A5047146854- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Spacecraft and Cryogenic Technologies
- Photocathodes and Microchannel Plates
- Particle Detector Development and Performance
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal-Catalyzed Oxygenation Mechanisms
- Crystallography and molecular interactions
- Gyrotron and Vacuum Electronics Research
- Metal complexes synthesis and properties
- Electron and X-Ray Spectroscopy Techniques
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Magnetism in coordination complexes
- Particle physics theoretical and experimental studies
- Advanced Thermodynamic Systems and Engines
- Advancements in Photolithography Techniques
- Radiative Heat Transfer Studies
- Electrochemical Analysis and Applications
- Heat Transfer and Boiling Studies
- Laser-Plasma Interactions and Diagnostics
- Advanced X-ray Imaging Techniques
Brookhaven National Laboratory
2013-2024
RIKEN BNL Research Center
2024
Brookhaven College
2023
Thomas Jefferson National Accelerator Facility
2021
National Library of Luxembourg
2007
University of Münster
1999
Supercon (United States)
1991
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,...
The iron(III) complexes [Fe2(HPTB)(μ-OH)(NO3)2](NO3)2·CH3OH·2H2O (1), [Fe2(HPTB)(μ-OCH3)(NO3)2](NO3)2·4.5CH3OH (2), [Fe2(HPTB)(μ-OH)(OBz)2](ClO4)2·4.5H2O (3), [Fe2(N-EtOH-HPTB)(μ-OH)(NO3)2](ClO4)(NO3)·3CH3OH·1.5H2O (4), [Fe2(5,6-Me2-HPTB)(μ-OH)(NO3)2](ClO4)(NO3)·3.5CH3OH·C2H5OC2H5·0.5H2O (5), and [Fe4(HPTB)2(μ-F)2(OH)4](ClO4)4·CH3CN·C2H5OC2H5·H2O (6) were synthesized (HPTB = N,N,N',N'-tetrakis(2-benzimidazolylmethyl)-2-hydroxo-1,3-diaminopropane, N-EtOH-HPTB N,N,N',N'-tetrakis(N'...
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...
The Coherent Electron Cooling Proof of Principle (CeC PoP) system is being installed in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. It will demonstrate ability relativistic electrons to cool a single bunch heavy ions RHIC. This technique may increase beam luminosity by as much tenfold. Within scope this experiment, 112 MHz 2 MeV Superconducting Radio Frequency (SRF) electron gun coupled with cathode stalk mechanism, two normal conducting 500 single-cell...
Linac Coherent Light Source II (LCLS-II), a 4 GeV continuous-wave (CW) superconducting electron linear accelerator, is to be constructed in the existing two mile facility at SLAC National Accelerator Laboratory. The first light from new scheduled 2020. LCLS-II consists of thirty-five 1.3 GHz and 3.9 cryomodules. cryomodules require cryogenic cooling for super-conducting niobium cavities 2.0 K, low temperature thermal intercept 5.5-7.5 shield 35-55 K. equivalent 4.5 K refrigeration capacity...
High-bunch-charge photoemission electron-sources operating in a continuous wave (CW) mode are required for many advanced applications of particle accelerators, such as electron coolers hadron beams, electron-ion colliders, and free-electron lasers. Superconducting RF (SRF) has several advantages over other electron-gun technologies CW it offers higher acceleration rate potentially can generate bunch charges average beam currents. A 112 MHz SRF photoinjector (gun) was developed at Brookhaven...
The new diiron complex [Fe2(tbpo){O2As(CH3)2}(CH3O)(CH3OH)](ClO4)3 · 5 CH3OH 2 H2O (1) containing a (μ-alkoxo)(μ-dimethylarsinato)diiron(III) core was synthesized using the heptadentate ligand N,N,N′,N′-Tetrakis(2-benzimidazolylmethyl)-1,3-diamino-2-propanol (Htbpo). characterized structurally by X-ray crystallography. 1reproduces coordination mode and stoichiometry of proposed purple acid phosphatase-arsenate inhibitor complex. More importantly, 1 is good functional model for activation...
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.
A selective method for the determination of hydrogen peroxide in presence other oxidants is presented. The formation a coloured adduct reaction dinuclear iron(III) complex with used quantification peroxide. product detected at wavelengths between 570 and 600 nm. major advantage immediate reaction. Other peroxides exhibit little interfence, typically contributing to an error 0.1% same concentration. was optimized household products using microplate spectrophotometry. limit detection 3 µmol...
To improve RHIC luminosity for heavy ion beam energies below 10 GeV/nucleon, the Low Energy electron Cooler (LEReC) is currently under commissioning at BNL. The Linac of LEReC designed to deliver a 1.6 MeV 2.6 beam, with rms dp/p less than 5e-4. A 704 MHz superconducting radio frequency (SRF) booster cavity in this provides up 2.2 accelerating voltage. With such low energy and very demanding spread requirement, control Higher Order Modes (HOMs) cavities becomes critical needs be carefully...
The Coherent electron Cooling (CeC) Proof of Principle (PoP) experiment is proposed to be installed in the Relativistic Heavy Ion Collider (RHIC) demonstrate proton and ion beam cooling with this new technique that may increase luminosity certain cases, by as much tenfold. Within scope project, a 112 MHz, 2MeV Superconducting Radio Frequency (SRF) gun 704 MHz 20MeV 5-cell SRF cavity will at IP2 RHIC ring. superconducting RF cooled liquid helium bath 4.4 K. super-fluid 2.0 This paper...