James Jamilkowski
A5025759593- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Magnetic confinement fusion research
- Photocathodes and Microchannel Plates
- Radiation Effects in Electronics
- Silicon and Solar Cell Technologies
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Plasma Diagnostics and Applications
- Advancements in Photolithography Techniques
- Silicon Carbide Semiconductor Technologies
- Advanced X-ray Imaging Techniques
- Electron and X-Ray Spectroscopy Techniques
- Laser Design and Applications
- Nuclear Physics and Applications
- Embedded Systems Design Techniques
- Radiation Detection and Scintillator Technologies
- Quantum Chromodynamics and Particle Interactions
- Simulation Techniques and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Effects and Dosimetry
- Radiation Therapy and Dosimetry
- Advancements in PLL and VCO Technologies
Brookhaven National Laboratory
2010-2024
Brookhaven College
2023
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,...
A half-cell superconducting rf electron gun is designed to provide 0.5 A, 2 MeV beam for the Brookhaven National Laboratory R Energy Recovery Linac. Total power of 1 MW must be delivered meet current and energy specifications, resulting in very strong coupling. Two opposing fundamental couplers (FPCs) are employed minimize transverse kick traversing structure halve through coupler. single-window coaxial coupler has been average coupling requirements. The features a planar beryllia window...
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 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...
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...
Brookhaven's AGS Booster has been modified to deliver slow extracted beam a new line, the NASA Space Radiation Laboratory (NSRL). This facility was constructed in collaboration with for purpose of performing radiation effect studies space program. The design resonant extraction system described. A more detailed description, which includes predictions time structure In this report we present results commissioning and performance.
An ampere class 20 MeV superconducting Energy Recovery Linac (ERL) is presently under commissioning at Brookhaven National Laboratory (BNL) [1]. This facility enables testing of concepts relevant for high-energy coherent electron cooling, electron-ion colliders, and high repetition rate FreeElectron Lasers. The ERL will be capable providing beams with sufficient quality to produce THz X-ray radiation. When completed the SRF photoinjector provide 2 energy 300 mA average beam current. injector...
High-gradient CW photo-injectors operating at high accelerating gradients promise to revolutionize many sciences and applications. They can establish the basis for super-bright monochromatic X-ray free-electron lasers, hadron beams, nuclear- waste transmutation or a new generation of microchip production. In this letter we report on our operation superconducting RF electron gun with record-high gradient CsK2Sb photocathode (i.e. ~ 20 MV/m) generating bunch charge (i.e., 3 nC). We briefly...