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介绍了电子加速器房扩容技改的辐射屏蔽设计、计算和验证结果。技改方案包括：加速器升级（μＡ级升至ｍＡ级）；增设耳房式迷宫以安装回转式工件传送装置；在耳房内增设局部屏蔽砼块以增强屏蔽能力。在加速器运行条件下现场环境辐射水平实测结果与计算结果基本相符。
The radiation shield design, calculation and verification results of the technical upgrading of electronic accelerator room are introduced. Technical changes include: accelerator upgrade (μA level rose to mA level); the addition of auricle maze to install rotary workpiece transfer device; in the ear room to increase the local shielded concrete block to enhance the shielding capability. Under the condition of accelerator operation, the measured results of the field environment radiation basically accord with the calculation results.