Beam losses due to the foil scattering for CSNS/RCS

TL;DR

This paper investigates beam losses caused by foil scattering in the CSNS/RCS, modeling the interaction and simulating the injection process to quantify losses using ORBIT and FLUKA codes.

Contribution

It presents a combined modeling and simulation approach to analyze foil scattering effects on beam losses during injection in CSNS/RCS.

Findings

Foil scattering contributes to beam halo and losses during injection.

Simulations quantify the extent of beam losses due to foil scattering.

The study provides insights for optimizing injection processes.

Abstract

For the Rapid Cycling Synchrotron of China Spallation Neutron Source (CSNS/RCS), the stripping foil scattering generates the beam halo and gives rise to additional beam losses during the injection process. The interaction between the proton beam and the stripping foil was discussed and the foil scattering was studied. A simple model and the realistic situation of the foil scattering were considered. By using the codes ORBIT and FLUKA, the multi-turn phase space painting injection process with the stripping foil scattering for CSNS/RCS was simulated and the beam losses due to the foil scattering were obtained.