Materials

• Approach to critical in CROCUS

23 March 2021

• Power reactor noise theory
  (C. Demazière)
• Validation of neutron noise simulators
  (M. Hursin)
• The AKR-2 in the Cortex project
  (A. Knospe/C. Lange)
• Measurement campaigns at AKR-2
  (A. Knospe)
• Extracting QOI out of experimental data : 1/2
  (K. Ambrožič, A. Knospe, V. Lamirand)
• Modelling an absorber of variable strength & a vibrating absorber in the frequency domain with diffusion and transport theory
  (A. Mylonakis, T. Yamamoto)
• Uncertainty analyses
  (S. Yum)
• Summary of the validation exercise for AKR-2
  (M. Hursin)

24 March 2021

• CROCUS experimental campaigns
  (V. Lamirand)
• Results and lessons learned
  (K. Ambrožič, V. Lamirand)
• Extracting QOI out of experimental data : 2/2
  (K. Ambrožič, V. Lamirand)
• Modelling a vibrating absorber in the frequency domain with diffusion and transport theory
  (A. Mylonakis, T. Yamamoto, A. Rouchon, A. Zoia)
• Modelling vibrating absorber in the time domain with diffusion theory
  (A. Vidal-Ferràndiz)
• Simulations of COLIBRI experiments at CROCUS – A summary
  (P. Vinai)

12 March 2020

• Introduction and Motivations
  (M. Hursin)
• Power reactor noise
  (C. Demazière)
• Analysis of the experimental data
  (K. Ambrožič, V. Lamirand, S. Hübner)
• Some aspects of signal analysis of WP 2 CROCUS and AKR-2 experiments in comparison to WP 4 NPP Goesgen measurements
  (J. Pohlus, C. Pohl)
• Some «hints» for discussion on the validation of models on the 1st CROCUS experimental campaign
  (A. Brighenti, S. Santandrea, I. Zmijarevic)
• Noise induced by FA vibrations in time-domain diffusion codes: PARCS and FEMFFUSION
  (A. Vidal-Ferràndiz)
• Simulating neutron noise with the CORE SIMplus diffusion solver
  (A. Mylonakis)

13 March 2020

• Advances on the noise model in the frequency domain
  (A. Zoia, A. Rouchon)
• Monte Carlo calculation method for neutron noise
  (T. Yamamoto)
• Uncertainty Propagation: Data Preparation & Post Processing
  (S. Yum)

• Introduction to the Methodology of Sensitivity Analysis
  (S. Yum)
• UP and SA under the Condition of Neutron Flux Oscillation
  (S. Yum)

Introductory session

• Welcome, UJV Introduction
  (V. Fiser – UJV Rez)
• Basic EU Cortex information
  (C. Demazière – Chalmers University of Technology)
• UJV activity in the field of fuel cycles and noise plant diagnostics
  (F. Havluj – UJV Rez)
• UJV activity in the field of fuel cycles and noise plant diagnostics
  (P. Stulik – UJV Rez)
• CIIRC introduction
  (L. Lhotska – Czech Institute of Informatics, Robotics and Cybernetics, Czech Technical University in Prague)

Session 1 – Neutron noise simulation for the development and testing

• Neutron noise simulation for the development and testing
  (C. Demazière – Chalmers University of Technology)

Session 2 – Advanced signal processing techniques

• Challenges in signal processing in complex applications
  (L. Lhotska, V. Gerla – CIIRC CVUT)
• Noise analysis in plant data processing
  (P. Stulik – UJV Rez)
• Reconstruction of ex- and in-core neutron signals
  (J. Machek, UJV Rez)
• Signal processing methodologies for nuclear reactor data
  (G. Alexandridis – National Technical University of Athens)
• The computational intelligence paradigm for the efficient, accurate and robust processing of nuclear reactor data
  (T. Tambouratzis – University of Piraeus)

Session 3 – State-of-the-art machine learning methodologies

• Learning methodologies: issues of data, features, and long-term trends
  (M. Macas – CIIRC CVUT)
• State-of-the-art machine learning methodologies
  (G. Leontidis – University of Lincoln)
• Deep learning: 3D convolutional and recurrent neural networks in reactor perturbations unfolding and anomaly detection
  (G. Leontidis – University of Lincoln)

Session 4 – Panel discussion

The alive and vital discussions confirmed that the new advanced processing and learning methodologies are the crucial aspect of the effective and reliable core diagnostics based on the knowledge of reactor inversion function.

The one day workshop was followed by a working meeting of WP3, which was attended by 10 specialists, who actively participate in the project. The meeting was concentrated on further progress in WP3 and WP4, discussions about the new simulation data sets and on real NPP data processing challenges.

• Exercises chapter 1 “Space-time dependent reactor kinetics in diffusion theory”
• Exercises chapter 2 “Small-space dependent fluctuations: power reactor noise”
• Videos and quizzes

Training material