Electron Cooling Simulation and Experimental Benchmarks at LEIR

A simulation of the electron cooling has recently been implemented in the tracking code RF-Track. The implementation was based on a "hybrid kinetic" model, where the full 6-D phase space of a particle beam is immersed in a fluid plasma of electrons. The computation of the cooling force was based on analytic models derived using the “di-electric theory” and the “binary collision approximation”, numerically integrated to consider the thermal properties of the electrons. This gives the code the flexibility needed to simulate a large variety of realistic scenarios, including imperfections such as gradients in the electron density and hollow electron beam; relative misalignments of electron beam, ion beam, and solenoid field. Benchmarks of the simulations against results in the literature as well as against measurements performed at LEIR using Xenon ions are presented.