Vladimir Litvinenko
A5068320470- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Magnetic confinement fusion research
- Laser Design and Applications
- Laser-Plasma Interactions and Diagnostics
- Advanced X-ray Imaging Techniques
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Photocathodes and Microchannel Plates
- Atomic and Molecular Physics
- Plasma Diagnostics and Applications
- Nuclear physics research studies
- Laser-induced spectroscopy and plasma
- Distributed and Parallel Computing Systems
- Laser-Matter Interactions and Applications
- Quantum Chromodynamics and Particle Interactions
- Crystallography and Radiation Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Electron and X-Ray Spectroscopy Techniques
- Radiation Detection and Scintillator Technologies
- Advanced Surface Polishing Techniques
Stony Brook University
2015-2024
Brookhaven National Laboratory
2015-2024
Voronezh State Technical University
2024
RIKEN BNL Research Center
2005-2022
Mount Sinai Hospital
2011
National Library of Luxembourg
2007
Duke University
1995-2004
Triangle Universities Nuclear Laboratory
2004
Durham University
2002
The physics programme and the design are described of a new collider for particle nuclear physics, Large Hadron Electron Collider (LHeC), in which newly built electron beam 60 GeV, up to possibly 140 energy collides with intense hadron beams LHC. Compared HERA, kinematic range covered is extended by factor twenty negative four-momentum squared, $Q^2$, inverse Bjorken $x$, while luminosity $10^{33}$ cm$^{-2}$s$^{-1}$ LHeC projected exceed integrated HERA two orders magnitude. devoted an...
This report is based on a ten-week program Gluons and the quark sea at high-energies, which took place Institute for Nuclear Theory (INT) in Seattle Fall 2010. The principal aim of was to develop sharpen science case an Electron-Ion Collider (EIC), facility that will be able collide electrons positrons with polarized protons light heavy nuclei high energies, offering unprecedented possibilities in-depth studies quantum chromodynamics (QCD). organized around following four major themes: (i)...
A nearly monochromatic beam of 100% linearly polarized γ rays has been produced via Compton backscattering inside a free electron laser optical cavity. The 12.2 MeV was obtained by 379.4 nm free-electron photons from 500 electrons circulating in storage ring. detailed description the γ-ray and outlook for future improvements are presented.Received 24 February 1997DOI:https://doi.org/10.1103/PhysRevLett.78.4569©1997 American Physical Society
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
The quality and intensity of gamma rays at the High Intensity gamma-ray Source are shown to make nuclear resonance fluorescence studies possible a new level precision efficiency. First experiments have been carried out using an intense (10(7) gamma/s) beam 100% linearly polarized, nearly monoenergetic, on semimagic nucleus (138)Ba. Negative parity quantum numbers assigned 18 dipole excitations (138)Ba between 5.5 MeV 6.5 from azimuthal gamma-intensity asymmetries.
This document presents BNL's plan for an electron-ion collider, eRHIC, a major new research tool that builds on the existing RHIC facility to advance long-term vision Nuclear Physics discover and understand emergent phenomena of Quantum Chromodynamics (QCD), fundamental theory strong interaction binds atomic nucleus. We describe scientific requirements such facility, following up community-wide 2012 white paper, 'Electron-Ion Collider: Next QCD Frontier', present design concept incorporates...
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...
Cooling intense high-energy hadron beams poses a major challenge for modern accelerator physics. The synchrotron radiation emitted from such is feeble; even in the Large Hadron Collider (LHC) operating with 7 TeV protons, longitudinal damping time about 13 hours. None of traditional cooling methods seem able to cool LHC-class protons beams. In this Letter, we present novel method coherent electron based on high-gain free-electron laser (FEL). This technique could be critical reaching high...
Continuous-wave photoinjectors operating at high accelerating gradients promise to revolutionize many areas of science and applications. They can establish the basis for a new generation monochromatic x-ray free electron lasers, high-brightness hadron beams, or microchip production. In this Letter we report on record-performing superconducting rf gun with ${\mathrm{CsK}}_{2}\mathrm{Sb}$ photocathode. The is generating charge bunches (up $10\text{ }\text{ }\mathrm{nC}/\text{bunch}$) low...
Abstract High brightness, high charge electron beams are critical for a number of advanced accelerator applications. The initial emittance the beam, which is determined by mean transverse energy (MTE) and laser spot size, one most important parameters determining beam quality. bialkali photocathodes illuminated visible have advantages quantum efficiency (QE) low MTE. Furthermore, Superconducting Radio Frequency (SRF) guns can operate in continuous wave (CW) mode at accelerating gradients,...
Cooling of beams gold ions using electron bunches accelerated with radio-frequency systems was recently experimentally demonstrated in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Such an approach is new and opens possibility this technique higher energies than possible electrostatic acceleration beams. The challenges include generation suitable for cooling, delivery required quality to cooling sections without degradation beam angular divergence energy spread,...
