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Estudo e desenvolvimento de um detector a gás utilizando dispositivos Study and development of a gas detector using Thick-GEM devices

The first results of the study performed with THGEM (Thick-Gas Electron Multiplier) devices developed in the Detection System Laboratory of the Brazilian Center for Physic Research are reported. Thinner THGEM devices of thickness 0.2 mm, with different hole diameter and pitch have been developed. Results of gain versus high voltage in double-THGEM detectors using these THGEM devices, for the gas mixtures Ar/C2H6(75/25) and Ar/CO2(70/30) at atmospheric pressure using 5.9 keV X-rays, are also presented.