Author: Bolzon, B.
Paper Title Page
THP1WB01 Commissioning Status of Linear IFMIF Prototype Accelerator (LIPAc) 366
 
  • A. Kasugai, T. Akagi, T. Ebisawa, Y. Hirata, R. Ichimiya, K. Kondo, S. Maebara, K. Sakamoto, T. Shinya, M. Sugimoto
    QST, Aomori, Japan
  • P. Abbon, N. Bazin, B. Bolzon, N. Chauvin, S. Chel, R. Gobin, J. Marroncle, B. Renard
    CEA/DSM/IRFU, France
  • L. Antoniazzi, L. Bellan, D. Bortolato, M. Comunian, E. Fagotti, F. Grespan, M. Montis, A. Palmieri, A. Pisent
    INFN/LNL, Legnaro (PD), Italy
  • P.-Y. Beauvais, H. Dzitko, D. Gex, A. Jokinen, G. Phillips
    F4E, Germany
  • P. Cara, R. Heidinger, I. Moya
    Fusion for Energy, Garching, Germany
  • D. Jiménez-Rey, I. Kirpitchev, J. Mollá, P. Méndez, I. Podadera, D. Regidor, M. Weber, C. de la Morena
    CIEMAT, Madrid, Spain
  • J. Knaster, A. Marqueta, G. Pruneri, F. Scantamburlo
    IFMIF/EVEDA, Rokkasho, Japan
 
  The IFMIF project aiming at material tests for a future fusion DEMO reactor is under the EVEDA phase in the BA Agreement of fusion program between Japan and EU. As the accelerator activity, the installation and commissioning of the Linear IFMIF Prototype Accelerator (LIPAc) is at the second stage of demonstration of the feasibility of the low energy section of an IFMIF deuteron accelerator up to 9 MeV with a beam current of 125 mA, CW. The installation of injector, RFQ, MEBT, D-Plate and LPBD for LIPAc with 8 coaxial high-power transmission lines and RF power system was just done in 2017 at Rokkasho, Japan. After that, the RF conditioning of RFQ for beam commissioning is underway. The beam commissioning of RFQ with H+/D+ and the acceleration demonstration up to 5 MeV-125 mA-0.1% duty cycle with D+ will be done.  
slides icon Slides THP1WB01 [13.177 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP1WB01  
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THA1WE04 ESS nBLM: Beam Loss Monitors based on Fast Neutron Detection 404
 
  • T. Papaevangelou
    CEA/IRFU, Gif-sur-Yvette, France
  • H. Alves, S. Aune, J. Beltramelli, Q. Bertrand, T. Bey, B. Bolzon, N. Chauvin, M. Combet, D. Desforge, M. Desmons, Y. Gauthier, E. Giner-Demange, A. Gomes, F. Gougnaud, F. Harrault, F. J. Iguaz Gutierrez, T.J. Joannem, M. Kebbiri, C. Lahonde-Hamdoun, P. Le Bourlout, Ph. Legou, O. Maillard, A. Marcel, C. Marchand, Y. Mariette, J. Marroncle, V. Nadot, M. Oublaid, G. Perreu, O. Piquet, B. Pottin, Y. Sauce, J. Schwindling, L. Segui, F. Senée, R. Touzery, G. Tsiledakis, O. Tuske, D. Uriot
    IRFU, CEA, University Paris-Saclay, Gif-sur-Yvette, France
  • I. Dolenc Kittelmann, R.J. Hall-Wilton, C. Höglund, L. Robinson, T.J. Shea, P. Svensson
    ESS, Lund, Sweden
  • V. Gressier
    IRSN, Saint-Paul-Lez-Durance, France
  • K. Nikolopoulos
    Birmingham University, Birmingham, United Kingdom
  • M. Pomorski
    CEA/DRT/LIST, Gif-sur-Yvette Cedex, France
 
  A new type of Beam Loss Monitor (BLM) system is being developed for use in the European Spallation Source (ESS) linac, primarily aiming to cover the low energy part (proton energies between 3-100 MeV). In this region of the linac, typical BLM detectors based on charged particle detection (i.e. Ionization Cham-bers) are not appropriate because the expected particle fields will be dominated by neutrons and photons. Another issue is the photon background due to the RF cavities, which is mainly due to field emission from the electrons from the cavity walls, resulting in brems-strahlung photons. The idea for the ESS neutron sensi-tive BLM system (ESS nBLM) is to use Micromegas detectors specially designed to be sensitive to fast neutrons and insensitive to low energy photons (X and gammas). In addition, the detectors must be insensitive to thermal neutrons, because those neutrons may not be directly correlated to beam losses. The appropriate configuration of the Micromegas operating conditions will allow excellent timing, intrinsic photon back-ground suppression and individual neutron counting, extending thus the dynamic range to very low particle fluxes.  
slides icon Slides THA1WE04 [3.267 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THA1WE04  
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