A5025005466- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Atomic and Molecular Physics
- Laser-Matter Interactions and Applications
- Advanced X-ray Imaging Techniques
- Particle Accelerators and Free-Electron Lasers
- High-pressure geophysics and materials
- Particle accelerators and beam dynamics
- Distributed and Parallel Computing Systems
- Scientific Computing and Data Management
- Advanced Data Storage Technologies
- Radiation Therapy and Dosimetry
- Laser Design and Applications
- Parallel Computing and Optimization Techniques
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear physics research studies
- Mass Spectrometry Techniques and Applications
- Magnetic confinement fusion research
- Nuclear Physics and Applications
- Laser Material Processing Techniques
- Computational Physics and Python Applications
- Electron and X-Ray Spectroscopy Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Frequency and Time Standards
- High-Energy Particle Collisions Research
Helmholtz-Zentrum Dresden-Rossendorf
2015-2024
Center for Advanced Systems Understanding
2021-2024
Sandia National Laboratories
2010-2022
Forschungszentrum Jülich
2009-2022
University of Illinois Urbana-Champaign
2022
University of Delaware
2022
University of Basel
2022
Swisscom (Switzerland)
2022
CSCS - Swiss National Supercomputing Centre
2022
Nvidia (United States)
2022
This paper presents a systematic investigation of an ultrashort pulse laser acceleration protons that yields unprecedented maximum proton energies 17 MeV at table-top Ti:sapphire power level 100 TW. For plain few-micron-thick foil targets, linear scaling the energy with is observed and this attributed to short period close target rear surface. Although excellent contrast was available, slight deformations were found lead predictable shift direction energetic emission away from normal could...
We report on the first irradiation of in vitro tumour cells with laser-accelerated proton pulses showing dose-dependent biological damage. This experiment, paving way for future radiobiological studies protons, demonstrates simultaneous availability all components indispensable systematic studies: a laser–plasma accelerator providing spectra maximum energy exceeding 15 MeV and applicable doses few Gy within minutes; beam transport filtering system; an in-air site; dosimetry system both...
We present experimental results showing a laser-accelerated proton beam maximum energy cutoff of 67.5 MeV, with more than 5 × 106 protons per MeV at that energy, using flat-top hollow microcone targets. This result was obtained modest laser ∼80 J, on the high-contrast Trident Los Alamos National Laboratory. From 2D particle-in-cell simulations, we attribute source these enhanced energies to direct laser-light-pressure acceleration electrons along inner cone wall surface, where light wave...
The particle-in-cell (PIC) algorithm is one of the most widely used algorithms in computational plasma physics. With advent graphical processing units (GPUs), large-scale simulations on inexpensive GPU clusters are reach. We present an implementation a fully relativistic PIC for GPUs based NVIDIA CUDA library. It supports hybrid architecture consisting single computation nodes interconnected standard cluster topology, with each node carrying or more GPUs. internode communication realized...
Laser-plasma wakefield accelerators have seen tremendous progress, now capable of producing quasi-monoenergetic electron beams in the GeV energy range with few-femtoseconds bunch duration. Scaling these to nanocoulomb would yield hundreds kiloamperes peak current and stimulate next generation radiation sources covering high-field THz, high-brightness X-ray γ-ray sources, compact free-electron lasers laboratory-size beam-driven plasma accelerators. However, generating such currents operate...
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...
We report on first commissioning results of the DRACO Petawatt ultra-short pulse laser system implemented at ELBE center for high power radiation sources Helmholtz-Zentrum Dresden-Rossendorf. Key parameters essential efficient and reproducible performance plasma accelerators are presented discussed with demonstration 40 MeV proton acceleration under TNSA conditions as well peaked electron spectra unprecedented bunch charge in 0.5 nC range.
We report on recent experimental results deploying a continuous cryogenic hydrogen jet as debris-free, renewable laser-driven source of pure proton beams generated at the 150 TW ultrashort pulse laser Draco. Efficient acceleration reaching cut-off energies up to 20 MeV with particle numbers exceeding 10
With the growth of computational resources, scope electronic structure simulations has increased greatly. Artificial intelligence and robust data analysis hold promise to accelerate large-scale their hitherto unattainable scales. Machine learning is a rapidly growing field for processing such complex datasets. It recently gained traction in domain simulations, where density functional theory takes prominent role most widely used method. Thus, DFT calculations represent one largest loads on...
Laser plasma-based particle accelerators attract great interest in fields where conventional reach limits based on size, cost or beam parameters. Despite the fact that cell simulations have predicted several advantageous ion acceleration schemes, laser not yet reached their full potential producing simultaneous high-radiation doses at high energies. The most stringent limitation is lack of a suitable high-repetition rate target also provides degree control plasma conditions required to...
Uncrewed aerial vehicles (UAVs), also known as drones, are ubiquitous and their use cases extend today from governmental applications to civil such the agricultural, medical, transport sectors, etc. In accordance with requirements in terms of demand, it is possible carry out various missions involving several types UAVs well onboard sensors. According complexity mission, some configurations required both hardware software. This task becomes even more complex when system composed autonomous...
