• H.F. Ouyang, S. Fu, K.Y. Gong, T. Huang, J. Li, J.M. Qiao, T.G. Xu, X.A. Xu, Y. Yao, H.S. Zhang, Z.H. Zhang, F.X. Zhao
  IHEP Beijing, Beijing
• J.X. Fang, Z.Y. Guo
  PKU/IHIP, Beijing
• X. Guan
  CIAE, Beijing

A high-duty factor proton RFQ accelerator has been constructed at IHEP, Beijing for the basic study of Accelerator Driven Subcritical System. The ADS basic study is supported by a national program for nuclear waste transmutation which is regarded essential for the rapid development of nuclear power plants in China. In the initial commissioning of the 3.5MeV RFQ with an ECR ion source showed a nice performance with a transmission rate about 93% with an output beam of 46mA. The 352MHz RFQ is design for CW operation with the RF power source from LEP-II of CERN. This paper presents the beam commissioning and recent progress in high-duty factor operation from 7% to 15%.

Slides

• Y.F. Ruan
  Institute of High Energy Physics, CAS, Bejing
• S. Fu, L.X. Han, J. Peng, J.L. Sun, S. Xiao, T.G. Xu, H.S. Zhang, Y.F. Zhang
  IHEP Beijing, Beijing

A high current proton RFQ accelerator has been constructed in China for the basic study of Accelerator Driven Subcritical System. A new beam line will be set up for the 3.54MeV, 50mA proton beam from the RFQ in order to study beam halo phenomenon. Therefore, 18 wire scanners consist of a thin carbon wire and two scrapers will be installed on the beam line to traverse the entire beam cross-section. So we can experimentally study the beam loss and beam halo. Some simulations results of the heat on the devices by using finite element method software–ANSYS are presented. The electronics interface will also be discussed.