Characterisation of a single photon counting pixel detector

Authors
Passmore, MS Bates, R Mathieson, K O'Shea, V Rahman, M Seller, P Smith, KM
Citation
Ms. Passmore et al., Characterisation of a single photon counting pixel detector, NUCL INST A, 466(1), 2001, pp. 202-208
Citations number
5
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
466
Issue
1
Year of publication
2001
Pages
202 - 208
Database
ISI
SICI code
0168-9002(20010621)466:1<202:COASPC>2.0.ZU;2-T
Abstract
The Large Area Detector is a photon counting detector based on pixel readou t ASICs with 64 x 64 arrays of 150 mum square pixels bump bonded to a 300 m um thick Si detector. It is designed for X-ray diffraction studies and is c apable 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. Thi s paper focuses on the spatial resolution and noise performance. The calcul ation of modulation transfer functions leads to analytical formulae allowin g the determination of the theoretical spatial resolution. (C) 2001 Elsevie r Science B.V. All rights reserved.