Recent enhancements and performance gains from upgrades to ANSTO's thermal neutron instrument TAIPAN and the triple-axis and Be-filter spectrometers

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dc.contributor.authorRule, KCen_AU
dc.contributor.authorOgrin, Aen_AU
dc.contributor.authorBerry, Aen_AU
dc.contributor.authorStampfl, APJen_AU
dc.contributor.authorBartlett, Den_AU
dc.contributor.authorFranceschini, Fen_AU
dc.contributor.authorDarmann, FAen_AU
dc.contributor.authorOlsen, SRen_AU
dc.contributor.authorDanilkin, SAen_AU
dc.contributor.authorPangelis, Sen_AU
dc.contributor.authorOste, Ten_AU
dc.contributor.authorErsez, Ten_AU
dc.date.accessioned2025-04-23T04:01:24Zen_AU
dc.date.available2025-04-23T04:01:24Zen_AU
dc.date.issued2017-11-28en_AU
dc.date.statistics2025-04-17en_AU
dc.description.abstractTAIPAN is the thermal-neutron spectrometer located at the reactor face of Australia's OPAL reactor (ANSTO). TAIPAN hosts two interchangeable secondary instruments; the triple-axis spectrometer (TAS) and the beryllium filter spectrometer. The TAS option has been operating since 2010 whilst the Be-filter only began operating in 2015. TAIPAN is renowned for its versatility and high neutron flux which has allowed the TAS to measure a broad range of samples including single crystals, powders, thin films, and co-aligned multi-crystal arrays. While the TAS option is used mostly to study structural and magnetic excitations in materials, the Be-filter option is used to measure vibrational density of states from powder samples. TAIPAN has recently undergone some upgrades to improve the accessible momentum and energy range of both the TAS and the Be-filter spectrometers. Four key features have been modified to improve performance: the accessible momentum transfer has been increased by re-designing the enclosure; a sapphire-filter translation-stage mechanism has been installed to allow epithermal neutrons to pass to the monochromators; a new Cu-200 double-focussing monochromator has been installed to allow monochromatic scattering of neutrons up to 180 meV; and finally a new tertiary shutter and snout have been designed to improve the signal-to-noise ratio and reduced background outside the instrument enclosure. Extensive testing and alignment of all new motion stages were undertaken with reproducibility within ±0.05degrees or ±0.25mm obtained for both the monochromator rotation angle & sapphire-filter alignment. © The Authors.en_AU
dc.identifier.booktitle6th Design and Engineering of Neutron Instruments Meeting 2017, DENIM VI, 28 November-1 December 2017, Sydney Australia, program and abstracten_AU
dc.identifier.citationRule, K., Ogrin, A., Berry, A., Stanpfl, A., Bartlett, D., Franceschini, F., Darmann, F., Olsen, S., Danilkin, S., Pangelis, S., Oste, T., & Ersez, T. (2017). Recent enhancements and performance gains from upgrades to ANSTO's thermal neutron instrument TAIPAN and the triple-axis and Be-filter spectrometers, Presentation to the 6th Design and Engineering of Neutron Instruments Meeting 2017, DENIM VI, 28 November-1 December 2017, Sydney Australia, program and abstract, (pp. 17). Lucas Heights, New South Wales : Australian Nuclear Science and Technology Organisation.en_AU
dc.identifier.conferenceenddate2017-12-01en_AU
dc.identifier.conferencename6th Design and Engineering of Neutron Instruments Meeting 2017en_AU
dc.identifier.conferenceplaceSydneyen_AU
dc.identifier.conferencestartdate2017-11-28en_AU
dc.identifier.pagination17en_AU
dc.identifier.placeofpublicationLucas Height, New South Walesen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16154en_AU
dc.language.isoenen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectANSTOen_AU
dc.subjectAustraliaen_AU
dc.subjectCopperen_AU
dc.subjectFiltersen_AU
dc.subjectMeasuring instrumentsen_AU
dc.subjectModificationsen_AU
dc.subjectMonochromatorsen_AU
dc.subjectNeutron spectrometersen_AU
dc.subjectOPAL Reactoren_AU
dc.subjectPerformanceen_AU
dc.subjectSapphireen_AU
dc.subjectThermal reactorsen_AU
dc.titleRecent enhancements and performance gains from upgrades to ANSTO's thermal neutron instrument TAIPAN and the triple-axis and Be-filter spectrometersen_AU
dc.typeConference Presentationen_AU
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