The NEA Expert Group on the Physics of Reactor Systems (EGPRS) organised a one-day workshop to foster exchanges among radiation transport simulation developers. The workshop aimed to facilitate exchanges among different code developer teams encompassing both scientific and commercial developers engaged in various radiation transport (RT) applications.

The ultimate goal is to establish a vibrant community of practice, fostering periodic interactions among development teams. This workshop was co-organised with SATIF-16 and hosted by INFN Laboratori Nazionali di Frascati, Italy, before SATIF-16 on 27 May 2024. 

The workshop featured four panel discussions introduced by keynote speeches given by international experts. Thereafter, the participants discussed future trends, opportunities, blocking points, and co-operation options.

8:30 - 8:50 CEST: Opening remarks

• Dr. Alessandro GALLO, Head of the Accelerator Division, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (INFN/LNF), Italy
• Dr Robert GROVE, Oak Ridge National Laboratory, United States & Chair of the NEA Expert Group on the Physics of Reactor Systems (EGPRS) 
• Dr Oliver BUSS, OECD Nuclear Energy Agency

8:50 - 10:35 CEST: Session I - GPU techniques in RT algorithms 

Chair: Dr Robert GROVE, Section Head Nuclear Modeling and Simulation Development and Deployment, Oak Ridge National Laboratory, United States & Chair of the NEA Expert Group on the Physics of Reactor Systems (EGPRS)

Keynote speakers:

• Dr Steven HAMILTON, Nuclear Energy and Fuel Cycle Division, Oak Ridge National Laboratory, United States
• Prof Christoper PAIN, Head of the Applied Computation and Modelling Group (AMCG) & Professor at the Department of Earth Science and Engineering, Imperial College London, United Kingdom
• Dr Michael BUSSMANN, Founding Manager Center for Advanced Systems Understanding (CASUS), Helmholtz-Zentrum Dresden-Rossendorf, Germany

11:05 - 12:50 CEST: Session II - Code management 

• Developing and restructuring codes
• Implementing continuous integration/continuous testing
  • Pre- and post-processing aspects
  • Synergies by international test case databases (e.g. continuous testing based on SINBAD, ICSBEP, IRPhE)

Chair: Dr Rosaria VILLARI, Technical Unit for Nuclear Fusion, ENEA Frascati Research Center, Italy

Keynote speakers:

• Dr Robert FROESCHL, Radiation Protection, CERN
• Prof Paul SMITH, ANSWERS Technical Director, JACOBS  & Visiting Professor at Imperial College and at the Nuclear Futures Institute in Bangor University,  United Kingdom
• Dr William A. WIESELQUIST, DOE National Technical Director DNCSH Project and Director SCALE Code System, Oak Ridge National Laboratory, United States

14:20 - 16:30 CEST: Session III - Geometry descriptions in RT applications 

• Challenges and state-of-the art in CAD modelling
• Availability of geometry converters
• Time dependent modelling

Chair: Steven LILLEY, Neutronics group leader, Science and Technology Facilities Council, Rutherford Appleton Laboratory, United Kingdom

Keynote speakers:

• Prof Hiroshi IWASE, Radiation Science Center, KEK Applied Research Laboratory, Japan
• Prof. Antonio Jesus LOPEZ REVELLES, Associate professor of Nuclear Engineering, Universidad Nacional de Educación a Distancia, Spain
• Dr Alberto PREVITI, Nuclear Department, ENEA, Italy
• Dr. Patrick C Shriwise, Assistant Computational Scientist, OpenMC & DAGMC Developer, Argonne National Laboratory, United States

17:00 - 18:15 CEST: Session IV - Extended reality for RT applications

Chair: Dr Anna Ferrari, Senior Physicist, Helmholtz-Zentrum Dresden-Rossendorf, Germany

Keynote speakers:

• Dr Oskari Ville PAKARI, Research Fellow, University of Michigan, USA & École Polytechnique Fédérale de Lausanne, Switzerland 

18:15 CEST:  Workshop wrap-up

The meeting was co-located with the SATIF-16 workshop and hosted by INFN Laboratori Nazionali di Frascatit at Frascati, Italy.

The event was open to participants from NEA member countries, the European Commission, and the International Atomic Energy Agency.