Cyclotron and neutron therapy installation incorporating such a

Details Cyclotron and neutron therapy installation incorporating such a Cyclotron and neutron therapy installation incorporating such a

1976-11-03

1979-02-13

Smith, Alfred E.

Radiant energy

Radiant energy generation and sources

With container for radioactive source and radiation...

313615, G21G 402

Patent

active

041397770

ABSTRACT:
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 radio-frequency 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.

REFERENCES:
patent: 3609369 (1971-09-01), Croitora
patent: 3786258 (1974-01-01), Schmidt
patent: 3925676 (1975-12-01), Bigham et al.

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