A precise knowledge of the temperature and number hot electrons generated in interaction short-pulse high-intensity lasers with solids is crucial for harnessing energy a laser pulse applications such as laser-driven ion acceleration or fast ignition. Nevertheless, present scaling laws tend to overestimate electron when compared experiment simulations. We novel approach that based on weighted average kinetic an ensemble electrons. find intensity can be derived from general Lorentz invariant...
We present a particle-in-cell simulation of the relativistic Kelvin-Helmholtz Instability (KHI) that for first time delivers angularly resolved radiation spectra particle dynamics during formation KHI. This enables studying KHI with unprecedented spatial, angular and spectral resolution. Our results are great importance understanding astrophysical jet comparable plasma phenomena by relating motion observed in to its signature.
The recent advancements in the field of laser-driven particle acceleration have made Laser-driven Ion Beam Therapy (L-IBT) an attractive alternative to conventional therapy facilities. To bring this emerging technology clinical application, we introduce broad energy assorted depth dose deposition model which makes efficient use large spread and high dose-per-pulse Laser Accelerated Protons (LAP) is capable delivering homogeneous doses tumors. Furthermore, as a key component L-IBT solution,...
Porting applications to new hardware or programming models is a tedious and error prone process. Every help that eases these burdens saving developer time can then be invested into the advancement of application itself instead preserving status-quo on platform. The Alpaka library defines implements an abstract hierarchical redundant parallelism model. model exploits memory hierarchies node at all levels available in current hardware. By doing so, it allows achieve platform performance...
Thomson backscattering of intense laser pulses from relativistic electrons not only allows for the generation bright x-ray but also investigation complex particle dynamics at interaction point. For this purpose a complete spectral characterization source powered by compact linear electron accelerator is performed with unprecedented angular and energy resolution. A rigorous statistical analysis comparing experimental data to 3D simulations enables, e.g., extraction distribution 1.5% accuracy...
Often, the interpretation of experiments concerning manipulation energy distribution laser-accelerated ion bunches is complicated by multitude competing dynamic processes simultaneously contributing to recorded signals. Here we demonstrate experimentally acceleration a clean proton bunch. This was achieved with microscopic and three-dimensionally confined near critical density plasma, which evolves from 1 µm diameter plastic sphere, levitated positioned micrometer precision in focus Petawatt...
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...
Abstract Plasma wakefield accelerators are capable of sustaining gigavolt-per-centimeter accelerating fields, surpassing the electric breakdown threshold in state-of-the-art accelerator modules by 3-4 orders magnitude. Beam-driven wakefields offer particularly attractive conditions for generation and acceleration high-quality beams. However, this scheme relies on kilometer-scale accelerators. Here, we report demonstration a millimeter-scale plasma powered laser-accelerated electron We...
Laser-plasma wakefield-based electron accelerators are expected to deliver ultrashort bunches with unprecedented peak currents. However, their actual pulse duration has never been directly measured in a single-shot experiment. We present measurements of the such by means THz time-domain interferometry. With data obtained using 0.5 J, 45 fs, 800 nm laser and ZnTe-based electro-optical setup, we demonstrate laser-accelerated, quasimonoenergetic [best fit 32 fs (FWHM) 90% upper confidence level...
Efg1 is a central transcriptional regulator of morphogenesis and metabolism in Candida albicans. In vivo genome-wide ChIP chip vitro footprint analyses revealed the recognition sequence (EGR-box) TATGCATA yeast growth form this human fungal pathogen. Upstream regions EFG1 genes encoding regulators hyphal including TCC1, CZF1, TEC1, DEF1 NRG1 contained EGR- and/or EGR-like boxes. Unexpectedly, after brief induction binding pattern was completely altered new sites yet unknown specificity had...
High-intensity laser plasma-based ion accelerators provide unsurpassed field gradients in the megavolt-per-micrometer range. They represent promising candidates for next-generation applications such as beam cancer therapy compact facilities. The weak scaling of maximum energies with square-root intensity, established large sub-picosecond class systems, motivates search more efficient acceleration processes. Here we demonstrate that ultrashort (pulse duration ~30 fs) highly relativistic...
Recent experiments in the Trident laser facility (Los Alamos National Laboratory) have shown that hollow conical targets with a flat top at tip can enhance maximum energy of proton beams created during interaction an ultra-intense short pulse target (Gaillard S A et al 2011 Phys. Plasmas 18 056710). The energies been seen these are highest observed so far laser-driven acceleration. This is attributed to new acceleration mechanism, direct light pressure electrons (DLLPA), which increases...
We performed a laser spectroscopic determination of the $2s$ hyperfine splitting (HFS) Li-like $^{209}\text{Bi}^{80+}$ and repeated measurement $1s$ HFS H-like $^{209}\text{Bi}^{82+}$. Both ion species were subsequently stored in Experimental Storage Ring at GSI Helmholtzzentrum f\"ur Schwerionenforschung Darmstadt cooled with an electron cooler velocity $\approx 0.71\,c$. Pulsed excitation $M1$ hyperfine-transition was anticollinear collinear geometry for $\text{Bi}^{82+}$...
A new proposed scheme for compact electron acceleration circumvents the energy limits of traditional ``laser-wakefield accelerators,'' possibly allowing researchers to accelerate electrons any using a small, scalable device.