Abstract
The tissue equivalent proportional counter (TEPC) is often used in the measurement of ionizing radiation. However, there are many factors that can cause the micro-dose spectrum’s distortion and affect the accuracy of the measurement. In the TEPC design process, several factors can be analyzed through simulation methods. The simulation capabilities of the TEPC physical process are established and verified in this paper. The wall material, tissue equivalent gas, and electrode are selected as the main objects, and the corresponding design choices are given. The wall material has a great impact on the spectrum, and y¯F and y¯D show that A-150 plastic is closer to the human tissue in the TEPC physical process simulation. Both the two tissue equivalent gases have good simulation accuracy. After further analysis, propane-based equivalent gas is the better choice. Among the three electrode sizes, the size of 0.006 35 cm is the most suitable one for TEPC. The analysis results and analysis methods can provide references for the important elements design of TEPC.
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