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Neutron noise measu...
Neutron noise measurements in the YALINA-Booster experiments
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- Berglöf, Carl (author)
- KTH,Reaktorfysik
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Fernández-Ordóñez, M. (author)
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Villamarín, D. (author)
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Bécares, V. (author)
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González-Romero, E. M. (author)
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Bournos, V. (author)
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Serafimovich, I. (author)
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Mazanik, S. (author)
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Kiyavitskaya, H. (author)
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(creator_code:org_t)
- International Atomic Energy Agency, 2009
- 2009
- English.
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In: Proceedings of International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators. - : International Atomic Energy Agency. - 9789201504104
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- In addition to the pulsed neutron source measurements and the continuous source beam-trip and current-to-flux measurements performed in the YALINA-Booster facility, also presented in this conference, a set of neutron noise measurements has been performed to achieve a complete characterization of the core. The neutron noise measurements have been performed in three different configurations covering a subcriticality range from 0.85 to 0.977. The Rossi-α neutron noise technique has been applied to detector counts from two channels in the thermal part of the core. The Rossi-α results are compared to the experimental prompt neutron decay constants obtained from the pulsed neutron source measurements. A first approach fitting procedure reveals a need of three exponentials to describe the Rossi-α histograms. It has been found that at deep subcriticality, the fundamental mode decay may coincide with or be close to a higher eigenmode, thus making it difficult to determine the prompt neutron decay constant correctly.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Detector counts
- Eigen modes
- Exponentials
- Fitting procedure
- Flux measurements
- Fundamental modes
- Neutron noise
- Prompt neutron decay constant
- Pulsed neutron sources
- Subcriticality
- Two channel
- Neutron emission
- Neutron sources
- Nuclear engineering
- Reactivity (nuclear)
- Acoustic noise measurement
Publication and Content Type
- ref (subject category)
- kon (subject category)
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