16–21 Aug 2026
Daejeon Convention Center
Asia/Seoul timezone

Plasma Processing Developments for Medium- and High-Beta Cavities in the ESS Linac

Not scheduled
2h
Daejeon Convention Center

Daejeon Convention Center

107 Expo-ro, Yuseong-gu, Daejeon (34125) South Korea
Poster Presentation MC4.A08: Superconducting RF Poster Session

Speaker

Andrea Passarelli (European Spallation Source)

Description

Plasma processing is increasingly recognized as an effective technique for mitigating field emission and restoring the performance of SRF cavities. A collaboration between CEA, ESS and INFN is currently working to adapt and optimize this method for the medium- and high-beta elliptical cavities installed in the ESS linac.
This contribution summarizes ongoing efforts to implement plasma processing both in cavities assembled in cryomodules and in cavities prepared for vertical testing. The work presents electromagnetic analyses performed to identify the modes that best allow processing of the cavities, together with the conceptual design of the vacuum system for the experimental setup. Results obtained on a 704 MHz medium-beta cavity equipped with different couplers are also reported, along with preliminary investigations carried out on the 704 MHz high-beta cavity.

Funding Agency

This work was partially supported by the European Union’s Horizon Europe Marie Sklodowska-Curie Staff Exchanges programme under EAJADE grant agreement no. 101086276

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Author

Elisa Del Core (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)

Co-authors

Andrea Passarelli (European Spallation Source) Angelo Bosotti (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata) Artur Gevorgyan (European Spallation Source) Daniele Sertore (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata) Enrico Cenni (Commissariat à l'Énergie Atomique et aux Énergies Alternatives) Henry Przybilski (European Spallation Source) Paolo Pierini (European Spallation Source)

Presentation materials

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