X-ray and UV imaging with multi-GEM/MHSP gaseous detectors

• Author(s): J.M. Maia ; A. Breskin ; R. Chechik ; J.F.C.A. Veloso ; J.M.F. dos Santos
• Date: 2012
• Origin: Electrónica e Telecomunicações
• Subject(s): X-ray; UV imaging; GEMs detectors; MHSP detectors; imaging system; X-ray; UV imaging; GEMs detectors; MHSP detectors; imaging system
• Document Type: Conference Object
• Language: English

Description

We present the recent results regarding the application of cascades of GEMs and a MHSP in the detection and imaging of X-rays and UV-photons. The imaging system tested consisted in a micropattern gas detector based in multi-GEM or multi-GEM/MHSP electron multipliers, a 20´20 mm2 Wedge & Strip (W&S) readout electrode with 1.6 mm pitch positioned below and at close distance of a resistive electrode, and a position enconding electronics with a DAQ system. Spatial resolutions in the x and y coordinates lower than ~100 mm RMS, were measured in Ar/5%CH4 gas mixture at atmospheric pressure. We present the recent results regarding the application of cascades of GEMs and a MHSP in the detection and imaging of X-rays and UV-photons. The imaging system tested consisted in a micropattern gas detector based in multi-GEM or multi-GEM/MHSP electron multipliers, a 20´20 mm2 Wedge & Strip (W&S) readout electrode with 1.6 mm pitch positioned below and at close distance of a resistive electrode, and a position enconding electronics with a DAQ system. Spatial resolutions in the x and y coordinates lower than ~100 mm RMS, were measured in Ar/5%CH4 gas mixture at atmospheric pressure.