Experimental study on the performance of a THGEM detector for X-rays

Edalatkhah, Elham; Sheibani, Shahab

doi:10.22034/rpe.2023.400414.1141

Document Type : Research Article

Authors

Radiation Applications Research School, Nuclear Science and Technology Research Institute, 14155-1339, Tehran, Iran

https://doi.org/10.22034/rpe.2023.400414.1141

Abstract

By expanding the applications of GEM detectors, a newer pattern of such detectors was introduced in 2004, named THGEM detectors. In this work, a sample of an X-ray detector was designed and constructed using 2cm×2cm THGEMs domestically produced with a thickness of 250 μm, a hole diameter of 300 μm and a pitch of 500 μm, for the first time. The triple THGEM detector working in Ar/CO₂ gas mixture was characterized. Influence of gas pressure and gas mixture on gain of the detector was investigated. Results show the detector operated in a stable mode with no discharges. The gain of the detector increased with high voltage across the THGEM electrodes exponentially. This verified the performance of a detector as a proportional counter. Also, the detector’s gain is maximum at Ar/CO₂ (80/20) gas mixture and voltage of 700 V applied to each multiplier. The detector is promising for localization applications such as particle physics experiments.

Highlights

Introducing a new structure THGEM detector.
Cascading three domestically produced THGEMs for gain increase and stable operation.
Characterization of the X-ray detector working in Ar/CO₂mixtures at different pressures.
High gain accessibility of 10⁶ for Ar/CO₂(80/20) mixture.

Keywords

20.1001.1.26456397.2023.4.4.7.7

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Experimental study on the performance of a THGEM detector for X-rays

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Volume 4, Issue 4October 2023Pages 51-55

Volume 4, Issue 4
October 2023
Pages 51-55