LINAC2024 - 32nd Linear Accelerator Conference

Simulations of field emitters and multipacting in PIP-II Single Spoke Resonator Type-2

SUSB014

25 Aug 2024, 16:00

2h

Grand Ballroom (Hilton Chicago)

Student Poster Presentation MC4.8 Superconducting RF Student Poster Session

Speaker

Jacob Brown (Facility for Rare Isotope Beams, Michigan State University)

Description

It has been found in benchmark tests that some Single Spoke Resonator Type-2 (SSR2) cavities have early field emission onset as well as strong multipacting barriers. A longstanding hypothesis is that field-emitted electrons in the high electric field accelerating gap can migrate and ignite multipacting bands in the low electric field regions of the cavity periphery. In this study, we use simulation techniques to examine multipacting behavior in SSR2 cavities from electrons seeded in common field emitter locations. Additionally, we investigated seed locations for areas in SSR2 cavities which may have poor coverage during high pressure water rinsing and compared the multipacting behavior.

Footnotes

This material is based upon work supported by the U.S Department of Energy, Office of Science, Office of Nuclear Physics and used resources of the Facility for Rare Isotope Beams (FRIB) Operations, which is a DOE Office of Science User Facility under Award Number DE-SC0023633.

Funding Agency

U.S Department of Energy, DOE Office of Science User Facility, under Award Number DE-SC0023633