Vertical Electro-Polishing of 704 MHz Resonators Using Ninja Cathode: First Results - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

Vertical Electro-Polishing of 704 MHz Resonators Using Ninja Cathode: First Results

Résumé

Vertical Electro-Polishing (VEP) of elliptical cavities using rotating Ninja cathodes (Marui Company patented technology) has continually been improved since 2012 and successfully applied for 1300MHz multicell ILC-type resonators. The goal of the presented study is to apply this technology to 704 MHz ESS-type resonators with both better Q₀ and accelerating gradients in mind. We intend to demonstrate the superiority of VEP compared to standard Buffer Chemical Polishing (BCP), for possible applications such as MYRRHA accelerator. We describe here the promising results achieved on β=0.86 single-cell cavity after 200 µm uniform removal. The cavity quenched at 27 MV/m without any heat treatment. The surface resistance achieved was less than 5nΩ at 1.8K. Substantial performance improvement is expected after heat treatment of the cavity and additional 20 µm VEP sequence. A cathode for 5-Cell ESS cavity is concomitantly under design stage.
Fichier non déposé

Dates et versions

hal-04017199 , version 1 (07-03-2023)

Identifiants

Citer

Fabien Éozénou, Matthieu Baudrier, Enrico Cenni, Vijay Chouhan, Elise Fayette, et al.. Vertical Electro-Polishing of 704 MHz Resonators Using Ninja Cathode: First Results. 20th International Conference on RF Superconductivity, Jun 2021, Online Conference, United States. pp.TUPCAV001, ⟨10.18429/JACoW-SRF2021-TUPCAV001⟩. ⟨hal-04017199⟩
4 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More