EuPRAXIA_PP Final Meeting 2026 and EuPRAXIA_DN Conference

Sep 20, 2026, 9:00 AM → Sep 26, 2026, 8:00 PM Europe/Rome

Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy

Antonio Falone (Istituto Nazionale di Fisica Nucleare), Massimo Ferrario (Istituto Nazionale di Fisica Nucleare)

The EuPRAXIA Preparatory Phase (EuPRAXIA_PP) project will hold its 2026 Annual Meeting alongside the final conference of the EuPRAXIA Doctoral Network at the Hotel Hermitage on the beautiful island of Elba, Biodola Bay in Italy from Sunday 20 to Saturday 26 September 2026.

 

 

The detailed agenda of the workshop is still under preparation, but the main concept is to bring together, within the same week, the two final meetings of the European projects EuPRAXIA_Preparatory_Phase and EuPRAXIA_Doctoral_Network. 

The program will combine the usual work package reports with presentations from doctoral students, as well as additional scientific oral and poster contributions.

Confirmed Invited Speakers:

• Robert Babjak, U Lisbao
• Chiara Badiali, IST, Lisbon, Portugal
• Bifeng Lei, U Liverpool
• Francesco Massimo, LPGP-CNRS-Université Paris Saclay
• Vittoria Petrillo, INFN
• Luca Serafini, INFN

EuPRAXIA-PP_powerpoint-template.pptx

Scientific_Programme_20260729.pdf

Sun, September 20

4:00 PM → 7:00 PM Arrival

7:00 PM → 8:30 PM Welcome cocktail

8:30 PM → 10:30 PM Dinner

Mon, September 21

9:00 AM → 10:30 AM Welcome Session

9:00 AM Opening remarks

Zoom link: https://infn-it.zoom.us/j/83877965100

Speaker: Massimo Ferrario (Istituto Nazionale di Fisica Nucleare)

Welcome 2026.pptx

9:15 AM EuPRAXIA PP Status Update

Speaker: Pierluigi Campana (Istituto Nazionale di Fisica Nucleare)

EuPRAXIA GM 20260921.pdf

9:35 AM EuPRAXIA DN Status update

Speaker: Carsten Peter Welsch

EuPRAXIA-DN Elba.pptx

9:55 AM PACRI Status Update

Speakers: Gerardo D'Auria (Elettra), Gerardo D'Auria (Elettra-Sincrotrone Trieste)

GdA_Eupraxia meeting Elba 21-09-26.pptx

10:10 AM EuPRAXIA EIPP overview

Speaker: Antonio Falone (Istituto Nazionale di Fisica Nucleare)

EuPRAXIA EIP.pdf

10:25 AM Q&A

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 11:30 AM Invited Talk

11:00 AM Spectral phase control for optimized ionization injection in laser wakefield acceleration

A recent experiment at the Lund Laser Centre (LLC) has demonstrated that tailoring the temporal structure of the driver laser pulse via spectral phase manipulation can significantly enhance the quality of electron beams produced through Laser Wakefield Acceleration (LWFA) with ionization injection.
Reproducing the experimentally identified optimum required high fidelity numerical modeling, including accurate reconstruction and integration in Particle in Cell simulations of both the transverse distribution and temporal structure of the laser field. This talk will focus on how this comprehensive modeling approach provided physical insights into the effects of the laser spectral phase, highlighting the potential for advanced LWFA schemes generating electron beams optimized also through spectral phase control.

Speaker: Francesco Massimo (LPGP - CNRS)

FMassimo_Slides_EuPRAXIA_PP_Meeting_EuPRAXIA_DN_Conference_21_09_2026.pdf

FMassimo_Slides_EuPRAXIA_PP_Meeting_EuPRAXIA_DN_Conference_21_09_2026.pptx

11:30 AM → 12:30 PM EuPRAXIA DN: Theory and Simulation

11:30 AM Status of the LPA EuPRAXIA@Beamlines TDR simulations and next steps

A summary of the latest working points for the LPA module of the start-to-end simulation activities for the EuPRAXIA@Beamlines TDR preparation will be given. Next steps towards high-fidelity PIC simulations based on accurate laser and plasma input parameters will be discussed. Finally, preliminary results based on high-brightness plasma-photocathode schemes (hybrid, ReMPI) obtained with the upgraded L2-DUHA baseline parameters will be shown.

Speaker: Paolo Tomassini (ELI-BL, ELI-NP)

EuPRAXIA_PP LPA 26 - final.pptx

11:50 AM Orbital angular momentum of superradiant light in nonlinear Thomson scattering

Plasma wakefield accelerators (PWA) provide a compact way of generating monoenergetic ultrarelativistic particles making them strong candidates for next-generation light sources. One of the most consolidated methods of X-ray generation in these accelerators is based on nonlinear Thomson scattering where relativistic electrons interact with a counter or copropagating intense laser pulse. Beyond brightness, structured light carrying orbital angular momentum (OAM) is highly sought after with many applications across science and technology. Conventional approaches to generating OAM beams typically rely on additional beam-shaping optics. By contrast, the present scheme imprints OAM directly during the nonlinear Thomson scattering process through the interaction geometry.

In this work, we use 3D PIC simulations to investigate nonlinear Thomson scattering of a relativistic electron bunch interacting with an azimuthally polarised laser pulse. We show that the laser field topology induces electron microbunching at the optical wavelength producing superradiant emission extending into the EUV and soft X-ray range. We further demonstrate that the emitted radiation carries OAM with an azimuthal mode index of l≈1, observed across the first few harmonics and arising directly from the interaction between the electrons and the laser. These results demonstrate a compact source of coherent short-wavelength radiation with OAM.

Speaker: Bhushan Thakur (Instituto Superior Tecnico, Lisbon)

Talk_elba_bhushan.pdf

12:10 PM Overcoming space-charge limitation to enable wakefield-driven free-electron lasers in the x-ray regime

Free-electron lasers (FELs) generate intense ultrashort radiation from the infrared to angstrom wavelengths and are central to next-generation light sources. Plasma-based accelerators are promising FEL drivers because they can produce relativistic, high-quality electron beams with ultrahigh peak currents and accelerating gradients, potentially enabling compact FELs with much shorter undulators and reduced facility footprints. Although exponential FEL gain has been experimentally observed using wakefield-accelerated beams, saturation has not yet been demonstrated.

Studying this regime requires simulations that resolve nanometre-scale radiation over metre-scale undulators while self-consistently modelling collective beam effects such as space charge, which is computationally impractical in the laboratory frame. Using Lorentz boosted frame particle-in-cell simulations, we model FEL evolution self-consistently, including radiation generation, beam dynamics, and space charge effects.

Our results show that space charge fundamentally limits FEL saturation in ultrashort, high-current wakefield-accelerated beams by suppressing microbunching growth. In contrast, longer electron bunches can reach saturation with bunching factors exceeding 0.4. Applying this framework to a conceptual multi-GeV wakefield-driven x-ray FEL, we demonstrate sub-nanometre FEL saturation, while confirming that performance remains highly sensitive to initial bunch length. These findings identify space charge as the key limitation and define conditions for compact x-ray FELs.

Speaker: Runfeng Luo (Imperial College London)

runfeng eupraxia.pptx

12:30 PM → 4:00 PM Lunch

4:00 PM → 4:15 PM Coffee Break

4:15 PM → 4:45 PM Invited Talk

4:15 PM Plasma Accelerator For Decaying Particles

Short-lived particles such as muons and pions are attractive candidates for future high-energy physics or societal applications but require rapid acceleration before significant decay occurs [1]. We present a plasma wakefield acceleration scheme based on subluminal spatio-temporal (ST) laser pulses and tailored plasma-density profiles capable of accelerating initially subrelativistic particles to relativistic energies over millimetre-scale distances [2]. ST drivers, enabled by recent advances in flying-focus and space-time wave-packet engineering [3,4], generate wakefields with controllable phase velocities below the speed of light. By combining these drivers with tailored density profiles, the wake phase velocity can be continuously matched to the evolving particle velocity, extending phase locking and mitigating dephasing.

Particle-in-cell simulations demonstrate sustained acceleration of muons, pions and kaons from subrelativistic to relativistic energies. Particular emphasis is placed on the design of subluminal ST drivers, including wakefield resonance conditions governing efficient wake excitation and stable propagation in plasma

[1] K. R. Long et al., Nat. Phys. 17, 289 (2021).
[2] C. Badiali et al., Phys. Rev. Res. 8, 023077 (2026).
[3] A. Sainte-Marie et al., Phys. Rev. Lett. 119, 205001 (2017).
[4] H. E. Kondakci and A. F. Abouraddy, Nat. Photon. 11, 733 (2017).

Speaker: Chiara Badiali

elba2026.pptx

4:45 PM → 5:25 PM EuPRAXIA DN: Theory and Simulation

4:45 PM Study and optimization of EuPRAXIA@SPARC_LAB working point

A reference working point for the EuPRAXIA@SPARC_LAB plasma acceleration stage has been defined in the Technical Design Report using fluid simulations. In this work, we study in detail this configuration through a detailed comparison between full PIC simulations, fluid model, and analytical Lu–Golovanov predictions.

The analysis shows that different numerical descriptions predict comparable witness evolution but significantly different longitudinal accelerating fields. This leads to model-dependent beam loading and energy-spread growth. By studying the plasma bubble geometry, we identify differences in bubble length and radial structure to further explore the differences between the models.

These results highlight the sensitivity of the EuPRAXIA@SPARC_LAB working point to the detailed wakefield structure and motivate a systematic optimization of driver charge, plasma density, and driver–witness distance. The proposed workflow provides a robust basis for future numerical optimization of beam quality in EuPRAXIA-like plasma stages.

