高温气冷堆在线燃耗测量系统优化设计

Optimized Design of On-line Burn-up Measuring System for High Temperature Gas Cooled Reactor

为解决高温气冷堆在线燃耗测量系统工程测量上限要求,对测量系统的装置结构进行了优化设计。优化设计中,利用MCNP程序模拟了屏蔽体、准直器及多球测量对探测上限的影响,提出了一种新的探测装置优化方案。实验结果表明:该优化方案可提高屏蔽效率,能满足HPGe探测器测量上限要求。

To solve the problem of the upper limit of the radioactivity measuring requirements for the HTGR on- line burn- up measure system,the structure of the device can be further optimized. Aim to optimized system,this thesis uses MCNP to simulate shield,collimator and multi- sphere impact on the detection upper limit. Making a synthesis of simulation and actual measured results an optimizing structure is design. The result shows： this plan can enhance the shield efficiency and meet the upper limit counts for the HPGe detector.