IMORN-33 (33rd International Meeting On Reactor Noise)

6 Jul 2026, 08:00 → 8 Jul 2026, 18:30 Europe/Paris

LPSC

 

We are pleased to announce the next edition of the IMORN series: IMORN-33, the 33^rd International Meeting on Reactor Noise, will be held at CNRS/LPSC Grenoble, France, from the 6th-8th of July 2026

In the continuation of IMORN-30 in Chalmers University, Sweden, IMORN-31 in Delft University of Technology, Netherlands, and IMORN-32 in Cambridge, United Kingdom

The meeting will focus on recent advances in reactor noise analysis and its applications in nuclear reactors. The organisers welcome attendees to present their work on the theory and application of these techniques. The event is intended to be informal and encourage discussion among participants. The meeting will feature technical sessions of presentations and panel discussions. 
As previous IMORN meetings, this event will bring together experts, researchers, nuclear engineers, NPP personnel, university educators and students from across the nuclear science and engineering community, as well as welcoming new entrants to the growing field of reactor noise analysis.

Attendees to the conference are encouraged to submit a title for an oral presentation. 

Some example topics of interest include:

• The theory of neutron noise applied to nuclear reactors and non-proliferation.
• Numerical techniques in neutron noise analysis: noise source modelling, advanced method for numerical calculation of dynamic transfer functions.
• Experimental techniques utilizing reactor noise.
• The use of reactor noise for nuclear reactor diagnostics.
• Industrial applications of reactor noise.
• Data acquisition systems for noise analysis (hardware, software, data transfer, …)
• Built-in plant monitoring systems utilizing noise analysis methods to perform dedicated diagnostic functions
• Statistical data processing techniques with modern signal processing methods.
• Application of AI (e.g. data mining, machine learning and artificial neural network) techniques to elicit process information for anomaly detection, fault diagnosis and reliable prognosis.
• Online monitoring of NPPs and related data processing.
• I&C for monitoring and control of new innovative reactor designs (e.g. various SMR technologies)
• Multiplicity measurement and analysis methods for safeguards.
• Intruder detection with online monitoring.
• Reactor noise analysis supporting condition-based maintenance and outage reduction in NPPs.
• Communicating the advantages of reactor noise analysis to management and decision makers.
• ...

 

The Registration process is performed in two steps:

- Step 1 - pre-registration (see registration tab), limited to 50 participants
- Step 2 - you will receive a link to pay the registration fee

The payment (step 2) will be available around April, the fees are estimated at around 250€ covering lunches, coffee breaks and one social dinner.

 

                                  

 

 

 

 

Organising Committee:

Axel Laureau, axel.laureau@cnrs.fr - Elsa Merle, merle@lpsc.in2p3.fr - Oszvald Glockler, o.glockler@nep-consulting.com - Imre Pázsit, imre@chalmers.se - Paul Cosgrove, pmc55@cam.ac.uk - Jan-Leen Kloosterman, j.l.kloosterman@tudelft.nl

 

For any question on the local organisation, please contact Elsa Merle and Axel Laureau

See you soon in Grenoble!

 

 

Monday 6 July

09:00 → 09:30 Welcome

09:30 → 10:00 Opening, agenda, introduction, announcements. Self-introduction of the audience

Speaker: Elsa Merle, LPSC - IN2P3 - CNRS / Grenoble INP - UGA, France

10:00 → 10:15 Welcome - Introducing CNRS-LPSC

Speaker: Laurent Derome, head of the LPSC laboratory, France

10:15 → 10:30 Background - Historical overview of series of IMORN and SMORN meetings

Speaker: Imre Pázsit, Chalmers University, Sweden

10:30 → 10:45 Background - Reactor noise analysis in the nuclear power industry

Speaker: Hash Hashemian, Analysis and Measurements Services (AMS), USA

10:45 → 11:00 Background - Reactor noise analysis as a practical tool in NPPs

Speaker: Oszvald Glöckler, Nuclear Energy Projects Consultant, Hungary

11:00 → 11:30 Coffee Break / Group photo

11:30 → 12:00 P1: The State of Nuclear Development and Deployment in America

Speaker: Hash Hashemian, Analysis and Measurements Services (AMS), USA

12:00 → 12:30 P2: Advanced Reactors: Navigating the Noise Towards Deployment Reality

Speaker: Frederik Reitsma, Nuclear Power Technology Development Section (NPTDS), IAEA, Austria

12:30 → 14:00 Lunch (buffet)