Speaker: Gianmarco Parise (Istituto Nazionale di Fisica Nucleare)

Elba_presentation.pdf

Elba_presentation.pptx

5:05 PM Towards a Plasma Undulator Experiment at SPARC_LAB

Plasma-based undulators offer a promising route toward compact radiation sources by exploiting the betatron motion of relativistic electrons in an ion channel. A proof-of-principle experiment is being developed at SPARC_LAB, within the EuPRAXIA@SPARC_LAB project, to investigate this concept under experimentally realistic conditions. Previous studies assessed ion-channel formation and the radiation emitted by a matched witness bunch, identifying beam quality and transverse matching as key requirements for the observation of enhanced betatron radiation and FEL-like amplification. Building on these results, we present ongoing studies toward the experimental implementation of the scheme. Particular attention is devoted to identifying suitable accelerator working points for the generation and transport of the required driver-witness beam configuration and to evaluating the radiation expected from realistic electron beam distributions.

Speaker: Carlos Buitrago (Istituto Nazionale di Fisica Nucleare)

eupraxiaPP26-buitrago-final.pdf

5:25 PM → 6:10 PM EuPRAXIA PP: WP2

Conveners: Carsten Peter Welsch, Susanna Bertelli (LNF)

5:25 PM EuPRAXIA PP's dissemination and public relations

WP2 has established EuPRAXIA PP’s dissemination and public relations as a strategic, multi-audience program. It has successfully delivered a number of communication tasks, including regular updates of the project website, the revised dissemination, exploitation and communication plan, the EuPRAXIA brochure and visual materials, and the EuPRAXIA Symposium and outreach event, while also progressing the project's seminar series, news and feature articles, FAQs, LinkedIn presence, internal resources and the quarterly EupraXia Files newsletters. These activities continue to support consistent communication to the general public, the scientific and user communities, industry, policy makers and funding agencies.
A major outcome has been targeted stakeholder engagement. The BSBF satellite event in Trieste and the Innovations for a Sustainable Tomorrow Symposium in Liverpool connected EuPRAXIA with industry, technology-transfer and funding opportunities; industry booths at flagship events such as IBIC 2025 and IPAC'26 presented project outcomes to the accelerator community, while the EuPRAXIA Showcase in Brussels provides a dedicated policy-maker and EU-stakeholder engagement platform to present project outcomes, highlight synergies across EuPRAXIA-related initiatives and identify future funding opportunities. Together with public events, school and festival activities, and new reusable outreach resources, WP2 has significantly strengthened EuPRAXIA’s visibility, user readiness, industrial relevance and political profile.

Speakers: Prof. Carsten Welsch (University of Liverpool), Susanna Bertelli (LNF)

EuPRAXIA PP Final Meeting - WP2.pptx

6:00 PM Q&A

6:10 PM → 6:35 PM EuPRAXIA PP: WP3

Conveners: Andrea Ghigo (Istituto Nazionale di Fisica Nucleare), Arnd Specka (LLR - Ecole Polytechnique - CNRS/IN2P3)

6:10 PM WP3 - Rules and regulations

The activity of the work package devoted to the organization of the EuPRAXIA project with the the establishment of the governing bodies that regulate the development and smooth running of the project will be described.

Speaker: Andrea Ghigo (Istituto Nazionale di Fisica Nucleare)

WP3 EuPRAXIA final meeting V4.pdf

6:30 PM Q&A

6:35 PM → 6:50 PM Q&A

8:30 PM → 10:30 PM Dinner

Tue, September 22

9:00 AM → 9:30 AM Invited Talk

9:00 AM Single-laser scheme for reaching strong field QED regime via direct laser acceleration

Up-to-date approaches to studying QED processes using strong lasers rely on the electron acceleration by conventional accelerators or by the laser wakefield acceleration (LWFA). Whilst this approach is experimentally feasible and benefits from the vast experience of the community in the LWFA technique, laser-electron synchronization and temporal envelope evolution can pose a significant challenge.

We propose a single-laser scheme based on direct laser acceleration in a gas that can serve as an alternative. At first, an intense laser pulse propagates in the gaseous plasma and accelerates electrons. After several millimeters of propagation, the laser pulse reflects from the overdense foil and interacts with accelerated electrons during the head-on collision. Electrons emit high-energy photons via nonlinear Compton scattering and are consequently converted into electron-positron pairs in the strong field of the laser.

This setup introduces several advantages. At first, the laser pulse is steepened during propagation in gas, which enables electrons to interact directly with the highest laser intensity region. Furthermore, reflection from the plasma mirror ensures the spatial synchronization of electrons and a laser. We observe that reaching quantum parameter chi=1 is possible by 2 PW lasers, making interaction in the strong field QED regime experimentally accessible.

Speaker: Robert Babjak (GoLP/IPFN - Instituto Superior Técnico)

eupraxia_2026_babjak.pptx

9:30 AM → 10:30 AM EUPRAXIA DN: Plasma-based Accelerators and New Concepts

9:30 AM FACET II research relevant to EuPRAXIA

The FACET-II user facility at SLAC National Accelerator Laboratory conducts a broad science program based on the interaction of low-emittance high-current 10 GeV electron beams with lasers, plasmas and solids with a stark focus on research advancing beam-driven plasma wakefield acceleration.
We will highlight and discuss recent results obtained at FACET-II with relevance to EuPRAXIA, such as the generation of high-brightness electron beams at transformer ratio >1 , efficient plasma acceleration with percent-level field uniformity, generation of 100-kA beams, femtosecond-resolution beam diagnostics, and inverse Compton scattering in the nonlinear regime. We will also discuss light-source perspectives at FACET-II.

Speaker: Alexander Knetsch (SLAC National Accelerator Laboratory)

announcement_PAC.pdf

Knetsch_eupraxia.pdf

9:50 AM Toward stable high-repetition-rate plasma-wakefield acceleration: source development, accelerator stabilization, and machine-learning jitter analysis

Plasma-wakefield accelerators can sustain GV/m-scale gradients, but shot-to-shot reproducibility remains a major obstacle to user-oriented operation. Addressing this issue requires progress at three levels: source reliability, discharge stabilisation, and quantitative diagnosis of the residual jitter.

Source reliability was first established on a stand-alone test bench. A 3 cm Shapal ceramic capillary was operated at 100 Hz and above, showing stable plasma-density conditions and no observable channel degradation over more than 20 million shots.

Discharge stabilisation was then investigated on the SPARC_LAB plasma-acceleration beamline. Laser-triggered operation reduced discharge fluctuations from about 10% to 1%, cutting the fraction of empty shots from about 45% to 0.5% and reducing the witness-energy jitter by a factor of five.

With the main macroscopic instabilities reduced, the residual jitter was studied on a dataset of about 941 shots, covering six working points and 19 measured machine features. An in-depth machine-learning analysis identifies the injected charge as the dominant driver of witness-energy fluctuations, while the witness energy-spread jitter is not predictable from the measured machine state.

Speaker: Romain Demitra (Istituto Nazionale di Fisica Nucleare)

Elba2026_v02.pptx

10:10 AM Ionization Injection in Laser Wakefield Acceleration driven by Few Cycle pulses

Waveform control of laser pulses can allow a high degree of control on electron injection dynamics. When a few-cycle (~9 fs), multi-terawatt laser pulse is used to drive laser wakefield acceleration in a helium–nitrogen gas mixture, Ionization injection becomes sensitive to the evolving carrier-envelope phase (CEP) of the laser pulse. This leads to the formation of electron spectra composed of multiple quasimonoenergetic peaks with regular narrow energy spacing. We demonstrate the first experimental observation of comb-like energy structure resulting from periodic ionization injection triggered by successive half-cycles of the laser electric field. This opens a new path toward attosecond-scale control in laser-plasma acceleration.

Speaker: Flanish D'Souza (Department of Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden)

Flanish_Elba.pptx

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 11:30 AM Invited Talk

11:00 AM Coherent Synchrotron Radiation by Excitation of Surface Plasmon Polariton on Near-Critical Solid Microtube Surface

Coherent synchrotron radiation (CSR) represents a unique regime of electromagnetic (EM) radiation emitted when relativistic charged particles—typically electrons—undergo accelerated motion in a collective, spatially ordered configuration. Its exceptional properties, such as high brightness and broadband emission, offer significant advantages for a broad range of applications. Our recent research on relativistic laser-surface plasma interaction has revealed the significant potential of generating extremely strong (~TV/m) fields for particle acceleration and modulation.
In this talk, I will present our recent results on coherent synchrotron radiation by excitation of surface plasmon polariton on the near-critical solid microtube surface, which provides a new mechanism for generating CSR in the form of generalised superradiance. We can further demonstrate that by improving the azimuthal symmetry of these electrons, the helical modulation enables CSR emission across all azimuthal directions in the form of isolated harmonics, significantly enhancing radiation intensity even when full coherence is imperfect. In comparison to the laser plasma wakefield acceleration (LWFA)-based sources, our scheme offers distinct advantages in terms of coherence, resulting in a significantly higher photon flux per electron and brightness. Its unique properties also make our scheme a compelling alternative to FELs for applications where they remain impractical.

Speaker: Bifeng Lei (University of Liverpool)

Bifeng Lei_EuPRAXIA2026.pptx

11:30 AM → 12:30 PM EUPRAXIA DN: Plasma-based Accelerators and New Concepts

11:30 AM Plasma Injector for Synchrotron Light Sources

DESY is pursuing an ambitious laser-plasma injector option for its future PETRA IV synchrotron light source. The plasma injector will deliver 6 GeV electron beams for direct injection into the storage ring, promising a significant reduction in footprint and energy consumption. We will present the development roadmap towards direct storage ring injection and discuss technology challenges. Furthermore, we will present first results from a recent experimental campaign towards a prototype plasma injector for the PETRA III storage ring operated by DESY.

