Dynamic measurements in a thermal ADSR core with pulsed neutrons method

Morgan Hervault; Takanori Kitada; Hironobu Unesaki; Cheol Ho Pyeon; Tsuyoshi Misawa; Seiji Shiroya

doi:10.11561/aesj.2006f.0.169.0

2006 Fall Meeting

Session ID : O43

DOI https://doi.org/10.11561/aesj.2006f.0.169.0

Conference information

Dynamic measurements in a thermal ADSR core with pulsed neutrons method

*Morgan Hervault, Takanori Kitada, Hironobu Unesaki, Cheol Ho Pyeon, Tsuyoshi Misawa, Seiji Shiroya

Author information

Keywords: ADSR, pulsed neutron method, dynamic measurement, reactivity, optical fiber

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Abstract

Pulsed neutron method and dynamic measurements analysis allow reactivity assessment in subcritical systems. However, in ADSR, detectors responses dependency on their positions is amplified by core heterogeneities like zoning and the presence of the beam neutron source itself. Neutron decay constant measurements by optical fiber have been conducted in KUCA to evaluate the variation on deduced reactivities, and compared with calculations.

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