Radiation Resistance Investigation of Diagnostic System Component

Induced absorption of the visible radiation in some optical materials (sapphire, quartz and cerium glasses) were investigated in first preliminary experiments under relatively low neutron fluences (up to 5 × 10E16 n/cm2) and gamma doses (up to 8 MGy). It was shown that the induced absorption depends on the doze rate and under the neutron irradiation it was almost the same at the fluence of 10E14 of neutrons with an energy of En near to 14 MeV (at neutron generator) and at the fluence of 5 × 10E15 of neutrons with E > 0.1 MeV (at nuclear reactor). Simulative testing of metal mirror under bombardment by ions with an energy of 1 and 3 MeV shows that degradation of their reflectivity in the neutron field was insignificant. X-ray crystals (different types of the quartz, Si, Ge, graphite and some organic crystals) were irradiated in nuclear reactor BOR-60 up to neutron fluence of 2 × 10E19 n/cm2. Unexpectedly the dependence of some quartz cuts reflectivity of neutron fluence prove to be unmonotonous.