A. Kolomiets, S. Yaramishev (ITEP)
The concept of High Power Linac for nuclear energetics developed in Russian accelerator centers is based on the use of independently phased SC resonators with quadrupole lenses between them. The type and parameters of the resonators as well as focusing structure are varied along the linac to optimise beam dynamics and the characteristics of the linac. The beam evolution in the linac is studied by simulations in 3D accelerating and focusing fields by computer code DYNAMION. The simulations include all nonlineariries of external and space charge forces. Normal mode operation of the linac is studied along with events in which loss of performance by SC cavities occurs. Estimates of particle losses in the beam were carried out based on analysis of the spectral properties of particle trajectories.
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