New sample environment projects and developments at the Australian Centre for Neutron Scattering

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dc.contributor.authorImperia, Pen_AU
dc.contributor.authorBooth, Nen_AU
dc.contributor.authorD'Adam, TMen_AU
dc.contributor.authorDavidson, Gen_AU
dc.contributor.authorLee, Sen_AU
dc.contributor.authorManning, AGen_AU
dc.date.accessioned2021-08-27T00:42:29Zen_AU
dc.date.available2021-08-27T00:42:29Zen_AU
dc.date.issued2017-07-12en_AU
dc.date.statistics2021-08-23en_AU
dc.description.abstractThe sample environment team at the Australian Centre for Neutron Scattering (ACNS) has been recently awarded funding for a new superconducting split-coil magnet, a fast closed cycle cryostat and a closed cycle dilution refrigerator of the latest generation. The new magnet design is of particular interest; the brief is complicated by the request to serve two separate classes of instruments: small angle scattering and time of flight. The magnet will have low fringe field, active shield design, and specific requirements for the asymmetric field gradient to allow experiments with polarised neutrons. Low fringe field values are combined with a minimum central field of 7 Tesla, wide “clean” scattering angle and dimensional and weight constraints. The design challenges and possible solutions will be detailed, together with a time frame for delivery and commissioning. The new compact closed cycle cryostat (1.5 K to 800 K) with a small He dump, aims to halve the system and sample cooling time, generating performances comparable to that of wet type “orange” cryostats without the necessity to refill with cryogenic liquids. The closed cycle dilution refrigerator will have high cooling power and large sample space, allowing new class of experiments with neutrons at ultra-low temperature. The most recent equipment built in-house and unique to the ACNS, such as the Peltier sample changer and the thermalised sample tumblers for SANS and USANS, will also be discussed.en_AU
dc.identifier.citationImperia, P., Booth, N., D'Adam, T. M., Davidson, G., Lee, S., & Manning, A. G. (2017). New sample environment projects and developments at the Australian Centre for Neutron Scattering. Paper presented at ICNS 2017 (International Conference on Neutron Scattering), Daejeon, South Korea, 9 to 13 July 2017. Retrieved from: http://www.icns2017.org/program.phpen_AU
dc.identifier.conferenceenddate13 July 2017en_AU
dc.identifier.conferencenameICNS 2017 (International Conference on Neutron Scattering)en_AU
dc.identifier.conferenceplaceDaejeon, South Koreaen_AU
dc.identifier.conferencestartdate9 July 2017en_AU
dc.identifier.urihttp://www.icns2017.org/program.phpen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11532en_AU
dc.language.isoenen_AU
dc.publisherInternational Conference on Neutron Scatteringen_AU
dc.subjectTime-of-flight spectrometersen_AU
dc.subjectOriented nucleien_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectSuperconducting magnetsen_AU
dc.subjectClosed-cycle cooling systemsen_AU
dc.subjectCryostatsen_AU
dc.titleNew sample environment projects and developments at the Australian Centre for Neutron Scatteringen_AU
dc.typeConference Abstracten_AU
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