H - Electricity
05
H
353/14, 358/25
H05H 7/06 (2006.01) G21G 4/00 (2006.01) H05H 7/08 (2006.01)
Patent
CA 1308808
- 1 - Abstract In a proton/neutron source incorporating a cyclotron, in particular a superconducting cyclotron having a cylindrical superconducting magnet incorporating superconducting magnetic coils associated with pole pieces, a stream of ionized particles, such as H-particles, is continuously injected into the center of the cyclotron beam space and is accelerated outwards in a spiral path under the combined effect of the magnetic field from the superconducting magnet, and RF energization applied to sector-shaped electrodes. When the particles reach the required energy, they are removed from the spiral path by septa electrodes, and are passed across a proton storage ring in a path of rapidly increasing radius under the influence of the falling magnetic field of the superconducting magnets. A certain distance out from the center of the cyclotron, the magnetic field reverses, and the particles turn anticlockwise and enter a bending magnet in which the route of the particles is bent back towards the cyclotron so that they eventually enter the proton storage ring. As they enter the ring, the particles are stripped of their electrons so that they become positively charged protons, which protons will circulate continuously round the storage ring until required. Extraction from the ring may, for example, be effected by septa electrodes.
609574
Amersham International Plc
Finlan Martin F.
Kirby Eades Gale Baker
Oxford Instruments Ltd.
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