Establishment of 60-200kV X-ray reference radiation of high air-kerma rate

At present, we have established the reference radiation with low air-kerma rate,but for the overload characteristics of some instruments, no suitable radiators have been established.Therefore, referring to the new ISO 4037-1:2019 report issued by the International Standard Organization (ISO), a reference radiation of (60-200) kV high air-kerma rate was established.The half-value layer, energy spectrum, mean energy and effective energy of the corresponding radiation are obtained by experiment and simulation., so as to verify the accuracy of the established radiation substance. The establishment of high air kerma rate radiation field provides a standard device for the measurement of some instrument overload characteristics.