Akademik Veri Yönetim Sistemi
Radiation Effects and Defects in Solids, 2026 (SCI-Expanded, Scopus)
This study investigates how the geometrical structure of Resistive Plate Chambers (RPCs)–a widely used type of gas detector in high-energy physics–affects their detection performance. The main goal is to compare the photon-counting sensitivity of square and disc RPC geometries with different sizes under various gas mixtures and applied voltages. Three RPCs with different geometries were designed: two square types (10 × 10 cm² and 6.78 × 6.78 cm²) and one disc type (6.4 cm diameter). Each used 3 mm thick glass plates and had a gas gap of 2 mm. The detectors were tested with three gas mixtures: 90% Ar–10% CH4 (P10), 80% Ar–20% CH4 (P20), and 5% Ar–35% N2–60% CO2. A Cs-137 (3.73 (Formula presented.) Ci) radioactive source was employed to produce ionizing radiation. Signal measurements as a function of voltage and efficiencies were recorded. A Python-based analysis tool was developed to filter noise and evaluate true signal counts. Additionally, electric field distributions were simulated using ANSYS Maxwell software for disc and square RPCs (Inc. ANSYS Inc., ANSYS® Academic Research Mechanical, Release 2024 R1, Canonsburg, PA, USA). As a result of the experiments, the maximum signal count and efficiency were obtained with (10 × 10 cm²) square RPC. When comparing disc and square RPCs with similar surface areas, the square RPCs produced slightly greater signals than the disc-shaped RPCs.