phonon and magnon excitations in condensed matter and the triple axis spectrometer (TAS) is one of the main instruments used for such inelastic neutron scattering studies. As a consequence the TAIPAN TAS will be the first inelastic instrument at the new Australian research reactor OPAL. It will be located on a thermal neutron beam tube at the reactor shielding face and can be operated either in a high flux mode, with a double focusing monochromator and analyser, or in a traditional mode of operation with Soller collimators providing high resolution. A polarisation analysis capability will be realised on TAIPAN using supermirror benders.
Acknowledgements
The authors acknowledge the early design and conceptual work for the TAIPAN TAS carried out by Dr Leo Cussen. We have also greatly benefited from the freely given help and advice of Dr Trevor Finlayson, Monash University, Dr Jiri Kulda, ILL and Dr Lee Robertson, ORNL. At ANSTO the ongoing input from Peter Baxter, Frank Darmann, Nick Hauser and Eno Immamovic, and all of the members of the Neutron Beams Instrument Project is gratefully acknowledged. This development is fully funded by the Australian Federal Government. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the US Department of Energy under contract DE-AC05-00OR22725.