Speaker: Andreas Maier (DESY)

ARMaier_PlasmaInjector_20260922_private.pdf

11:50 AM EuPRAXIA laser development status and outlook

Here we discuss the current status and progress in the development of the L2-DUHA laser. We present results from pump laser profile tuning, first amplification from the OPCPA, and provide information about the state of readiness of the KAZI pump laser (DiPOLE100) at ELI and steps toward integrating it into the L2-DUHA system. Finally we discuss the roadmap toward 3J, 100Hz and the EuPRAXIA target 5J, 100Hz performance.

Speaker: Tyler Green (ELI - Beamlines)

07 EuPRAXIA-PP_Green.pptx

12:10 PM Start-to-End Simulation for a Laser-Plasma-Driven EUV Free-Electron Laser at ELI ERIC

Recent progress in laser-plasma accelerators (LPAs) has demonstrated the ability to produce high-quality electron beams characterised by high peak currents and low emittance, making them suitable for compact, next-generation free-electron lasers (FELs). However, the large angular divergence and energy spread of LPA-generated electron beams introduce significant challenges for efficient beam transport and overall FEL performance. Full end-to-end simulations, from laser-plasma acceleration to FEL generation, were performed to evaluate beam transport and FEL performance in the extreme ultraviolet (EUV) regime.

The electron beam parameters at the LPA source were determined through laser-plasma interaction simulations. The dedicated electron-beam transport was designed to deliver the bunch to the undulator entrance while avoiding beam-quality degradation. Finally, Self-Amplified Spontaneous Emission (SASE) FEL modelling was carried out using the resulting beam parameters. The simulations show that FEL saturation is reached within the required 4 m undulator length, demonstrating the feasibility of a compact EUV light source.

These results mark a significant step towards developing compact LPA-based FELs, and are crucial for the future LPA-based FEL beamline at ELI ERIC in the Czech Republic within the EuPRAXIA project

Speakers: Mihail MICESKI, Mihail MICESKI

EuPRAXIA-DN_ELBAconf_Mihail-Miceski_new.pdf

12:30 PM → 12:40 PM Group Photo

12:40 PM → 4:00 PM Lunch

4:00 PM → 4:15 PM Coffee Break

4:15 PM → 5:00 PM EuPRAXIA PP: WP4

Convener: Antonio Falone (Istituto Nazionale di Fisica Nucleare)

4:15 PM WP4 - Legal Framework, Financial Model and Socio-Economic Impact Summary

he EuPRAXIA Preparatory Phase Work Package 4 addressed the strategic, legal, financial and socio-economic foundations required for the long-term implementation of the EuPRAXIA Research Infrastructure. The work focused on evaluating governance options, developing a sustainable financial model, assessing socio-economic impacts, and defining the legal framework needed to support the transition from a collaborative project to a permanent European research infrastructure. This presentation summarizes the main outcomes of WP.4, including the comparative assessment of legal entity options, the proposed governance and funding approach, and the methodology adopted to evaluate the scientific, technological and societal benefits of EuPRAXIA. The results provide a key contribution to the successful implementation of the infrastructure and its long-term sustainability within the European research landscape.

Speaker: Antonio Falone (Istituto Nazionale di Fisica Nucleare)

WP-4_Falone.pdf

4:50 PM Q&A

5:00 PM → 5:45 PM EuPRAXIA PP: WP5

Conveners: Dr Emiliano Principi, Francesco Stellato (Istituto Nazionale di Fisica Nucleare)

5:00 PM User strategy and experiments for the EuPRAXIA x-ray FEL facilities

This contribution reports on the latest milestones and deliverables of WP5, focusing specifically on the Service Catalogue and Terms of Service documents, which define the foundational regulatory framework for the future EuPRAXIA user community.
In addition, based on the FEL parameters outlined in the Technical Design Report, we provide a preliminary conceptual analysis of the experiments feasible during the early operation phase of EuPRAXIA@SPARC_LAB.
Defining a strategic approach to attract scientific users to EuPRAXIA FEL facilities is a critical goal. To this end, we argue that plasma-based FEL infrastructures during the early operation phase should complement rather than compete with conventional x-ray FEL sources. Accordingly, upcoming pilot experiments should leverage the initial photon parameters of the plasma-driven sources to pioneer specific classes of measurements still unexplored by established facilities.

Speaker: Dr Emiliano Principi

5:35 PM Q&A

5:45 PM → 6:30 PM EuPRAXIA PP: WP6

Conveners: Andrea Mostacci (Sapienza), Brigitte CROS (LPGP-CNRS-UP11)

5:45 PM Summary of the activity of WP06 – Membership Extension Strategy

EuPRAXIA is a leading initiative in plasma-based accelerator development, with growing international visibility and the potential to become a global hub for advanced accelerator science, training, and innovation.

Outreach activities pursued within Work Package 6 highlighted strong interest in collaboration, training programmes, and the development of compact, cost-effective accelerator technologies, particularly for regions with limited access to large-scale infrastructures.

Overall, EuPRAXIA is positioned as both a testbed for next-generation accelerators and a platform for global collaboration, with future progress relying on strengthened partnerships, expanded training, and broader international engagement.

Speakers: Prof. Andrea Mostacci (Sapienza, University of Rome), Andrea Mostacci (Istituto Nazionale di Fisica Nucleare)

20260921_WP6_out.pptx

6:00 PM Perspective of Plasma accelerators for high energy physics

All applications of plasma-based accelerators (PBAs) other than to research, require not only the accelerator to produce the desired "single bunch" parameters (charge, energy, relative energy spread, emittance, etc.), but also require reproducibility over long periods of time (a workday or 24/7), most often at high repetition rate. This puts enormous constraints on the driver (laser pulse or particle bunch), on the plasma source and its components (vacuum, pulsed power, cooling, etc.), as well as on diagnostics and on the control system.
In this presentation I will discuss general requirements for applications of PBAs to fields that require high-energy beams (multi-GeV), such as particle physics and high-energy physics. I will attempt to identify particular topics EuPRAXIA could make significant contributions to.

Speaker: Patric Muggli

EuPRAXIA2026Muggli.pdf

EuPRAXIA2026Muggli.pdf

6:30 PM → 6:45 PM Q&A

8:30 PM → 10:30 PM Dinner

Wed, September 23

9:00 AM → 9:45 AM EuPRAXIA PP: WP7

Conveners: Ricardo Fonseca (Instituto Superior Técnico, Universidade de Lisboa), Stefano Pioli (Istituto Nazionale di Fisica Nucleare)

9:00 AM Work Package 7: e-needs and data policy

We present the final outcomes of Work Package 7 on e-needs and data policy within the EuPRAXIA-PP project, outlining the strategy and conceptual design for managing the extensive data ecosystem required for EuPRAXIA's operational phase. EuPRAXIA will generate very large and complex datasets from its advanced plasma-based accelerator facilities, while operating under the European Commission's Open Science and FAIR data mandates. Building on earlier benchmarking activities and deliverables, we propose an integrated data policy, aligned with EU and EOSC recommendations, which is based on the PaNOSC FAIR framework. We define responsibilities for data curation, persistent identification, metadata quality, data publication, and long-term stewardship. A three-tier e-infrastructure is proposed to support high-rate data acquisition, real-time user feedback, on-site processing, and transfer to trusted repositories for long-term preservation and open dissemination. We also identify functional and non-functional requirements for this infrastructure, estimate resource needs, and highlight key risks and open decisions. Together, these outcomes provide a foundation for the future EuPRAXIA data ecosystem, ensuring sustainability, interoperability, and FAIR compliance.

Speaker: Ricardo Fonseca (Instituto Superior Técnico, Universidade de Lisboa)

EuPRAXIA-PP WP7 Fonseca.pdf

EuPRAXIA-PP WP7 Fonseca.pptx

9:35 AM Discussion

9:45 AM → 10:30 AM EuPRAXIA PP: WP8

Conveners: Henri Vincenti, Jorge Vieira (Instituto Superior Técnico)

9:45 AM Overview of WP8 activities.

This talk provides an overview of the activities of the theory and simulation work-package in EuPRAXIA-PP, with an emphasis on recent numerical simulations relevant for the laser-driven EuPRAXIA pillar at ELI. A precise description of the initial laser and plasma conditions are important to ensure agreement between particle-in-cell simulation predictions and experiments. Hence, we will briefly revise the novel tools developed to inject realistic laser and plasma profiles in simulations. The EuPRAXIA facility is planned to operate at high-repetition-rates, of 100 Hz or higher. The high-repetition-rates brings new challenges to the design of the plasma source, that needs to be robust against energy-deposition to prevent damage. We will then summarize our conclusions about the adequacy of the different plasma source technologies to facility operation at high repetition rate. Finally, we describe simulations that show the generation of (near) FEL-grade electron beams with shock-injection at ELI. We complement these simulation results with numerical predictions of FEL-radiation by injecting the beams from our PIC simulations into an FEL-radiation code.

