the australia synchrotron in melbourne circumference = 216 m cost = $206 million
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What is it?. What is a synchrotron? A particle accelerator that produces very bright beams of light: infrared, visible, UV and X-rays. The Australia Synchrotron in Melbourne Circumference = 216 m Cost = $206 million. - PowerPoint PPT PresentationTRANSCRIPT
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What is a synchrotron? A particle accelerator that produces very bright beams of light: infrared, visible, UV and X-rays
The Australia Synchrotron in Melbourne Circumference = 216 mCost = $206 million
European Synchrotron in Grenoble, France one of world’s largest at ~2km circumference
What is it?
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Storage ringANKA, Germany
What does it look like inside?
How does it work?
Bending magnetapprox 7.5 tonnes
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Creating the light
How does it work?
When charged particles such as electrons accelerate they emit electromagnetic waves.
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Electrons are generated here
and initially accelerated in the linear accelerator
(LINAC)
How does it work?
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They then pass into the inner booster ring where they are accelerated to 99.9997% of
the speed of light.
How does it work?
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How does it work?
From the booster ring they are transferred into the storage ring.
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Finally they reach the storage ring.
How does it work?
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Bending magnet - sweeping searchlightAt each deflection of the electron path a beam of radiation is produced.
Types of light sources
Insertion devices - produce higher intensity
WigglerBeams emitted at each pole reinforce each other and appear as a broad beam of incoherent light.
UndulatorProduces a very narrow beam of coherent light, amplified by up to 104
How does it work?
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How does it work?
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How does it work?
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How does it work?
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How does it work?
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Why is wavelength important?
Why is it special?
Visible light X-rays
To penetrate a sample, you need a wavelength of similar, or smaller magnitude.
sample sample
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1. Brilliant - many orders of magnitude brighter than conventional sources, enabling quick experiments on small samples.
Properties of synchrotron light
Properties
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2. Continuous spectrum - from infrared to hard X-rays
Properties
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Why does Australia need a $206 million synchrotron?
The 1200+ scientists who use the Australian synchrotron will make many discoveries. The importance of many of these discoveries will probably only become apparent many years into the future.
When Faraday discovered a method to generate electricity with magnets he was asked ‘what use does it have’, to which he responded, ‘what use is a new born baby?’
This is true of many of the discoveries that will be made with synchrotrons: their importance will only be apparent many years into the future.
Photo: courtesy AIP Emilio Segrè Visual Archives
Summary
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Further reading and resourcesAn excellent animation showing the production of x-rays in a synchrotron can be viewed atwww.isa.au.dk/animations/Finalmovie/astrid_ total_ v2.mov
The State Government of Victoria has further background material www.synchrotron.vic.gov.au
The Canadian Synchrotron website has further resourceswww.lightsource.ca
UWA scientist Dr Peter Hammond has a site on synchrotrons that can be viewed at http://internal.physics.uwa.edu.au/~hammond/SyncRes/