A5047531472- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Gyrotron and Vacuum Electronics Research
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Engineering Technology and Methodologies
- Plasma Diagnostics and Applications
- Sensor Technology and Measurement Systems
- Pulsed Power Technology Applications
- Electron and X-Ray Spectroscopy Techniques
- Electromagnetic Simulation and Numerical Methods
- Photocathodes and Microchannel Plates
- X-ray Spectroscopy and Fluorescence Analysis
- Microwave and Dielectric Measurement Techniques
- Advanced Measurement and Metrology Techniques
- Near-Field Optical Microscopy
- Laser-Plasma Interactions and Diagnostics
- Laser Design and Applications
- Advanced Sensor Technologies Research
- Advanced Data Storage Technologies
- Advancements in Photolithography Techniques
- Atomic and Molecular Physics
Brookhaven National Laboratory
2014-2024
Brookhaven College
2007-2023
Institute of Applied Physics
2023
Ivanovo State Power University
2019
Kuban State Agrarian University
2017
RIKEN BNL Research Center
2000-2016
Omsk State Technical University
2011-2016
National Library of Luxembourg
2007
Tech-X Corporation (United States)
2006
Dubna State University
2006
A new experiment is described to detect a permanent electric dipole moment of the proton with sensitivity $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant are discussed and techniques address them presented. The measurement sensitive physics beyond Standard Model at scale 3000~TeV.
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...
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,...
We have constructed, analytically and numerically, a class of self-consistent six-dimensional (6D) phase space stationary distributions. Stationary distributions allow us to study the halo development mechanism without it being obscured by beam redistribution its effect on formation. The is then mismatched longitudinally and/or transversely, we explore formation longitudinal transverse halos in 3D axisymmetric bunches. find that forms first for comparable mismatches because tune depression...
A detailed study of the influence space charge on crossing second-order resonances is presented and associated with space-charge limit high-intensity rings. Two-dimensional simulation studies are compared envelope models, which agree in finding an increased intensity due to coherent frequency shift. This result also found for realistic bunched beams multiturn injection painting. Characteristic features such as tune splitting, structure resonances, role instabilities discussed detail. The...
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.
We present a particle core model study of the space charge effect on high intensity synchrotron beams, with specific emphasis Proton Storage Ring (PSR) at Los Alamos National Laboratory. Our formulation includes realistic lattice focusing and dispersion. transport both matched mismatched beams through real structure compare results those an equivalent uniform-focusing approximation. The effects finite momentum spread resonance behavior are specifically targeted. Stroboscopic maps envelope...
A realistic treatment of halo formation must take into account 3D beam bunches and 6D phase space distributions. We recently constructed, analytically numerically, a new class self-consistent stationary distributions, which allowed us to study the development mechanism without being obscured by effect redistribution. In this paper we consider nonstationary distributions how characteristics compare with those obtained using distribution. then discuss redistribution on mechanism. contrast...
High-energy electron cooling can open new possibilities in particle physics by producing high-quality hadron beams colliders, and is presently considered for several accelerator projects. However, it also presents many unique features challenges. For example, an accurate estimate of the times requires a detailed calculation process, which takes place simultaneously with various diffusive mechanisms. This task becomes even more challenging when performed directly at collision energy puts...
The Low Energy Relativistic Heavy Ion Collider (RHIC) Electron Cooler (LEReC) is the world's first electron cooler using rf-accelerated bunches. Recently, cooling of gold ion beams in RHIC by 1.6 and 2.0 MeV electrons was successfully achieved. Along with velocity spread alignment beam, space-charge force between ions also plays an important role process. In order to investigate dynamics bunched provide guidance for LEReC operation, a simulation code developed, which includes nonmagnetized...
Resonance-driven collective instabilities of charged-particle beams were extensively studied in connection with high-current transport systems, leading to restrictions imposed on the zero-current phase advance. In this paper, we discuss application such parametric circular machines. This effect is directly related space-charge limit rings and its understanding crucial importance. Its relation coherent resonance condition an integer type explained. Practical resonant responses both structural...
Fundamental advances in experimental nuclear physics will require ion beams with orders of magnitude luminosity increase and temperature reduction. One the most promising particle accelerator techniques for achieving these goals is electron cooling, where beam repeatedly transfers thermal energy to a copropagating beam. The dynamical friction force on fully ionized gold moving through magnetized unmagnetized distributions has been simulated, using molecular dynamics that resolve close binary...
High-energy electron cooling, presently considered as an essential tool for several applications in high-energy and nuclear physics, requires accurate description of the friction force which ions experience by passing through beam. Present low-energy coolers can be used a detailed study force. In addition, parameters cooler chosen manner to reproduce regimes expected future operation. Here, we report set dedicated experiments CELSIUS aimed at magnetized Some results comparison experimental...
The world's first electron cooling based on the rf acceleration of bunches was experimentally demonstrated at Low Energy RHIC Electron Cooler (LEReC) Brookhaven National Laboratory. critical step in obtaining Au ions collider with this new approach matching and ion relativistic $\ensuremath{\gamma}$-factors a relative error less than $5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$. Since beam kinetic energy just 1.6 MeV, it required to set absolute electrons an accuracy better...
The physics interest in a luminosity upgrade of RHIC requires the development cooling-frontier facility. Detailed calculations were made electron cooling stored beams. This has been followed by beam dynamics simulations to establish feasibility creating necessary beam. accelerator will be superconducting Energy Recovery Linac (ERL). An intensive experimental R&D program engages various elements accelerator, as described 24 contributions 2007 PAC.
Space charge presents a fundamental limitation to high intensity circular accelerators. Its effects are especially important in the latest designs for high-intensity proton rings, which require beam losses much smaller than presently achieved existing facilities. It is therefore necessary understand major space-charge could lead emittance growth and associated loss. In this paper, we explore excitation of high-order collective modes instabilities driven by coupling resonances. Such studies...
High‐energy electron cooling for RHIC presents many unique features and challenges. An accurate estimate of the times requires detailed simulation process. The first step towards such calculations is to have an description force. Numerical simulations are being used explore various friction force which appear due several effects, including anisotropy distribution in velocity space effect a strong solenoidal magnetic field. These aspects studied detail using VORPAL code, explicitly resolves...