Volodymyr Rodin
A5103019942- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Atomic and Molecular Physics
- Atomic and Subatomic Physics Research
- Laser-Plasma Interactions and Diagnostics
- Muon and positron interactions and applications
- Diamond and Carbon-based Materials Research
- Nuclear Physics and Applications
- Crystallography and Radiation Phenomena
- Superconducting Materials and Applications
- Nuclear reactor physics and engineering
- Cold Atom Physics and Bose-Einstein Condensates
- Photocathodes and Microchannel Plates
- Electron and X-Ray Spectroscopy Techniques
- Laser Material Processing Techniques
- Pulsed Power Technology Applications
- Material Properties and Applications
- Magnetic confinement fusion research
- Solid State Laser Technologies
- Engineering Applied Research
- Dust and Plasma Wave Phenomena
- Dark Matter and Cosmic Phenomena
University of Liverpool
2019-2025
Taras Shevchenko National University of Kyiv
2015-2024
Cockcroft Institute
2019-2023
Sci-Tech Daresbury
2023
European Organization for Nuclear Research
2023
Belarusian State University of Informatics and Radioelectronics
2007
We report on laser cooling of a large fraction positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P transition with broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced magnetic and electric field-free environment. observe two different laser-induced effects. first effect an increase number atoms after time has spent long-lived 2^{3}P states. second one-dimensional Doppler Ps, reducing cloud's temperature from 380(20) to 170(20) K....
Abstract Recent nanotechnology advances enable fabrication of layered structures with controllable inter-layer gap, giving the ultra-violet (UV) lasers access to solid-state plasmas which can be used as medium for electron acceleration. By using a linearly polarized 3 fs-long laser pulse 100 nm wavelength and 10 $$^{21}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>21</mml:mn> </mml:msup> </mml:math> W/cm $$^2$$ <mml:mn>2</mml:mn> peak intensity,...
Abstract A powerful and robust control system is a crucial, often neglected, pillar of any modern, complex physics experiment that requires the management multitude different devices their precise time synchronisation. The AEḡIS collaboration presents CIRCUS, novel, autonomous optimised for time-critical experiments such as those at CERN’s Antiproton Decelerator and, more broadly, in atomic quantum research. Its setup based on Sinara/ARTIQ TALOS, integrating ALPACA analysis pipeline, last...
Antihydrogen formation at AEgIS CERN leverages charge exchange between Rydberg positronium (Ps*) and antiprotons, with cross-sections scaling the Ps principal quantum number $n^4$ inversely relative velocity $𝑣^{−2}$. However, motional Stark effect mismatch antiprotons impose stringent constraints, limiting efficiency. Advances in transmission converters mitigate self-ionization losses improve alignment, promising a significant boost antihydrogen yield. This work evaluates cross-sections,...
The experimental demonstration of positronium laser cooling with stationary broadband pulses negative detuning is briefly described. Considerations on the limits current experiment and possible future developments follow. In particular, benefit positron remoderation, use a magnetic field, polarization, pulse shaping, coherent deceleration are shortly discussed.
Primary goal of the AEḡIS experiment is to precisely measure free fall antihydrogen within Earth’s gravitational field. To this end, cold (≈50 K) will traverse a two-grid moiré deflectometer before annihilating onto position-sensitive detector, which shall determine vertical position annihilation vertex relative grids with micrometric accuracy. Here, we introduce vertexing detector based on modified mobile camera sensor and experimentally demonstrate that it can antiproton annihilations...
Charged particle acceleration using solid-state nanostructures has attracted attention in recent years as a method of achieving ultra-high-gradient the TV/m domain. More concretely, metallic hollow could be suitable for through excitation wakefields by laser or high-intensity charged beam high-density plasma. For instance, due to their special channelling properties well optoelectronic and thermo-mechanical properties, carbon nanotubes an excellent medium this purpose. This article...
The ISOLDE facility at CERN delivers the largest range of low-energy radioactive beams, exploited by several detector systems to investigate nuclear properties from stable isotopes very exotic close neutron or proton drip lines. These studies can largely benefit use a high-resolution fragment separator. To achieve this goal, an innovative spectrometer based on compact superconducting (SC) ring, Isolde Superconducting Recoil Separator (ISRS), is being studied. ring will operate as isochronous...
Modern physics experiments are frequently very complex, relying on multiple simultaneous events to happen in order obtain the desired result. The experiment control system plays a central role orchestrating measurement setup: However, its development is often treated as secondary with respect hardware, importance becoming evident only during operational phase. Therefore, AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) collaboration has created framework for easily coding...
