Author: Chel, S.
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WEPRB009 Validation of the Series Power Couplers of the LIPAc SRF Linac 2811
  • H. Jenhani, N. Bazin, C. Boulch, S. Chel, G. Devanz, G. Disset, C. Servouin
    CEA-IRFU, Gif-sur-Yvette, France
  • I. Kirpitchev, J. Mollá, P. Méndez, D. Regidor, C. de la Morena
    CIEMAT, Madrid, Spain
  In the framework of the IFMIF/EVEDA project, the cryomodule of the Linear IFMIF Prototype Accelerator (LIPAc) will be assembled then tested at Rokkasho in 2019. Eight Series Power Couplers (PC) operating at 175 MHz were manufactured under a CEA contract, in order to equip this Cryomodule. They were all successfully RF conditioned up to 100 kW CW in TW and SW configurations. All the high RF power tests were performed under CIEMAT responsibility in BTESA Company premises, according to the CEA requirements. In order to fix difficulties encountered during the fab process, manufacturing and quality control have been analyzed in depth. Thanks to the corrective actions implemented, every PC reached the performances targeted for qualification. This paper will give details about this manufacturing phase and provide an overview of the obtained RF test results.  
DOI • reference for this paper ※  
About • paper received ※ 09 May 2019       paper accepted ※ 22 May 2019       issue date ※ 21 June 2019  
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WEPTS010 Beam Dynamics Errors Studies for the IFMIF-DONES SRF-LINAC 3103
  • N. Chauvin, N. Bazin, J. Plouin
    CEA-DRF-IRFU, France
  • S. Chel, L. Du
    CEA-IRFU, Gif-sur-Yvette, France
  The goal of the IFMIF-DONES (International Fusion Materials Irradiation Facility-DEMO Oriented Neutron Source) project is to build an irradiation facility that will provide a sufficient neutron flux to study and characterize structure materials foreseen for future fusion power plant. In order to accelerate the required 125mA/40 MeV continuous deuteron beam from 5 MeV to 40 MeV, a superconducting radio-frequency (SRF) linac, housed in five cryomodules, is proposed. The design is based on two beta families (β=0.11 and β=0.17) of half-wave resonators (HWR) at 175MHz. The transverse focusing is achieved using one solenoid coil per focusing period. This paper presents the extensive multiparticle beam dynamics simulations that have been performed to adapt the beam along the SRF-linac in such a high space charge regime. As one of the constraints of the IFMIF linac is a low level of beam losses, specific optimizations have been done to minimize the beam occupancy in the line (halo). A Monte Carlo error analysis has also been carried out to study the effects of misalignments or field imperfections (static errors) and also vibrations or power supplies ripple (dynamic errors). The results of these errors studies are presented and discussed.  
DOI • reference for this paper ※  
About • paper received ※ 21 May 2019       paper accepted ※ 21 May 2019       issue date ※ 21 June 2019  
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