Author: Marchand, C.
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THPB078 Status of the Power Couplers for the ESS Elliptical Cavity Prototypes 1309
 
  • C. Arcambal
    CEA/IRFU, Gif-sur-Yvette, France
  • P. Bosland, M. Desmons, G. Devanz, G. Ferrand, A. Hamdi, P. Hardy, H. Jenhani, F. Leseigneur, C. Marchand, F. Peauger, O. Piquet, D. Roudier, C. Servouin
    CEA/DSM/IRFU, France
  • C. Darve
    ESS, Lund, Sweden
 
  In the frame of the European Spallation Source (ESS) project, a linear accelerator composed of a superconducting section is being developed. This accelerator owns two kinds of cavities called “medium beta cavity” (β=0.67) and “high beta cavity” (β= 0.86). These cavities are equipped with RF power couplers whose main characteristics are: fundamental frequency: 704.42MHz, peak RF power: 1.1MW, repetition rate: 14Hz, RF pulse width>3.1ms. These couplers are common to the two cavities. The CEA Saclay is responsible for the design, the manufacture, the preparation and the conditioning of the couplers used for the Elliptical Cavities Cryomodule Technological Demonstrators (ECCTD). This work is performed in collaboration with ESS and the IPNO. This paper describes the coupler architecture, its different components, the main characteristics and the specific features of its elements (RF performance, dissipated power, cooling, coupler box test for the conditioning). The status of the manufacture of each coupler part is also presented.  
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WEBA04 Performances of Spiral2 Low and High Beta Cryomodules 967
 
  • C. Marchand, P. Bosland, G. Devanz, O. Piquet
    CEA/IRFU, Gif-sur-Yvette, France
  • P.-E. Bernaudin, R. Ferdinand
    GANIL, Caen, France
  • Y. Gómez Martínez
    LPSC, Grenoble Cedex, France
  • D. Longuevergne, G. Olry
    IPN, Orsay, France
 
  All SPIRAL2 cryomodules (twelve with one quarter wave resonator (QWR) at β=0.07 and seven with two QWRs at β=0.12) have been produced and qualified, and are now in installation phase on the LINAC at GANIL. After a general introduction on the LINAC, we will first remember and compare the different design choices taken for the two families of cryomodules. We will then present a summary of the techniques used for the preparation and integration of the cavities in the cryomodules, and compare the achieved performances with design parameters. At last, we describe the status of the LINAC installation as of end of August 2015.  
slides icon Slides WEBA04 [4.577 MB]  
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