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TUAO01 The Proton Source for the European Spallation Source (PS-ESS): Installation and Commissioning at INFN-LNS ion, plasma, proton, injection 39
 
  • L. Celona, L. Allegra, A. Amato, G. Calabrese, A.C. Caruso, G. Castro, F. Chines, G. Gallo, S. Gammino, O. Leonardi, A. Longhitano, G. Manno, S. Marletta, D. Mascali, A. Massara, A. Maugeri, M. Mazzaglia, L. Neri, S. Passarello, G. Pastore, A. Seminara, A. Spartà, G. Torrisi, S. Vinciguerra
    INFN/LNS, Catania, Italy
  • S. Di Martino, P. Nicotra
    Si.A.Tel SRL, Catania, Italy
 
  A 2.45 GHz ' 0.1 T microwave discharge Proton Source has been designed and assembled at INFN-LNS for the European Spallation Source (PS-ESS) in order to produce pulsed beams of protons up to 74 mA nominal current, at 75 keV of energy, with a transverse emittance containing 99 % of the nominal proton current below 2.25 π mm mrad and a beam stability of ± 2 %. The challenging performances of the machine have triggered specific studies on the maximization of the proton fraction inside the plasma and of the overall plasma density, including dedicated modelling of the wave-to-plasma interaction and ionization processes. The plasma conditioning phase started in July and excellent RF to plasma coupling, more than 99.5% is evident since the beginning. Reflected power fluctuation less than 0.05 % was measured providing a great starting point to reach the beam stability requested by the ESS accelerator.  
slides icon Slides TUAO01 [14.571 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-TUAO01  
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TUAO05 First Plasma of the PHOENIX V3 ECR Ion Source ion, plasma, ECR, injection 48
 
  • T. Thuillier, J. Angot, L. Bonny, J. Jacob, T. Lamy, P. Sole
    LPSC, Grenoble Cedex, France
  • J.L. Flambard, L. Maunoury
    GANIL, Caen, France
  • T. Kalvas
    JYFL, Jyväskylä, Finland
  • C. Peaucelle
    IN2P3 IPNL, Villeurbanne, France
 
  Funding: This project was partially funded by the EU Grant Agreement 283745.
PHOENIX V3 is an upgrade of the PHOENIX V2 ECR ion source granted by the European CRISP project. This new ECRIS features a larger plasma chamber and a re-duced vacuum pressure under operation. The V3 source will replace the V2 one on the SPIRAL2 accelerator in 2018. The first plasma of PHOENIX V3 was achieved on May 9th 2016. The early commissioning of the V3 source at low 18 GHz power demonstrates as expected an en-hancement of the high charge state production and Ar14+ intensity already exceeds the V2 one. Further enhance-ments are expected the outgassing will be achieved and the full RF power will be injected in the source.
 
slides icon Slides TUAO05 [7.050 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-TUAO05  
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WECO01 Intermediate Commissioning Results of the Required 140 mA/100 keV CW D+ ECR Injector of LIPAc, IFMIF's Prototype ion, emittance, rfq, plasma 67
 
  • B. Bolzon, N. Chauvin, R. Gobin, F. Senée
    CEA/IRFU, Gif-sur-Yvette, France
  • P.-Y. Beauvais, H. Dzitko
    F4E, Germany
  • L. Bellan, M. Comunian, E. Fagotti, A. Pisent
    INFN/LNL, Legnaro (PD), Italy
  • L. Bellan
    Univ. degli Studi di Padova, Padova, Italy
  • P. Cara, R. Heidinger
    Fusion for Energy, Garching, Germany
  • F. Harrault
    CEA/DSM/IRFU, France
  • R. Ichimiya, A. Ihara, A. Kasugai, T. Kitano, M. Komata, K. Kondo, K. Sakamoto, T. Shinya, M. Sugimoto
    QST, Aomori, Japan
  • J. Knaster, A. Marqueta, K. Nishiyama, Y. Okumura, G. Pruneri, F. Scantamburlo
    IFMIF/EVEDA, Rokkasho, Japan
 
  The LIPAc accelerator aims to operate in Rokkasho Fusion Institute a 125 mA/CW deuteron beam at 9 MeV to validate the concept of IFMIF's accelerators that will operate in CW 125 mA at 40 MeV. The 2.45 GHz ECR injector developed by CEA-Saclay is designed to deliver 140 mA/100 keV CW D+ beam with 99% D+ fraction ratio. Its LEBT relies on a dual solenoid focusing system to transport and match the beam into the RFQ. The normalized RMS emittance at the RFQ injection cone is required to be within 0.25π mm·mrad to allow 96% transmission through the 9.81 m long RFQ. An equal perveance H+ beam of half current and half energy as nominal with D+ is used to avoid activation during commissioning. The injector commissioning at Rokkasho is divided into three phases to characterize the emittance between the two solenoids of the LEBT (A1) and just downstream the RFQ injection cone (A2) and the extraction system of the source (A3). Phase A1 has been achieved and phase A2 continues in 2016 in order to reach the required beam parameters and to match the beam into the RFQ. This paper reports the commissioning results of phase A1 and the intermediate ones of phase A2 for H+ and D+ beams.  
slides icon Slides WECO01 [4.783 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WECO01  
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WEPP15 Design, Construction and Commissioning of the New Superconducting Ion Source AISHa ion, plasma, ECR, injection 109
 
  • L. Celona, G. Castro, F. Chines, G. Ciavola, G. Costa, S. Gammino, O. Leonardi, S. Marletta, D. Mascali, F. Noto, G. Pastore, G. Torrisi, S. Vinciguerra
    INFN/LNS, Catania, Italy
 
  At INFN-LNS a new superconducting ECRIS named AISHa has been designed with the aim to provide highly charged ion beams with low ripple, high stability and high reproducibility, also fulfilling the needs of hospital installations (e.g. L-He free, easy to use, etc.). It is a hybrid ion source based on a permanent magnet hexapole providing 1.3 T on plasma chamber walls, and four superconducting coils for the axial trapping. The axial magnetic system is very flexible in order to minimize the hot electron component and to optimize the ECR heating by controlling the field gradients and the resonance length. The design of the hexapole aimed to minimize the demagnetization due to SC coils. The magnetic system measurement confirmed the effectiveness of the adopted solutions. Innovative solutions have been also implemented as it concerns the RF system design. It will permit to operate in single/double frequency mode, supported by variable frequency high power klystron generators, thus exploiting at the same time the FTE Frequency Tuning Effect and the Two Frequency Heating. The source has been assembled at the INFN-LNS site and the commissioning phase already started.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP15  
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