The simulation calibration technology of disk source for standard source efficiency of HPGe detector

Standard surface source was used to simulate the layer of different height in the standard source. The detection efficiency of (75 mm×25 mm²⁴¹Am standard source and its gaseous source can be obtained by integration, the simulation calibration results are consistent with the calculation efficiency value of LabSOCS in 7%. The disk source experiments are also completed by LabSOCS efficiency calculation software, The detection efficiency of (75 mm×25 mm¹³³Xe gaseous source and ¹³⁷Cs liquid source, the simulation calibration results are consistent with the calculated efficiency value by LabSOCS within 1%. Therefore, the simulation calibration technology of disk source is identified to be correct and effective. Comparing with the calibration technology of standard source, less sources are required and the time spent can be much reduced, which will improve the work efficiency.