Speaker: Jorge Vieira (Instituto Superior Técnico)

EuPRAXIA_WP8_final_v2.pdf

EuPRAXIA_WP8_final_v2.pptx

10:05 AM Start-to-end modelling for realistic design of plasma accelerator systems

Designing plasma accelerators for demanding applications requires modelling the complete system, from realistic plasma and driver conditions to acceleration, beam transport and the final beam delivered to the application. We present a start-to-end (s2e) modelling approach combining electromagnetic and quasistatic particle-in-cell simulations, hydrodynamic simulations for plasma shaping, beam dynamics, with optimisation and statistical studies. The framework allows realistic input distributions, shot-to-shot fluctuations and component tolerances to be propagated through the accelerator, providing a quantitative connection between plasma-accelerator physics and system-level performance. The methodology is illustrated by ongoing design studies of plasma-based injectors for synchrotron light sources, including the PETRA IV injector concept, where S2E simulations are used to optimise energy spread, stability, transverse beam quality and transport into the storage ring. Beyond numerical system design, these pipelines also provide a bridge to analytical and theoretical studies of plasma accelerators. We will also discuss their application to plasma-based collider designs.

Speaker: Maxence Thévenet (DESY)

Eupraxia.PP.theory.sim.pptx

Eupraxia.PP.theory.sim.pptx

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 11:45 AM EuPRAXIA PP: WP9

Conveners: Federico Nguyen (ENEA), Sergey Antipov

11:00 AM WP9 Summary

This talk provides a brief overview of WP9 activities in the field of undulators, rf, magnets and beamline components.

Speaker: Federico Nguyen (ENEA)

EuPRAXIA-PP_FinalMeeting_Elba2026.pdf

11:10 AM Towards a Compact LWFA-Driven Soft X-Ray FEL at ELI ERIC: Current Status and Activities in Beamline Design and Start-to-End Simulations

The current design status of ELI-ERIC free-electron laser(FEL) beamline within the EuPRAXIA framework is presented, targeting soft X-ray photon production driven by a laser wakefield accelerator(LWFA). Compact, high-brilliance LWFA-driven FELs represent a opportunity for next-generation light sources, and ELI-ERIC site has been identified as the EuPRAXIA implementation site for this concept.
A dedicated electron beam transport line has been designed to capture and transport the LWFA beam from the plasma exit through to the undulator. The lattice comprises a capture block, a magnetic chicane for longitudinal phase-space manipulation and co-propagating laser removal, and an electrostatic-quadrupole matching section. The capture block is based on compact in-vacuum permanent quadrupole magnets with variable gaps, designed at PSI. A 20 m undulator line based on the SwissFEL U15 modules was considered to generate SASE FEL radiation in the soft X-ray regime.
The development is supported by complete start-to-end simulations, from laser-plasma acceleration through beam transport to FEL modelling. A full set of parameters for a laser-driven soft X-ray FEL has been established, providing a concrete design baseline for ELI-ERIC FEL implementation.
These results represent a significant step towards a compact, LWFA-driven soft X-ray FEL at ELI-ERIC, and demonstrate the feasibility of realising this concept.

Speaker: Mihail MICESKI

WP9-ELI-2026-EuPRAXIA-2.pdf

11:27 AM The ARIA seeded Free-Electron Laser beamline at EuPRAXIA@SPARC_LAB

The EuPRAXIA@SPARC_LAB facility will be the first plasma-driven free-electron laser user facility and will host two different beamlines: the AQUA beamline, a soft X-ray SASE Free-Electron Laser (FEL), and the ARIA beamline, a seeded HGHG FEL operating in the VUV spectral range from 50 to 180 nm.
ARIA has been conceived to extend the spectral coverage of the EuPRAXIA@SPARC_LAB FELs and has been recently co-funded by Regione Lazio: its layout, featuring a modulator followed by a dispersive section and four radiators, is here discussed starting from the undulator modules' specifications.
The operation modes of this FEL and simulations of its performance are analysed, also considering advanced multi-color operation.

Speaker: Michele Opromolla (ENEA)

ARIA 23.09.26_EupraxiaPP.pdf

ARIA 23.09.26_EupraxiaPP.pptx

11:45 AM → 12:30 PM EuPRAXIA PP: WP10

Conveners: Kevin Cassou (IJClab - CNRS/IN2P3), Dr Rob Shalloo (Deutsches Elektronen-Synchrotron (DESY))

11:45 AM Summary of WP10

The EuPRAXIA project aims to construct laser-driven and beam-driven plasma accelerator facilities delivering 1–5 GeV electron beams with RF-comparable beam quality. Achieving this depends on a high degree of control over plasma-based components and systems — not only the accelerating medium itself, but auxiliary systems for beam and laser handling.

Work Package 10 of the EuPRAXIA Preparatory Phase reviews the current status of these components, evaluating their technology readiness and highlighting where further work is needed to bring them to a level suitable for facility operation. Key questions include: what range of plasma components and systems can serve as injectors, accelerator stages, and auxiliary components; how plasma parameters can be adequately controlled and diagnosed; and how to steer the technical and scientific design toward EuPRAXIA's performance goals, particularly given the demands of high-repetition-rate operation and beamline integration.

This talk presents a summary of the work undertaken within WP10, covering this status assessment and the challenges identified.

Speakers: Kevin Cassou (IJClab - CNRS/IN2P3), Dr Rob Shalloo (Deutsches Elektronen-Synchrotron (DESY))

EuPRAXIA_PP_AnnualMeeting_WP10.pdf

11:55 AM Design of the Plasma Source for EuPRAXIA@SPARC_LAB

Towards the construction of EuPRAXIA@SPARC_LAB — the first pillar of the EuPRAXIA project and the first FEL user facility based on a beam-driven plasma wakefield accelerator (PWFA) — we present the design of the plasma source developed for the PWFA’s plasma module as part of the Technical Design Report of the project. The source consists of a 60-cm-long discharge capillary. Its geometry is designed using CFD numerical codes and features a series of gas inlets and a tapered plasma confinement channel, designed to provide a 40-cm-long plasma density plateau at the center of the capillary and two cosine-squared density ramps at the edges. The capillary geometry is validated using the Stark broadening method, which provides a complete characterization of the plasma density distribution. Long-term operation at 100 Hz is ensured by the use of high-melting-point ceramics, such as Shapal and Macor, which are respectively adopted for the capillary core and support structure. The thermal robustness of the capillary is evaluated using numerical and experimental methods, including heat transfer simulations performed with COMSOL and temperature measurements of the source taken with a thermal imaging camera. R&D activities carried out for the plasma source design are framed within the WP10 of EuPRAXIA_PP.

Speaker: Lucio Crincoli (Istituto Nazionale di Fisica Nucleare)

EuPRAXIA_PP2026 - Crincoli.pptx

12:10 PM Development of Plasma Target Systems Supported by Hydrodynamic Simulations

Plasma-based accelerators critically depend on advanced plasma target systems capable of delivering reproducible and well-controlled plasma density profiles while operating in a high-vacuum environment. Since the performance of accelerated particle beams and secondary radiation sources is highly sensitive to the plasma density distribution, accurate target design, control, and characterization are essential for future user-oriented facilities such as EuPRAXIA.

In this contribution, we present the development of plasma target systems at ELI for laser- and beam-driven plasma accelerators. Particular emphasis is placed on gas-based plasma sources with tailored density profiles optimized for injection, acceleration, and coupling stages. Hydrodynamic simulations are employed to model neutral gas flow and support the design and optimization of target geometries. The numerical results are benchmarked against experimental measurements obtained through interferometric diagnostics combined with tomographic reconstruction of the gas density distribution. The presented activities contribute to the development of reliable, high-performance plasma target technologies for next-generation plasma accelerator facilities.

Speaker: Sebastian Lorenz (The Extreme Light Infrastructure ERIC)

EuPRAXIA-PP_S.Lorenz_Development of Plasma Target Systems Supported by Hydrodynamic Simulations.pptx

12:25 PM Q&A

12:30 PM → 4:00 PM Lunch

4:00 PM → 4:15 PM Coffee Break

4:15 PM → 6:15 PM EuPRAXIA DN: Diagnostics and Instrumentation (incl machine learning)

4:15 PM From Prototype Validation to Industrialization of X-Band LLRF Systems for Future High-Gradient Linacs

Low-Level RF (LLRF) systems are essential for preserving amplitude and phase stability in high-gradient linear accelerators, where RF fluctuations directly influence beam quality, synchronization, and operational reliability. These requirements are particularly demanding for X-band linacs, where short RF pulses, high accelerating gradients, and tight timing tolerances increase sensitivity to phase noise, pulse-to-pulse variations, and thermal effects.

This talk presents the development and experimental validation of a dedicated X-band LLRF prototype developed within the EuPRAXIA Doctoral Network for next-generation compact accelerator facilities. The system combines a high-speed RF front-end with an FPGA-based digital back-end optimized for pulsed operation, low-latency processing, and precise amplitude and phase control.

Following extensive laboratory characterization, the prototype was validated in a realistic high-power RF environment at the TEX facility at INFN-LNF. The presentation will focus on recent experimental results from this testing campaign, including pulse-to-pulse stability, amplitude noise, phase noise, and comparison of the prototype contribution with the RF pre-amplifier chain. The results demonstrate low-noise X-band performance and represent a key milestone toward operation with accelerating structures.

In parallel, industrialization of the prototype is ongoing, supporting its transition from a research platform toward a robust LLRF product for future high-gradient linac applications.

Speaker: Phani Deep Meruga

X-Band LLRF_EuPRAXIA-DN_PDM.pptx

4:35 PM Study on an S-band Fast Feedback Loop Design for Femtosecond Synchronization

This work presents a theoretical and experimental study of a fast intra-pulse feedback loop for RF power stations in SPARC_LAB for plasma wakefield applications. To realize shot-to-shot stability of the beam-driven plasma wakefield accelerator, the RF phase of the accelerating field should have less than 20 fs phase jitter with respect to the facility reference master oscillator (RMO). This phase noise comes most from the modulator of the RF plant klystron. A sufficient method to suppress the noise is a fast feedback loop to correct the phase error in real time within a pulse of the klystron output. In this work, an analytical model of this fast feedback loop is given and discussed, allowing optimization of loop delay, bandwidth and phase margin under typical accelerator conditions. Guided by this model, a feedback loop is built and implemented on an S-band klystron plant in SPARC_LAB. Some dedicated measurements have been performed to investigate the loop performance. The results show that the jitter can be reduced to less than 15 fs rms with respect to the RMO, which validate the theoretical design and show that the S-band fast feedback scheme can meet femtosecond synchronization requirements for advanced plasma wakefield accelerations.

