INFLUENCE OF BEAM SPACE CHARGE ON DYNAMICAL APERTURE OF TWAC STORAGE RING

V.V. Kapinª, A.Ye. Boshakov, P.R. Zenkevich

Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia

Abstract

High intensity ion beams are planned to store in Terra Watt Accumulator (TWAC) at ITEP (Moscow). A size of the phase-space domain where one can safely operate with the beam is related to the dynamic aperture (DA). The DA measured in units of Courant-Snyder invariant is studied numerically with account of the space charge forces (the "frozen core" model) and perturbations of the guiding magnetic field for particles with non-zero momentum deviations. An economical DA-algorithm used for SIS-100 studies with the "Micromap-code" developed at GSI (Darmstadt) has been implemented for MADX-code via its macro-scripts. The results have shown a significant dependence of DA on intensity, especially for particles with a non-zero momentum deviation.

ª – corresponding author

Paper Slides

399