shouldbefilledoutonlineat:Should there be any problem with the online registration, pleasecontact: fjoh@cea.fr

Key dates

Executive Bureau

May 20th, 2023: Application deadline
June 10th, 2023: Notification to applicantsAugust 22nd, 2023, 7:00 pm: Welcome of the participants
with a get-together dinner at the GenoHotel Karlsruhe
August 23rd, 2023, 9:00 am: Start of the school’s lectures

Application deadline: May 20th, 2023
Full Registration fees: €2200
Information for payment of the fees will be provided after
review of the applications.
The fees cover: lectures, class notes, meals andaccommodations at the GenoHotel Karlsruhe from August 23rd
evening to September 1st, 2:00 pm.

Professor Dr. RobertStieglitz
School Director
KIT, Germany
robert.stieglitz@kit.edu

Dr. Robert Jacqmin
School Director
CEA, France
robert.jacqmin@cea.fr

Dr. Michael Rieth
School Co-Director
KIT, Germany
michael.rieth@kit.edu

Dr. Carole Valot
School Co-Director
CEA, France
carole.valot@cea.fr“Physics, Fuels and Systems”

September 1st, 2023: End of school

Location
Karlsruhe, GERMANY

The fees do not cover travel expenses.
Cadarache

A small number of fellowships wil be available for qualified
candidates. A fellowship covers the amount of €1100, the sameamount of €1100 having to be financed by the applicant or
his/her employer. These fellowships are primarily intended forcandidates from developing countries. Requests should bemotivated.

Aix-en-Provence

All applicants are required to provide a short curriculum vitae,
which will be used for selection purposes.
The FJOH School considers that the 2023 program corresponds
approximately to 3-4 ECTS credits of post graduate-levelcourse work in Nuclear Engineering.
Selection by the FJOH School organizers is final.
Partial participations are not accepted.

For more information, please visit our web site:www.fjohss.eu

Questions? Please contact the FJOH Secretariat at fjoh@cea.fr

Scientific Secretariat

Secretariat

Dr. Victor H. Sánchez-Espinoza
Dr. Gabrielli Fabrizio
KIT, Germany
victor.sanchez@kit.edu
fabrizio.gabrielli@kit.edu

Mrs Ingeborg Schwartz
KIT, Germany
Phone: +49 (0) 721 6082 2552
ingeborg.schwartz@kit.edu

Dr. Vanessa Vallet
Dr. Isabelle Guénot-Delahaie
CEA, Francevanessa.vallet@cea.fr
isabelle.guenot-delahaie@cea.fr

Mrs Valérie Fontanay
Corinne Druesne
Manon Ori
CEA, France
Phone: +33 (0) 4 4225 3788
fjoh@cea.fr

Digital Twins:
New Horizons inNuclear Reactor Designand Optimisation
Jointly organized by the Commissariat à l’Energie Atomique et aux Energies
Alternatives (France) and the Karlsruhe Institute of Technology(Germany)

FJOH Scientific Board members
 Dr. Paul Bryce (EdF Energy, UK)  Pr. Rudy Konings(EC/JRC &Delft Univ., Germany) Dr. Nathalie Chauvin(CEA, France) Pr. Oscar Cabellos (UPM, Spain) Pr. Leon Cizelj (JSI,Slovenia)
 Pr. Elsa Merle (CNRS,France) Pr. Mariusz Dabrowski
 Pr. Andreas Pautz(NCBJ, Poland)(PSI &EPFL, Switzerland) Pr. Christophe Demazière
 Dr. Andreas Schaffrath(Chalmers, Sweden)(GRS,Germany) Pr. Sandra Dulla Dr. Christophe Schneidesch(Politecnico diTorino, Italy)(Tractebel Engie, Belgium) Pr. Matthew Eaton
 Dr. Walter Tromm(Imperial College, UK)(KIT, Germany) Pr. Michel Giot (UCL, Belgium)  Dr. Harri Tuomisto(FortumPower, Finland) Dr Nathalie Girault(IRSN, France) Pr. Gert Van den Eynde(SCK-CEN, Belgium) Pr. Jan Leen Kloostermann(DelftUniv., The Netherlands)  Dr. Nicolas Waeckel(EdF,France)

August 23rd> September 1st, 2023

© CEA

The target participants are junior as well as experienced
scientists and engineers in the broad field of nuclear sciences,engineering and technologies.
The application form
http://www.fjohss.eu

Coordination

Information

2023

Application

Programme Outline

Lecturers

Objectives

Digital Twins: New Horizons in
Nuclear Reactor Design and Optimisation
Lectures––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

1. Opportunities in Developing Digital Twins for Near-Term and Future Nuclear Reactors –––––––––––––––––––––––––––––––––
1.1

Digital Twins for Generation-III/III+ Reactors, LWRs and SMRs –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– To be announced (EDF)

1.2

The Promise of Artificial Intelligence and the 4 th Industrial Revolution forGeneration-IV Reactor Design –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– N. Prinja (Jacobs)

2. Methods for Data Management and High-Performance Computing –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

4 h ––––

7 h ––––

2.1

Data-driven Uncertainty Quantification and Sensitivity Analysis ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– R. McClarren (Univ. Notre Dame)

