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 m2 position-sensitive 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.
Here we describe QUOKKA’s design characteristics, performance and operation, including a high count rate detector, installed in 2018.
[1] K. Wood et al, J. Appl. Cryst. 51 (2018) 294.
| Travel Funding | No |
|---|---|
| Level of Expertise | Experienced Researcher |
| Do yo wish to take part in the poster slam | No |
| Speakers Gender | Female |