Abstract Laser-driven plasma accelerators provide tabletop sources of relativistic electron bunches and femtosecond x-ray pulses, but usually require petawatt-class solid-state-laser pulses wavelength λ L ~ 1 μ m. Longer- lasers can potentially accelerate higher-quality bunches, since they less power to drive larger wakes in dense plasma. Here, we report on a self-injecting accelerator driven by long-wave-infrared laser: chirped-pulse-amplified CO 2 laser ( ≈ 10 m). Through optical...
Typical bunch compression for a high-gain free-electron laser (FEL) requires large ratio. Frequently, this is distributed in multiple stages along the beam transport line. However, FEL driven by an energy recovery linac (ERL), must be accomplished single strong compressor located at line's end; otherwise electron would affected severely coherent synchrotron radiation (CSR) ERL's arcs. In such scheme, CSR originating from compressors could greatly degrade quality of beam. paper, we present...
Radiotherapy utilizes photons for treating cancer. Historically these have been produced by the bremsstrahlung process. In this paper we introduce Compton backscattering as an alternate method of photon production cancer treatment. is a well-established to produce high-energy (gamma rays) nuclear physics experiments. involves collision low-energy (eV) with (hundreds MeV) electron. It shown that scattered in direction opposite initial (backscattered) will energy desired beam therapy. The...
The first measurement of the ${}^{2}\mathrm{H}(\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\gamma}},n)p$ analyzing power near threshold has been performed using High-Intensity Gamma-ray Source (HIGS) at Duke Free-Electron Laser Laboratory. A 3.58 MeV $\ensuremath{\gamma}$-ray beam having an energy resolution $2.5%$ and $100%$ linear polarization was incident on active ${\mathrm{C}}_{6}{\mathrm{D}}_{12}$ target. Outgoing neutrons were detected parallel perpendicular to plane a lab angle...
The photon analyzing power for the photodisintegration of deuteron was measured seven gamma-ray energies between 2.39 and 4.05 MeV using linearly polarized beam high-intensity source at Duke Free-Electron Laser Laboratory. data provide a stringent test theoretical calculations inverse reaction, neutron–proton radiative capture reaction important Big-Bang nucleosynthesis. Our are in excellent agreement with potential model effective field theory calculations. Therefore, uncertainty baryon...
Parity quantum numbers for dipole-excited states of the nuclei $^{92}\mathrm{Zr}$ and $^{96}\mathrm{Mo}$ have been determined from azimuthal asymmetries nuclear resonance fluorescence intensities induced with linearly polarized photon beam $\mathrm{HI}\ensuremath{\gamma}\mathrm{S}$ facility at Duke University. This parity information is crucial an interpretation investigated $J=1$ as two-phonon excitations originating inhomogeneous phonon coupling.
In this letter we present a novel approach for high-energy high-luminosity electron-positron collider. Present designs colliders are either based on two storage rings with 100 km circumference maximum CM energy of 365 GeV or large linear accelerators high reach but lower luminosity, especially at the initial energies. A shortcoming collider is electric power consumption required to compensate beam losses from MW synchrotron radiation [1]. We propose use an Energy Recovery Linac (ERL) located...
Long wavelength infrared laser-driven plasma wakefield accelerators are investigated here in the self-modulated laser acceleration (SM-LWFA) and blowout regimes using 3D particle-in-cell simulations. The simulation results show that SM-LWFA regime, self-injection arises with wave breaking, whereas is not observed under conditions. breaking process regime occurs at a field strength significantly below 1D wave-breaking threshold. This intensifies higher power density suppressed low densities...
The effects of space charge play a significant role in modern-day accelerators, frequently constraining the beam parameters attainable an accelerator or chain. They also can limit luminosity hadron colliders operating either at low energies with sub-TeV high-brightness beams. latter is applied for strongly cooled proton and ion beams eRHIC---the proposed future electron-ion collider Brookhaven National Laboratory. Several schemes were to compensate space-charge coasting (e.g., continuous)...
3D numerical simulations of the interaction a powerful CO2 laser with hydrogen jets demonstrating role ionization in characteristics induced wakes are presented. Simulations using SPACE, parallel relativistic particle-in-cell code, performed support plasma wakefield accelerator experiments being conducted at Brookhaven National Laboratory (BNL) Accelerator Test Facility (ATF). A novelty SPACE code is its set efficient atomic physics algorithms that compute and recombination rates on grid...
We describe the first direct observation of significant suppression energy spread induced by coherent synchrotron radiation a pair conductive plates placed inside dipole magnet. In addition to various feedback loops improving stability beam parameters, our key innovation for this experiment is time-resolved variation within electron bunch, instead traditionally measured rms spread. present results experiments and compare them with rigorous analytical theory.