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.Cited