Testing materials for the extreme conditions of thermonuclear fusion energy

Testing materials designed to withstand conditions similar to those inside stars is one of the greatest challenges facing modern science. At the HELCZA facility in Pilsen, we are testing whether components for fusion reactors can withstand extreme thermal loads, thereby bringing the practical application of nuclear fusion one step closer.

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CVŘ and Framatome Strengthen Strategic Cooperation

Research Centre Řež and Framatome have confirmed a strategic partnership focused on the safe and sustainable operation of the LVR‑15 and LR‑0 research reactors. The cooperation builds on more than ten years of joint research in nuclear safety and fuel development.

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Take Advantage of Open Access to the CICRR Infrastructure

The CICRR research infrastructure welcomes scientific teams from both the Czech Republic and abroad, offering exceptional capabilities for experimental research in nuclear technologies, materials engineering, physics, and other fields.

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About the Research Centre Řež

The main mission of the company is research, development and innovation in the field of energy, especially nuclear energy. For this purpose, it has significant research and experimental infrastructure, including the LVR-15 and LR-0 research reactors and technology loops.

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Research and services

Research focus

Our research and development is focused on nuclear energy, reactor physics and technology, chemistry and materials and is used to support and service Czech and foreign organisations.  The RCR is a research organisation according to Act 130/2002 Coll.

Published

We present to you large research infrastructures - LVR-15, LR-0 and JHR-CZ reactors, complemented by systems of supporting laboratories and research facilities.

CICRR - Czech International Centre of Research Reactors

The basic mission of the journal, Jaderná Energie/Jadrová Energia (Nuclear Energy), is to contribute to sustaining the high standards of nuclear safety when using nuclear energy for non-war purposes. The journal is published in the Czech and Slovak languages; selected scientific and technical articles, abstracts and annotations are also published in English. The journal is released four times per year, with 400 printed copies available, and in an electronic format that is available on this website, free of charge.

Journal Jaderná energie / Jadrová energia

Energy Well is a patented small modular reactor developed by the Research Center Řež. The project uses the latest knowledge in the field of salt smelting technologies that come from the Czech Republic, thanks to grants from the Ministry of Industry and Trade.

Energy well project

High Energy Load Czech Assembly is an experimental facility for cyclic high-heat-flux loading of components.

HELCZA

We work together

Involvement in national and international projects, associations and consortia provides the company with important links to knowledge platforms. The cooperation of individual members, both at the organisational and staff level, is a prerequisite for disseminating knowledge and promoting general awareness of current research topics in the energy sector.

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News

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Blog

Testing materials for the extreme conditions of thermonuclear fusion energy

Testing materials designed to withstand conditions similar to those inside stars is one of the greatest challenges facing modern science. At the HELCZA facility in Pilsen, we are testing whether components for fusion reactors can withstand extreme thermal loads, thereby bringing the practical application of nuclear fusion one step closer.

We contributed to the creation of a new edition of the "golden standard" for nuclear data

Research Center Řež contributed to the development of a new version of one of the world’s most important nuclear data libraries. In May 2026, the ENDF/B-VIII.1 update was published; it has long been regarded as the “golden standard” for computational simulations in nuclear engineering and physics.

Press Releases

CVŘ and Framatome Strengthen Strategic Partnership in the Field of Safe and Sustainable Operation of Research Reactors

Research Centre Řež and Framatome have confirmed a strategic partnership focused on the safe and sustainable operation of the LVR‑15 and LR‑0 research reactors. The cooperation builds on more than ten years of joint research in nuclear safety and fuel development.