| Issue |
EPJ Web Conf.
Volume 338, 2025
ANIMMA 2025 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications
|
|
|---|---|---|
| Article Number | 04006 | |
| Number of page(s) | 4 | |
| Section | Research Reactors and Particle Accelerators | |
| DOI | https://doi.org/10.1051/epjconf/202533804006 | |
| Published online | 06 November 2025 | |
https://doi.org/10.1051/epjconf/202533804006
Modern Measurements of Fission Reactor Power Spectral Density
CEA, DES, IRESNE, Department of Reactor Studies, Cadarache F-13108 Saint-Paul-Lez-Durance, France
* This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 6 November 2025
Abstract
Power spectral density measurement techniques allow to derive information on nuclear reactors. In specific conditions, one can obtain reactor’s kinetic parameters. At IRESNE institute, located at CEA Cadarache, the researchers of the Department of Reactor Studies have used for many years X-MODE and SPECTRON Data Acquisition systems (DAQ) to measure power spectral densities. Due to electronic components, computer, and software obsolescence, the Department started a refurbishment program. The new SCHMITT DAQ replaces X-MODE. It is based on a CAEN R7771 neutron pulse train recorder device, an industrial Linux computer, and a custom-made software. The latter, developed by the Department, is in charge of acquisition setting, data recording, post processing, and visualization. The paper describes the development of the SCHMITT DAQ. The software is written in an object-oriented approach and based on Qt framework for enhanced code portability and to allow using new standard software technologies. This new DAQ has been successfully completed and is ready to for a future qualification and usages. Current developments aim at including support for advanced nuclear data post-processing.
Key words: Neutron Noise / Reactor Kinetic / PSD
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.