Nuclear Techniques ›› 2014, Vol. 37 ›› Issue (02): 20204-020204.doi: 10.11889/j.0253-3219.2014.hjs.37.020204

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Physics design of heavy-ion irradiation beam line on HI-13 tandem accelerator

ZHU Fei1 PENG Zhaohua1 HU Yueming1 JIAO Xuesheng1 CHEN Dongfeng1 CAO Yali2   

  1. 1(Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China) 2(Nuclear and Radiation Safety Center, Ministry of Environmental Protection of China, Beijing 100082, China)
  • Received:2013-11-11 Revised:2013-12-03 Online:2014-02-10 Published:2014-02-19

Abstract:

Background: Heavy-ion microporous membrane is a new kind of filter material, which has prosperous application in the fields of medical and biological agents, electronic, food, environmental science, materials science, etc. Purpose: Polyester membranes were irradiated with 32S produced by HI-13 tandem accelerator to develop a microporous membrane at CIAE, and the irradiation uniformity is determined by the beam distribution, also the microporous uniformity is required higher than 90%. Methods: An octupole magnet was used to correct the beam distribution from Gauss to uniform. Meanwhile, main parameters of beam line were given, and the alignment tolerances for optical elements were also analyzed. Results: Alignment tolerance of the optical elements could cause great influence on the beam center deviation in the process of correction, which would destroy the irradiation uniformity. Steering magnet was applied to meet with the design requirements. Conclusion: This study provides a practical and feasible way for industrial production of heavy-ion microporous membrane.

Key words: Microporous membrane, Octupole magnet, Beam uniformity