Evaluation of the spectrum unfolding methodology for neutron activation system of fusion devices

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00509964" target="_blank" >RIV/61389005:_____/19:00509964 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.fusengdes.2019.02.056" target="_blank" >https://doi.org/10.1016/j.fusengdes.2019.02.056</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fusengdes.2019.02.056" target="_blank" >10.1016/j.fusengdes.2019.02.056</a>

Result language
angličtina
Original language name
Evaluation of the spectrum unfolding methodology for neutron activation system of fusion devices
Original language description
A neutron activation system (NAS) is a highly useful and reliable tool for neutron flux and energy-spectrum measurements in fusion devices. We are evaluating a fast and efficient methodology for processing of fusion NAS data. Starting with the gamma spectra of irradiated activation materials, the method ultimately produces unfolded spectrum of the incident neutrons and uncertainty estimates. Here, we test the method using data from dedicated experiments at the Joint European Torus (JET) tokamak in Culham and the Nuclear Physics Institute (NPI) in Rez. These measurements utilize few, from three to five reaction channels as input to the unfolding process. Two spectral adjustment code-packages have been adapted for this purpose: MAXED from UMG 3.3 and STAYSL-PNNL. While the former is frequently applied, the latter is a new addition to the case of fusion device NAS. We present the post-analyses of NAS data, spectral adjustments and some discussion on the experiences with these tools, required developments and our planned future studies.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project
<a href="/en/project/LM2015056" target="_blank" >LM2015056: Center of Accelerators and Nuclear Analytical Methods</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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