Small prototype of Anger camera with submillimeter position resolution

Journal Article · Fri Apr 01 04:00:00 EST 2005 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1891485· OSTI ID:20646480

Fiorini, Carlo; Perotti, Francesco ^[1]; di Milano, INFN Sezione ^[2]

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1. Dipartimento di Elettronica e Informazione, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan 20133 (Italy)
2. Italy

In this work we present a small prototype of Anger camera based on a monolithic array of silicon drift detectors (SDDs) used as photodetectors for a single CsI(Tl) scintillator crystal. This prototype, having a total sensitive area of about 1 cm{sup 2}, has been realized in order to evaluate the performances attainable in {gamma}-ray imaging by using a SDD array instead of the more conventionally employed photomultiplier tubes. An intrinsic resolution better than 200 {mu}m has been measured with this camera. This result was achieved thanks to the extremely low electronics noise presented by the SDD units, fully exploited by the integration of the front-end junction field effect transistor directly on the detector chip. The main features of the detector as well as the results of its extended experimental characterization with 60 and 122 keV gamma rays are presented and discussed in the article. The present device has many potential applications in the field of medical imaging, in which outstanding position resolutions are essential.

• OSTI ID: 20646480
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 4 Vol. 76; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CAMERAS
CRYSTALS
FIELD EFFECT TRANSISTORS
GAMMA DETECTION
NOISE
PERFORMANCE
PHOTODETECTORS
PHOTOMULTIPLIERS
SCINTILLATION COUNTERS
SI SEMICONDUCTOR DETECTORS
SILICON
SPATIAL RESOLUTION