Title :
Superconducting cavities for the LEP energy upgrade
Author :
Cavallari, G. ; Benvenuti, C. ; Bernard, P. ; Bloess, D. ; Chiaveri, E. ; Genesio, F. ; Haebe, E. ; Hilleret, N. ; Tuckmante, J. ; Weingarten, W.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
The technology of sputter coating of Cu cavities with Nb has been developed at CERN. The advantages of this technique have led CERN to order 168 of such cavities in industry. After an initial phase of technology transfer and of prototype development, the series production has been started in fall 92 by the three contractors. The results of the bare cavity tests are reported. Fixed and movable 120 kW power couplers (MC) have been designed, manufactured and put into operation. Various models of higher order mode (HOM) couplers have been developed to cope with foreseen increase of the beam intensity. Special care is given to the conditioning of power couplers and of HOM couplers before installation in the machine
Keywords :
beam handling equipment; electron accelerators; sputtered coatings; storage rings; 120 kW; CERN; Cu; Cu cavities; Cu-Nb; LEP energy upgrade; bare cavity tests; beam intensity; conditioning; higher order mode couplers; power couplers; prototype development; series production; sputter coating; superconducting cavities; technology transfer; Adhesives; Coatings; Etching; Helium; Niobium; Optical coupling; Optical films; Radio frequency; Temperature; Testing;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308766
