Reducing field emission in superconducting cavities with ozone

Ruber, Roger

doi:10.1103/physrevaccelbeams.27.122001

Title: Reducing field emission in superconducting cavities with ozone

Journal Article · 16 December 2024 · Physical Review Accelerators and Beams

DOI: https://doi.org/10.1103/physrevaccelbeams.27.122001 · OSTI ID:2482130

^[1]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Contaminations on the active surface of high-power microwave resonators, such as radio-frequency accelerator cavities, can greatly enlarge electron field emission and reduce their performance. In this work, we demonstrate the use of ozone to clean the surface of niobium superconducting radio-frequency cavities resulting in reduced field emission and enhanced accelerating gradient before onset of field emission. We report results from processing four cavities.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 2482130

Report Number(s):: DOE/OR/23177-7683; JLAB-ACC--24-4195

Journal Information:: Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Journal Issue: 12 Vol. 27; ISSN 2469-9888

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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