Study of superconducting RF 3 GHz cavities realized by spinning

In the context of an R&D program aiming at developing new fabrication techniques, three bulk Niobium 3 GHz seamless SRF cavities were produced by spinning at INFN Legnaro. These prototype cavities for different nominal thicknesses were tested at IPN Orsay in the temperature range 1.7-4.2 K. In t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2007-04, Vol.20 (3), p.233-238
Main Authors: M'GARRECH, S, FOUAIDY, M, LESREL, J, PALMIERI, V, BOUSSON, S
Format: Article
Language:English
Subjects:
Applied sciences
Electronics
Exact sciences and technology
Instrumentation and Detectors
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the context of an R&D program aiming at developing new fabrication techniques, three bulk Niobium 3 GHz seamless SRF cavities were produced by spinning at INFN Legnaro. These prototype cavities for different nominal thicknesses were tested at IPN Orsay in the temperature range 1.7-4.2 K. In the course of the experiments, several parameters were investigated: surface resistance R s vs. temperature T, magnetic penetration depth as function of T and Lorentz forces detuning factor K. Electromagnetic simulations were also performed. The results obtained are reported and discussed. The characteristics Q 0 vs. E acc of the three cavities showed field emission and the RF tests were limited by the power available. Moreover, the energy gap was deduced from the R s vs. T results and compared to data previously reported on niobium leading to a good agreement. Finally, these cavities seem to be more sensitive (i.e. higher detuning factor) to Lorentz forces detuning compared to cavities of same geometry produced by deep drawing and electron beam welding.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-006-0147-x