Single Crystal Diamond (sCD) are candidate neutron detectors for the ITER Radial Neutron Camera (RNC) due to their capability of performing both neutron counting and spectroscopy while withstanding high levels of radiation. This paper presents a study on methods of separation between neutron and gamma events, through the analysis of the pulse shapes of a $500\mathrm{\mu }\mathrm{m}$ thick sCD. Methods for gamma rejection may be beneficial especially during ITER deuterium–deuterium operation to extract the 2.5 MeV neutron signal. Four neutron/gamma separation algorithms for sCD neutron detectors are presented. Three algorithms rely on pulses shape information and one on the frequency analysis. The final experimental implementation based on multi-step separation approach achieved above 90% of correctly discriminated pulses.

单晶金刚石（sCD）是ITER放射状中子相机（RNC）的候选中子探测器，因为它们能够执行中子计数和光谱分析，同时还能承受高水平的辐射。本文通过分析原子的脉冲形状，对中子与伽马事件之间的分离方法进行了研究。$500\mathrm{\mu }\mathrm{米}$厚sCD。伽马抑制方法可能是有益的，尤其是在ITER氘-氘操作中提取2.5 MeV中子信号的过程中。提出了用于sCD中子探测器的四种中子/伽马分离算法。三种算法依赖于脉冲形状信息，一种依赖于频率分析。基于多步分离方法的最终实验实现方式可正确识别脉冲的90％以上。