Browsing by Author "Christoforidis, J"

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    Modular in-situ reaction chamber design for time resolved diffraction
    (Oldenbourg Verlag, 2009-09) Styles, MJ; Riley, DP; Christoforidis, J; Olsen, SR
    In an effort to mitigate the expense and uncertain performance of customised environment chambers, researchers at the University of Melbourne and the Australian Nuclear Science and Technology Organisation (ANSTO) have designed and are currently constructing a modular reaction chamber, capable of separating the necessities of diffraction methodologies from those of the desired sample environment. The In-Situ Reaction Chamber (ISRC) abstracts many of the details intrinsic to the diffractometer, allowing users to design inexpensive environmental inserts that may be readily customised to their individual needs. Overall, the modularised design aims to reduce the development costs of performing in-situ diffraction experiments, while minimising the experimental setup time and overall uncertainty of ancillary performance. © 2009, Oldenbourg Verlag
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    Quokka: the small-angle neutron scattering instrument at OPAL
    (Australian Institute of Physics, 2006-12-05) Noakes, TJ; Christoforidis, J; Schulz, JC; Hamilton, WA; Gilbert, EP
    A small-angle neutron scattering (SANS) instrument[1] is being designed as part of the initial instrument suite for the new 20-MW Australian Reactor, OPAL. This instrument is designed to study structure on 1-100nm length scales on the wide variety of materials of scientific and technological importance for which neutron scattering has some considerable advantages over its x-ray counterpart, in particular (i) systems for which isotopic (H/D) contrast may be employed to highlight ordering, such as self-assembled polymer, surfactant and bio-molecule mesophases, and (ii) systems which scatter the neutron due to its magnetic moment, such as flux line penetration arrays in type II superconductors. The OPAL SANS instrument, receiving neutrons from a large liquid-D2 cold source, will be in the spirit of the world’s best facilities and will greatly build upon the Australian Nuclear Science and Technology Organisation’s existing expertise and facilities. Scheduled to begin operation in 2007, it will provide Australian and international researchers with opportunities to access state-of-the-art SANS instrumentation. [1] E.P. Gilbert, J.C. Schulz and Terry J. Noakes, Physica B, (2006) in press
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    Quokka: the small-angle neutron scattering instrument at OPAL
    (The Bragg Institute, Australian Nuclear Science and Technology Organisation, 2005-11-27) Gilbert, EP; Noakes, TJ; Schulz, JC; Baxter, P; Darmann, F; Hauser, N; Abbeywick, P; Brûlé, A; Imamovic, E; Christoforidis, J
    A small-angle neutron scattering (SANS) instrument is being designed as part of the initial instrument suite for the 20-MW OPAL Reactor. The new instrument, receiving neutrons from a large liquid-D2 cold source, will be in the spirit of the worlds best facilities and will greatly build upon the Australian Nuclear Science and Technology Organisations existing expertise and facilities. Scheduled for completion in July 2006, it will provide Australian and international researchers with opportunities to access state-of-the-art SANS instrumentation. The details of the new SANS will be presented. © The Authors
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    SPATZ: The second time-of-flight neutron reflectometer at the OPAL Research Reactor
    (International Conference on Neutron Scattering, 2017-07-12) Le Brun, AP; Pullen, SA; Constantine, P; Spedding, J; Roach, D; McGregor, A; Affleck, J; Christoforidis, J
    In September 2015, an agreement was signed between HZB and ANSTO to transfer the V18 ‘BioRef’ time-of-flight neutron reflectometer [1, 2], which was situated at the BER-II Research Reactor, to the OPAL Research Reactor. In September 2016 a joint team of ANSTO and HZB personnel spent four weeks carefully disassembling BioRef and packing it into shipping containers for transport to ANSTO. The instrument safely arrived in Sydney in February 2017 [3], and will be known as SPATZ (German for Sparrow). SPATZ will be the 15th neutron-scattering instrument at OPAL. SPATZ has a vertical sample geometry, which complements the current reflectometer, PLATYPUS, which has a horizontal sample geometry. The vertical sample geometry will allow for use of sample environments which cannot be currently used on PLATYPUS due to geometry constraints and allows for wide-angle diffraction from multilayers and lamellarstacks. SPATZ will continue to be equipped for simultaneous infra-red spectroscopy and reflectometry experiments, and will come with equipment for upgrades for polarisation and spin-echo techniques. The instrument will view the OPAL cold neutron source (CNS) by taking the end position of the CG2B guide. Currently, the CG2B guide is installed between the primary and secondary shutters and part of the project scope is to complete the installation of the CG2B guide beyond the secondary shutter into the Neutron Guide Hall. The CG2B guide will accommodate SPATZ and an additional upstream instrument to be determined in the future. This presentation will provide an overview of the project, its current status, and future direction.
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    SPATZ: The second time-of-flight neutron reflectometer at the OPAL Research Reactor
    (Australian Institute of Nuclear Science and Engineering, 2016-11-29) Le Brun, AP; Pullen, SA; Constantine, P; Spedding, J; Roach, D; McGregor, A; Affleck, J; Christoforidis, J; Trapp, M; Steitz, R
    In September 2015, an agreement was signed between HZB and ANSTO to transfer the V18 ‘BioRef’ time-of-flight neutron reflectometer [1], currently situated at the 10 MW BER-II Research Reactor, to the OPAL Research Reactor. During 2016 preparations have been made to carry out the transfer of a neutron-scattering instrument halfway around the globe. This has involved a joint team of ANSTO and HZB personnel spending four weeks carefully disassembling BioRef and packing it into shipping containers for transport to ANSTO. Once the instrument arrives it will be known as SPATZ (German for Sparrow) and will be the 15th neutron-scattering instrument at OPAL. SPATZ has a vertical sample geometry, which complements the current reflectometer, PLATYPUS, which has a horizontal sample geometry. The vertical sample geometry will allow for use of sample environments which cannot be currently used on PLATYPUS due to geometry constraints and allows for wide-angle diffraction from multilayers and lamellar stacks. SPATZ will also be equipped for simultaneous infra-red spectroscopy and reflectometry experiments, and will come with equipment for upgrades for polarisation and spin-echo techniques. The instrument will view the OPAL cold neutron source (CNS) by taking the end position of the CG2B guide. Currently, the CG2B guide is installed between the primary and secondary shutters and part of the project scope is to complete the installation of the CG2B guide beyond the secondary shutter into the Neutron Guide Hall. The CG2B guide will accommodate SPATZ and an additional upstream instrument to be determined in the future. This presentation will provide an overview of the project, its current status, and future direction. Feedback from the neutron scattering community is encouraged.