Results 151 to 160 of about 22,450 (171)

Measurement of fast neutron spectrum in the radial channel of VR-1 research reactor

Radiation Physics and Chemistry, 2023
Zdeněk Matěj, Michal Košťál, Evžen Losa, Ondřej Huml, Milan Štefánik, Tomáš Bartoň, František Cvachovec, Filip Mravec, Václav Přenosil   +8 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
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Investigation of Buddhist and Bon votive statues at the Very low power reactor VR-1

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2023
Jana Matoušková, Lubomir Sklenka, Burkhard Schillinger   +2 more
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Broomstick experiment with copper in VR-1 reactor

Annals of Nuclear Energy
Michal Košťál, Evžen Losa, Tomáš Czakoj, Stanislav Simakov, Marek Zmeškal, Martin Schulc, Jan Šimon, Vojtěch Rypar, Evžen Novák, František Cvachovec, Filip Mravec, Václav Přenosil, Peter Krásný, Roberto Capote, Zdeněk Matěj   +14 more
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Neutron activation analysis of meteorites at the VR-1 training reactor

Radiation Physics and Chemistry, 2020
Abstract Samples of space objects were characterized using instrumental neutron activation analysis (NAA) combined with conversion electron Mossbauer spectrometry. Fragments of Moldavites, Muonionalusta meteorite and Sikhote-Alin meteorite were irradiated in the thermal neutron field of the low-power VR-1 training reactor operated by the Czech ...
Milan Stefanik, Martin Cesnek, Lubomir Sklenka, Tomas Kmjec, Marcel Miglierini   +4 more
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Calibration of new I&C at VR-1 training reactor

Nuclear Engineering and Design, 2011
The paper describes a calibration of the new instrumentation and control (I&C) at the VR-1 training reactor in Prague. The I&C uses uncompensated fission chambers for the power measurement that operate in a pulse or a DC current and a Campbell regime, according to the reactor power.
Martin Kropik, Monika Jurickova
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Characterization of mixed N/G beam of the VR-1 reactor

Annals of Nuclear Energy, 2018
Abstract VR-1 is light water zero-power reactor using IRT-4 M fuel with nominal enrichment of 19.7 wt%, equipped with the radial channel being directly attached to the fuel. Enrichment at the top level of the low enriched uranium limit guarantees that the larger part of non-scattered neutrons in the spectrum is coming from 235U than in case of ...
Michal Košťál, Evžen Losa, Zdeněk Matěj, Vlastimil Juříček, Davit Harutyunyan, Ondřej Huml, Milan Štefánik, František Cvachovec, Filip Mravec, Martin Schulc, Tomáš Czakoj, Vojtěch Rypar   +11 more
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Determination of the effective delayed neutron fraction for training reactor VR-1

Progress in Nuclear Energy, 2010
Abstract This paper describes a methodology of effective delayed neutron fraction (βeff) determination for the VR-1 training reactor located at the Czech Technical University (CTU) in Prague. The methodology contains both experimental and computational elements.
Svetozár Michálek, Stanislav Števo, Gabriel Farkas, Ján Haščík, Vladimír Slugeň, Ján Rataj, Antonín Kolros   +6 more
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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
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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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