Speaker: Xianghe Fang (LNF-INFN)

EuPRAXIA-DN_FANG.pptx

4:55 PM Optimization of high-power laser wavefront in the focal region through fast Shack-Hartmann pattern analysis

High-power laser systems are enabling a wide range of applications, including particle acceleration and X/gamma-ray beam production for medical imaging and radiotherapy. For ultrashort and high-power lasers focused at relativistic intensity, the characterization of the laser wavefront after the final focusing optics, especially in the focal region, remains a challenge, with diagnostic capabilities still under active development. In this context, the ability to measure the wavefront downstream of components such as off-axis parabolic mirrors is particularly significant, as it provides direct access to the laser aberrations that ultimately govern the focal intensity distribution and laser–plasma interaction conditions.
We present a robust approach and associated metric for wavefront quality derived directly from a Shack-Hartmann wavefront measurement carried out downstream of the off-axis parabolic mirror focus, with adaptive capability to suppress the defocus contribution without affecting the remaining aberrations. The method exploits geometric features of Hartmanngrams to define a merit suitable for iterative correction algorithms. The framework was validated through both numerical simulations and experimental measurements, and furthermore, it is fully compatible with established modal wavefront reconstruction strategies, enabling direct performance comparisons and hybrid implementations. This opens a pathway toward flexible and scalable wavefront control solutions tailored for next-generation high-power laser facilities.

Speaker: David Gregocki (Intense Laser Irradiation Laboratory, CNR-INO)

ELBA_Gregocki_EuPRAXIA_DN.pdf

5:15 PM Optical Synchrotron Radiation as a Non-Invasive Diagnostic Tool for Future Plasma Accelerator Facilities

Future plasma accelerator facilities like EuPRAXIA and PACRI will require compact, high-resolution and non-invasive beam diagnostics capable of supporting beam monitoring and optimization. Optical Synchrotron Radiation (OSR) offers a promising non-invasive approach by providing beam information, making it attractive for high-brightness and high-repetition-rate accelerator environments.
We present ongoing developments of an OSR-based diagnostic framework aimed at single-shot transverse beam characterization in plasma accelerator beamlines. Simulation studies and proof-of-concept investigations have been performed to assess photon yield, optical transport and measurement sensitivity, while dedicated measurements at CERN's CLEAR facility have provided valuable experience toward experimental implementation. The prompt, non-invasive nature of the radiation also makes this a candidate for future virtual diagnostic implementations, where online beam profiles could inform predictive models or feedback correction schemes.
Current efforts focus on deployment within the AWAKE experiment at CERN, where OSR diagnostics will be used both for electron injection-line beam profiling and for downstream beam emittance measurement. These activities serve as a stepping stone toward broader applications to both beam-driven and laser-driven future plasma accelerator facilities.

Speaker: Debdeep Ghosal (University of Liverpool)

ELBA_OSRdiagnostics_dghosal.pptx

5:35 PM Femtosecond resolution longitudinal profile reconstructions from coherent transition radiation spatial images with ensemble deep learning

Ultrashort longitudinal bunch profile measurements are essential in short-pulse accelerators, both conventional and plasma-based. For their use in light sources such as free-electron lasers, the required high-quality electron bunches pose significant challenges for diagnostics and instrumentation. This contribution presents shot-to-shot longitudinal bunch profile measurements derived from spatial imaging of broadband coherent transition radiation (CTR). The mirror-based imaging system was designed for and installed at the MAX IV Short Pulse Facility. An ensemble of convolutional neural networks (CNNs) was used for the longitudinal profile reconstructions: one CTR spatial image as input gives the reconstructed bunch profile as output. For training, CTR image simulations were obtained for a variety of bunch profiles/lengths, and experimental data were collected for a range of longitudinal compression settings alongside transverse deflecting cavity (TDC) benchmarks. Reconstructions with few-femtosecond resolution confirm the suitability of the proposed diagnostics for accelerators with parameters comparable to those of EuPRAXIA, while offering generalisability to other short-pulse accelerators by varying the monitor design through adjustments to the optical elements. Additionally, the results demonstrate the potential of machine learning in the development of novel and challenging diagnostics when paired with robust R&D activities that include a deep understanding of the underlying physics and instrumentation.

Speaker: Ana Maria Guisao Betancur (University of Liverpool)

20260923_GuisaoBetancur_EuPRAXIADN.pptx

6:30 PM → 7:30 PM Poster Session: Poster Session with wine & cheese

6:30 PM Laser Wakefield Acceleration in Discharge-Generated Plasma Channels

Laser-plasma accelerators (LPAs) have demonstrated the capability to produce high-energy, high-quality electron beams over compact distances. A key challenge is to maximise the coupling efficiency between the laser pulse and the accelerating plasma structure. One promising approach is to guide the laser pulse through a preformed plasma channel, maintaining the laser focus over extended propagation distances and thereby enabling sustained electron acceleration. This technique has enabled the acceleration of electrons to energies up to 10 GeV through laser guiding over several centimetres.
In this work, we investigate laser guiding in plasma channels generated by high-voltage electrical discharges in gas-filled capillaries for high repetition rate applications. We examine the influence of both the plasma channel properties and the laser parameters on guiding performance. Furthermore, three-dimensional Particle-In-Cell (PIC) simulations are employed to study the laser-plasma interaction and the resulting electron beam acceleration within these guided plasma structures.

Speaker: Alex Johannes Whitehead

AW_EuPRAXIA-PP_2026.pdf

6:30 PM Multi-cycle THz pulse generation and start-to-end simulations on dielectric THz-driven accelerators

Compact terahertz (THz)-driven accelerators require intense, narrowband, multi-cycle THz pulses and structures that efficiently deliver these fields to electron beams. This work connects both requirements by investigating high-frequency THz-pulse generation through optical rectification in orientation-patterned GaAs and GaP and by applying multi-cycle THz fields to a dielectric terahertz-driven accelerator integrated into a tapered parallel-plate waveguide. A one-dimensional nonlinear propagation model is used to optimize quasi-phase-matched semiconductor crystals pumped near 1.8 μm, including dispersion, THz absorption, self-phase modulation, sum- and difference-frequency generation, multiphoton absorption, and pump depletion. The simulations show that pump duration, crystal length, and pump format strongly determine narrowband output; multiphoton absorption is particularly detrimental in GaAs at 1.8 μm, whereas GaP is less affected. Pulse bursts and two-line beating provide the most efficient multi-cycle generation among the tested schemes. This THz-source concept is then linked to a compact accelerator geometry in which a tapered waveguide enhances and couples the THz pulse to a dual-pillar dielectric grating. Electromagnetic and particle-in-cell simulations indicate sixfold field enhancement and MeV cm−1-class accelerating gradients, supporting scalable tabletop THz acceleration.

Speaker: Andrés Leiva Genre

ELBA-poster_AndresLeivaGenre.pdf

6:30 PM Performance Evaluation of the Extraction System of Supersonic Gas Curtain Ionization Profile Monitor for FLASH Protons

FLASH radiotherapy demands beam monitoring systems capable of providing real-time, non-invasive measurements under ultra-high dose rate (UHDR) conditions without perturbing the therapeutic beam. This study investigates the extraction system of Supersonic Gas Curtain-based Ionization Profile Monitor (SGC-IPM) for transverse beam profile and position measurements in proton FLASH applications. The detector employs tilted supersonic gas curtain that intersects the proton beam, producing ions through impact ionization. These ions are extracted by tailored electrostatic field and detected using two-stage microchannel plate (MCP), phosphor screen, and CMOS camera. Electrostatic and particle-tracking simulations were performed in CST-Studio-Suite to evaluate ion transport and beam profile reconstruction. The ionization region was modelled using realistic proton beam parameters and uniform gas curtain density distribution, and the extraction performance was assessed for multiple beam sizes. Results show accurate reconstruction of transverse beam profiles and beam position measurements within the operational limits of the extraction geometry. Simulation predictions were benchmarked against experimental measurements using a 28 MeV proton beam with an average beam current of 70 nA. Furthermore, a compact extraction system was designed and evaluated, demonstrating that a reduced footprint can be achieved without compromising the accuracy of beam profile or beam position measurements, supporting future clinical integration.

Speakers: Mrs Farhana Thesni Mada Parambil (University of Liverpool/ Cockcroft Institute), Carsten Welsch (University of Liverpool)

Poster_EuPRAXIA_Conference.pdf

6:30 PM Plasma photocathodes: a pathway to high-brightness electron beams at ELI Beamlines

Laser-plasma accelerators (LPAs) have advanced from quasi-monoenergetic electron beams to beams of sufficient quality to drive free-electron lasers (FELs) [1], igniting a race towards shorter-wavelength, plasma-driven FELs. Reaching higher photon energies, however, is limited by electron-beam brightness and beam-parameter stability at GeV-level energies. Plasma photocathode injection promises to address both [2], whether in an LPA or beam-driven plasma wakefield acceleration (PWFA). Through start-to-end simulations, we present two such schemes driven by the L2 DUHA 200 TW laser at ELI Beamlines: ReMPI, an all-optical plasma photocathode in an LPA [3], and plasma photocathode injection in a Hybrid LPA2PWFA configuration [4]. Our results reveal a route to ultra-low-emittance, high-brightness, high-stability and tuneable beams down to hundreds-of-attosecond pulse durations. These parameters meet the requirements of future plasma-driven X-ray FELs and mark a significant stride towards soft-to-hard X-ray FELs at EuPRAXIA@ELI Beamlines.

