Proton source

Details Proton source Proton source

1989-08-22

1991-05-21

O'Shea, Sandra L.

Electric lamp and discharge devices

With temperature modifier

For lead-in-seal or stem protection

313 62, H05H 1300, H05H 3110

Patent

active

050178822

ABSTRACT:
In a proton
eutron 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.sup.- 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.

REFERENCES:
patent: 3794927 (1974-02-01), Fleischer et al.
patent: 3868522 (1975-02-01), Bigham et al.
W. Joho, IEEE Transactions on Nuclear Science, "Astor, Concept of a Combined Acceleration and Storage Ring for the Production of Intense Pulsed or Continuous Beams of Neutrinos, Pions, Muons, Kaons and Neutrons", Aug. 1983.
P. A. Smith, Nuclear Instruments and Methods, "Possible Methods for Improving the Resolution of Neutron Time-of-Flight Measurements of Direct Reaction Spectra", 7/1979.

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