Conversion of an ordinary cyclotron into a variable-energy accelerator

Abstract

The Osaka University 110 cm ordinary cylotron, capable of accelerating protons, deutrons, and α particles to energies of 5.7 MeV, 11.4 MeV, and 22.8 MeV, respectively, has been converted into a variable-energy accelerator. Incorporation of concentric trim coils and of a variable-frequency resonator system are the main features of the conversion. The energies obtainable from the remodeled machine are 2.2–10 MeV for protons, 4.5–13 MeV for deuterons, 7.0–26 MeV for 3He particles, and 9.0–26 MeV for α particles.