Speaker
Description
For industrial application, cyclotrons have been available for radioactive ion beam (RI) production and hadron cancer therapy. Industrial fields welcome the compact machine and furthermore require high current output. Downsizing cyclotrons are achieved with high magnetic field generated by superconducting coils but in case of proton, high magnetic field makes it difficult to extract an external ion source as low energy protons orbit the small radius. On the other hand, internal ion sources are often used for it.
PIG type ion sources are used as internal ions sources for cyclotron, which take the own magnetic field provided by cyclotron itself. Hot cathode type ion sources have another parameter for plasma parameters when comparing with cold type and it makes hot cathode type possible to control beam current finely. We report the progress of our development of a compact internal ion source which is PIG type with hot cathode.
