Surface Treatments of Nb by Buffered Electropolishing

Conference · Sun Nov 01 04:00:00 EST 2009

OSTI ID:1115737

Wu, Andy T. ^[1]; Rimmer, Robert A. ^[1]; Ciovati, Gianluigi ^[1]; Manus, Robert L. ^[2]; Reece, Charles E. ^[1]; Williams, J. S. ^[1]; Eozénou, F. ^[3]; Jin, S. ^[4]; Lin, L. ^[4]; Lu, X.Y. ^[4]; Mammosser, John D. ^[1]; Wang, E. ^[5]

---

1. JLAB
2. JLAb
3. CEA, Gif-sur-Yvette
4. PKU/IHIP, Beijing
5. BNL

Buffered electropolishing (BEP) is a Nb surface treatment technique developed at Jefferson Lab1. Experimental results obtained from flat Nb samples show2-4 that BEP can produce a surface finish much smoother than that produced by the conventional electropolishing (EP), while Nb removal rate can be as high as 4.67 μm/min. This new technique has been applied to the treatments of Nb SRF single cell cavity employing a vertical polishing system5 constructed at JLab as well as a horizontal polishing system at CEA Saclay. Preliminary results show that the accelerating gradient can reach 32 MV/m for a large grain cavity and 26.7 MV/m for a regular grain cavity. In this presentation, the latest progresses from the international collaboration between Peking University, CEA Saclay, and JLab on BEP will be summarized.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 1115737
• Report Number(s): JLAB-ACC-09-1093; DOE/OR/23177-1093
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE