Electron emission of stripping foil and collimation system for CSNS/RCS

TL;DR

This paper investigates electron emission phenomena in the CSNS/RCS accelerator, focusing on interactions with the stripping foil and collimation system, using simulations to analyze electron energy distributions and yields to inform accelerator limitations.

Contribution

It provides a detailed simulation-based analysis of electron scattering and emission processes in the CSNS/RCS, which is novel for this specific accelerator system.

Findings

Electron energy distribution profiles were obtained.

Electron yield rates were quantified.

Insights into electron emission impact on accelerator operation.

Abstract

For the Rapid Cycling Synchrotron of the China Spallation Neutron Source (CSNS/RCS), the electron emission plays an important role in the accelerator limitation. The interactions between the proton beam and the stripping foil were studied, and the electron scattering processes were simulated by the ORBIT and FLUKA codes. Then, the electron energy distribution and the electron yielding rate can be given. Furthermore, the interactions between the proton beam and the collimation system were studied, and the electron scattering processes were simulated. Then, the energy distribution of the primary electron emission can be given and the yielding rate of the primary electron can be obtained.