Author: Di Giacomo, M.
Paper Title Page
MOPTS006 Final Results of the SPIRAL2 Injector Commissioning 848
 
  • R. Ferdinand, M. Di Giacomo, H. Franberg, J.-M. Lagniel, G. Normand, A. Savalle
    GANIL, Caen, France
  • D. Uriot
    CEA-DRF-IRFU, France
 
  The SPIRAL2 injector, made up of a 5 mA p-d ion source, a 1 mA heavy ion source (up to A/Q = 3) and a CW 0.75 MeV/u RFQ, has been commissioned in parallel with the superconducting linac installation. This com-missioning is successfully completed now and the Diag-nostic plate (D-plate) used to characterize the injector beams is removed. This paper presents the results ob-tained with the reference particles (H+, 4He2+, 18O6+ and 40Ar14+) and a comparison with the simulations. The connexion to the SC linac and the future linac beam commissioning is briefly described.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-MOPTS006  
About • paper received ※ 12 May 2019       paper accepted ※ 20 May 2019       issue date ※ 21 June 2019  
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TUPTS007 SPIRAL2 RFQ Bunch Length and Longitudinal Emittance Measurements. 1944
 
  • G. Normand, M. Di Giacomo, R. Ferdinand, O. Kamalou, J.-M. Lagniel, A. Savalle
    GANIL, Caen, France
  • D. Uriot
    CEA-DRF-IRFU, France
 
  The SPIRAL2 RFQ is designed to accelerate light and heavy ions up to A/Q=3 in CW mode to 0.75MeV/u. During its commissioning, the bunch lengths measured using a Beam Extension Monitor were compared with simulations for different ion species (Proton, Helium, Oxygen, Argon). The longitudinal emittances measured using the 3 gradients method and a multiparticule optimization method were also compared successfully to the expected ones.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-TUPTS007  
About • paper received ※ 19 April 2019       paper accepted ※ 21 May 2019       issue date ※ 21 June 2019  
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WEPRB007 RF Commissioning of the SPIRAL2 RFQ in CW Mode and Beyond Nominal Field 2804
 
  • M. Di Giacomo, R. Ferdinand, H. Franberg, J.-M. Lagniel, G. Normand
    GANIL, Caen, France
  • M. Desmons, P. Galdemard, Y. Lussignol, O. Piquet, S. Sube
    CEA-DRF-IRFU, France
 
  The SPIRAL2 RFQ was recently successfully commissioned at nominal voltage of 114 kV, corresponding to 1.65 Kilpatrick factor. The paper describes limitations of the RFQ main subsystems, cavity conditioning difficulties, as well as changes implemented in the LLRF and automatic procedures to simplify turn on and operation of the whole system.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB007  
About • paper received ※ 26 April 2019       paper accepted ※ 22 May 2019       issue date ※ 21 June 2019  
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WEPRB010 RF Power Test of the Rebuncher for Saraf-Linac 2815
 
  • L. Zhao, R. Berthier, F. Gougnaud, P. Guiho, N. Solenne, D. Uriot, X.W. Zhu
    CEA-DRF-IRFU, France
  • R. Braud, D. Chirpaz-Cerbat, J. Dumas, R.D. Duperrier, F. Gohier, T.J. Joannem, S. Ladegaillerie, C. Marchand, O. Piquet
    CEA-IRFU, Gif-sur-Yvette, France
  • M. Di Giacomo, J.F. Leyge, M. Michel
    GANIL, Caen, France
  • B. Kaizer, L. Weissman
    Soreq NRC, Yavne, Israel
 
  Funding: SNRC
Three normal conducting rebunchers will be installed at the Medium Energy Beam Transport (MEBT) of the SARAF-LINAC phase II [saraf]. The MEBT line is designed to follow a 1.3 MeV/u RFQ, is about 5 m long, and contains three 176 MHz rebunchers providing a field integral of 105 kV. CEA is in charge of the design and fabrication of the Cu plated stainless steel, 3-gap rebuncher. The high power tests and RF conditioning have been successfully performed at the CEA Saclay on the first cavity. A solid state power amplifier, which has been developed by SNRC and has been used for the RF tests. The cavity has shown a good performance according to calculations, regarding the dissipated power, peak temperatures and coupling factor. RF conditioning was started with a duty cycle of 1\% and increased gradually until continuous wave (CW), which is the nominal working mode in SARAF-LINAC.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB010  
About • paper received ※ 09 May 2019       paper accepted ※ 22 May 2019       issue date ※ 21 June 2019  
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