利用MCNP程序,根据IAEA提供的ADS———NEUTRONICBENCHMARK中的模型和数据,对加速器驱动的次临界系统质子束管中中子和光子泄漏产生的辐射进行了计算。通过计算与分析可知:有较大份额的中子和光子直接从质子束管中泄漏出去,且泄漏的中子和光子的能量相当高;在质子束管周围的辐射剂量有80%以上是由于质子束管中中子和光子辐射产生的,只有相当少的辐射剂量来自堆本身。 Based on the model and data of ADS --- NEUTRONICBENCHMARK provided by IAEA, the radiation generated by neutron and photon leakage in accelerator driven subcritical proton beam tube was calculated by MCNP program. Through calculation and analysis, it can be seen that a large proportion of neutrons and photons leak out directly from the proton beam tube and the energies of the leaked neutrons and photons are quite high. Over 80% of the radiation dose around the proton beam tube is due to Neutron and photon radiation in a proton beam tube produces only a small amount of radiation from the stack itself.