이동형 산업용 단층측정 장치를 위한 감마선 검출시스템 개발
Development of Measurement System for Industrial Transportable Gamma Ray CT
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This paper introduces a gamma-ray measurement system for a transportable tomographywhich is applicable for an industrial process diagnosis. The gamma-ray measurementsystem consists of pulse mode operating 72 channel CsI detectors, main AMP-pulse shaper, singlechannel analyzer, counter and control PC. The CsI crystal is coupled with a PIN diode which isconnected to an amplifier and pulse shaper. For a compact design, the amplifier and pulse shapingcircuit are included in a single package. 36 sets of CsI detectors are connected to a multi-channelcounter through single channel analyzers. A computer controls and collects data from two multichannelcounters. This configuration results in 72 channel counting system in total. The CT rotatorand radiation measurement system are controlled by a PC with LabVIEW program. Tomographicdata were measured for a phantom by the measurement system and transportable gamma-rayCT. From the experimental data image reconstructions were performed by ML-EM algorithm. The result showed that the CsI detector system can be a suitable component for transportablegamma-ray CT system.
Abstract
This paper introduces a gamma-ray measurement system for a transportable tomographywhich is applicable for an industrial process diagnosis. The gamma-ray measurementsystem consists of pulse mode operating 72 channel CsI detectors, main AMP-pulse shaper, singlechannel analyzer, counter and control PC. The CsI crystal is coupled with a PIN diode which isconnected to an amplifier and pulse shaper. For a compact design, the amplifier and pulse shapingcircuit are included in a single package. 36 sets of CsI detectors are connected to a multi-channelcounter through single channel analyzers. A computer controls and collects data from two multichannelcounters. This configuration results in 72 channel counting system in total. The CT rotatorand radiation measurement system are controlled by a PC with LabVIEW program. Tomographicdata were measured for a phantom by the measurement system and transportable gamma-rayCT. From the experimental data image reconstructions were performed by ML-EM algorithm. The result showed that the CsI detector system can be a suitable component for transportablegamma-ray CT system.
참고문헌 (16)
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