Author: Guo, X.H.
Paper Title Page
MOPC028 Beam Acceleration of DPIS RFQ at IMP 128
 
  • Z.L. Zhang, X.H. Guo, Y. He, Y. Liu, S. Sha, A. Shi, L.P. Sun, H.W. Zhao
    IMP, Lanzhou, People's Republic of China
  • R.A. Jameson, A. Schempp
    IAP, Frankfurt am Main, Germany
  • M. Okamura
    BNL, Upton, Long Island, New York, USA
 
  Beam test of the direct plasma injection scheme (DPIS) is carried out successfully for the first time in China, by setting up a comprehensive test and research platform of RFQ and laser ion source. The C6+ beam is accelerated successfully, and the peak beam current reaches more than 6mA which is measured by a Faraday cup of unique structure. The RF power coupled into the RFQ cavity is also examined, and results reveal that it is the RF power of about 195kW that can produce the peak beam current.  
 
TUPS090 Operation Status of SECRAL at IMP 1750
 
  • W. Lu, Y. Cao
    Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China
  • Y.C. Feng, X.H. Guo, W. Lu, L.T. Sun, D. Xie, X.Z. Zhang, H.W. Zhao
    IMP, Lanzhou, People's Republic of China
 
  SECRAL (Superconducting ECR ion source with Advanced design in Lanzhou) is a fully superconducting ECR ion source built in 2005 with an innovative solenoid-inside-sextupole structure. Since then it has delivered many highly-charged ion beams for HIRFL (Heavy Ion Research Facility in Lanzhou) at IMP (Institute of Modern Physics), such as Xe27+,Kr19+,Bi36+ and Ni19+, and its on-line operating time increases year by year. By January 2011, the operation time of SECRAL has totaled up to 5700 hours. The increasing demand for intensive highly-charged ion beams has lead to the continuous enhancement of the SECRAL. To meet the requirement for stable highly-charged metallic ion beams, double-frequency of 18 GHz + 24 GHz heating with an off-axis oven had been carried out in 2010. 60-80 euA of Bi36+ were produced at microwave power of about 2 kW and had been delivered continuously to HIRFL for about 10 days without any breakdowns. A number of improvements were planned to further improve the long-term stability of metallic ion beams.