Single crystal diamond (SCD) detector is considered a candidate for the upgrade of Forward Calorimeter (FCal) in the foreseen HL-LHC. In order to investigate their radiation hardness, two SCD detectors were irradiated with 100 MeV protons up to the fluence of 1.6 × 10¹⁷ protons/cm² and their response current was measured continuously. At the end of the irradiation period, the diamond detector could still maintain function and its residual signal reduced to 5% of the initial value approximately. The maximum response current of diamond detectors exceeded one milliampere under the irradiation of one-microampere proton current. In addition, a statistical theory is presented in an attempt to obtain the best fitting curve of the response of diamond detectors.

单晶金刚石（SCD）检测器被认为是可预见的HL-LHC中正向量热仪（FCal）升级的候选产品。为了研究其辐射硬度，用100 MeV质子辐照了两个SCD检测器，其通量达1.6×10 ¹⁷质子/ cm ^2，并连续测量了它们的响应电流。在辐照期结束时，钻石探测器仍然可以保持功能，其残留信号大约减少到初始值的5％。在1微安的质子电流的照射下，金刚石探测器的最大响应电流超过1毫安。此外，提出了一种统计理论，试图获得最佳的钻石探测器响应曲线。