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Title: A simple X-ray position detection system based on a MHSP
Authors: Luz, H. Natal da 
Veloso, J. F. C. A. 
Santos, J. M. F. dos 
Mir, J. A. 
Keywords: Micro-Hole and Strip Plate; Gas Electron Multiplier; 2D imaging; Resistive charge division; Analogue divider; X-ray detectors
Issue Date: 2007
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 580:2 (2007) 1083-1086
Abstract: A simple system for position detection based on a Micro-Hole and Strip Plate (MHSP) using a resistive charge division method was implemented. A thin resistive layer of about 100 [Omega] between each strip (top surface) and between each anode strip (bottom surface) allows us to obtain the actual position in both orthogonal directions. The readout electronics uses only two preamplifiers, a sum and a divider circuit to calculate the interaction point, in each dimension. For a detector filled with 1 atm of pure xenon, position resolutions of less than 300 [mu]m (FWHM) were achieved using 5.9 keV X-rays, for a signal-to-noise ratio (SNR) of 30. For these conditions, a detector gain of about 104 and an energy resolution of about 15% were obtained.
DOI: 10.1016/j.nima.2007.06.083
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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