A 100MeV compact high intensity H-cyclotron is under design and construction at CIAE which will provide a 75MeV—100MeV,200μA proton beam.The main magnet of this cyclotron adopts an integrally compact structure with a fixed field and four sectors,while the hill gap is constantly changeable.This paper reviews the design features of the magnet,numerical simulation results,the inner defects of the magnet including the carbon content segregation and shrinkage porosity,factors related to mechanical design including the tolerance and deformation.The latest progress will also be reported in this paper.
Cusp source is one of the essential elements in high density cyclotron,whose properties have a great impact on the extracted beam of the cyclotron.The article introduces the design and machining of the H-cusp source applied to the high intensity proton beam cyclotron.By investigating deeply the technology of high intensity plasma production, long life DC filament emission of electrons,magnetic confinement,electron filtering,residual gas and electron extraction control,we designed a new cusp source with an average beam density of 15—20mA based on the 10mA H-cusp source at CIAE.
