A technique to measure the temperature of Niobium components in vacuum during Electron Beam Welding (EBW) operation is presented and results obtained on the large scale cavity production for the European XFEL are discussed. During the EBW process, the knowledge of the components temperature during the welding operation could help both for the better choice of the welding parameters and for the optimization of the production cycle. In collaboration with the Italian firm Ettore Zanon (EZ), we developed a system able to measure the temperature of Nb components in vacuum during EBW operation using a IR pyrometer placed outside the vacuum chamber through an appropriate vacuum viewport. In the paper the experience of this device during the production of Nb components for the XFEL 1.3 GHz cavity production is discussed.
Application of in-vacuum infrared pyrometry during fabrication of European XFEL niobium cavities / L. Monaco, P. Michelato, D. Sertore, V. Battista, G. Corniani, M. Festa, C. Pagani - In: SRF2013 : Proceedings of the 16. International conference on RF superconductivity : Paris, France, 22-27 September 2013 / [a cura di] C. Antoine, S. Bousson, G. Martinet. - Paris : JACoW, 2014 Feb. - ISBN 978-3-95450-143-4. - pp. 570-574 (( Intervento presentato al 16. convegno International conference on RF superconductivity tenutosi a Paris nel 2013.
Application of in-vacuum infrared pyrometry during fabrication of European XFEL niobium cavities
C. PaganiUltimo
2014
Abstract
A technique to measure the temperature of Niobium components in vacuum during Electron Beam Welding (EBW) operation is presented and results obtained on the large scale cavity production for the European XFEL are discussed. During the EBW process, the knowledge of the components temperature during the welding operation could help both for the better choice of the welding parameters and for the optimization of the production cycle. In collaboration with the Italian firm Ettore Zanon (EZ), we developed a system able to measure the temperature of Nb components in vacuum during EBW operation using a IR pyrometer placed outside the vacuum chamber through an appropriate vacuum viewport. In the paper the experience of this device during the production of Nb components for the XFEL 1.3 GHz cavity production is discussed.
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