Á. Ferran Pousa
A5040099356- Laser-Plasma Interactions and Diagnostics
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Laser-induced spectroscopy and plasma
- Magnetic confinement fusion research
- Laser-Matter Interactions and Applications
- Pulsed Power Technology Applications
- Advanced Surface Polishing Techniques
- Laser Design and Applications
- Laser Material Processing Techniques
- High-pressure geophysics and materials
- Plasma Diagnostics and Applications
- Particle Detector Development and Performance
- Advanced Multi-Objective Optimization Algorithms
- Advanced Fiber Laser Technologies
- Advanced Data Storage Technologies
- Political Dynamics in Latin America
- Aerosol Filtration and Electrostatic Precipitation
- Media and Communication Studies
- Advanced X-ray Imaging Techniques
- Plasma Applications and Diagnostics
- Superconducting Materials and Applications
- Lattice Boltzmann Simulation Studies
- Cell Image Analysis Techniques
- Gyrotron and Vacuum Electronics Research
Deutsches Elektronen-Synchrotron DESY
2017-2025
Universität Hamburg
2017-2020
Universidade de Santiago de Compostela
2015
Abstract This report presents the conceptual design of a new European research infrastructure EuPRAXIA. The concept has been established over last four years in unique collaboration 41 laboratories within Horizon 2020 study funded by Union. EuPRAXIA is first project that develops dedicated particle accelerator based on novel plasma acceleration concepts and laser technology. It focuses development electron accelerators underlying technologies, their user communities, exploitation existing...
Accelerator physics relies on numerical algorithms to solve optimization problems in online accelerator control and tasks such as experimental design model calibration simulations. The effectiveness of discovering ideal solutions for complex challenges with limited resources often determines the problem complexity these methods can address. community has recognized advantages Bayesian algorithms, which leverage statistical surrogate models objective functions effectively address challenges,...
Abstract Radio-frequency (RF) accelerators providing high-quality relativistic electron beams are an important resource enabling many areas of science, as well industrial and medical applications. Two decades ago, laser-plasma 1 that support orders magnitude higher electric fields than those provided by modern RF cavities produced quasi-monoenergetic for the first time 2–4 . Since then, high-brightness at gigaelectronvolt (GeV) beam energy competitive properties have been demonstrated from...
The Horizon 2020 Project EuPRAXIA ("European Plasma Research Accelerator with eXcellence In Applications") is preparing a conceptual design report of highly compact and cost-effective European facility multi-GeV electron beams using plasma as the acceleration medium. accelerator will be based on laser and/or beam driven approach used for photon science, high-energy physics (HEP) detector tests, other applications such X-ray sources medical imaging or material processing. started in November...
The extreme electromagnetic fields sustained by plasma-based accelerators could drastically reduce the size and cost of future accelerator facilities. However, they are also an inherent source correlated energy spread in produced beams, which severely limits usability these devices. We propose here to split acceleration process into two plasma stages joined a magnetic chicane correlation induced first stage is inverted such that it can be naturally compensated second. Simulations particular...
Particle-in-cell simulations are among the most essential tools for modeling and optimization of laser-plasma accelerators, since they reproduce physics from first principles. However, high computational cost associated with them can severely limit scope parameter design studies. Here, we show that a multitask Bayesian algorithm be used to mitigate need such high-fidelity by incorporating information inexpensive evaluations reduced physical models. In proof-of-principle study, where fbpic is...
Laser-plasma accelerators outperform current radio frequency technology in acceleration strength by orders of magnitude. Yet, enabling them to deliver competitive beam quality for demanding applications, particularly terms energy spread and stability, remains a major challenge. In this Letter, we propose combine bunch decompression active plasma dechirping drastically improving the profile stability beams from laser-plasma accelerators. Realistic start-to-end simulations demonstrate...
In recent years, hydrodynamic optical-field-ionized (HOFI) channels have emerged as a promising technique to create laser waveguides suitable for guiding tightly focused pulses in plasma, needed laser-plasma accelerators. While experimental advances HOFI continue be made, the underlying mechanisms and roles of main parameters remain largely unexplored. this paper, we propose start-to-end simulation pipeline channel formation resulting use it explore physics tunability channels. This approach...
Linear colliders rely on high-quality flat beams to achieve the desired event rate while avoiding potentially deleterious beamstrahlung effects. Here, we show that in plasma accelerators can be subject quality degradation due emittance mixing. This effect occurs when beam particles' betatron oscillations a nonlinearly coupled wakefield become resonant horizontal and vertical planes. Emittance mixing lead substantial decrease of luminosity, main quantity determining rate. In some cases, use...
