Measurement of prompt gamma field above the VR-1 water level

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F21%3AN0000128" target="_blank" >RIV/26722445:_____/21:N0000128 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14330/21:00122896

Výsledek na webu

<a href="https://www.epj-conferences.org/articles/epjconf/abs/2021/07/epjconf_animma2021_04014/epjconf_animma2021_04014.html" target="_blank" >https://www.epj-conferences.org/articles/epjconf/abs/2021/07/epjconf_animma2021_04014/epjconf_animma2021_04014.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/202125304014" target="_blank" >10.1051/epjconf/202125304014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of prompt gamma field above the VR-1 water level

Popis výsledku v původním jazyce

Pool-type reactors are an excellent source of high energy photons without neutrons because the water above fuel acts as an outstanding neutron shielding, whereas for high energy photons, it is nearly transparent. The absence of neutrons is a valuable property essential for testing semiconductor detectors because they are sensitive to neutrons, which might cause their damage. The high energy gammas are worth studying because they are responsible for radiation induced heating of reactor internal components in energy producing reactors, which might lead to their radiation induced damage by void swelling. At this effect, the helium produced in (n,α) reactions influenced by locally increased temperature clusters into bigger bubbles, which are increasing material volume, and therefore changing the geometry of internals. The referred method could be utilized e.g. for resource exploration by detecting prompt capture gammas. The prompt gamma field was measured at the VR-1 reactor with two different cores and water levels. The stilbene measurements showed relatively good agreement with the spectrum shape computed by MCNP6.2. An important result is a confirmation that the stilbene deconvolution matrix can be used with a rotated crystal. The testing measurement with HPGe detectors showed a possibility for measurement in such type of geometry.

Název v anglickém jazyce

Measurement of prompt gamma field above the VR-1 water level

Popis výsledku anglicky

Pool-type reactors are an excellent source of high energy photons without neutrons because the water above fuel acts as an outstanding neutron shielding, whereas for high energy photons, it is nearly transparent. The absence of neutrons is a valuable property essential for testing semiconductor detectors because they are sensitive to neutrons, which might cause their damage. The high energy gammas are worth studying because they are responsible for radiation induced heating of reactor internal components in energy producing reactors, which might lead to their radiation induced damage by void swelling. At this effect, the helium produced in (n,α) reactions influenced by locally increased temperature clusters into bigger bubbles, which are increasing material volume, and therefore changing the geometry of internals. The referred method could be utilized e.g. for resource exploration by detecting prompt capture gammas. The prompt gamma field was measured at the VR-1 reactor with two different cores and water levels. The stilbene measurements showed relatively good agreement with the spectrum shape computed by MCNP6.2. An important result is a confirmation that the stilbene deconvolution matrix can be used with a rotated crystal. The testing measurement with HPGe detectors showed a possibility for measurement in such type of geometry.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/LM2018120" target="_blank" >LM2018120: Experimentální jaderné reaktory LVR-15 a LR-0</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

EPJ Web of Conferences 253, 04014 (2021) : ANIMMA 2021 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications

ISBN

—

ISSN

2100-014X

e-ISSN

2100-014X

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

EPJ

Místo vydání

—

Místo konání akce

Praha

Datum konání akce

21. 6. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—