Proposal for a Sector-Focusing Synchro-Cyclotron

A modification is proposed for the Uppsala 185 MeV Synchro-cyclotron to obtain a high intensity beam of different particles. By introducing sectors, a radially increasing magnetic field can be used. The reduced bandwidth makes it possible to replace the present rotating condenser by an electronically tuned broadband system. Protons will be accelerated with decreasing and heavier particles with increasing frequencies. No correction coils are required. Expected external currents are of the order of 10 μA.