ANALYTICAL STUDY OF BEAM EQUILIBRIUM IN HIGH ENERGY STORAGE RINGFOR NON-MAGNETIZED ELECTRON COOLING

P. Zenkevichª¹, A. Lehrach²

¹Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia

²Forschungszentrum Jülich GmbH, Jülich, Deutsch

Abstract

In high energy storage rings (for example, in proposed antiproton High Energy Storage Ring (HESR), which is part of the international accelerator complex FAIR), it is intended to use electron cooling for the compensation of beam heating due to beam interaction with the internal pellet target. For beams with high emittance (such emittance is necessary in order to get sufficient beam- target overlap) magnetized electron cooling does not work. Therefore we consider an analytical theory of beam equilibrium in presence of internal target using formulae derived in [1] for non-magnetized model of electron cooling. As a result we find the analytical expressions for momentum spread and the electron current as function of the beam emittance and beam energy. This theory is applied for estimation of HESR parameters.

ª – corresponding author

Paper Slides

93