Fiber bundles will be subjected to gamma-neutron irradiation in ITER Port Interspace & Cell areas, and the highest radiation dose will be accumulated in their head parts (collectors). Radiation tests have to be done to prove their radiation hardness. The paper is devoted to the radiation test of the fiber-optic collector prototypes at Co-60 gamma source. The collectors were manufactured using Epo-Tek 353ND optical glue, which is intended for a long-term use at temperatures up to 300 °C (decay temperature 412 °C). The irradiation was performed in the Kurchatov Institute in the continuous mode of the Co-60 gamma source. The aim of the tests was to investigate the influence of gamma-irradiation on the samples’ transparency and integrity. The test results showed that the fiber collector prototype based on silica fibers and EPO-Tek 353ND epoxy has a sufficient radiation resistance after the irradiation up to dose of a few kGy.

纤维束将在国际热核实验堆（ITER）的端口间隙和隔室区域中受到伽马中子照射，并且最高的辐射剂量将累积在其头部（收集器）中。必须进行辐射测试以证明其辐射硬度。该论文专门针对Co-60伽玛射线源的光纤收集器原型进行辐射测试。收集器是使用Epo-Tek 353ND光学胶制造​​的，可在高达300°C（衰减温度412°C）的温度下长期使用。辐射是在库尔恰托夫研究所以Co-60γ射线源的连续模式进行的。测试的目的是研究伽马射线辐照对样品透明度和完整性的影响。