First measurement of a NbTi RF cavity

Author

Fabbricatore, P. ; Gemme, G. ; Musenich, R. ; Parodi, R. ; Viviani, M. ; Zhang, B. ; Sinko, R.J.

Author_Institution

INFN, Genova, Italy

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

197

Lastpage

199

Abstract

The first measurement of a NbTi superconducting accelerating cavity at 4.5 GHz is reported. As a first step of a R&D project for the study of new promising superconducting materials for future applications to RF accelerating structures, a NbTi cavity was built using the same technique developed for niobium cavities. The cavity was electron beam welded, chemical polished, and rinsed with high purity water. A first test has shown very good agreement between measured and computed RF surface resistance down to 1.8 K. The authors used the Halbritter´s code for RF loss computation in superconductors to obtain from measured data information about the coherence length, the penetration depth, the mean free path, and the strong coupling coefficient of the material.<>

Keywords

beam handling equipment; cavity resonators; niobium alloys; superconducting microwave devices; titanium alloys; 4.5 GHz; Halbritter´s code; NbTi; RF cavity; RF loss computation; chemical polished; coherence length; electron beam welded; mean free path; penetration depth; strong coupling coefficient; superconducting accelerating cavity; Acceleration; Electrical resistance measurement; Electron beams; Length measurement; Loss measurement; Niobium compounds; Radio frequency; Superconducting materials; Surface resistance; Titanium compounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233704

Filename

233704