This paper describes the equations governing the proton beam in a small cyclotron and reports calculations carried out on the Iowa State University undergraduate cyclotron. These calculations relate the intensity of the proton beam to changes in the magnetic field of the cyclotron and give the beam height as a function of the radius drawn from the center of the dee box. It was found that changes in the magnetic field strength of only a few gauss can result in a large reduction of the beam strength. Calculations of the beam height show that the beam height changes little with changes in the magnetic field, but rather that the beam height is almost completely determined by the derivative, ∂B/∂r, of the magnetic field.
Proceedings of the Iowa Academy of Science
©1961 Iowa Academy of Science, Inc.
Mueller, Alfred H.
"Proton Orbit Calculations for the Iowa State University Cyclotron,"
Proceedings of the Iowa Academy of Science, 68(1), 492-501.
Available at: https://scholarworks.uni.edu/pias/vol68/iss1/67