电子加速器已被广泛用于食品保鲜、医疗用品灭菌、三废处理、材料改性等领域。相比电子束,X射线具有较强的穿透力,适合于辐照密度较高、厚度或体积较大的产品。美国食品监督局将转轫致辐射的电子束能量从5 MeV提升到7.5 MeV。本工作对7.5 MeV电子束X射线转换靶进行了设计。首先采用蒙特卡罗模拟软件FLUKA模拟计算得到了几种常用靶材料(钨、钽、铜)的 Electronic accelerator has been widely used in food preservation, medical supplies sterilization, waste treatment, material modification and other fields. Compared with the electron beam, X-ray has strong penetrating power, suitable for high irradiation density, thickness or volume of larger products. The U.S. Food and Drug Administration has upgraded the radiation-induced electron beam energy from 5 MeV to 7.5 MeV. This work designed a 7.5 MeV electron beam X-ray conversion target. First, Monte Carlo simulation software FLUKA was used to simulate and calculate several commonly used target materials (tungsten, tantalum and copper)