Particle Accelerators for Research and for Medicine
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Transcript of Particle Accelerators for Research and for Medicine
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Particle Accelerators for Research and for Medicine
Prof. Ted Wilson (CERN and Oxford University)
based on the book:
ISBN-013 978-981-270-070-4
http://www.enginesofdiscovery.com/This talk:http://www.enginesofdiscovery.com/eod.pdf
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2Engines of Discovery
Rutherford fired the starting pistol
The race to high energies
At the Royal Society in 1928 he said “I have long hoped for a source of positive particles more energetic than those emitted from natural radioactive substances”.
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The Large Hadron Collider (LHC)The LHC, at CERN, is the primary toolto which high-energy physicistsare looking. The hope is to discover the Higgs particle. The machine is 28 kmin circumference.
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An “exploded” diagram of the ATLAS detector, for the LHC.
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5Engines of Discovery
Wideroe invented the Linac
Particle gains energy at each gap Lengths of drift tubes follow
increasing velocity Spacing becomes regular as v
approaches c
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Vdee~
+
Þ At all radii particles cross acceleration gap at same moment !
r
Cyclotron
Magnet
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The 60-inch cyclotron. The picture was taken in 1939.
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Spect diagnosis
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9Engines of Discovery
Linacs – an idea waiting for a technology
Luis Alvarez
Ed Ginzton
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The induction accelerator, FXR, at Lawrence Livermore, to study the behavior of the implosion process in nuclear weapons
Induction Linacs
The Dual Axis Radiological Hydrodynamic Test Facility This device is to examine nuclear weapons from two axes to reveal departures from cylindrical
symmetry which is a sign of aging.
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The Synchrotron
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12Engines of Discovery
This 300 MeV electron synchroton at the General Electric Co. at Schenectady, built in the late 1940s. The photograph shows a beam of synchrotron radiation emerging.
First electron synchroton