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Monte Carlo simulations of a back scatter time-of-flight neutron spectrometer for the purpose of concept testing.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. (Fusionsdiagnostikgruppen)
2018 (English)Student paper other, 10 HE creditsStudent thesis
Abstract [en]

The work focuses on Monte Carlo simulations for finding the optimal back scatter time-of-flight spectrometer design for concept testing at the NESSA facility at Uppsala University. The spectrometer consists of two scintillator detectors, D1 (placed in a neutron beam) and D2 (placed in front of D1), at some distance from each other. A fraction of the neutrons that impinge on D1 back scatter into D2 and information on the neutron energy distribution is acquired using the time-of-flight method. For the given constraints on geometry, resolution and efficiency a best resolution was found to be 6.6% with a corresponding efficiency of 1E-4 which gives a sufficient count rate for a neutron generator producing 1E+11 neutrons/s. In order to achieve a minimum of 10 000 counts/h with the same setup a D2 with an area of at least 7 cm^2 is required.

Place, publisher, year, edition, pages
2018. , p. 14
Series
FYSAST ; FYSPROJ1089
Keywords [en]
back scatter, NESSA, bTOF, neutron spectrometer, time-of-flight, tof, fusion, ITER, simulation
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-342448OAI: oai:DiVA.org:uu-342448DiVA, id: diva2:1184321
Educational program
Master Programme in Physics
Supervisors
Examiners
Available from: 2018-02-22 Created: 2018-02-21 Last updated: 2018-02-22Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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