J. Tuozzolo
A5048020318- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Photocathodes and Microchannel Plates
- Nuclear Physics and Applications
- Particle physics theoretical and experimental studies
- Electron and X-Ray Spectroscopy Techniques
- High-Energy Particle Collisions Research
- Plasma Diagnostics and Applications
- Pulsed Power Technology Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Electrostatic Discharge in Electronics
- Advancements in Photolithography Techniques
- Fusion materials and technologies
- Spacecraft and Cryogenic Technologies
- Quantum Chromodynamics and Particle Interactions
- Electromagnetic Launch and Propulsion Technology
- Advanced Data Storage Technologies
- Experimental and Theoretical Physics Studies
- Radiation Therapy and Dosimetry
- Radiation Effects and Dosimetry
- Advanced Surface Polishing Techniques
Brookhaven College
2002-2024
Brookhaven National Laboratory
2015-2024
Thomas Jefferson National Accelerator Facility
2021
Cornell University
2018
RIKEN BNL Research Center
1999-2016
National Library of Luxembourg
2007
Stony Brook University
2007
Oak Ridge National Laboratory
2001
Associated Universities, Inc.
1986-1989
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...
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,...
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...
This design report describes the construction plans for world's first multi-pass SRF ERL. It is a 4-pass recirculating linac that recovers beam's energy by 4 additional, decelerating passes. All beams are returned deceleration in single beam pipe with large-momentum-aperture permanent magnet FFAG optics. Cornell University has been pioneering new class of accelerators, Energy Recovery Linacs (ERLs), characteristic set parameters. Technology prototyped essential any high brightness electron...
The Low Energy RHIC electron Cooling (LEReC) project at Brookhaven National Laboratory recently demonstrated for the first time cooling of hadron bunches with radio-frequency (rf) accelerated bunches. LEReC uses a high-voltage photoemission gun stringent requirements beam current, quality, and stability. has photocathode high-power fiber laser, novel cathode production, transport, exchange system. It been that can continually produce high-current quality suitable cooling. We describe...
A high-current high-brightness electron accelerator for low-energy RHIC cooling (LEReC) was successfully commissioned at Brookhaven National Laboratory. The LEReC includes a dc photoemission gun, laser system, photocathode delivery magnets, beam diagnostics, superconducting rf booster cavity, and set of normal conducting cavities to provide enough flexibility tune the in longitudinal phase space. Cooling with nonmagnetized accelerated beams requires corrections obtain small momentum spread...
A cost-effective method to construct accelerator-quality permanent magnets based on a single tuning method, that simultaneously corrects all sources of field errors, opens pathway other future applications.
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...
The energy stored in the RHIC beam is about 200 kJ per ring at design and intensity. To prevent quenching of superconducting magnets or material damage, will be safely disposed by an internal abort system, which includes kicker magnets, pulsed power supplies, dump absorber. Disposal heavy ions, such as gold, imposes constraints more severe than those for proton beams equal In order to minimize thermal shock carbon-fiber block, bunches must laterally dispersed. nominal horizontal deflection...
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 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.
Cornell University has prototyped technology essential for any high brightness electron ERL. This includes a DC gun and an SRF injector Linac with world-record current normalized in bunch train, high-current CW cryomodule, high-power beam stop, several diagnostics tools high-brightness beams, e.g. slid measurements 6-D phase-space densities, fast wire scanner profiles, loos diagnostics. All these are now available to equip one-cryomodule ERL, laboratory space been cleared out is radiation...
Beam transfer from the AGS to RHIC is performed in single-bunch mode. Close spacing of bunches collider requires an injection kicker with a rise time <90 nsec, suggesting adoption travelling wave structure. The required vertical kick 0.186 T/spl middot/m provided by 4 magnets, each 1.12 m long 48.4/spl times/48.4 mm aperture and operated at 1.6 kA. constructed as "C" cross section magnet, which ferrite high-permittivity dielectric sections alternate. blocks provide capacity necessary for...
The maximum temperatures expected on both 220 /spl mu/g/cm/sup 2/ and 400 carbon foils, used to strip the 1 GeV H beam at injection into accumulator ring of Spallation Neutron Source (SNS), were determined by finite-element analysis. This will have a pulse length ms with repetition rate 60 Hz an average current over single 18.2 mA. foil size be 10 mm/spl times/30 mm mounted in 20 cm diameter stainless steel pipe area SNS. In model, heat generated was radiated wall pipe, which exposed ambient...