[1] Galletti et al. Nat.Photon. 18, 780–791 (2024)
[2] Hidding et al. Phys.Rev.Lett. 108, 035001 (2012) & Tomassini et al. Phys.Plasmas, vol. 24, no. 10, 103120, (2017) & Habib et al., Ann.Phys., vol. 535, 2200655, (2023)
[3] Tomassini et al. Sci.Rep., vol. 15, no. 1, 40794, (2025)
[4] Habib et al., Nat.Commun., vol. 14, 1054, (2023)

Speaker: Dr Fahim Habib (ELI Beamlines | The Extreme Light Infrastructure ERIC)

EuPRAXIA_PP_Meeting_PlasmaXFEL_v10_Habib_final_HG_out.pdf

6:30 PM Synchronized twin electron beams from bubble-centroid oscillation injection

When laser wakefield acceleration is driven by a few-cycle laser pulse, the structure of the plasma wave is coupled to the waveform of the electric field. This results in the formation of an asymmetric plasma bubble that oscillates in the direction of the laser polarization. When a laser pulse propagates through the gas, it experiences a strong redshift which shortens the oscillation period, further enhancing asymmetry in the wakefield. This oscillating behaviour of the plasma bubble allows electron injection that is localized at the extremes of subsequent oscillation leading to a pair of electron bunches being injected and accelerated in the same plasma cavity. Our experimental findings provide an observation of these twin beams that are separated along the direction of polarization and share similar properties like energy and charge.

Speaker: Flanish D'Souza (Department of Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden)

elba_poster_Flanish.pdf

6:30 PM Towards a Plasma Undulator Experiment at SPARC_LAB

Plasma-based undulators offer a promising route toward compact radiation sources by exploiting the betatron motion of relativistic electrons in an ion channel. A proof-of-principle experiment is being developed at SPARC_LAB, within the EuPRAXIA@SPARC_LAB project, to investigate this concept under experimentally realistic conditions. Previous studies assessed ion-channel formation and the radiation emitted by a matched witness bunch, identifying beam quality and transverse matching as key requirements for the observation of enhanced betatron radiation and FEL-like amplification. Building on these results, we present ongoing studies toward the experimental implementation of the scheme. Particular attention is devoted to identifying suitable accelerator working points for the generation and transport of the required driver-witness beam configuration and to evaluating the radiation expected from realistic electron beam distributions.

Speaker: Carlos Buitrago (Istituto Nazionale di Fisica Nucleare)

posterEuPRAXIAPP26.pdf

8:30 PM → 10:30 PM Dinner

Thu, September 24

9:00 AM → 9:30 AM Invited Talk

9:00 AM What plasma accelerators can do for ERMES, the new technique for earthquake forecast (Earthquake Reconnaissance via Muon beam Evolution in Silicon dioxide)

ERMES is a new technique recently conceived (Ref. 1,2) for effective forecast of shallow earthquakes, based on active interrogation of tectonic stress active in regions of the Earth crust where active seismogenic faults can generate seismic events whose magnitude depends on the amount of stored energy in the crust elasto-plastic deformation. The new physical mechanism just discovered is the random-walk brownian motion of high energy muons propagating through the piezoelectric fabrics, made of quartz crystals abundant in granite-like rocks. The tectonic pressure activates piezoelectricity whose field amplitude scales linearly with applied pressure: this is responsible for the random walk effect on the muons crossing the Earth crust region of interest. The induced muon beam diffraction brings to the detector a signal scaling with the tectonic pressure, allowing to monitor the escalation of the rock elasto-plastic deformation toward the rupture limit. The challenge for the plasma accelerator communitiy is to design and build a compact 500 GeV (negative) muon accelerator, with the ease of low flux requests (10^8 muon/s) and large emittances (> 1000 mm.mrad norm. emittance). The reward? Developing a crucial component of an ERMES system, aiming at making reliable earthquake forecast a reality, and helping to save human lives.

Speaker: Luca Serafini (Istituto Nazionale di Fisica Nucleare)

Ermes-ACP25-ArXiv.pdf

Ermes-PRR.pdf

Serafini-ERMES-EupraXia-meeting-26.pptx

9:30 AM → 10:30 AM EuPRAXIA DN: Plasma Accelerator Applications (incl Medical)

9:30 AM Science-driven design of the EuPRAXIA FEL at ELI Beamlines

The EuPRAXIA free-electron laser at ELI Beamlines is being developed not only as a compact source, but as a user facility whose technical choices are driven by clearly defined scientific opportunities. The proposed water-window FEL, spanning 270–550 eV, will address experiments at the C, N and O K-edges and selected transition-metal L-edges, enabling femtosecond, element-specific studies of ultrafast charge transfer, photochemistry, catalysis, correlated materials, life-science imaging and emerging attosecond science. These applications impose demanding requirements on photon energy, bandwidth, pulse duration, timing jitter, polarization control, repetition rate, wavefront quality and pump–probe synchronization.
At ELI, the science case is therefore treated as an essential design input rather than a downstream justification. Accelerator concepts, electron-beam transport, seeding options, undulator design and photon beamline instrumentation are being developed in parallel, but their prioritization must ultimately be guided by the experiments the facility should enable. By mapping representative user experiments onto quantitative photon-beam requirements, the science case provides a framework for selecting the acceleration scheme and transport architecture most likely to deliver robust FEL performance under realistic user conditions. This approach connects plasma-accelerator development directly to scientific impact and to the long-term evolution of compact FEL facilities in Europe.

Speaker: Jakob Andreasson (ELI Beamlines)

EuPRAXIA-PP JA.pptx

9:50 AM Updated Review on the VHEE Beam for FLASH Radiation Therapy Development

This work provides an updated report on the very high energy electron (VHEE) beam for FLASH radiation therapy developments, considering the recent progress in compact accelerator technology for electron beams able to treat deep-seated tumours. An excessive effort has been initiated by European research institutions and universities, modifying their electron accelerator infrastructure to FLASH beam facilities

Speaker: Evangelos Gazis Gazis (National Technical University of Athens)

E&N Gazis_EuPRAXIA PP_Final Meeting.pdf

E&N Gazis_EuPRAXIA PP_Final Meeting.pptx

10:10 AM Enhanced Betatron X-ray beams from Dual Stage Plasma Targets

The broadband spectrum, femtosecond duration, spatially coherent and micron size of Betatron X-ray sources are of great interest for phase contrast X-ray imaging, femtosecond X-ray diffraction and absorption spectroscopy. The implementation of Betatron sources for radiographic imaging of dense materials are limited by a low energy efficiency, relatively low flux and photon energy of X-ray radiation. In this project, the independent control of the electron acceleration and the X-ray radiation using separate sections of plasma target at ELI Gammatron beamline was investigated.
Several configurations of dual supersonic nozzles were tested by changing the backing pressure of He and He + 2% nitrogen mixture in the first nozzle and He as well as He with different fraction of nitrogen gas dopant in the second nozzle. Two typical regimes of enhanced X-ray beams were researched. In the first regime, the electron acceleration in the first nozzle was optimised to reach quasimonoenergetic GeV class electron beams with nC charge and the betatron X-ray radiation in the second nozzle was enhanced afterwards. In the second regime, the highest yield of X-ray radiation in the first nozzle was tuned first and the effects of increased X-ray radiation from filaments in the second nozzle were investigated.

Speaker: Vidmantas Tomkus (Center for Physical Sciences and Technology FTMC)

EuPRAXIA-2026_VTomkus.pdf

EuPRAXIA-2026_VTomkus.pptx

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 11:30 AM Invited Talk

11:00 AM A Compton source of Gamma ray based on the EuPRAXIA electron beam

In this paper, we present the potentiality and the application of a Compton source driven by the electron beam of EuPRAXIA, in interaction with a commercially available infrared laser. The possibility of exploring nuclear photonics effects and fundamental aspects of physics is also discussed

Speaker: Vittoria Petrillo (Istituto Nazionale di Fisica Nucleare)

Petrillo_Elba_2026.pptx

11:30 AM → 11:50 AM EuPRAXIA DN: Diagnostics and Instrumentation (incl machine learning)

11:30 AM High-Sensitivity Shack-Hartmann Wavefront Sensing for High-Repetition-Rate Laser-Plasma Acceleration

At DESY, we investigate the influence of laser wavefront aberrations on the stability and quality of electron beams generated by our high-repetition-rate laser-plasma accelerator MAGMA, driven by the KALDERA laser system. Conventional wavefront sensors lack the frame rate and sensitivity required to capture the subtle and fast wavefront changes responsible for shot-to-shot electron beam fluctuations. We therefore developed a Shack-Hartmann wavefront sensor with sub-nanometer accuracy, along with custom software optimized for high-repetition-rate operation.

We have since installed multiple sensors throughout the laser system and LPA, enabling synchronized 100 Hz aberration measurements during operation and providing valuable data for both correlation analysis and the training of neural-network-based surrogate models. We present the wavefront sensor design, deployment, and correlation results, with an outlook toward real-time aberration correction.

