A5062826784- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Plasma Diagnostics and Applications
- Atomic and Molecular Physics
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Mass Spectrometry Techniques and Applications
- Particle Detector Development and Performance
- Photocathodes and Microchannel Plates
- Electron and X-Ray Spectroscopy Techniques
- Ion-surface interactions and analysis
- Nuclear Physics and Applications
- Laser-induced spectroscopy and plasma
- Advancements in Photolithography Techniques
- Muon and positron interactions and applications
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Subatomic Physics Research
- Radiation Effects in Electronics
- Pulsed Power Technology Applications
- Gyrotron and Vacuum Electronics Research
- Electrostatic Discharge in Electronics
- Radiation Therapy and Dosimetry
- Nuclear physics research studies
- Particle physics theoretical and experimental studies
- Laser-Plasma Interactions and Diagnostics
European Organization for Nuclear Research
2018-2022
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2020-2022
Brookhaven National Laboratory
2011-2020
University of Manchester
2018-2019
Massachusetts Institute of Technology
2016-2018
Thomas Jefferson National Accelerator Facility
2018
RIKEN BNL Research Center
2002-2016
Brookhaven College
2014
Stockholm University
1994-1997
National Institute of Standards and Technology
1995-1997
Abstract This analysis extends the previously published study of effect a nonadiabatic magnetic field on electron beam for different currents. Specifically, it presents 2-dimensional maps relative amplitudes radial oscillations in space defined by strengths and As before, gun drift region are immersed uniform to avoid distorting cyclotron motion. Unlike previous paper, cathode has radius 3 mm, which is more suitable EBIS applications. These show operating range such an optical system with...
Abstract This study benchmarks the CST Studio Suite and Trak codes in simulating an electron gun for a future C 6+ hadrontherapy installation. offers 3D simulation capabilities, allowing detailed modelling of complex geometries electromagnetic fields. Trak, on other hand, efficient 2D simulations, which can significantly reduce computational time while still providing valuable results. These studies are being conducted framework project dedicated to design initial stage linac. The studied is...
Abstract At REXEBIS, a higher electron current density accelerates charge breeding and allows for increased repetition rate ion throughput of the REX-ISOLDE system, while also extending physics reach towards very short-lived radioactive ions. This goal was pursued by introducing non-adiabatic gun. Since then, further characterization experiments have been carried out, focusing on reaching high states light ions, such that closed-shell configuration with exceptionally efficiency is attained,...
As part of a new heavy ion preinjector that will supply beams for the Relativistic Heavy Ion Collider and National Aeronautics Space Administration Radiation Laboratory, construction electron beam source (EBIS) is now being completed. This source, based on successful prototype Brookhaven Laboratory Test EBIS, designed to produce milliampere level currents all species, with q/m=(1/6)−(1/2). Among major components this are 5 T, 2-m-long, 204 mm diameter warm bore superconducting solenoid, an...
An accelerator of relativistic nuclei at an energy 6 GeV/u is presented in outline. The parameters the and characteristics superconducting magnets with iron-shape magnetic field employed it are given.
Head-on beam-beam compensation has been implemented in the Relativistic Heavy Ion Collider order to increase luminosity delivered experiments. We discuss principle of combining a lattice for resonance driving term and an electron lens tune spread compensation. describe technology its operational use. To date, scheme approximately doubled peak average luminosities.
This paper surveys the ongoing physics experiments at Electron Beam Ion Trap (EBIT) facility NIST, with particular attention paid to underlying physical principles involved. In addition, some new data on performance of our EBIT are presented, including results related determination trap width, ion temperature, and number highly charged ions in trap.
To compensate the beam-beam tune spread and resonance driving terms in polarized proton operation Relativistic Heavy Ion Collider (RHIC), we will introduce a low energy DC electron beam into each ring to collide head-on with opposing beam. The device provide is called an lens. In this article, using 6D weak-strong interaction simulation model, investigate effects of compensation lenses on dynamics for RHIC 250 GeV operation. Frequency maps, dynamic apertures, loss rates are calculated study....
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation E. Beebe, J. Alessi, S. Binello, T. Kanesue, D. McCafferty, Morris, M. Okamura, A. Pikin, Ritter, R. Schoepfer; Reliable operation of the Brookhaven EBIS for highly charged ion production RHIC NSRL. AIP Conference Proceedings 9 January 2015; 1640 (1): 5–11. https://doi.org/10.1063/1.4905394 Download citation...
