Speaker
Description
Field emission is one of the main problems that is difficult to completely avoid in superconducting accelerator project, and it is usually considered to be caused by particles or chemical residuals. Although careful assembly and cleaning can minimize or eliminate this issue, field emission may still occur to some extent. This report focuses on the field emission problem faced in the SHINE project, including the field emission of bare cavities and of cryomodules. Through statistical analysis, possible correlations between processing and the occurrence of field emission were identified, allowing targeted countermeasures to be implemented and resulting in a noticeable reduction in field emission probability. Ongoing monitoring will be maintained to keep the field emission occurrence rate low in SRF cavities and to further toward field emission-free cryomodules.
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