A5068388295- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- High-pressure geophysics and materials
- Magnetic confinement fusion research
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Particle Detector Development and Performance
- Advanced Chemical Physics Studies
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Detection and Scintillator Technologies
- Plasma Diagnostics and Applications
- CCD and CMOS Imaging Sensors
- Ionosphere and magnetosphere dynamics
- Laser-Matter Interactions and Applications
- Mass Spectrometry Techniques and Applications
- Laser Design and Applications
- Advanced NMR Techniques and Applications
- Atomic and Subatomic Physics Research
- Fusion materials and technologies
- Gas Dynamics and Kinetic Theory
- Advanced X-ray Imaging Techniques
- Geotechnical and Mining Engineering
- Gas Sensing Nanomaterials and Sensors
- Radioactive contamination and transfer
- Magnetism in coordination complexes
University of Warsaw
2011-2022
Institute of Plasma Physics and Laser Microfusion
2012-2021
Université de Bordeaux
2014-2019
Centre Lasers Intenses et Applications
2014-2019
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2014-2019
Centre National de la Recherche Scientifique
2014-2019
Institute for Laser Technology
2016
Universidad de Salamanca
2016
Spanish Center for Pulsed Lasers
2016
Japan Atomic Energy Agency
2014
Two Triple Gas Electron Multiplier (Triple-GEM) detectors were developed for high-resolution X-ray spectroscopy measurements tokamak plasma to serve as evolution monitoring in soft region (SXR). They provide energy resolved fast dynamic radiation imaging the SXR with 0.1 kHz frequency. Detectors designed and constructed continuous data-flow precise position measurement of emitted by metal impurities, W46+ Ni26+ ions, at 2.4 keV 7.8 photon energies, respectively. High counting rate capability...
Imaging plates (IPs) are commonly used as passive detectors in laser-plasma experiments. We calibrated at the ELSA electron beam facility (CEA DIF) five different available types of IPs (namely, MS-SR-TR-MP-ND) to electrons from 5 18 MeV. In context diagnostic development for PETawatt Aquitaine Laser (PETAL), we investigated use stacks IP order increase detection efficiency and get response independent neighboring materials such X-ray shielding detector supports. also measured fading...
The first results of the Dynamic Ergodic Divertor in TEXTOR, when operating m/n=3/1 mode configuration, are presented. deeply penetrating external magnetic field perturbation this configuration increases toroidal plasma rotation. Staying below excitation threshold for m/n=2/1 tearing mode, rotation is always direction current, even if projection rotating opposite direction. observed consistent with a radial electric field, generated by an enhanced electron transport ergodic layers near...
Thanks to their high dynamic range and ability withstand electromagnetic pulse, imaging plates (IPs) are commonly used as passive detectors in laser-plasma experiments. In the framework of development diagnostics for Petawatt Aquitaine Laser facility, we present an absolute calibration spatial resolution study five different available types IP (namely, MS-SR-TR-MP-ND) performed by using laser-induced K-shell X-rays emitted a solid silver target irradiated laser ECLIPSE at CEntre Lasers...
The high resolution X-Ray crystal spectrometer at the JET tokamak has been upgraded with main goal of measuring tungsten impurity concentration. This is important for understanding accumulation in plasma after installation ITER-like wall (main chamber: Be, divertor: W). contribution provides details a focus on aspects spectral analysis and parameter calculation. In particular, we describe determination sensitivity: concentration determination.
This article presents a fast charge histogramming method for the position sensitive X-ray GEM detector. The energy resolved measurements are carried out simultaneously 256 channels of whole process is performed in 21 FPGA chips (Spartan-6 series from Xilinx) . results stored an external DDR3 memory. structure electronic measuring equipment and firmware functionality implemented FPGAs described. Examples test presented.
This paper describes the results of a series experiments conducted with PALS laser at intensities interest for shock ignition approach to inertial fusion.In particular, we addressed generation hot electrons (HE) (determining their average energy and number), as well parametric instabilities which are producing them.In addition, studied impact HE on formation dynamics strong shocks.
The and 3p–4d inner shell excitation lines in addition to 2p–3s have been identified from the spectrum taken by an upgraded high-resolution x-ray spectrometer. It is found analysis of absolute intensities that W Mo concentrations are range , respectively, with a ratio ∼5% JET ITER-like wall configuration for ELMy H-mode plasmas plasma current 2.0–2.5 MA, toroidal magnetic field 2.7 T neutral beam injection power 14–18 MW. For purpose checking self-consistency, it confirmed concentration...
Responses of Fuji Imaging Plates (IPs) to proton have been measured in the range 1-200 MeV. Mono-energetic protons were produced with 15 MV ALTO-Tandem accelerator Institute Nuclear Physics (Orsay, France) and, at higher energies, 200-MeV isochronous cyclotron Institut Curie—Centre de Protonthérapie d’Orsay France). The experimental setups are described and photo-stimulated luminescence responses for MS, SR, TR IPs presented compared existing data. For interpretation results, a sensitivity...
A novel approach to the Gas Electron Multiplier<sup>1</sup> (GEM) detector readout is presented. Unlike commonly used methods, based on discriminators, and analogue FIFOs,[ method developed uses simultaneously sampling high speed ADCs advanced FPGA-based processing logic estimate energy of every single photon. Such applied GEM strip signal. It especially useful in case crystal-based spectrometers for soft X-rays, where higher order reflections need be identified rejected. For purpose...
