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The cyclotron is facilities to accelerate by an electric field by the high frequency that synchronized for the turning of a charged particle tracing the spiral orbit in a perpendicular plane in the magnetic static field direction.

There are various kinds to a high energy type for nuclear physics from a low energy type which produces the short half life radioisotope for PET.

AVF Cyclotron

AVF is abbreviation of "Azimuthally Varying Field" that means the magnetic field change with alternate strong and weak to focus beam axially.

Ring Cyclotron

A kind of AVF cyclotron, the magenets are designed radially separated several sectors.

Sumitomo Heavy Industries. Ltd. Industrial Equipment Division