ANSTO's research capabilities, led by the OPAL nuclear research reactor and associated instruments provide access to users investigating areas as diverse as materials, life sciences, climate change and mining/engineering.
Joey Neutron Laue Camera for Single - Crystal Alignment
Instrument Scientists Frank Klose |  |
| Layout of the Joey Neutron Laue Camera |
More information on Joey
JOEY is a Laue-diffraction neutron alignment camera. Its purpose is to aid scientists in the characterisation and alignment of single crystals prior to an experiment on one of the Bragg Institute's high-flux instruments, such as the 3-axis instruments TAIPAN and SIKA, the single-crystal diffraction instrument KOALA, and the diffractometers WOMBAT and ECHIDNA.
The ability to align single crystals quickly, and to test for sample quality prior to a scheduled experiment, helps scientists optimise their beamtime and improve the quality of their results.
JOEY utilises a flat neutron scintillator in conjunction with wide-area CCD cameras to detect backscattered neutrons. A white beam of neutrons passes through the centre of the detector, which scatters off the single-crystal sample and is detected by the scintillator screen.
A Laue diffraction pattern is measured after only a few seconds of exposure. The sample sits on a goniometer stage which enables fast crystal rotation and alignment. JOEY is designed in such a way that sample environments like standard cryostats or furnaces can be used on the instrument.
Specifications:
Neutron Source | OPAL Reactor Thermal Guide 3 Wavelength range: 0.8 – 3.2 Å
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Imaging Camera: by Photonic Science | Setup to detect backscatter
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Sample stage ranges: by Huber | xy-stage: 360° with lateral translation
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Stage-positioning accuracy: | Gonio Rx/Ry-axis: ±15”
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Sample Environments: | Load capacity: 200 kg
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