Author: Wu, Q.
Paper Title Page
FR2I1
 First Intense Beam at JUNA 400 kV Underground Accelerator  
 
  • L.T. Sun, J.Q. Li, J.L. Liu, Y.G. Liu, X.D. Tang, P.P. Wang, Q. Wu, H.W. Zhao
    IMP/CAS, Lanzhou, People’s Republic of China
  • L.H. Chen, B.Q. Cui, B. Guo, J.H. Li, G. Lian, W.P. Liu
    CIAE, Beijing, People’s Republic of China
  • J.J. He
    BNU, Haidian District Beijing, People’s Republic of China
  
  Featuring about 2400 m marble overburden, Jinping Underground laboratory for Nuclear Astrophysics (JUNA) provides the optimum experimental conditions for the key reactions of nuclear astrophysics, i.e. 12C(’,’)16O, 13C(’,n)16O, 25Mg(p,’)26Al and 19F(p,’)16O. The ion beams used in the experiments are delivered by a 400 kV high voltage platform, with the designed beam intensities of 10 emA H+, 10 emA He+ and 2 emA He2+ that are produced with Electron Cyclotron Resonance (ECR) ion sources. JUNA accelerator had been successfully commissioned at underground lab and used for experimental investigations with a total operation time of more than 2,000 hours in early 2021. This paper will review the development of JUNA accelerator. High quality intense ion beam production, acceleration and transmission to the target area will be presented.  
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