| Title |
Investigation of an Alternative Path for SRF Cavity Fabrication and Surface Processing |
| Authors |
- O. Hryhorenko, D. Longuevergne
Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- C.Z. Antoine
CEA-IRFU, Gif-sur-Yvette, France
- F. Brisset
ICMMO, Orsay, France
- T. Dohmae
KEK, Ibaraki, Japan
|
| Abstract |
The preparation of SRF cavities includes a lengthy, costly, and safety issued electrochemical polishing (EP or BCP) step to remove the damaged layer coming from the cavity fabrication. We have shown that most of the damage layer is originated from the rolling process during the preparation of the sheet material, while subsequent deep drawing tends to leave only µm thick damage layer. We propose a 2-steps mechanical process that allows us to easily get rid of the thick damage layer on the sheets before cavity forming. The process has been established on samples and extended to large disks ready for 1.3 GHz half-cell forming. The polished sheets will be then sent to KEK for half-cell forming and subsequent surface and material analysis before proceeding to half-cell welding. Former studies on the sample demonstrated that damages induced by forming can successfully be removed by recrystallization and less than 10 µm final chemistry.
|
| Paper |
download MOPFDV001.PDF [2.262 MB / 4 pages] |
| Poster |
download MOPFDV001_POSTER.PDF [2.309 MB] |
| Cite |
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※ EndNote |
| Conference |
SRF2021 |
| Series |
International Conference on RF Superconductivity (20th) |
| Location |
East Lansing, MI, USA |
| Date |
28 June-02 July 2021 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Kenji Saito (FRIB, MSU, East Lansing, MI, USA); Ting Xu (FRIB, MSU, East Lansing, MI, USA); Naruhiko Sakamoto (RIKEN, Wako, Japan); Ana Lesage (FRIB, MSU, East Lansing, MI, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-233-2 |
| Online ISSN |
2673-5504 |
| Received |
25 June 2021 |
| Revised |
11 July 2021 |
| Accepted |
21 August 2021 |
| Issue Date |
15 May 2022 |
| DOI |
doi:10.18429/JACoW-SRF2021-MOPFDV001 |
| Pages |
319-322 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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