【作者】 李义国； 夏普； 邹淑芸； 张永保； 朱国盛； 郑伍钦； 史永谦；

【Author】 LI Yi-guo~1,XIA Pu~1,ZOU Shu-yun~1,ZHANG Yong-bao~1,ZHU Guo-sheng~1, ZHENG Wu-qing~1,SHI Yong-qian~1,TAN Xin-jian~2 (1.China Institute of Atomic Energy,P.O.Box 275-75,Beijing 102413,China; (2.Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 102201)

【机构】 中国原子能科学研究院；

【摘要】 医院中子照射器是专门为硼中子俘获治疗提供合适中子束的核反应堆装置。其功率为30kW,采用罐-池结构,反应堆堆芯位于密闭的堆容器内,在堆芯的相对两侧分别引出热中子束流和超热中子束流用于硼中子俘获治疗(BNCT)。在热中子束流装置内引出硼浓度测量用的热中子束流(实验束流)。利用固体径迹探测器和金箔活化法分别测量了实验束流出口和入口处热中子通量密度,两者比值为132.37.与用MCNP/4B程序结算结果进行比较,两者相差小于3%。更多还原

【Abstract】 The In-Hospital Neutron Irradiator(IHNI) is specifically designed for Boron Neutron Capture Therapy(BNCT).The reactor with 30kW is an undermoderated reactor of pool-tank type,the reactor core is installed in the closed container.On the both sides of the reactor core,there are two neutron beams,one is thermal neutron beam,and the other opposite to the thermal beam,is epithermal neutron beam.A small thermal neutron beam is specially designed for the measurement of blood boron concentration by the prompt gamma neutron activation analysis(PGNAA). The ratio of neutron flux density at equipment entrance to that at the equipment exit was measured by gold foil method and solid state nuclear track detector(SSNTD),the value is 131.37.更多还原