The present state of progress in laser wakefield acceleration encourages considering it as a practical alternative to conventional particle accelerators. A promising application would be use laser-plasma accelerator an injector for synchrotron light source. Yet, the energy spread and jitter beam pose significant difficulty efficient injection. In this paper, we propose design prototype deliver 500 MeV low-intensity electron bunches DESY-II synchrotron. utilizes presently available...
We present a conceptual design for hybrid laser-driven plasma wakefield accelerator (LWFA) to beam-driven (PWFA). In this set-up, the output beams from an LWFA stage are used as input of new PWFA stage. stage, witness beam largely increased quality can be produced and accelerated higher energies. The feasibility potential concept is shown through exemplary particle-in-cell simulations. addition, preliminary simulation results proof-of-concept experiment in Helmholtz-Zentrum...
Abstract The Horizon 2020 project EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is producing a conceptual design report for highly compact and cost-effective European facility multi-GeV electron beams accelerated using plasmas. will be set up as distributed Open Innovation platform two construction sites, one focus on beam-driven plasma acceleration (PWFA) another site laser-driven (LWFA). User areas at both sites provide access to free-electron laser pilot...
Plasma accelerators sustain large field gradients and could enable future compact linear colliders. To achieve the required high luminosity, colliders rely on flat beams to avoid potentially deleterious beamstrahlung effects. Here, we show that in plasma can be subject beam quality degradation due emittance mixing caused by transverse coupling wakefields. When there is a resonance between betatron oscillations horizontal vertical planes for particles coupled wakefield, emittances fully...
The use of external injection in plasma acceleration is attractive due to the high control over electron beam parameters, which can be tailored meet requirements and therefore preserve its quality during acceleration. However, using this technique requires an extremely fine synchronization between driver witness beams. In paper, we present a new scheme for laser-driven accelerator that would allow, first time, sub-femtosecond timing jitter laser pulse beam.
Abstract The design and study of plasma-based accelerators relies typically on costly 3D Particle-In-Cell (PIC) simulations due to the complexity laser-plasma beam-plasma interactions. However, under certain assumptions, more efficient simple models can be implemented describe dynamics accelerated beams. Wake-T (Wakefield particle Tracker) is a new code for analytical numerical tracking in which orders magnitude faster than conventional PIC codes. This allows fast parameter scans well suited...
Active energy compression scheme is presently being investigated for future laser-plasma accelerators. This method enables generating accelerator electron beams with a small, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mo>∼</a:mo><a:msup><a:mn>10</a:mn><a:mrow><a:mo>−</a:mo><a:mn>5</a:mn></a:mrow></a:msup></a:math>, relative slice spread. When modulated by laser pulse, such can produce coherent radiation at very high, <c:math...
Plasma accelerators present one of the most suitable candidates for development more compact particle acceleration technologies, yet they still lag behind radiofrequency (RF)-based devices when it comes to beam quality, control, stability and power efficiency. The Horizon 2020-funded project EuPRAXIA ("European Research Accelerator with eXcellence In Applications") aims overcome first three these hurdles by developing a conceptual design international user facility based on plasma...
Over the past decade production of multi-GeV electron beams from laser-driven plasma accelerators has been successfully demonstrated. However, demanding applications such as compact electron-driven X-ray sources require further improvements on beam energy spread and transverse emittance. One promising candidate to satisfy these requirements is externally inject an generated by RF linac into a accelerator. We present studies optimization final quality injected accelerated GeV energy, using...
From plasma-wakefield acceleration as a physics experiment toward plasma-based accelerator user facility, the beam issues remaining to be solved are still numerous. Providing beams with high energy, charge, and quality simultaneously, not only within plasma but also at doorstep itself, is main concern. Despite its tremendous efficiency in particle acceleration, wakefield displays complex 3D profile which, associated beam-loading field induced by accelerated makes of charge energy often...
Plasma-based accelerators (PBAs), having demonstrated the production of GeV electron beams in only centimetre scales, offer a path towards new generation highly compact and cost-effective particle accelerators. However, achieving required beam quality, particularly on energy spread for applications such as free-electron lasers, remains challenge. Here we investigate fundamental sources bunch length PBAs which arise from betatron motion electrons. We present an analytical theory, validated...
Accelerator physics relies on numerical algorithms to solve optimization problems in online accelerator control and tasks such as experimental design model calibration simulations. The effectiveness of discovering ideal solutions for complex challenges with limited resources often determines the problem complexity these methods can address. community has recognized advantages Bayesian algorithms, which leverage statistical surrogate models objective functions effectively address challenges,...
Abstract The EuPRAXIA project aims at designing the world's first accelerator based on advanced plasma-wakefield techniques to deliver 5 GeV electron beams that simultaneously have high charge, low emittance and energy spread, which are required for applications by future user communities. Meeting this challenging objective will only be possible through dedicated effort. Many injection/acceleration schemes been explored means of thorough simulations in more than ten European research...