JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{eozenou:linac2022-thpoge23,
author = {F. Éozénou and M. Baudrier and E. Cenni and E. Fayette and H. Hayano and Y.I. Ida and H. Ito and G. Jullien and S. Kato and T. Kubo and L. Maurice and H. Monjushiro and K. Nii and T. Saeki and C. Servouin and T.Y. Yamaguchi},
% author = {F. Éozénou and M. Baudrier and E. Cenni and E. Fayette and H. Hayano and Y.I. Ida and others},
% author = {F. Éozénou and others},
title = {{Vertical Electro-Polishing of 704 MHz Resonators Using Ninja Cathode: Gradients Over 40 MV/m Achieved on ESS Single-Cell Cavity}},
booktitle = {Proc. LINAC'22},
% booktitle = {Proc. 31st International Linear Accelerator Conference (LINAC'22)},
pages = {844--847},
eid = {THPOGE23},
language = {english},
keywords = {cavity, cathode, niobium, SRF, linac},
venue = {Liverpool, UK},
series = {International Linear Accelerator Conference},
number = {31},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {09},
year = {2022},
issn = {2226-0366},
isbn = {978-3-95450-215-8},
doi = {10.18429/JACoW-LINAC2022-THPOGE23},
url = {https://jacow.org/linac2022/papers/thpoge23.pdf},
abstract = {{CEA, KEK and Marui Galvanizing Company have been collaborating to apply the Vertical Electropolishing (VEP) process of elliptical SRF cavities to a 704MHz single-cell ESS-type cavity, using a rotating so called and patented "Ninja" cathode. First presented results* were promising with a gradient of 27MV/m achieved, without any heat treatment applied. The performance has been pushed further since. The cavity has undergone a heat treatment at 650°C during 10h, followed by a final VEP sequence and a baking at 120°C during 48h hours. The achieved gradient at 2K was 44MV/m (power limitation), and the quality factor Q₀ exceeding 5·10¹⁰ up to 10 MV/m. The superiority of VEP compared to standard "BCP" chemical treatment is demonstrated and we intend now to scale the process to 5-Cell β=0.86 ESS cavity. We also intend to push further the performance by applying "2-step baking" (75°C and 120°C) proposed by FNAL, which was successfully applied at CEA Saclay on 1300MHz single-cell resonators with gradients above 50MV/m achieved after VEP bulk treatment.}},
}