<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The possibility of preparing fission chambers for the experimental determination of subcriticality without time-consuming corrections has been presented. The reactor detectors set consists of monoisotopic chambers. Each chamber is intended for a specific position in the system. Individual weights, rated <italic>a priori</italic> for all detectors in their positions, allow for quick calculation of whole system subcriticality. The inconveniences related to the spatial effect are minimized. This is achieved by computational simulation of the area method results, for each detector position and all possible fissionable and fissile nuclides. Next, one nuclide is selected, specific for the given position, presenting the smallest difference from the MCNP KCODE precisely estimated kkcode. The case study is made using the model of VENUS-F core.</p></abstract>

The possibility of preparing fission chambers for the experimental determination of subcriticality without time-consuming corrections has been presented. The reactor detectors set consists of monoisotopic chambers. Each chamber is intended for a specific position in the system. Individual weights, rated a priori for all detectors in their positions, allow for quick calculation of whole system subcriticality. The inconveniences related to the spatial effect are minimized. This is achieved by computational simulation of the area method results, for each detector position and all possible fissionable and fissile nuclides. Next, one nuclide is selected, specific for the given position, presenting the smallest difference from the MCNP KCODE precisely estimated kkcode. The case study is made using the model of VENUS-F core.

Fission chambers for space effect reduction in the application of the area method: A new approach

Department of Nuclear Reactors, Faculty of Energy and Fuels

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The possibility of preparing fission chambers for the experimental determination of subcriticality without time-consuming corrections has been presented. The...

Fission chambers for space effect reduction in the application of the area method: A new approach

Published Online: Jul 06, 2020

Page range: 161 - 166

Received: Jun 24, 2019

Accepted: Jan 17, 2020

DOI: https://doi.org/10.2478/nuka-2020-0026

Keywords
Subcriticality, Simulation, Area method, Fission chambers, Space effect

© 2020 Jerzy A. Janczyszyn et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Fission chambers for space effect reduction in the application of the area method: A new approach

Published Online: Jul 06, 2020

Page range: 161 - 166

Received: Jun 24, 2019

Accepted: Jan 17, 2020

DOI: https://doi.org/10.2478/nuka-2020-0026

KeywordsSubcriticality, Simulation, Area method, Fission chambers, Space effect

© 2020 Jerzy A. Janczyszyn et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Subcriticality, Simulation, Area method, Fission chambers, Space effect