EuPRAXIA Conceptual Design Report published in the European Physical Journal

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Visualisation of the future EuPRAXIA facility. (Image: EuPRAXIA)

In 2015 an international consortium of 41 laboratories was created with the objective of designing a new European plasma accelerator infrastructure. The project EuPRAXIA – funded by the EU – would become the world’s first electron accelerator for users based on plasma technology. 

The EuPRAXIA consortium culminated its work last year with the submission of a Conceptual Design Report (CDR) to the European Commission. The EuPRAXIA CDR has now been made publicly available with its publication in the European Physical Journal Special Topics

With more than 600 pages and 250 contributors, the CDR is a lasting milestone for novel plasma accelerators, the fruit of an outstanding collaborative, interdisciplinary and multi-institutional effort in which our Physics Department has had a key role. Members of the QUASAR Group have been involved in the design of the beam diagnostic systems and have led the international communication of the project.  

The report contains a detailed description of the EuPRAXIA Infrastructure, the laser systems, RF accelerators, and plasma injectors for both a laser-driven and a beam-driven plasma accelerator, as well as the magnets, beam transport and diagnostic systems needed to drive a Free Electron Laser. It includes the description of the experiments and simulations that underpin the design. The report also contains a thorough analysis of the opportunities of EuPRAXIA for innovation, and the preliminary models for project implementation, cost and schedule that would allow operation of the full EuPRAXIA facility within 8 – 10 years.

The EuPRAXIA project offers a significant reduction in size and possible savings in cost over current state-of-the-art radiofrequency-based accelerators. The foreseen electron energy range of 1 to 5 GeV and its performance goals will enable versatile applications in various domains. This includes studies of materials, bacteria and viruses with X rays and particle beams generated in the compact EuPRAXIA facility. The plans of EuPRAXIA include the setup of Europe’s most Southern free-electron laser in the Metropolitan area of Rome. “This will support European science and innovation in new areas and will provide much needed opportunities for the next generation of scientists”, says coordinator Ralph Assmann.

The EuPRAXIA consortium has now signed an agreement for the next phase of the project with 40 member institutes and 10 observers from 15 countries. In parallel EuPRAXIA has applied to the ESFRI roadmap process for European research infrastructures, supported by five European countries at government level with Italy as lead country. The project has been found eligible for the ESFRI roadmap update in 2021 and is presently under ESFRI review for a decision in late Spring or Summer 2021.

The report can be found in: 

  1. W. Assmann et al., “EuPRAXIA Conceptual Design Report”, Eur. Phys. J. Special Topics 229, 3675 – 4284 (2020).


This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 653782.