Abstract:

Neutron measurement system should be able to provide neutron fluxes and spectra at beryllium multiplier and tritium breeder of the neutronics and ttritium production test blanket module (NT-TBM) during D-D and D-T phases in ITER. A special neutron diagnostic system has been proposed for measuring the neutron fluxes and spectra without interrupt to ITER operation. This system includes encapsulated foil activation system, micro-fission chamber detectors (MFC), and a compact neutron spectrometer as natural diamond detector (NDD).

Key words: Neutronics and tritium production-test blanket module (NT-TBM), Fission chamber detector, Encapsulated foil activation system

摘要：

根据第一壁后聚变中子通量和能谱的空间分布和ITER可能输出的聚变功率、聚变中子产额、第一壁(产氚包层)之后的中子通量的蒙塔-卡罗中子输运(MCNP)计算，对氦冷却固体增殖剂中子学和产氚包层模块（NT-TBM-HCSB）的聚变中子诊断提出概念性设计，本设计提出用固定位置微型裂变室探测器和可移动封装薄箔活化分析系统测量中子倍增器之后、固体氚增殖剂中及其后的中子通量；用可移动天然金刚石探测器的紧凑型能谱仪测量中子能谱。

关键词: 中子学和产氚试验包层模块(NT-TBM), 微裂变室探测器, 封装箔活化分析系统