Neutron and gamma radiation in vertical irradiation channels of the LVR-15 research reactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F24%3AN0000205" target="_blank" >RIV/26722445:_____/24:N0000205 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Neutron and gamma radiation in vertical irradiation channels of the LVR-15 research reactor

Original language description

The LVR-15 research reactor situated at the site of the Research Centre Rez near Prague, is a light water moderated and cooled tank nuclear reactor with forced cooling. The maximum reactor power is 10 MW. It is a multi-purpose research reactor utilised for basic and applied material research, isotope transmutation and production of medical and technical isotopes. Received neutron fluence is the main parameter of the irradiation experiments. Horizontal and vertical channels of the reactor are used for the irradiation. The presentation focus on neutron fluence evaluation in vertical irradiation channels of the LVR-15 reactor using calculation and measurement. Vertical channels are used for irradiation experiments with required neutron fluence from 1E+15 cm-2 to 1E+21 cm-2. Before an experiment, neutron fluence estimation is usually made using theoretical calculation with MCNP code. During the experiment, activation detectors are irradiated near the samples, and after the experiment, final value of neutron fluence is evaluated using theoretical neutron spectrum and measured activities of activation detectors. The form of activation detectors is usually foil or wire and usual materials contain elements of Fe, Cu, Ti, Ni, Nb and Co. The induced activities are measured with HPGe spectrometry assembly. On the LVR-15 reactor, 5 to 8 vertical irradiation channels are available at the same time, depending on reactor core configuration. Values of neutron fluence rates in the irradiation positions are between 1E+12 cm-2s-1 and 2E+14 cm-2·s-1. In the presentation, typical values of neutron fluence rates are given for individual irradiation channels including vertical profile. Dose rates are also given for gamma radiation, which always accompanies neutron radiation. Poster at RAD 2024 conference.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

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

Project

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Continuities

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Publication year

2024

Confidentiality

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