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

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 dete...

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Autores principales:	Czakoj Tomáš, Košťál Michal, Matěj Zdeněk, Losa Evžen, Šimon Jan, Mravec Filip, Cvachovec František
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	capture gammas scintillation detectors hpge detector prompt gamma Physics QC1-999
Acceso en línea:	https://doaj.org/article/79221113fd4f42e4adf62ce842ae287f
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id	oai:doaj.org-article:79221113fd4f42e4adf62ce842ae287f
record_format	dspace
spelling	oai:doaj.org-article:79221113fd4f42e4adf62ce842ae287f2021-12-02T17:12:46ZMeasurement of prompt gamma field above the VR-1 water level2100-014X10.1051/epjconf/202125304014https://doaj.org/article/79221113fd4f42e4adf62ce842ae287f2021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_04014.pdfhttps://doaj.org/toc/2100-014XPool-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.Czakoj TomášKošťál MichalMatěj ZdeněkLosa EvženŠimon JanMravec FilipCvachovec FrantišekEDP Sciencesarticlecapture gammasscintillation detectorshpge detectorprompt gammaPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 04014 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	capture gammas scintillation detectors hpge detector prompt gamma Physics QC1-999
spellingShingle	capture gammas scintillation detectors hpge detector prompt gamma Physics QC1-999 Czakoj Tomáš Košťál Michal Matěj Zdeněk Losa Evžen Šimon Jan Mravec Filip Cvachovec František Measurement of prompt gamma field above the VR-1 water level
description	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.
format	article
author	Czakoj Tomáš Košťál Michal Matěj Zdeněk Losa Evžen Šimon Jan Mravec Filip Cvachovec František
author_facet	Czakoj Tomáš Košťál Michal Matěj Zdeněk Losa Evžen Šimon Jan Mravec Filip Cvachovec František
author_sort	Czakoj Tomáš
title	Measurement of prompt gamma field above the VR-1 water level
title_short	Measurement of prompt gamma field above the VR-1 water level
title_full	Measurement of prompt gamma field above the VR-1 water level
title_fullStr	Measurement of prompt gamma field above the VR-1 water level
title_full_unstemmed	Measurement of prompt gamma field above the VR-1 water level
title_sort	measurement of prompt gamma field above the vr-1 water level
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/79221113fd4f42e4adf62ce842ae287f
work_keys_str_mv	AT czakojtomas measurementofpromptgammafieldabovethevr1waterlevel AT kostalmichal measurementofpromptgammafieldabovethevr1waterlevel AT matejzdenek measurementofpromptgammafieldabovethevr1waterlevel AT losaevzen measurementofpromptgammafieldabovethevr1waterlevel AT simonjan measurementofpromptgammafieldabovethevr1waterlevel AT mravecfilip measurementofpromptgammafieldabovethevr1waterlevel AT cvachovecfrantisek measurementofpromptgammafieldabovethevr1waterlevel
_version_	1718381385932079104

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

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