Author: Xu, Y.
Paper Title Page
TUPF10 A Non-Intercepting Beam Emittance Measurement Device Based on Neutral Beam Fluorescence Method at PKU 522
  • S.X. Peng, J. Chen, Z.Y. Guo, H.T. Ren, Y. Xu, J. Zhao
    PKU, Beijing, People's Republic of China
  • J.E. Chen, A.L. Zhang
    Graduate University, Chinese Academy of Sciences, Beijing, People's Republic of China
  • L.T. Sun, H.W. Zhao
    IMP, Lanzhou, People's Republic of China
  A new concept to attain ion beam emmitance through measuring the forward neutral beam without intercepting the beam transportion was proposed at PKU. The forward neutral beam produced by space charge compensation and separated from the transporting ion beam with the help of a deflecting magnetic field, carries the entire emittance information of the original particle beam and becomes a fast and non-interceptive beam diagnostic tool. This idea was tested on PKU ion source test bench and the experimental results show that the neutral beam fluorescence method is feasible. Bases on these qualification results, a formal non-intercepting emittance measurement device was designed. It is a 90 degree full-scale dipole analysis magnet combining with the classical pepper-pot technique. Test and commissioning of the device are in progress. Details of design and comnissioning results will be presented in this paper.