A5101892578- Laser-Plasma Interactions and Diagnostics
- Neutrino Physics Research
- Nuclear Physics and Applications
- Laser-induced spectroscopy and plasma
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Nuclear reactor physics and engineering
- Particle physics theoretical and experimental studies
- Laser Design and Applications
- Laser-Matter Interactions and Applications
- Atomic and Subatomic Physics Research
- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Adaptive optics and wavefront sensing
- High-pressure geophysics and materials
- Nuclear physics research studies
- Advanced X-ray Imaging Techniques
- Dark Matter and Cosmic Phenomena
- Scientific Research and Discoveries
- Laser Material Processing Techniques
- Protein Kinase Regulation and GTPase Signaling
- Advanced Image Processing Techniques
- Particle Dynamics in Fluid Flows
- Plasma Diagnostics and Applications
- Protein Tyrosine Phosphatases
Czech Technical University in Prague
2019-2024
Extreme Light Infrastructure Beamlines
2021-2024
Czech Academy of Sciences, Institute of Physics
2019-2022
Azienda Universitaria Ospedaliera Consorziale - Policlinico Bari
2022
Johannes Gutenberg University Mainz
2018-2020
Okayama University
2019
Universität Hamburg
2012-2015
Purdue University West Lafayette
2012-2015
University Medical Center Hamburg-Eppendorf
2013
Friedrich-Alexander-Universität Erlangen-Nürnberg
2002-2013
We show the laser-driven acceleration of unprecedented, collimated (2 mrad divergence), and quasi-monoenergetic (25% energy spread) electron beams with up to 50 MeV at 1 kHz repetition rate. The laser driver is a multi-cycle (15 fs) optical parametric chirped pulse amplification system, operating 26 mJ (1.7 TW). scalability technology reported in this work pave way toward developing high-brilliance x-ray sources for medical imaging innovative devices brain cancer treatment represent step...
We present a comprehensive methodology for the simulation of astronomical images from optical survey telescopes. use photon Monte Carlo approach to construct by sampling photons models source populations, and then simulating those through system as they interact with atmosphere, telescope, camera. demonstrate that all physical effects light determine shapes, locations, brightnesses individual stars galaxies can be accurately represented in this formalism. By using large scale grid computing,...
We have measured the |$\gamma$|-ray energy spectrum from thermal neutron capture, |${}^{157}$|Gd|$(n,\gamma)$|, on an enriched |$^{157}$|Gd target (Gd|$_{2}$|O|$_{3}$|) in range 0.11 MeV up to about 8 MeV. The was placed inside germanium spectrometer of ANNRI detector at J-PARC and exposed a beam Japan Spallation Neutron Source (JSNS). Radioactive sources (|$^{60}$|Co, |$^{137}$|Cs, |$^{152}$|Eu) |$^{35}$|Cl(|$n$|,|$\gamma$|) reaction were used determine spectrometer's detection...
Abstract Natural gadolinium is widely used for its excellent thermal neutron capture cross section, because of two major isotopes: $^{\rm 155}$Gd and 157}$Gd. We measured the $\gamma$-ray spectra produced from on targets comprising a natural film enriched (in Gd$_{2}$O$_{3}$ powder) in energy range 0.11 MeV to 8.0 MeV, using ANNRI germanium spectrometer at MLF, J-PARC. The freshly analyzed data 155}$Gd($n, \gamma$) reaction are improve our previously developed model (ANNRI-Gd model)...
The choice of the correct density profile is crucial in laser wakefield acceleration. In this work, both subsonic and supersonic gas targets are characterized by means fluid-dynamic simulations experimental interferometric measurements. studied different configurations, profiles most suitable for acceleration discussed.
Costello syndrome is a congenital disorder comprising characteristic face, severe feeding difficulties, skeletal, cardiac and skin abnormalities, intellectual disability predisposition to malignancies. It caused by heterozygous germline HRAS mutations mostly affecting Gly12 or Gly13, which impair HRAS-GTPase activity result in increased downstream signal flow independent of incoming signals. Functional analyses rarer identified individuals with attenuated phenotypes revealed altered GDP/GTP...
The statistics of peak counts in reconstructed shear maps contain information beyond the power spectrum, and can improve cosmological constraints from measurements spectrum alone if systematic errors be controlled. We study effect galaxy shape measurement on predicted with Large Synoptic Survey Telescope (LSST). use LSST image simulator combination N-body simulations to model realistic for different models. include both noise and, first time, shapes. find that considered have relatively...
The complete 10-year survey from the Large Synoptic Survey Telescope (LSST) will image $\sim$ 20,000 square degrees of sky in six filter bands every few nights, bringing final depth to $r\sim27.5$, with over 4 billion well measured galaxies. To take full advantage this unprecedented statistical power, systematic errors associated weak lensing measurements need be controlled a level similar errors. This work is first attempt quantitatively estimate absolute and properties on shear due most...