Recently, the dynamic ergodic divertor (DED) of TEXTOR has been studied in an m/n = 3/1 set-up which is characterized by a relatively deep penetration perturbation field. The field creates (a) helical divertor, (b) pattern and/or (c) excitation tearing modes, depending on whether DED current static, rotating co-current direction or counter-current direction. Characteristic properties such as high recycling regime enhanced shielding have studied. A strong effect ergodization spin up plasma...
We have measured the synchrotron-induced photofragmentation of isolated 2-deoxy-D-ribose molecules (C(5)H(10)O(4)) at four photon energies, namely, 23.0, 15.7, 14.6, and 13.8 eV. At all energies above molecule's ionization threshold we observe formation a large variety molecular cation fragments, including CH(3) (+), OH(+), H(3)O(+), C(2)H(3) C(2)H(4) CH(x)O(+) (x=1,2,3), C(2)H(x)O(+) (x=1-5), C(3)H(x)O(+) (x=3-5), C(2)H(4)O(2) C(3)H(x)O(2) (+) (x=1,2,4-6), C(4)H(5)O(2) C(4)H(x)O(3) (x=6,7),...
This paper presents the response calibration of Imaging Plates (IPs) for electrons in 40-180 MeV range using laser-accelerated at Laboratoire d’Optique Appliquée (LOA), Palaiseau, France. In process, energy spectrum and charge electron beams are measured by an independent system composed a magnetic spectrometer Lanex scintillator screen used as calibrated reference detector. It is possible to insert IPs different types or stacks this order detect dispersed simultaneously. The values inferred...
A 200 mJ laser pulse energy, 39 fs-pulse duration, 10 μm focal spot, p-polarized radiation has been employed to irradiate thin Au foils produce proton acceleration in the forward direction. Gold were high density relativistic electrons emission direction generate a electric field driving ion acceleration. Measurements performed by changing position respect of target surface. Proton was monitored using fast SiC detectors time-of-flight configuration. up about 20 Me V, with narrow energy...
Abstract The double laser pulse approach to relativistic electron beam (REB) collimation in solid targets has been investigated at the LULI-ELFIE facility. In this scheme two collinear pulses are focused onto a target with given intensity ratio and time delay generate REBs. magnetic field generated by first laser-driven REB is used guide second delayed pulse. We show how can be controlled properly adjusting of focus size between pulses. found that maximum clearly dependent on focal spot...
This paper presents analysis of processing method the signal from Gas Electron Multiplier (GEM) detector acquired in our Field-Programmable Gate Array (FPGA) based readout system. We have found that simple GEM received charge amplifier, sampled at 100MHz with 10-bit resolution, after low-pass filtering 15 MHz cut-off frequency, provides accuracy similar to obtained by raw 2.5 GHz frequency 8-bit resolution. Even when 3 bits are lost due long term instability and analog part system -...
We present experimental results obtained at the CELIA laboratory using laser ECLIPSE to study proton acceleration from ultra-intense pulses. Several types of targets were irradiated with different conditions (focusing and prepulse level). Proton emission was characterized time-of-flight detectors (SiC diamond) a Thomson parabola spectrometer. In all cases, maximum energy observed protons order 260 keV large spectrum. Such characteristics are typical emitted following target normal sheath...
In this work, we describe the results of experiments performed at femtosecond ECLIPSE laser facility CELIA in Bordeaux. We irradiated targets constituted by aluminum foils various thicknesses and characterized accelerated protons with energies range interest for p+11B nuclear fusion. Time-of-flight measurements were using Chemical Vapor Deposition (CVD) monocrystalline diamond detectors, which are specifically designed to operate harsh environments where large ElectroMagnetic Pulses (EMPs)...
An unambiguous assignment of coupling pathways plays an important role in the description and rationalization NMR indirect spin-spin constants (SSCCs). Unfortunately, SSCC analysis visualization tools currently available to quantum chemists are restricted nonrelativistic theory. Here, we present theoretical foundation for novel relativistic techniques based on densities first-order current induced by nuclear magnetic dipole moments. Details implementation these ReSpect program package...
A motional Stark effect diagnostic at the tokamak TEXTOR has been constructed and brought recently into operation. In contrast to diagnostics used on other tokamaks, this reveals direction of magnetic field from intensity ratio π σ components emitted Balmer-α not a polarization measurement single line. Moreover, complete spectrum is measured which allows determining radial position measurement, in principle electric field.
A novel approach to the Gas Electron Multiplier (GEM) detector readout is presented. Unlike commonly used methods, based on discriminators[2],[3] and analogue FIFOs[1], method developed uses simultaneously sampling high speed ADCs advanced FPGA-based processing logic estimate energy of every single photon. Such applied GEM strip signal. It especially useful in case crystal-based spectrometers for soft X-rays, where higher order reflections need be identified rejected[5].
Imaging Plates (IP) are diagnostic devices which contain a photostimulable phosphor layer that stores the incident radiation dose as latent image. The image is read with scanner stimulates decay of electrons, previously excited by radiation, exposition to laser beam. This results in emitted light, detected photomultiplier tubes; so reconstructed. IPs have interesting feature can be reused many times, after erasing stored information. Algorithms convert signals detector Photostimulated...