2.2

Data-driven Surrogate Modelling, Artificial Intelligence and Machine Learning –––––––––––––––––––––––––––––––––––––––– M. Frank (KIT HPC Center)

2.3

Data Assimilation and Data Mining –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– To be defined

3. Computer-based Materials and Fuel Developments –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
3.1

Using Machine Learning in Material Science: Application to the Simulation of Fuel andStructural Materials –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– L. Messina (CEA)
P. Grigorev (AMU)

3.2

From Nuclear Fuel Element Simulation towards the Use of Digital Twins ––––––––––––––––––––––––––––––––––––––––––––––––––– D. Pizzocri (Polimi)
K. Gamble (INL)

4. Advanced Methods in Nuclear Data and Reactor Physics –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
4.1

Recent Trends in Applying Machine Learning Methods to Nuclear Data Life Cycle ––––––––––––––––––––––––––––––– O. Cabellos (UPM)

4.2

How Can Modern Artificial Intelligence Serve Reactor Physics? ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– L. Fiorito (SCK-CEN)

5. High-fidelity Nuclear Thermal-Hydraulics ––––––––––––––––––––––––––––––––––––––––––––––––––-–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––5.1

Machine Learning for Fluid Dynamics ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– M. A. Mendez (VKI)

5.2

CFD and Multi-scale Simulations: From Aiding the Designers to Helping the Safety Demonstration ––––––––––––– A. Gerschenfeld (CEA)

6. Nuclear Design and Optimisation Using Multi-physics Modelling and Simulation ––––––––––––––––––––––––––––––––––––––––––––––
6.1

Nuclear Reactor Safety by Design –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– F. Bertrand (CEA)

6.2

Safety and Regulatory Aspects of Digital Twin-based Approaches –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– V. Yadav (INL)

Seminar–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-––––––––––––-–––––––––––––-––––––––––––-–––––––––––––-––––––––––––-–––––––––––––

6 h ––––

6 h ––––

6 h ––––

5 h ––––The main objective of the FJOH-2023 edition is to help the schoolparticipants broaden their knowledge of the scientific andtechnical aspects underpinning nuclear digital twins. The lectures
will lay emphasis on the required modelling and simulation(M&S) techniques, including the information and data flows
between the physical system and its digital representation.
The FJOH-2023 participants will learn about: The incentives for developing digital twins for nuclear
applications; General data and information management methods anddigital twin-enabling technologies for uncertainty estimationand propagation, data-informed surrogate modelling,machine learning and data assimilation, in connection withhigh-performance computing resources; High-fidelity M&S models integrated in digital twins, for the
purpose of fuel developments, core physics simulations,system thermo-hydraulics studies; The regulatory implications of digital twin-based approaches
for optimised nuclear design and licensing.
By the end of the course, the participants should be able toexplain why and how digital twins are expected to take a
growing importance in nuclear applications, also discuss someof the corresponding challenges and gaps.
FJOH-2023 includes plenary lectures, group discussions, seminars,
and technical visits. The invited speakers are internationallyrecognized experts from leading universities, research anddevelopment laboratories and industry.
The FJOH-2023 participants will have the opportunity, as part ofgroup activities, to practice their freshly-acquired knowledge andto reflect upon open-ended questions in group activities. Time forthese group activities is set aside in the School schedule.

Description

The 28th session of the Frédéric Joliot/Otto Hahn (FJOH) Summer
School on “Nuclear Reactors Physics, Fuels, and Systems”, will bededicated to “Digital Twins: New Horizons in Nuclear Reactor
Design and Optimisation”. It will be held in Karlsruhe from
August 23rd to September 1st, 2023.
FJOH summer school is an advanced post-graduate-level course
aimed at junior as well as experienced scientists and engineers
engaged in the broad field of nuclear sciences, engineering andtechnologies.
Lecturers are invited from internationally leading universities andindustry. The School format encourages informal discussions andthe exchange of knowledge between lecturers and participants.
The Frédéric Joliot / Otto Hahn Summer School course represents
the continuation of the Frédéric Joliot Summer Schools on“Modern Reactor Physics and the Modelling of Complex
Systems”, which was created by CEA in 1995 to promoteknowledge in the field of reactor physics, in a broad sense, andthe international exchange of teachers, scientists, engineers andresearchers. Beginning in 2004, the scope of the School wasextended to include scientific issues related to nuclear fuels. Thevenues of the FJOH School sessions alternate between Karlsruheand Aix-en-Provence.
The program of each School session is defined by theInternational FJOH Scientific Board.
FJOH is jointly organized by the CEA Energy Division (France) andthe Karlsruhe Institute of Technology (KIT, Germany).

2 h –––––––-–––––-–-

From Aerospace to Nuclear: the Benefits of Digital Twins ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– To be definedGroup activities
Technical visits–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-––––

6 h ––––––-––-–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-––––––––––––––––––––––––––––––––––––––––––-––––––––––––––––––––––––––––––––––––––––––-–––––––––––––––––––––––––––––––––––––

2023