Final simulation results prove that the optimized scheme can enhance the nominal electron energy, decrease the surface dose and the bremsstrahlung dose, and ameliorate the dose uniformity.

• 模拟计算结果表明：优化方案提高了加速器的标称能量，降低了表面剂量和轫致辐射剂量，使剂量均匀性得到明显改善。