Speaker: Luisa Kristin Niggemeier

Eupraxia_2026_Luisa_Niggemeier_Final.pptx

11:50 AM → 12:35 PM EuPRAXIA PP: WP11

Conveners: Enrica Chiadroni (Istituto Nazionale di Fisica Nucleare), Gianluca Sarri

11:50 AM Light sources driven by PWFA

Plasma-based accelerators have emerged as one of the most promising technologies for next-generation particle acceleration, offering accelerating gradients orders of magnitude higher than those achievable in conventional radio-frequency structures. This talk will present an overview of the multi-disciplinary impact of plasma-based accelerators.
Recent advancements in plasma accelerator technology will be reviewed, including improved control of beam quality, staging concepts, and enhanced stability and reproducibility. These developments are paving the way toward compact, high-gradient accelerators capable of delivering high-brightness, high-energy particle beams.
A major focus will be on radiation sources enabled by plasma acceleration, such as compact X-ray and gamma-ray sources and betatron radiation.

Speaker: Enrica Chiadroni (Istituto Nazionale di Fisica Nucleare)

ID#55_Chiadroni_WP11_v3.pdf

12:05 PM Update on applications of primary electron beams and secondary sources within EuPRAXIA

We will present a summary of the activities carried out within work package 11 focussed on the development and application of plasma-accelerated electron beams and of secondary particle sources. The talk will present the current status and future directions of several secondary sources of direct relevance to both sites of EuPRAXIA, including Compton-scattered gamma-ray beams, positrons, and muons, together with an update on recent results on the direct application of plasma-accelerated electron beams, especially for radiobiological applications.

Speaker: Gianluca Sarri

Sarri_Thursday.pdf

12:20 PM Plasma Discharge Undulator: concept and first experimental characterization at PSI

The Plasma Discharge Undulator (PDU) is a novel compact undulator concept in which a periodically modulated discharge current, here pursued through geometrically corrugated capillaries, generates a periodically oscillating azimuthal magnetic field. The resulting beam dynamics would combine strong linear focusing from the azimuthal field with a well-defined undulator oscillation wavelength, suppressing the K-spread that limits conventional plasma undulators and enabling FEL-compatible narrow-band radiation emission. In this talk, the first experimental characterization of the PDU in a plasma discharge test bench developed at PSI is presented, focusing on the diagnostic tools implemented to probe the magnetic field distribution inside undulated discharge capillaries. Since plasma recombination light alone is not sufficient to retrieve current flow information, a passive magneto-optical imaging technique based on a GGG Faraday sensor has been employed, demonstrating robust operation in the rapidly varying high-voltage environment of a pulsed discharge. This technique holds broader diagnostic potential in plasma-based accelerator and light source applications, particularly in high repetition rate scenarios involving ceramic capillaries where plasma light is typically not accessible. Together, these results provide a first feasibility assessment of the capillary-based PDU concept, laying the groundwork for future experimental studies with an electron beam.

Speaker: Andrea Frazzitta (Istituto Nazionale di Fisica Nucleare)

Frazzitta_talk.pptx

12:35 PM → 4:05 PM Lunch

4:05 PM → 4:15 PM Coffee Break

4:15 PM → 5:07 PM EuPRAXIA PP: WP12

Conveners: Dr Leonida Antonio Gizzi (CNR - INO, and INFN - Sez. di Pisa), Paul Crump

4:15 PM LASER TECHNOLOGY AND LIAISON TO INDUSTRY: Outcomes and Roadmap towards the EuPRAXIA Laser Driver

Work Package 12 of the EuPRAXIA Preparatory Phase has defined the technology roadmap for the laser drivers required by the future EuPRAXIA laser-driven facility, with particular attention on high repetition rate, high average power, reliability, stability and industrial scalability. The work has assessed the maturity of the main laser architectures and critical subsystems, identifying diode-pumped Ti:Sapphire as the most mature near-term solution, while OPCPA and other advanced architectures provide promising routes towards higher efficiency and ultimately kHz-class operation.

A major outcome of WP12 has been the identification of the key technological bottlenecks that must be addressed to move from advanced laboratory systems to reliable accelerator drivers. These include thermal management, compressor performance, diode-pump technology, beam stability and the availability of critical industrial components.

These conclusions will be complemented during the meeting by dedicated contributions addressing the status of the OPCPA development at ELI EuPRAXIA pillar, by Tyler Green and three central elements of the roadmap including thermal loading and wavefront aberrations in diffraction gratings for high-average-power compressors, presented by Luca Labate, high-power diode laser pump development for next-generation laser infrastructures, presented by Paul Crump, and a view on industrial grade, EuPRAXIA oriented high-average-power laser technology, presented by Christophe Simon-Boisson

Speaker: Dr Leonida Antonio Gizzi (CNR - INO, and INFN - Sez. di Pisa)

EuPRAXIA-PP-WP12_2026.pptx

4:21 PM Simulations of thermal load and induced wavefront aberrations on diffraction gratings for high average power laser compressors

Thermal load caused by fractional laser energy absorption can cause bulk or surface damage on diffraction gratings when operated at high average power, as well as to wavefront aberrations due to surface deformations. Mitigation strategies and advanced solutions are thus needed for high power laser beamlines at high rep rate. We report on numerical simulations of thermal load, grating deformation and induced wavefront aberration in different scenarios relevant for the EuPRAXIA facility.

Speaker: Luca Labate (CNR-INO)

WP12_Labate.pdf

4:34 PM Development of diode laser pumps for high energy laser infrastructures

Progress in developing advanced diode laser pumps for high energy laser systems will be presented, focusing on efforts to scale peak and average power (towards 1 kHz), make new wavelengths available, and implement wavelength stabilization. Updates from efforts within inertial fusion research programs will be shared.

Speaker: Dr Paul Crump

2026.09.24_EuPRAXIA-PP_Crump_FBH.pdf

4:47 PM High average power laser technology for Eupraxia laser-driven machine

The laser-driven machine of EUPRAXIA will require for the drive laser of the accelerator a combination of simultaneously high average power (according to the required energy and repetition rate) and ultra-short pulse to optimize the performance of the laser-plasma accelerator designed to drive the FEL. Whereas the phase 1 of EUPRAXIA laser-driven machine could be achieved by the evolution of the performance of an existing laser to drive the 1 GeV accelerator, phase 2 will require a completely new laser to drive the 5 GeV accelerator. The minimal set of parameters known as of today is an energy of 20 J at a repetition rate of 100 Hz with a pulse duration below 100 fs and possibly even less, ie a laser source much beyond the current state of the art. In this paper, we review and compare the different candidate laser technologies which are mainly indirect CPA, OPCPA (both having to be pumped by a diode-pumped solid-state laser) or direct diode-pumped CPA. Our comparative analysis will start from current state of the art and consider the technical gaps to fill, the timeline required to reach the performance with industrial maturity and the impact on acquisition and operation costs

Speaker: Christophe SIMON-BOISSON (THALES OPTRONIQUE SAS)

EUPRAXIA PP final meeting Elba September 2026_Simonboisson.pdf

5:00 PM Progress on high power diode-pumped technology for future laser-driven sources

Speaker: Antoine Courjaud

EuPRAXIA-PP Diode-pumped laser technology - Antoine Courjaud - Amplitude.pdf

5:07 PM → 5:15 PM Q&A

5:15 PM → 7:15 PM EuPRAXIA PP: Collaboration Board Meeting

5:15 PM Status of the Project

Speaker: Pierluigi Campana (Istituto Nazionale di Fisica Nucleare)

5:20 PM EuPRAXIA MoU

Speaker: Antonio Falone (Istituto Nazionale di Fisica Nucleare)

5:30 PM MoU Updates

Speaker: Pierluigi Campana (Istituto Nazionale di Fisica Nucleare)

5:40 PM Adoption of the MoU draft, as of deliverable D 4.4 Report on final EuPRAXIA financial and legal model incl. RI govern. and management

7:10 PM A.O.B.

8:30 PM → 10:30 PM Social Dinner

Fri, September 25

9:00 AM → 9:45 AM EuPRAXIA PP: WP13

Conveners: Prof. Alessandro Cianchi (Tor Vergata University and INFN), Rasmus Ischebeck

9:00 AM Beam driven diagnostics, EuPRAXIA@SPARC_LAB TDR

EuPRAXIA@SPARC_LAB is designed as a compact plasma-based user facility combining a high-brightness X-band RF linac with a beam-driven plasma wakefield acceleration stage, aimed at producing high-quality electron beams for FEL operation in the water-window spectral range. In this context, beam diagnostics are a central component of the Technical Design Report, since plasma-accelerated beams require single-shot measurements, micrometre-scale transverse resolution, femtosecond-scale longitudinal characterization, and the capability to distinguish and control driver and witness bunches.

This talk presents the beam-driven diagnostics layout developed for the EuPRAXIA@SPARC_LAB TDR, with emphasis on the measurement challenges associated with the plasma stage and the preservation of beam quality toward FEL operation. The diagnostic strategy includes transverse and longitudinal beam characterization, energy and energy-spread measurements, timing and synchronization systems, and advanced concepts for single-shot emittance diagnostics of the witness beam. The contribution will discuss the rationale for the selected systems, their expected performance, and their role in commissioning, tuning, and validating the beam-driven working point of the facility.

Speaker: Prof. Alessandro Cianchi (Tor Vergata University and INFN)

Presentazione_Electron_Diagnostics_EuPRAXIA_new.pptx

9:10 AM Diagnostics Beamline for the Laser-Driven Pillar of EuPRAXIA

The EuPRAXIA project is planning a free electron laser user facility based on laser wakefield acceleration at ELI Beamlines. I will present an overview of the electron diagnostics beamline, which will measure key beam parameters for the FEL operation.

