Calibration of a small anode germanium well detector

SAGe kolokiteen kalibroinnit suoritettiin kolmelle näytegeometrialle. Kaksi geometrioista oli sylinterin muotoisia purkkeja, jotka mitattiin ilmaisimen päällä ja yksi koeputki, joka mitattiin kolon sisällä. Piikkitehokkuuskalibrointi tehtiin NPL:sta tilattujen sertifioitujen näytteiden avulla. Yksin...

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Main Author: Tikkanen, Joonas
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Fysiikan laitos, Department of Physics, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2017
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/54270
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author Tikkanen, Joonas
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_facet Tikkanen, Joonas Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto Tikkanen, Joonas Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_sort Tikkanen, Joonas
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description SAGe kolokiteen kalibroinnit suoritettiin kolmelle näytegeometrialle. Kaksi geometrioista oli sylinterin muotoisia purkkeja, jotka mitattiin ilmaisimen päällä ja yksi koeputki, joka mitattiin kolon sisällä. Piikkitehokkuuskalibrointi tehtiin NPL:sta tilattujen sertifioitujen näytteiden avulla. Yksinuklidinäytteitä valmistettiin radioaktiivisista liuoksista totaalitehokkuuskalibrointia varten. Totaalitehokkuuskäyrä saatiin simuloimalla totaalitehokkuudet MCNP:llä ja sovittamalla malli vastaamaan kokeellisia tuloksia. Kalibraatiot tehtiin energiavälille 30 keV–1.9 MeV. Kalibroinnit olivat tarpeeksi luotettavia, että ilmaisinta voidaan käyttää akkreditoiduissa gammaspektrometrisissä mittauksissa. Calibration of a SAGe well detector was performed for three sample geometries. Two of the geometries were cylindrical containers measured on top of the detector and one was a test tube measured inside the well. The full energy peak efficiency calibrations were done with certified samples ordered from NPL. One-nuclide samples were manufactured from radioactive solutions for the total efficiency calibration. The total efficiency calibration was done by simulating the total efficiency with MCNP and adjusting the model to match the experiments. The calibrations were done for energy range between 30 keV and 1.9 MeV. The calibrations were reliable enough for the detector to be used in accredited gamma-ray spectrometric measurements.
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spellingShingle Tikkanen, Joonas Calibration of a small anode germanium well detector SAGe well detector full energy peak efficiency calibration total efficiency calibration TCS correction Fysiikka Physics 4021
title Calibration of a small anode germanium well detector
title_full Calibration of a small anode germanium well detector
title_fullStr Calibration of a small anode germanium well detector Calibration of a small anode germanium well detector
title_full_unstemmed Calibration of a small anode germanium well detector Calibration of a small anode germanium well detector
title_short Calibration of a small anode germanium well detector
title_sort calibration of a small anode germanium well detector
title_txtP Calibration of a small anode germanium well detector
topic SAGe well detector full energy peak efficiency calibration total efficiency calibration TCS correction Fysiikka Physics 4021
topic_facet 4021 Fysiikka Physics SAGe well detector TCS correction full energy peak efficiency calibration total efficiency calibration
url https://jyx.jyu.fi/handle/123456789/54270 http://www.urn.fi/URN:NBN:fi:jyu-201706022645
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