A metal active mirror with the curvature of its central region variable within wide limits was proposed, made, and investigated. Promising applications such a in solid-state laser resonator for correction thermal lens effects were demonstrated.
Many upcoming experiments in antimatter research require low-energy antiproton beams. With a kinetic energy the order of 100 keV, standard magnetic components to control and focus beams become less effective. Therefore, electrostatic are being developed installed transfer lines storage rings. However, there is no equipment available precisely map check electric field generated by these elements. Instead, one has trust simulations and, therefore, depend on tight fabrication tolerances. Here...
The LHC heavy-ion program with ${^{208}\mathrm{Pb}}^{82+}$ beams will benefit from a significant increase of the beam intensity when entering its high-luminosity era in Run 3 (2023). stored energy is expected to surpass 20 MJ per beam. equipped betatron collimation system, which intercepts transverse halo and protects sensitive equipment such as superconducting magnets against losses. However, nuclear fragmentation electromagnetic dissociation ions collimators generates flux secondary...
A new versatile facility LEETECH for detector R&D, tests and calibration is designed constructed.It uses electrons produced by the photoinjector PHIL at LAL, Orsay provides a powerful tool wide range R&D studies of different concepts delivering "mono-chromatic" samples low energy with adjustable intensity.Among other innovative instrumentation techniques, will be used testing various gaseous tracking detectors studying Micromegas/InGrid concept which has very promising characteristics...
A theoretical proposal is made and an experimental demonstration reported of the desirability using structures with open pores in construction cooled laser mirrors a separating layer few microns thick. The aim to increase optical damage threshold mirror surfaces. It that thermal deformation water-cooled at center illuminated zone ~50 mm diameter ∼λ /30, where λ =10.6 μ for maximum steady-state heat flux ∼500 W/cm2. rate removal per unit surface area about 2.5 kW/cm2.
Abstract First‐principles calculations of the band structure and dielectric function Ir 3 Si 5 are presented. We find this compound to be characterized by an indirect gap 0.97 eV. A number direct transitions about 1 eV have been also determined. Features in dependence imaginary real parts on photon energy discussed comparison with data for some other semiconducting silicides. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
The FLUKA Monte Carlo code has recently undergone significant enhancements, driven by needs from its user community. Key improvements are discussed, such as a new point-wise treatment for the interactions of low-energy neutrons, incorporation model nuclear elastic scattering protons below 250 MeV, explicit generation synchrotron radiation photons during charged particle tracking, revised modeling approach coherent effects in bent crystals, and addition arc-DPA scoring. While improving...
The AEg̅IS collaboration at CERN’s AD produces antihydrogen atoms in the form of a pulsed, isotropic source with precisely defined formation time. has recently undergone major upgrades to fully benefit from increased number colder antiprotons provided by new ELENA decelerator and move toward forming horizontal beam directly investigate influence gravity on H̅ atoms, thereby probing Weak Equivalence Principle for antimatter. This contribution gives an overview these as well subsequent results...
The ISOLDE Scientific Infrastructure at CERN offers a unique range of post-accelerated radioactive beams. scientific program can be improved with the “Isolde Superconducting Recoil Separator” (ISRS), an innovative spectrometer able to deliver unprecedented (A, Z) resolution. In this paper we present overview physics and ongoing technical developments.
We report on laser cooling of a large fraction positronium (Ps) in free-flight by strongly saturating the $1^3S$-$2^3P$ transition with broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced magnetic and electric field-free environment. observe two different laser-induced effects. first effect an increase number atoms after time has spent long-lived $3^3P$ states. second one-dimensional Doppler Ps, reducing cloud's temperature from 380(20) K to 170(20) K....
Abstract Charged particle acceleration using solid-state nanostructures is attracting new attention in recent years as a method of achieving ultra-high gradients the order TV/m. The use carbon nanotubes (CNTs) has potential to overcome limitations natural crystals, e.g. channelling aperture and thermo-mechanical robustness. In this work, we present preliminary particle-in-cell simulation results laser beam interaction with single CNT, modelled 20 parallel plates Carbon ions electrons. This...
Solid-state based wakefield acceleration of charged particles was previously proposed to obtain extremely high gradients on the order 1-10 TeV/m. In recent years possibility using either metallic or carbon nanotube structures is attracting new attention. The use nanotubes would allow us accelerate and channel overcoming many limitations natural crystals, e.g. channeling aperture restrictions thermal-mechanical robustness issues. this paper, we propose a potential proof concept experiment...