Characterisation of a single photon counting pixel detector

被引:7
作者
Passmore, MS [1 ]
Bates, R
Mathieson, K
O'Shea, V
Rahman, M
Seller, P
Smith, KM
机构
[1] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[2] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
关键词
detector; X-ray; MTF; spatial resolution; Poisson noise; photon-counting; pixel;
D O I
10.1016/S0168-9002(01)00846-4
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The Large Area Detector is a photon counting detector based on pixel readout ASICs with 64 x 64 arrays of 150 mum square pixels bump bonded to a 300 mum thick Si detector. It is designed for X-ray diffraction studies and is capable of up to 1 MHz count rate per pixel. A prototype has been tested at the synchrotron radiation source in Daresbury in a 19.5 keV X-ray beam. This paper focuses on the spatial resolution and noise performance. The calculation of modulation transfer functions leads to analytical formulae allowing the determination of the theoretical spatial resolution. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:202 / 208
页数:7
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