Beam Dynamics Simulation of the LEBT for the Heavy-Ion Linear Accelerator

Abstract

The LEBT channel is defigned for transporting beams of multiply charged ions with A/Z from 4 to 8 (up to ²⁰⁹Bi²⁷⁺) from a laser source of heavy ions and 70 kV extractor system to the initial part of the linear accelerator. The LEBT consists of: the transport line for separation of the main ion beam, and the section for beam matching with the accelerating section RFQ. Beam dynamic simulation was carried out taking into account fields three-dimensional distributions of the magnetic elements. As a result of the simulation of particle dynamics, it was possible to provide the 4-dimensional matching of ²⁰⁹Bi²⁷⁺ with the RFQ, with a minimum emittance increasing in the LEBT.