Abstract
In order to provide guidance on the design and use of the Self-Powered Neutron Detector (SPND) and improve measurement accuracy, accurate simulation of SPND is required. Therefore, a complete SPND simulation package was developed, including a particle transport calculation module, an electric field calculation module, a visualization interface and a data post-processing module. Due to electric field produced by space charge in the insulator, Geant4 has been chosen as the particle transport calculation module and an iterative code for the electric field was written to implement the calculation of the electric field in the insulator. To help researchers simplify the process of writing codes, a wizard-like visual interface was developed based on QT for configuring the input files and for performing the calculations. The accuracy of the simulation package was verified by comparing it with other calculation codes. With the help of the simulation package, the user can very easily achieve an accurate simulation of the SPND.
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