A Design Method of Radiation Detector Energy Response Compensation Sheet Based on Genetic Algorithm

Abstract

The present invention discloses a genetic algorithm based radiation detector energy response compensation sheet design method. The method comprises the following steps: firstly, defining a encoding manner according to a genetic algorithm; secondly, defining an adaptability degree; thirdly, controlling parameter setting by means of the genetic algorithm; fourthly, performing population initialization for a set related parameter; fifthly, performing adaptability-degree calculation by means of a Monte Carlo program; and finally, outputting a parameter that meets a condition according to a calculation result, and enabling a parameter that does not meet the condition to return to the step of population initialization, and performing a genetic operation again until the result meets the condition for outputting. The design method disclosed by the present invention is capable of obtaining an optimal parameter of an energy response compensation sheet, thereby solving the defect of the conventional compensation sheet.

Description

technical field [0001] The invention belongs to the field of radiation detection, and in particular relates to a design method of a radiation detector energy response compensation sheet based on a genetic algorithm. Background technique [0002] In the measurement of ionizing radiation, commonly used radiation detectors such as thermoluminescent dosimeters, gas detectors, semiconductor detectors, etc., are not tissue equivalent or air equivalent materials in the strict sense; when used for dose measurement, the detector The difference in the response to different energy rays is relatively large. For example, the difference in the response of a silicon semiconductor detector to photons in the range of 60keV to 3MeV can reach two orders of magnitude. Therefore, using a suitable method to compensate the energy response of the detector is an important aspect in the development of dose monitoring instruments. Among them, "hard compensation" is a common energy response compensati...

AI Technical Summary

Problems solved by technology

There are two problems in this design mode: first, the design process relies heavily on the experience of researchers, and the trial process is often a time-consuming and laborious work; second, the relationship between the parameters of the compensation sheet and the compensation effect is nonlinear, and The empirical selection of parameters has a certain degree of randomness, so even if the finally determined compensation conditions can meet the requirements of responsive compensation, they are not necessarily optimal solutions.

Images