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KVI - Center for Advanced Radiation TechnologyOnderzoek en onderwijsAGOR

Bending Limit

Another parameter is the bending limit Kb, expressing the (magnetic field) strength of the cyclotron. Rewriting the formula for the kinetic energy one gets

  • T = p2 / 2m = (qBR)2 / 2m

where R is the extraction radius, q (m) the charge (mass) of the particle and B the strength of the field. Because the magnet coils have a limiting current, there is an upper bound on the magnetic field, which means the kinetic energy of the accelerated particle is bounded by

  • T / A  <  Kb  (Z / A) 2
  • Kb  = (eBR)2 / 2m0

with e the electron charge and m0 the proton rest mass. The bending limit for AGOR is 600 MeV, which makes it a K600 cyclotron, as it is also called.

Last modified:28 January 2014 12.06 p.m.