RHIC EBIS will be used for producing multicharged ions from helium to uranium using primary various external ion sources. The is followed by an RFQ and short linac, forming the new preinjector which produce beams physics at NASA Space Radiation Laboratory, design of based on BNL Test EBIS, was a successful 10A electron current prototype. Improvements have been made in increase capacity trap, repetition frequency operation, current, acceptance injected ions, improve vacuum conditions...
The addition of a polarized 3 He ion source for use at the Relativistic Heavy Ion Collider (RHIC) Brookhaven National Laboratory would enable host new measurements, particularly in context planned eRHIC. We are developing such using metastability exchange optical pumping to polarize helium-3, which will be then transferred into RHIC’s Electron Beam Source ionization. aim deliver nuclear polarization near 70%, and roughly 10[Formula: see text] doubly-ionized He[Formula: ions created each 20...
A hollow electron beam has been proposed as an active control tool to remove the halo from high-energy, high-current hadron or ion machines (such High-Luminosity Large Hadron Collider). To study removal rate and assess effect on core, one of two lenses in Relativistic Heavy Ion Collider was changed a Gaussian profile profile. We describe design verification parameters well methods minimize distortions, which can result emittance increase. The alignment with by using backscattered detector...
Two electron lenses ($e$-lenses) have been in operation during the 2015 RHIC physics run as part of a head-on beam-beam compensation scheme. While lattice was chosen to reduce beam-beam-induced resonance-driving terms, reduced tune spread. This has demonstrated for first time. The scheme allows higher parameters and therefore intensities luminosity. In this paper, we detail design considerations verification beam $e$-lenses. Longitudinal transverse alignments with ion beams transfer function...
We describe our newly modified beam line and present its performance in conjunction with the National Institute of Standards Technology electron-beam ion trap. find that, contrary to previously reported results from similar sources, highest intensity time-averaged fluxes are achieved by letting ions boil out trap a continuous stream rather than periodically dumping produce pulsed beam. produced beams 3.0(6)×106 Xe44+ per second lower flux charge states up Xe49+. Also, mode, we created very...
The design and operation of a beam line for transporting charge-to-mass selecting highly charged ions extracted from the National Institute Standards Technology electron ion trap (EBIT) are described. This greatly extends range experiments possible at this facility. Using transport system, pure beams low-energy, up to Xe44+ have been produced with substantially higher fluxes than previously reported an EBIT source. Design choices computer modeling various components explained in detail.
Increasing the current density of electron beam in ion trap Electron Beam Ion Source (EBIS) BNL's Relativistic Heavy Collider facility would confer several essential benefits. They include increasing ions’ charge states, and therefore, energy out Booster for NASA applications, reducing influx residual ions trap, lowering average power load on collector, possibly also emittance extracted beam. Here, we discuss our findings from a computer simulation an gun with electrostatic compression up to...
Recently, the Californium Rare Isotope Breeder Upgrade (CARIBU) to Argonne Tandem Linac Accelerator System (ATLAS) was commissioned and became available for production of rare isotopes. Currently, an electron cyclotron resonance ion source is used as a charge breeder CARIBU beams. To further increase intensity improve purity neutron-rich beams accelerated by ATLAS, we are developing high-efficiency based on beam (EBIS). The EBIS will utilize state-of-the-art technology recently developed at...
The construction of the Californium Rare Isotope Breeder Upgrade (CARIBU) for Argonne National Laboratory ATLAS facility is completed and its commissioning being performed. In full capacity, CARIBU will use fission fragments from a 1 Curie (Ci) 252Cf source. ions be thermalized collected into low-energy ion beam by helium gas catcher, mass analyzed an isobar separator, charge bred to higher states acceleration in ATLAS. To reach energies E/A 10 MeV/u, one should inject with charge-to-mass...
An electron-beam simulation technique for high-resolution complete EBIS/T modelling is presented. The was benchmarked on the high compression HEC2 test-stand with an electron beam current, current density and energy of 10 A, kA/cm2 49.2 keV, immersed at REXEBIS characteristics 0.4 200 A/cm2 4.5 keV. In both Brillouin-like beams radius varies from several millimeters gun, through some hundreds micrometers in ionization region to a few centimeters collector over total length meters. We report...