Results 151 to 160 of about 69,074 (188)

Neutronic design of instrumentation for thermal effects measurement on VR-1 reactor

2009 1st International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications, 2009
At the Czech Technical University (CTU) in Prague a new instrumentation for measurement of thermal effects is currently designed for the use on the training reactor VR-1 “Sparrow”. The instrumentation is designed to serve both for the purposes of education and training and RD in the latter case especially for the examination of possible precision and ...
Tomas Bily, Lubomir Sklenka
openaire   +1 more source

Measurement of the selected spectral averaged cross sections in a radial channel of the VR-1 reactor

Applied Radiation and Isotopes, 2019
The spectral averaged cross section is an important quantity used in a validation of nuclear cross section. When the cross sections are averaged over the neutron standard field (252Cf(s,f) or 235U(n,f) neutron spectrum), they can be used for tuning of evaluations.
Nicola, Burianova, Michal, Kostal, Tomas, Bily, Evzen, Losa, Jan, Simon, Martin, Schulc, Vojtech, Rypar   +6 more
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Neutron field for activation experiments in horizontal channel of training reactor VR-1

Radiation Physics and Chemistry, 2014
Abstract The experimental channels of nuclear reactors often serve for nuclear data measurement and validation. The dosimetry-foils activation technique was employed to measure neutron field parameters in the horizontal radial channel of the training reactor VR-1, and to test the possibility of using the reactor for scientific purposes.
Milan Stefanik, Karel Katovsky, Miroslav Vins, Jaroslav Soltes, Lukas Zavorka   +4 more
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Rod drop transient at VR-1 reactor – Experiment and Serpent transient calculation analysis

Annals of Nuclear Energy, 2020
Abstract The rod drop experiment is an important transient in reactor operation. This study focuses on a comparison between experimental reactor physics data and respective calculation. The rod drop experiment was performed at the VR-1 reactor. A full core 3D model was used to calculate this transient using Serpent2.
Ondrej Novak, Lubomir Sklenka, Filip Fejt, Ivan Maldonado, Ondrej Chvala   +4 more
openaire   +1 more source

Study of dietary supplements compositions by neutron activation analysis at the VR-1 training reactor

Radiation Physics and Chemistry, 2017
Abstract The VR-1 training reactor operated by the Czech Technical University in Prague is utilized mainly for education of students and training of various reactor staff; however, RD each brand is represented by several different batches of pills. All pills were irradiated together with the standard activation etalons in the vertical channel of the ...
Milan Stefanik, Jan Rataj, Ondrej Huml, Lubomir Sklenka   +3 more
openaire   +1 more source

Neutron Activation Analysis of Environmental Samples at the Training Reactor VR-1

Journal of Nuclear Engineering and Radiation Science
Abstract Described research work is focused on the study of environmental pollution in the Czech Republic using an instrumental neutron activation analysis (INAA). The samples of mosses and alluvial soils were irradiated at the VR-1 training reactor utilizing a nondestructive (instrumental) method of NAA at the Czech Technical University
Alena Krechlerova, Milan Stefanik
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Neutron activation analysis of Tibetan traditional medicinal pills at the VR-1 training reactor

Radiation Physics and Chemistry, 2019
Abstract The nuclear analytical methods provide the research techniques usually used in hard sciences such as physics, chemistry, engineering and technology, or natural sciences and technology, but it is very rare to use them in social sciences and humanities. The Czech Technical University (CTU) in Prague operates the VR-1 training reactor primarily
Milan Stefanik, Lubomir Sklenka, Martin Cesnek, Marcel Miglierini, Jan Rataj   +4 more
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Manual control during reactivity transients at the VR-1 reactor – I. Disturbance rejection

Nuclear Engineering and Design, 2017
Abstract The description of human operator dynamic characteristics in mathematical terms compatible with control engineering practice is an essential prerequisite to the analytical treatment of manual reactor control systems. Safe reactor operation requires effective operator control through interaction with plant dynamics, manipulators and displays.
A.M. Darbyshire, T. Bily, J.S. Hatherall, K.D. Atkinson   +3 more
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Activation analysis of tibetan coins and thermal neutron flux measurement at the VR-1 training reactor

Radiation Physics and Chemistry, 2019
Abstract The VR-1 training reactor of Czech Technical University in Prague serves mostly to train students; however, owing to the presence of the experimental channels, it can be utilized for particular research tasks such as irradiation experiments, neutron radiography, and neutron activation analysis (NAA).
Milan Stefanik, Lubomir Sklenka, Ondrej Huml, Jan Rataj   +3 more
openaire   +1 more source

Effect of kinetics parameters on transients calculations in external source driven subcritical VR-1 reactor

Annals of Nuclear Energy, 2019
Abstract Kinetics parameters are of high importance for reactor transient analyses. Similarly, they play an important role in many experimental reactor techniques, especially in techniques for determination of reactivity (such as Source Jerk, Rod Drop, or Source Multiplication method).
Tomas Bily, Jan Rataj, Ondrej Huml, Ondrej Chvala   +3 more
openaire   +1 more source