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Geometrical optimis...
Geometrical optimisation of a segmented HPGe detector for spectroscopic gamma emission tomography : A simulation study
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- Rathore, Vikram (author)
- Uppsala universitet,Tillämpad kärnfysik,Fission Diagnostics and Safeguards
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- Senis, Lorenzo (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Andersson Sundén, Erik (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Jansson, Peter, 1971- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Håkansson, Ane, 1959- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Andersson, Peter, 1981- (author)
- Uppsala universitet,Tillämpad kärnfysik
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(creator_code:org_t)
- Elsevier, 2021
- 2021
- English.
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In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier. - 0168-9002 .- 1872-9576. ; 998
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Abstract
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- Segmented coaxial HPGe (High Purity Germanium) detectors have recently been shown to be feasible for Gamma Emission Tomography (GET). This type of detector allows for a combination of high efficiency and high energy resolution in gamma spectrometry of irradiated nuclear fuel. The ultimate aim of developing segmented HPGe for GET measurements is to achieve a high spatial resolution to facilitate imaging of rod-internal features and interrogation of smaller irradiated fuel samples.In this work, we present the optimisation of a segmented HPGe detector through a simulation study using the Monte Carlo particle transport code MCNP. Constraints to each dimension of the detector were identified, from manufacturing limitations and requirements arising from the use of a finite-sized collimator slit. In particular, a relationship between the minimum inner radius of the coaxial detector and the segments azimuthal dimension was derived based on the identified constraints. Segment azimuthal and radial dimensions have been varied (based on the derived relationship between the azimuthal and radial dimension) and the full energy efficiency and misidentification rate were evaluated to obtain the optimal dimensions. The optimal ranges of the segment dimensions were determined.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Gamma emission tomography
- Segmented HPGe
- Gamma spectroscopy
- Post-irradiation examination
- MCNP
- Applied Nuclear Physics
- Tillämpad kärnfysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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