14:00 → 14:30 P3: Pressure Noise Analysis in a Pipe Break Incident

Speaker: Wenqing Yao, China Nuclear Power Engineering Co., CNPE, China

14:30 → 15:00 P4: Recent Advances in Reactor Noise Analysis Applications

Speaker: Bhaskar Sur, Canadian Nuclear Laboratories (CNL), Canada

15:00 → 15:30 P5: Signal validation and fault detection by reactor noise analysis in NPPs

Speaker: Oszvald Glöckler, Nuclear Energy Projects Consultant, Hungary

15:30 → 16:00 Coffee break

16:00 → 16:30 P6: Application of Noise Analysis in Online Calibration Monitoring of Nuclear Plant Pressure Transmitters

Speaker: Hash Hashemian, Analysis and Measurements Services (AMS), USA

16:30 → 17:00 P7: MUSIC Organic Scintillators Benchmark

Speaker: Flynn Darby, Los Alamos National Laboratory, USA

17:00 → 17:30 Proposal on a Working Group on Neutron Noise Methods for Criticality Assay

Speaker: Daniel Siefman, Assistant Professor of Nuclear Engineering, UC Berkeley

19:00 → 21:00 Dinner (optional, pay your own) at the Bouillon A restaurant (5 place Nelson Mandela, 38000 Grenoble)

Tuesday 7 July

09:00 → 09:30 P8: A new type of neutron source/fission detector for Cf-252-driven neutron noise analysis - Part 1 and history (video)

Speaker: Imre Pázsit, Chalmers University, Sweden

09:30 → 10:00 P9: A new type of neutron source/fission detector for Cf-252-driven neutron noise analysis - Part 2

Speaker: Imre Pázsit, Chalmers University, Sweden

10:00 → 10:30 Coffee break

10:30 → 11:00 P10: Stochastic neutron noise in the point kinetics equations

Speaker: Benjamin Dechenaux, ASNR, France

11:00 → 11:30 P11: Modulation Noise Calculation: From Monte-Carlo to Deterministic Approaches and Back Again

Speaker: Axel Laureau, LPSC - IN2P3 - CNRS, France

11:30 → 12:00 P12: Pseudo random reactivity oscillations in the CROCUS reactor: simulation with the TFM approach and validation

Speaker: Max Begue, LPSC - IN2P3 - CNRS, France

12:00 → 12:30 P13: Neutron noise assessment in Stellaria's ALVIN experimental reactor

Speaker: Hamza Ghninou & Georges Gay, Stellaria, France

12:30 → 14:00 Lunch (buffet)

14:00 → 14:30 P14: Possibilities for measuring reactor noise in STACY

Speaker: Satoshi Gunji, Japan Atomic Energy Agency, Japan

14:30 → 15:00 P15: Neutron noise-based core monitoring for Small Modular Reactors using Machine Learning

Speaker: Salma Hussein, Chalmers University of Technology, Sweden

15:00 → 15:30 P16: Two-group theory of noise in fast Molten Salt Reactors

Speaker: Imre Pázsit, Chalmers University, Sweden

15:30 → 16:00 Coffee break

16:00 → 16:30 P17: Spatial effects in Cohn's method for neutron noise analysis

Speaker: Antoine Dervaux, CEA, France

16:30 → 17:00 P18: Effects of Delayed Emission on Gamma Noise Methods

Speaker: Cole Kostelac, Los Alamos National Laboratory (LANL), USA

17:00 → 17:30 TBD

Speaker: Máté Szieberth, Budapest University of Technology and Economics (BME), Hungary

17:45 → 18:45 Conference Dinner RDV choice 1 - walking from the lab along the river

18:45 → 19:00 Conference Dinner RDV choice 2 - directly at the cable-car departure station “Téléphérique Grenoble Bastille - 3 Quai Stéphane Jay, 38000 Grenoble"

19:00 → 21:00 Conference Dinner at the Restaurant du Téléphérique - 5 Chemin de la Bastille, 38000 Grenoble

Wednesday 8 July

09:30 → 10:00 P19: A space and time exploration of neutron correlations in CROCUS

Speaker: Vincent Lamirand, EPFL/PSI, Switzerland

10:00 → 10:30 P20: On the effect of coarse mesh versus fine mesh discretization for power reactor noise

Speaker: Fredrik Öhrlund, Chalmers University of Technology, Sweden

10:30 → 11:00 P21: Stochastic Subspace Identification for the Modal Analysis of Neutron Noise

Speaker: Antoine Dervaux, CEA, France

11:00 → 11:30 Coffee break

11:30 → 12:00 Looking forward: scope, format and hosting arrangements for future IMORN meetings

Speaker: All

12:00 → 12:15 Conclusion and wrap-up

Speaker: All

12:15 → 14:00 Lunch (buffet)