Preparing a new reference neutron field in the graphite-shaped reference LR 0 reactor core Příspěvek na konferenci PHYSOR 2024 979-8-3313-0130-9

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F24%3AN0000136" target="_blank" >RIV/26722445:_____/24:N0000136 - isvavai.cz</a>

Result on the web

<a href="https://www.ans.org/pubs/proceedings/article-55502/" target="_blank" >https://www.ans.org/pubs/proceedings/article-55502/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13182/PHYSOR24-43538" target="_blank" >10.13182/PHYSOR24-43538</a>

Result language

angličtina

Original language name

Preparing a new reference neutron field in the graphite-shaped reference LR 0 reactor core Příspěvek na konferenci PHYSOR 2024 979-8-3313-0130-9

Original language description

The study described in this paper aimed to modify the neutron spectrum using graphite insertion within the LR-0 reference core, which provides a well-defined neutron source. The modified spectrum is essential for various nuclear research applications. Reactor graphite is an essential material in nuclear physics and is non-negligible in developing new types of, e.g., high-temperature reactors. Experiments were conducted using activation detectors to map the thermal, epithermal, and fast neutron flux within the graphite prism. The reaction rates were determined by measuring the activity of the activation detectors using a high-purity germanium (HPGe) detector. The experimental results showed excellent agreement with MCNP code calculations, particularly for central axial positions, with discrepancies below 4%. The neutron spectrum shape was found to be position-dependent, and the thermal neutron share increased with proximity to the water moderator level. The study provides valuable insights into the neutron flux distribution within the modified graphite cavity and establishes a foundation for further validation experiments and precise mapping. The paper demonstrates the suitability of the LR-0 reactor and the modified graphite cavity for future benchmark experiments and neutron spectrum measurement.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

<a href="/en/project/LM2023041" target="_blank" >LM2023041: Czech International Centre of Research Reactors</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

International Conference on Physics of Reactors (PHYSOR 2024)

ISBN

979-8-3313-0130-9

ISSN

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e-ISSN

—

Number of pages

8

Pages from-to

297-305

Publisher name

ANS

Place of publication

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Event location

San Francisco, USA

Event date

Apr 21, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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