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Bosland P.

PaperTitlePage
TUP78Status of the Cryomodules and Cavities Development for the SPIRAL2 Superconducting Linac339
 
  • G. Olry, S. Blivet, N. Hammoudi, D. Longuevergne, F. Lutton, G. Martinet, G. Michel, H. Saugnac, P. Szott
    IPN Orsay
  • P-E. Bernaudin, P. Bosland, G. Devanz, C. Madec, A. Perolat
    CEA-Saclay
 
 The French laboratories CEA/Saclay and IPN Orsay, involved in the SPIRAL2 project, are now preparing the final tests of the two qualifying cryomodules (called respectively A for the beta 0.07 cavities and B for the beta 0.12 cavities) in order to start the series production in 2008. Each cryomodule A and B will be tested at 4.2 K and nominal power (10 kW, CW). This paper presents an update of the cryomodules and cavities developments (first results at room temperature, first assembly...) which have been presented in [1]. 
TUP81Stiffened Medium Beta 704 MHZ Elliptical Cavity for a Pulsed Proton Linac347
 
  • P. Bosland, S. Chel, G. Devanz, Y. Gasser, P. Hardy, J. Plouin, J. -P. Poupeau, D. Roudier, B. Visentin
    CEA-Saclay
 
 Recent developments on high duty cycle high intensity proton linac have used, in the high energy part, the superconducting technology because it is considered to be advantageous in terms of power consumption, construction cost and beam loss. In the framework of the European CARE/HIPPI program, we investigate different options to use the same superconducting technology even in the low energy part of the linac (from 5 MeV to 200 MeV). Different kind of superconducting structures (CH structures, spoke or elliptical cavities) are necessary to cover this whole energy range. Since the higher energy part will be equipped with elliptical cavities, we propose a 704 MHz elliptical cavity which could be advantageously used in the range 80 MeV up to 200 MeV. An optimized design of this cavity for running in pulsed mode is presented. The sensitivity of the cavity to pulsed RF is investigated to assess the efficiency of the stiffening scheme. 
WEP53Operation of the SOLEIL RF system615
 
  • P. Marchand, H. Dias, M. Diop, M. ElAjjouri, J. Labelle, R. Lopes, M. Louvet, C. Monnot, F. Ribeiro, T. Ruan, R. Sreedharan, K. Tavakoli
    SOLEIL, Gif-sur-Yvette
  • P. Bosland, P. Bredy, C. Madec
    CEA/DSM/DAPNIA, Gif-sur-Yvette
 
 The 352 MHz RF accelerating systems for the SOLEIL Booster (BO) and Storage Ring (SR) are in operation since mid 2006. In the BO, a 5-cell copper cavity of the CERN-LEP type is powered with a 35 kW solid state amplifier. In the SR, the required RF accelerating voltage (up to 4.4 MV) and power (560 kW at full beam current of 500 mA) will be provided by two cryomodules, each containing a pair of superconducting cavities, specifically designed for SOLEIL. The first cryomodule is operational, while the second one, which is being constructed by ACCEL (Germany), will be implemented in May 2008. Both cryomodules are cooled down to 4.2 K with liquid helium from a single 350 W liquefier and each cavity is powered by a 180 kW solid state amplifier. Using a single cryomodule and two amplifiers, the first objective of storing 300 mA stable beam was successfully achieved in 2006. The RF system commissioning and operation results are reported.