Cyclotron and neutron therapy installation incorporating such a cyclotron

Patent · Tue Feb 13 00:00:00 EST 1979

OSTI ID:5760511

Rautenbach, W L

This invention describes a cyclotron suitable for use in neutron therapy, and comprising a pair of opposed, spaced pole shoes having their adjacent inner surfaces defining an accelerator zone, an electromagnetic coil system, at least one hollow accelerating dee electrode positioned in the accelerator zone, and having a radio-frequency resonator associated therewith, a magnet yoke shaped to substantially enclose the accelerator zone and constitute a neutron attenuation shield for neutrons produced in the cyclotron, a vacuum chamber enclosing the accelerator zone and each dee electrode, means for providing charged particles for acceleration within the accelerator zone, a target zone for a target device, and a neutron beam outlet in the magnet yoke for emission of a neutron beam produced in the cyclotron. The cyclotron includes auxiliary neutron shield means in the forward peak zone of a neutron beam produced in the cyclotron to attenuate neutron and gamma radiation in the forward peak zone to a patient tolerable level. Each radiofrequency resonator is enclosed within the magnet yoke. The cyclotron may have pivot means for pivotally mounting the cyclotron to allow variation of the direction of a neutron beam during use. The disclosure further relates to a neutron therapy installation incorporating such a cyclotron.

• Assignee: TIC; EDB-80-002419
• Patent Number(s): US 4139777
• OSTI ID: 5760511
• Resource Relation: Patent Priority Date: Priority date 19 Nov 1975, South Africa
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
62 RADIOLOGY AND NUCLEAR MEDICINE
CYCLOTRONS
DESIGN
NEUTRON THERAPY
EQUIPMENT
INSTALLATION
DEES
ELECTROMAGNETS
GAMMA RADIATION
MAGNETS
NEUTRON BEAMS
SHIELDING
TARGET CHAMBERS
THERAPY
VACUUM SYSTEMS
ACCELERATOR FACILITIES
ACCELERATORS
BEAMS
CYCLIC ACCELERATORS
ELECTRICAL EQUIPMENT
ELECTRODES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
MEDICINE
NUCLEAR MEDICINE
NUCLEON BEAMS
PARTICLE BEAMS
RADIATIONS
RADIOLOGY
RADIOTHERAPY
560151* - Radiation Effects on Animals- Man
550601 - Medicine- Unsealed Radionuclides in Diagnostics