Numerical Study of Space Charge Limited Transport in a Quadrupole Transport System with 90 Degree Phase Advance

摘要

Several computer simulations are described which examine the influence of space charge instabilities on an intense beam propagating down an alternate gradient focused channel. By following the detailed non-linear evolution of this system at various currents it is shown that instabilities can cause emittance growth which, by diluting the phase space density of the beam, can limit the current intensity which can be transported. (Author)