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Title: Design of intergrated radiation detectors with a-Si photodiodes on ceramic scintillators for use in x-ray computed tomography

Design of intergrated radiation detectors with a-Si photodiodes on ceramic scintillators for use in x-ray computed tomography An integrated radiation detector with a-Si photodiodes on ceramic scintillators is designed for use in x-ray computed tomography. The output signal is estimated using Monte Carlo simulation. Results show that this detector has higher sensitivity than a c-Si photodiode/scintillator detector when a transparent layer between the scintillator and the thin film semiconductor is optimized. The noise characteristic is also considered when an integrated detector is coupled with an operational amplifier. Good agreement is shown between predicted and measured parameters.
Authors: ; ; ;
Publication Date:
OSTI Identifier:6609552
Resource Type:Journal Article
Data Type:
Resource Relation:Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA); Journal Volume: 37:3
Country of Publication:United States
Language:English
Subject: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 07 ISOTOPES AND RADIATION SOURCES; 42 ENGINEERING; 36 MATERIALS SCIENCE; CERAMICS; SCINTILLATOR-PHOTODIODE DETECTORS; INTEGRATED CIRCUITS; COMPUTERIZED TOMOGRAPHY; DESIGN; INDUSTRIAL RADIOGRAPHY; MONTE CARLO METHOD; NOISE; PULSE AMPLIFIERS; SILICON; X RADIATION; AMPLIFIERS; DIAGNOSTIC TECHNIQUES; ELECTROMAGNETIC RADIATION; ELECTRONIC CIRCUITS; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; IONIZING RADIATIONS; MEASURING INSTRUMENTS; MICROELECTRONIC CIRCUITS; RADIATION DETECTORS; RADIATIONS; SCINTILLATION COUNTERS; SEMIMETALS; TOMOGRAPHY 440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments; 070204 -- Radiation Sources-- Industrial Uses, Radiometric; 426000 -- Engineering-- Components, Electron Devices & Circuits-- (1990-); 360204 -- Ceramics, Cermets, & Refractories-- Physical Properties