Detalhes do Documento

A simple X-ray position detection system based on a MHSP

Autor(es): Luz, H. Natal da cv logo 1 ; Veloso, J. F. C. A. cv logo 2 ; Santos, J. M. F. dos cv logo 3 ; Mir, J. A. cv logo 4

Data: 2007

Identificador Persistente: http://hdl.handle.net/10316/4350

Origem: Estudo Geral - Universidade de Coimbra

Assunto(s): Micro-Hole and Strip Plate; Gas Electron Multiplier; 2D imaging; Resistive charge division; Analogue divider; X-ray detectors


Descrição
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. http://www.sciencedirect.com/science/article/B6TJM-4P47GB7-4/1/4ebeb6377e7ec6cafd17bbb22153b587
Tipo de Documento Artigo
Idioma Inglês
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