LINAC2026 - 33rd Linear Accelerator Conference

Investigation of beam loss mechanism by parasitic H− in high-power proton linac

Not scheduled

2h

Daejeon Convention Center

Poster Presentation MC3.A03: Other proton/ion Poster Session

Speaker

Mr Zhijun Wang (Institute of Modern Physics)

Description

This talk treats parasitic creation and acceleration of H-particles in a proton linear accelerator. It proposes, and provides evidence, that protons extracted from an ECR source interact with residual gas along the LEBT section thus creating H- ions. These are transported to the RFQ, RF-bunched therein, and finally RF-accelerated up to the nominal proton energy. Once passing a deflection dipole, H- manifests through significantly increased radiation dose levels at the deflection direction being opposite to the proton deflection direction.