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MOP062 Linac followed by an Electron Cooler to Provide a Short Bunch Proton Beam proton, linac, electron, beam-cooling 196
 
  • A. Noda, H. Souda, H. Tongu
    Kyoto ICR, Uji, Kyoto
  • T. Fujimoto, S.I. Iwata, S. Shibuya
    AEC, Chiba
  • K. Noda, T. Shirai
    NIRS, Chiba-shi
  
 

Proton beams accelerated by an RFQ and a DTL with resonant frequency of 433 MHz,are electron cooled after injection into a storage ring, S-LSR and fast extracted to a beam irradiation target. Short pulse duration around 3.5 ns is expected for the 7 MeV proton beam with the intensity of 1.4 x 108 [1]. This beam is to be utilized for irradiation of biological cells in order to investigate Radio Biological Effectiveness of proton beam with a very high peak intensity for the purpose of quantitative verification of the recent report on the DNA double strand breaking with the use of short-pulse laser-produced proton beam [2]


[1] T. Fujimoto et al., Nucl. Instr. and Meth. Phys. Res. A588 (2008) 330-335.
[2] A. Yogo et al., Appl. Phys. Lett. 94 (2009) 181502.

  
THP115 The Development of the H- Ion Source Test Stand for CSNS ion, ion-source, power-supply, controls 1007
 
  • H.F. Ouyang, Y.L. Chi, W. He, T. Huang, G. Li, Y.M. Liu, Y.H. Lu, X.B. Wu, T.G. Xu, H.S. Zhang, J. S. Zhang, F.X. Zhao
    IHEP Beijing, Beijing
  • D.C. Faircloth
    STFC/RAL, Chilton, Didcot, Oxon
  
 

The type of the H- ion source foe CSNS is a Penning Surface Plasma Source (SPS). The output energy of the source is 50keV and the pulsed current of H- beam is 20mA with a rms. emittance of 0.2π mm.mrad. The construction of H- ion source test stand for CSNS is finished and commissioning of the source is being done. Up to now, stable H- ion beam with a current up to 45mA and energy of 50keV is achieved. Emittance measurements of the beam is also being prepared.

  
THP116 Tests of the Versatile Ion Source (VIS) for High Power Proton Beam Production emittance, plasma, proton, permanent-magnet 1010
 
  • S. Gammino, G. Castro, L. Celona, G. Ciavola, D. Mascali, R. Miracoli
    INFN/LNS, Catania
  • G. Adroit, O. Delferrière, R. Gobin, F. Senée
    CEA, Gif-sur-Yvette
  • F. Maimone
    GSI, Darmstadt
  
 

The sources adapted to beam production for high power proton accelerators must obey to the request of high brightness, stability and reliability. The Versatile Ion Source (VIS) is based on permanent magnets (maximum value around 0.1 T on the chamber axis) producing an off-resonance microwave discharge. It operates up to 80 kV without a bulky high voltage platform, producing several tens of mA of proton beams and monocharged ions. The microwave injection system and the extraction electrodes geometry have been designed in order to optimize the beam brightness. Moreover, the VIS source ensures long time operations without maintenance and high reliability in order to fulfil the requirements of the future accelerators. A description of the main components and of the source performances will be given. A brief summary of the possible options for next developments of the project will be also presented, particularly for pulsed mode operations, that are relevant for future projects.