| 摘要 |
A superconducting cyclotron (1) has four superconducting magnetic coils (2, 3, 4, 5) surrounding a chamber (10). Within the chamber upper and lower sets of soft iron pole pieces (11, 12) are positioned to provide an accelerating particle beam space (13) therebetween. The pole pieces (11, 12) interact with the magnetic field generated by the superconducting coils (2, 3, 4, 5). Cavity resonators (14, 15, 16, 17) are also located within the chamber (10) to generate an RF oscillating voltage across the beam space (13). A linear accelerator (30) is provided axially aligned with the magnetic field of the superconducting magnetic coils to pre-accelarate the ionised particles before the ionised particles are injected into the beam space (13). In this way much higher beam currents may be obtained. A target which may be used to produce heavy isotopes utilising the higher beam currents generated by the cyclotron relies substantially upon radiative cooling during isotope production.
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