A fast correction method of the scattering contributions in the area gamma dosemeter calibration field
Author:
Qian Yi-kun1ORCID,
Zhang Song1,
Mao Ben-jiang1,
Liu Yi-xin1
Affiliation:
1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621999 , China
Abstract
Abstract
In the calibration procedure of area gamma dosemeters, how to accurately evaluate and correct the scattering contribution from the complex environmental factors to the point of test is the key problem to ensure the calibration accuracy. This paper proposed a fast correction method of the scattering contributions in the area gamma dosemeter calibration field. First, Monte Carlo method is employed to simulate the influence of scattering caused by different environmental factors in the calibration field, which is named as semi-panoramic reference radiation field. Then, a prediction model of the relationship between environmental factors and environmental scattering contribution is constructed based on the simulation data through the least squares support vector machine. With the model, the scattering contribution from the environmental factors can be fast estimated to correct the calibration results of the area gamma dosemeters, which will improve the accuracy of the calibration.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Publisher
Oxford University Press (OUP)
Reference26 articles.
1. ISO4037-1, X and gamma reference radiation for calibration dosimeters and dose rate meters and for determining their response as a function of photon energy: I. Radiation characteristics and production methods,2019