摘要
TGS系统的平板准直对探测效率及最后的计算有很重要的影响,通过MCNP5程序建立TGS模型,考虑了核退役中几种常见的并且密度相差较大的物质(玻璃棉、木屑、水、水泥、铝合金等),放射源使用常用投射源60Co,以0.5 cm的步进距离进行模拟试验,最后根据结果得出准直器距离在3～3.5 cm时可获得相对较好的效果。
The paper use MCNP5 procedures to build the TGS device model,it studies the effect of distance be- tween the collimators to the detection efficiency by adjusting the detector front tablet, accounting several Nudear Decommissioning substances frequently encountered. The simulation uses 60 Co as the source and uses the distanee step of 0.5 cm, and the results shows that the optimal distance is 3 to 3.5 cm.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2013年第1期35-37,共3页
Nuclear Electronics & Detection Technology
