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Characterization of...
Characterization of HPGe detectors using Computed Tomography
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- Hedman, Angelica, 1984- (författare)
- Umeå universitet,Radiofysik,Swedish Defence Research Agency, Division of CBRN Defence and Security, SE-90182 Umeå, Sweden
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- Gogani, J. B. (författare)
- Totalförsvarets forskningsinstitut (FOI),Swedish Defence Research Agency (FOI),Swedish Defence Research Agency, Division of CBRN Defence and Security, SE-90182 Umeå, Sweden
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- Granstrom, M. (författare)
- Totalförsvarets forskningsinstitut (FOI),Swedish Defence Research Agency (FOI),Swedish Defence Research Agency, Division of CBRN Defence and Security, SE-90182 Umeå, Sweden
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- Johansson, Lennart (författare)
- Umeå universitet,Radiofysik
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- Andersson, Jonas S. (författare)
- Umeå universitet,Institutionen för strålningsvetenskaper
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- Ramebäck, Henrik, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Swedish Defence Research Agency, Division of CBRN Defence and Security, SE-90182 Umeå, Sweden; Chalmers University of Technology, Department of Chemical and Biological Engineering, Nuclear Chemistry, SE-41296 Göteborg, Sweden
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(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- Engelska.
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Ingår i: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 785, s. 21-25
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Computed Tomography (CT) high resolution imaging have been used to investigate if there is a significant change in the crystal-to-window distance, i.e. the air gap thickness, in a small n-type detector cooled to 77 K, and in a medium sized p-type HPGe detector when cooled to 100 K. The findings were compared to detector dimension data made available by the manufacturer. The air gap thickness increased by (0.38 +/- 0.07) mm for the n-type detector and by (0.40 +/- 0.15) mm for the p-type detector when the detectors were cooled to 77 resp. 100 K compared to at room temperature. Monte Carlo calculations indicate that these differences have a significant impact on the efficiency in close geometries (
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk bildbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Image Processing (hsv//eng)
Nyckelord
- Semi-empirical calibration
- Monte Carlo modelling
- Gamma spectrometry
- Gespecor
- Computed Tomography
- HPGe
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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