Speaker: Rasmus Ischebeck

Slides (PDF)

9:20 AM Beam diagnostics at Plasma Entrance for EuPRAXIA@Sparc_Lab

Measuring the characteristics of the driver and witness bunches at the plasma entrance is of paramount importance for the commissioning and operation of plasma wakefield accelerators. We will discuss the different options for measuring the transverse beam distributions (wire scanner and optical transition radiation), the longitudinal distribution and time of arrival (electro-optical sampling and coherent transition radiation), and their implementation in the final design of the interaction chamber. The characterization of the beam after the plasma interaction is equally important to assess the properties of the accelerated bunch. The post-plasma diagnostic section will therefore also be presented, with particular emphasis on the PolariX transverse deflecting structure for the longitudinal characterization of the accelerated beam.

Speaker: Francesco Demurtas (Istituto Nazionale di Fisica Nucleare)

EuPRAXIA-PP_FD.pdf

EuPRAXIA-PP_FD.pptx

9:40 AM Q&A

9:45 AM → 10:30 AM EuPRAXIA PP: WP14

Conveners: Bernhard Hidding, Prof. Stefan Karsch (LMU München)

9:45 AM Review of WP14 progress

WP14 has explored advanced plasma-acceleration concepts that could extend the EuPRAXIA beyond its baseline capabilities. This review summarizes progress in two complementary pillars. The first is hybrid LWFA–PWFA acceleration, in which laser-wakefield-generated electron beams drive a subsequent beam-driven plasma stage. Recent work has advanced this concept experimentally, including energy doubling in a hybrid stage and first, not yet complete, steps toward plasma-photocathode injection in such a configuration. These results strengthen the case for hybrid stages as compact beam-energy and beam-brightness transformers.

The second pillar is plasma-modulated plasma acceleration (P-MoPA), which aims to use commercially available picosecond thin-disk lasers to drive resonant wakefields at high repetition rate. Progress has been made on two central building blocks: promising first modulator-stage studies and a proof-of-principle multi-pulse wakefield-excitation experiment at ASTRA Gemini using a pulse train generated from a Titanium-doped Sapphire laser. For the third building block, pulse-train compression, chirped-mirror compressor designs exist, with grating compression as a fallback route.

Looking ahead, WP14 is pursuing the hybrid route as a high-quality electron source for a potential FEL driver at ELI-Beamlines, the laser-based pillar of EuPRAXIA, in close collaboration with ELI scientists and through active funding efforts.

Speakers: Prof. Bernhard Hidding, Prof. Stefan Karsch (LMU München)

Karsch_Eupraxia_PP_workshop_ELBA.pptx

10:00 AM Towards Compact Plasma-Based XFELs

Speaker: Dr Fahim Habib (ELI Beamlines | The Extreme Light Infrastructure ERIC)

05 2026-09-25-EuPRAXIA-PP-WP14-final-Habib.pptx

10:15 AM Q&A

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 11:45 AM EuPRAXIA PP: WP15

Conveners: Cristina Vaccarezza (Istituto Nazionale di Fisica Nucleare), Dr Riccardo Pompili (Istituto Nazionale di Fisica Nucleare)

11:00 AM EuPRAXIA@SPARC_LAB: Beam Dynamics and Performances of a Stable and Reliable Plasma-Based Acceleration Facility

EuPRAXIA@SPARC_LAB is being developed as a stable and reliable machine for plasma-based acceleration experiments, forming the first European plasma-based user facility for light production. The robustness and stability of the machine have been tested across different working points to understand its behaviour under a variety of operating scenarios. Beam dynamics simulations have been carried out to identify the optimal working point in terms of both plasma acceleration performances and FEL requirements. A full RF working point has been investigated as an alternative operational mode for FEL users and as the initial step for machine commissioning. The machine performance has additionally been analysed with respect to misalignments, supporting BBA studies. The facility relies on a FEL line, AQUA, targeting the carbon K-edge of the water window at 1 GeV, extendable to the nitrogen K-edge at 1.2 GeV. It is a SASE FEL optimized for high gain through a short-period, high-field undulator, driven by PWFA beams, enabling ultrashort radiation pulses. The beamline is designed for operation at a 4 nm wavelength, as a reference case. This presentation will cover the beam dynamics studies performed during the machine design, providing an overview of the expected performances and the key objectives of the project.

Speaker: Gilles Jacopo Silvi (Istituto Nazionale di Fisica Nucleare)

GJS_EuPRAXIA-PP_2026.pptx

11:15 AM The EuPRAXIA@SPARC_LAB RF System

EuPRAXIA@SPARC_LAB is the first European user facility combining high-gradient X-band RF technology with plasma-based acceleration to deliver high-brightness electron beams for a soft X-ray Free-Electron Laser (FEL). Achieving the required beam quality and stability relies on advanced radiofrequency (RF) systems capable of controlling amplitude and phase with extremely high precision.

This contribution presents the design and implementation of the RF and synchronization systems developed for EuPRAXIA@SPARC_LAB. The RF infrastructure comprises three S-band and eight X-band RF stations, including high-power modulators, klystrons, pulse compressors, waveguide distribution networks, and advanced Low-Level RF (LLRF) systems specifically designed to satisfy the extremely stringent phase stability requirements of the facility. Novel FPGA-based LLRF platforms, together with temperature-stabilized analog front-ends and fast intra-pulse feedback techniques, enable phase jitter specifications as low as 0.005° rms in S-band and 0.015° rms in X-band, while building upon technologies successfully demonstrated at SPARC_LAB and the TEX test facility.

The talk will provide an overview of the RF architecture, discuss the main technological challenges and design choices, and present the expected system performance in view of the realization of one of the most advanced RF infrastructures for plasma-based accelerator facilities.

Speaker: Luca Piersanti (Istituto Nazionale di Fisica Nucleare)

EuPRAXIA-PP_Piersanti.pdf

11:30 AM The AQUA Free-Electron Laser beamline at EuPRAXIA@SPARC_LAB

The EuPRAXIA@SPARC_LAB facility will be the first plasma-driven free-electron laser user facility: the beams, accelerated up to 1-1.2 GeV by an X-band normal conducting linear accelerator followed by a plasma wakefield acceleration stagem will drive the baseline FEL beamline, named AQUA, a soft X-ray SASE FEL designed to operate in the water window down to 3-4 nm.
Its main amplifier consists of an array of ten APPLE-X permanent magnet undulator modules, each 2 m long and with a period length of 18 mm.
The main design studies and start to end simulations of the FEL performances, present in the Technical Design Report, are discussed.

Speaker: Michele Opromolla (ENEA)

AQUA 25.09.26_EupraxiaPP.pdf

AQUA 25.09.26_EupraxiaPP.pptx

11:45 AM → 12:30 PM EuPRAXIA PP: WP16

Conveners: Dr Alexander Molodozhentsev (ELI-Beamlines), Rajeev Pattathil (Rutherford Appleton Laboratory)

11:45 AM Site Selection and TDR Preparation for the LPA-Based EuPRAXIA Pillar

Work Package 16 (WP16) of the EuPRAXIA Preparatory Phase addresses site selection and the preparation of the Technical Design Report (TDR) for the laser-plasma accelerator (LPA)-based pillar of the distributed EuPRAXIA facility. This presentation summarises the key outcomes of the site selection process and the current status of TDR preparation at the selected host site.
Following a competitive evaluation process — including bid book submissions from three candidate institutions (ELI Beamlines/ELI ERIC, EPAC, and CNR-INO) and an assessment by the EuPRAXIA PP Selection Panel — the EuPRAXIA PP Collaboration Board designated ELI Beamlines (ELI ERIC, Czech Republic) as the host of the EuPRAXIA LPA-based pillar in March 2025. EPAC (UK) was assigned the role of EuPRAXIA Centre for R&D for the 5 GeV beam development, and CNR-INO (Italy) was designated the EuPRAXIA National Node for Laser R&D in Italy.
The presentation will outline the WP16 deliverables, the current status of TDR preparation, the milestone schedule through 2031, and the collaborative framework for engaging EuPRAXIA consortium partners.

Speaker: Dr Alexander Molodozhentsev (ELI-Beamlines)

WP16-EuPRAXIA-ELI.pptx

12:10 PM Site Selection and TDR Preparation for the LPA-Based EuPRAXIA Pillar

Work Package 16 (WP16) of the EuPRAXIA Preparatory Phase addresses site selection and the preparation of the Technical Design Report (TDR) for the laser-plasma accelerator (LPA)-based pillar of the distributed EuPRAXIA facility. This presentation summarises the key outcomes of the site selection process and the current status of TDR preparation at the selected host site.
Following a competitive evaluation process — including bid book submissions from three candidate institutions (ELI Beamlines/ELI ERIC, EPAC, and CNR-INO) and an assessment by the EuPRAXIA PP Selection Panel — the EuPRAXIA PP Collaboration Board designated ELI Beamlines (ELI ERIC, Czech Republic) as the host of the EuPRAXIA LPA-based pillar in March 2025. EPAC (UK) was assigned the role of EuPRAXIA Centre for R&D for the 5 GeV beam development, and CNR-INO (Italy) was designated the EuPRAXIA National Node for Laser R&D in Italy.
The presentation will outline the WP16 deliverables, the current status of TDR preparation, the milestone schedule through 2031, and the collaborative framework for engaging EuPRAXIA consortium partners.

Speaker: Rajeev Pattathil (Rutherford Appleton Laboratory)

W16-EPAC.pdf

W16-EPAC.pptx

12:30 PM → 1:00 PM Conclusion

Conveners: Carsten Welsch (University of Liverpool), Massimo Ferrario (Istituto Nazionale di Fisica Nucleare)

Closing 2026.pptx

1:00 PM → 4:00 PM Lunch

4:30 PM → 6:45 PM DN Steering Committee EIPP Launch other satellite meetings

8:30 PM → 10:30 PM Dinner

Sat, September 26

8:00 AM → 8:00 PM Departure