Superconducting cyclotron: neutron source for therapy

Patent · Tue Dec 09 04:00:00 EST 1975

OSTI ID:7361492

Bigham, C B; Schneider, H R

A neutron source for medical therapy purposes is described. The cyclotron consists of: an iron metal housing acting as a magnetic yoke, magnetic shield, radiation shield, and vacuum vessel; a pair of superconducting coils mounted in a cavity in the housing, the coils being cooled to superconducting temperatures; an ion orbiting region defined by pairs of sectoral-shaped rf electrode structures focusing flutter poles mounted in the intense magnetic field between coils; a source of ions; an ion target to produce neutrons; a channel formed in the iron housing from the target to the exterior for passage of the beam of neutrons formed at the target, the channel acting as a beam collimator; and a mounting structure for movably mounting the cyclotron and target such that the neutron beam produced can be employed at more than one position.

• Assignee: Atomic Energy of Canada Ltd.
• Patent Number(s): US 3925676
• OSTI ID: 7361492
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATORS
COLLIMATORS
CYCLIC ACCELERATORS
CYCLOTRONS
DESIGN
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
ION SOURCES
MAGNETS
MEDICINE
NEUTRON SOURCES
NUCLEAR MEDICINE
PARTICLE SOURCES
RADIATION SOURCES
RADIOLOGY
RADIOTHERAPY
RF SYSTEMS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TARGETS
THERAPY