Author: Guo, Z.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.