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Validation of Detai...
Validation of Detailed Geant4 Model for Thermal Neutron Scattering using the Results of Multi-Grid Detector Prototype Test at CNCS at SNS
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- Dian, Eszter (författare)
- Hungarian Acad Sci, Ctr Energy Res, POB 49, H-1525 Budapest 114, Hungary.;European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden.;Budapest Univ Technol & Econ, Inst Nucl Tech, Muegyet Rakpart 9, H-1111 Budapest, Hungary.
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- Kanaki, Kalliopi (författare)
- European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden.
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- Cai, Xiao Xiao (författare)
- European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden.;Tech Univ Denmark, DTU, DK-2800 Lyngby, Denmark.
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visa fler...
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- Ehlers, Georg (författare)
- Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
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- Hall-Wilton, Richard (författare)
- Mittuniversitetet,Avdelningen för elektronikkonstruktion,European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden.
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- Khaplanov, Anton (författare)
- European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden.
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- Kittelmann, Thomas (författare)
- European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden.
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- Zagyvai, Peter (författare)
- Hungarian Acad Sci, Ctr Energy Res, POB 49, H-1525 Budapest 114, Hungary.;Budapest Univ Technol & Econ, Inst Nucl Tech, Muegyet Rakpart 9, H-1111 Budapest, Hungary.
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visa färre...
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Hungarian Acad Sci, Ctr Energy Res, POB 49, H-1525 Budapest 114, Hungary;European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden.;Budapest Univ Technol & Econ, Inst Nucl Tech, Muegyet Rakpart 9, H-1111 Budapest, Hungary. European Spallat Source ESS ERIC, POB 176, SE-22100 Lund, Sweden. (creator_code:org_t)
- IEEE, 2017
- 2017
- Engelska.
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Ingår i: 2017 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC). - : IEEE. - 9781538622827
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- The European Spallation Source (ESS) aspires to be the worlds leading neutron source of the upcoming decades, and sets the scope on replacing He-3 tube detectors where it is reasonably achievable. The Multi-Grid detector, an Ar/CO2-filled proportional chamber based on solid (B4C)-B-10 converter, is the most potent replacement technology for chopper spectroscopy. This study reproduces in a detailed Geant4 geometry of a neutron scattering instrument the data from the Multi-Grid demonstrator detector, that has been tested for a 1 year period, installed side-by-side to the He-3 tubes at the CNCS instrument at SNS. For the further understanding of the background of the detector, Monte-Carlo simulations were performed, with the ESS Coding Framework, using a Geant4 version extended with NXSG4 and NCrystal. A detailed and realistic model of the prototype was built and was validated via comparison against measured data. With this model, different sources of neutron scattering were determined and studied separately, providing a better understanding of the scattered neutron background. Due to these capabilities the model will be used in the further optimization of the detector, especially for the background reduction via shielding, which will lead to instruments with better signal-to-background ratio by design.
Ämnesord
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
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