Speaker
Description
Quokka was the first SANS instrument to be in operation at the Australian research reactor, OPAL [1]. It is a 40 m pinhole instrument operating with a neutron velocity selector, an adjustable collimation system providing source-sample distances of up to 20 m and a two dimensional 1 m squared position-sensitive state-of-the-art detector, capable of measuring 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 with a large sample area, capable of accommodating a variety of sample environments. Some of these sample environments are, a Rapid Heat Quench Cell enabling a sample to be studied in situ following a thermal shock (-120°C to 220°C); The neutron Rapid Visco Analyser (nRVA) which enables SANS to be measured simultaneously with viscosity via an RVA – an instrument widely used within the food industry; In-situ Differential Scanning Calorimetry (DSC); A stopped flow cell, and RheoSANS.
In early 2021 Quokka achieved the milestone of 200 peer-reviewed publications in a variety of research fields. Here we cover some of the research highlights along with Quokka’s performance and operation.
[1] K. Wood, J. P. Mata, C. J. Garvey, C. M. Wu, W. A. Hamilton,[..]and E. P. Gilbert, QUOKKA, the pinhole small-angle neutron scattering instrument at the OPAL Research Reactor, Australia: design, performance, operation and scientific highlights, J Appl Crystallogr, 2018, 51, 294-314.
| Condition of submission | Yes |
|---|---|
| Which facility did you use for your research | Australian Centre for Neutron Scattering |
| Presenter Gender | Woman |
| Pronouns | She/Her |
| Level of Expertise | Experienced Researcher |