A main science goal for the Large Synoptic Survey Telescope (LSST) is to measure cosmic shear signal from weak lensing extreme accuracy. One difficulty, however, that with short exposure time (≃15 s) proposed, spatial variation of point spread function (PSF) shapes may be dominated by atmosphere, in addition optics errors. While errors mainly cause PSF vary on angular scales similar or larger than a single CCD sensor, atmosphere generates stochastic structures wide range scales. It thus...
Abstract Ultrafast optical probing is a widely used method of underdense plasma diagnostic. In relativistic plasma, the motion blur limits spatial resolution in direction motion. For many high-power lasers initial pulse duration 30–50 fs results 10–15 μm blur, which can be reduced by probe post-compression. Here we compression after compressor approach [Phys.-Usp. 62 , 1096 (2019); JINST 17 P07035 (2022)], where spectral broadening performed thin plates and followed reflections from...
We show the laser-driven acceleration of unprecedented, collimated (2 mrad) and quasi-monoenergetic (dE/E = 25%) electron beams with energy up to 50 MeV at 1 kHz repetition rate. The laser driver is a multi-cycle (15 fs) OPCPA system, operating 26 mJ (1.7 TW). scalability technology reported in this work pave way towards developing high brilliance X-ray sources for medical imaging, innovative devices brain cancer treatment represent step forward realization GeV beamline.
LENA (Low Energy Neutrino Astronomy) is a proposed next-generation neutrino detector based on 50 kilotons of liquid scintillator. The low detection threshold, good energy resolution and excellent background rejection inherent to the liquid-scintillator detectors make versatile observatory for low-energy neutrinos from astrophysical terrestrial sources. In framework European LAGUNA-LBNO design study, also considered as far very-long baseline beam CERN Pyhäsalmi (Finland). present contribution...
We have measured the $\gamma$-ray energy spectrum from thermal neutron capture, ${}^{157}$Gd$(n,\gamma){}^{158}$Gd, on an enriched $^{157}$Gd target (Gd$_{2}$O$_{3}$) in range 0.11 MeV up to about 8 MeV. The was placed inside germanium spectrometer of ANNRI detector at J-PARC and exposed a beam Japan Spallation Neutron Source (JSNS). Radioactive sources ($^{60}$Co, $^{137}$Cs, $^{152}$Eu) reaction $^{35}$Cl($n$,$\gamma$) were used determine spectrometer's detection efficiency for $\gamma$...
Abstract Optical probing is an indispensable tool in research and development. In fact, it has always been the most natural way for humankind to explore nature. However, objects consisting of transparent materials with a refractive index close unity, such as low-density gas jets, are typical example samples that often reach sensitivity limits optical techniques. We introduce advanced method employing multiple passes probe through object increase phase sensitivity, relay-imaging between...
We present a new interferometric technique for gas jets density characterization employing Wollaston shearing interferometer. The distinctive feature of this setup is the double pass probe beam through target facilitated by relay-imaging object arm that images on itself and preserves spatial information. results in two-fold increase sensitivity at same time as enables with arbitrary distribution tomographic reconstruction. capabilities double-pass interferometer are demonstrated...
We demonstrate a method to characterize the beam energy, transverse profile, charge, and dose of pulsed electron generated by 1 kHz TW laser-plasma accelerator. The is based on imaging with scintillating screen in an inhomogeneous, orthogonal magnetic field produced wide-gap dipole. Numerical simulations were developed reconstruct parameters accurately. has been experimentally verified calibrated using medical LINAC. energy measurement accuracy 6–20 MeV range proven be better than 10%....
The high energy electron experimental platform * at ELI-Beamlines will give to the users tunable beams with low spread and divergence, by employing laser-wakefield-acceleration scheme (LWFA) driven PW-class laser system working 10 Hz. offer great flexibility over beam parameter space is foreseen exploit different targets, acceleration laser-guiding advanced schemes. In this paper we summarize about more compact accelerators that can be envisioned use of really short (near single-cycle)...
The importance of a good model for the $\gamma$-ray energy spectrum from radiative thermal neutron capture on Gadolinium (Gd) is specially increased in present era Gd-enhanced $\bar{\nu}_e$-search detectors. Its an essential prerequisite MC studies to evaluate tagging efficiency, order enhance signal sensitivity Gd-loaded spectra produced enriched gadolinium targets ($^{\rm 155}$Gd, $^{\rm 157}$Gd and Natural Gd) range 0.11 MeV 8.0 MeV, were measured using ANNRI Germanium Spectrometer at...
The ELI-ELBA scientific program is devoted to the experimental investigation of different fundamental problems by using a combination multi-PW and sub-PW lasers available at ELI-Beamlines research facility. core plasma technology used laser wakefield acceleration, which needed produce ultra-relativistic electron beams in extremely short distances very high accelerating gradients (>100 MeV/mm). experiments driven systems aim acceleration multi-GeV for counter-propagating them with intense...