A5051522093- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Photocathodes and Microchannel Plates
- Diamond and Carbon-based Materials Research
- Gyrotron and Vacuum Electronics Research
- Semiconductor materials and devices
- Electron and X-Ray Spectroscopy Techniques
- High-Energy Particle Collisions Research
- Laser Design and Applications
- Plasma Diagnostics and Applications
- Laser-Plasma Interactions and Diagnostics
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Electronic and Structural Properties of Oxides
- Advanced Materials Characterization Techniques
- Magnetic confinement fusion research
- Advanced Data Storage Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- Catalytic Processes in Materials Science
- Non-Destructive Testing Techniques
- Auditing, Earnings Management, Governance
- Network Security and Intrusion Detection
- Pulsed Power Technology Applications
- Advanced X-ray Imaging Techniques
Chinese Academy of Medical Sciences & Peking Union Medical College
2020-2025
Peking Union Medical College Hospital
2020-2025
Qingdao University
2024
Hangzhou Normal University
2024
Zhejiang Normal University
2024
Whitney Museum of American Art
2022
Brookhaven National Laboratory
2000-2013
RIKEN BNL Research Center
2002-2007
National Library of Luxembourg
2007
Tech-X Corporation (United States)
2007
This report is based on a ten-week program Gluons and the quark sea at high-energies, which took place Institute for Nuclear Theory (INT) in Seattle Fall 2010. The principal aim of was to develop sharpen science case an Electron-Ion Collider (EIC), facility that will be able collide electrons positrons with polarized protons light heavy nuclei high energies, offering unprecedented possibilities in-depth studies quantum chromodynamics (QCD). organized around following four major themes: (i)...
Abstract In laser-driven plasma wakefield acceleration, laser pump depletion and electron dephasing are the major constraints of energy gain. Hybrid laser-plasma which uses laser-accelerated beam to drive a beam-driven in separated stages, has been proposed increase brightness. However, overall gain hybrid acceleration is even lower than single-stage acceleration. this paper, we report observation boosting effect single uniform plasmas through series particle-in-cell simulations. The...
In the rapidly evolving landscape of image generation, Latent Diffusion Models (LDMs) have emerged as powerful tools, enabling creation highly realistic images. However, this advancement raises significant concerns regarding copyright infringement and potential misuse generated content. Current watermarking techniques employed in LDMs often embed constant signals to images that compromise their stealthiness, making them vulnerable detection by malicious attackers. paper, we introduce...
Ultrasound (US) is the preferred imaging modality for preoperative localization of primary hyperparathyroidism (PHPT). Parathyroid adenomas may be confused with normal lymph nodes on conventional US. This study aimed to explore usefulness microvascular flow (MVFI) in differentiating parathyroid from and compare it color Doppler (CDFI). A total 34 that appeared peripherally hypoechoic internally hyperechoic mimicking were identified patients PHPT, cervical level III healthy controls selected...
In recent years, the problem of cyber–physical systems’ remote state estimations under eavesdropping attacks have been a source concern. Aiming at existence eavesdroppers in multi-system CPSs, optimal attack energy allocation based on SINR (signal-to-noise ratio) estimation is studied. Assume that there are N sensors, and these sensors use shared wireless communication channel to send their measurements estimator. Due limited power, can only M channels out most. Our goal Markov decision...
A promising new concept of a diamond-amplified photocathode for generation high-current, high-brightness, and low thermal emittance electron beams was recently proposed is currently under active development. Detailed understanding physical processes with multiple energy time scales required to design reliable efficient diamond-amplifier cathodes. We have implemented models, within the VORPAL computational framework, simulate secondary charge transport in diamond order facilitate...
The emittance of a high-brightness electron beam from photoinjector is affected by the transverse and longitudinal distributions laser illuminating cathode. A nonuniform generates electron-beam distribution that experiences growth on time scale plasma period. Experiments were performed at Brookhaven Accelerator Test Facility to investigate due transversely beams. Laser masks fabricated generate various distributions. Significant was observed as deviated strongly uniform distribution. For...
We report progress on the R&D program for electron-cooling of Relativistic Heavy Ion Collider (RHIC). This electron cooler is designed to cool 100 GeV/nucleon at storage energy using 54 MeV electrons. The source will be a superconducting RF photocathode gun. accelerator recovery linac. frequency set 703.75 MHz. maximum bunch 9.38 MHz, with charge 20 nC. has following components: photoinjector and its photocathode, linac cavity, start-to-end beam dynamics magnetized electrons, cooling...
Next generation light-sources, electron coolers, high-power FELs, Compton X-ray sources and many other accelerators were made possible by the emerging technology of high-power, high-brightness beams. In order to get anticipated performance level ampere-class currents, technological barriers are yet be broken. BNL's Collider-Accelerator Department is pursuing some these technologies for its cooling RHIC application, as well a future electron-hadron collider. We will describe work on CW,...
We present the design and parameters of an energy recovery linac (ERL) facility, which is under construction in Collider-Accelerator Department at BNL. This R&D facility has goal demonstrating CW operation ERL with average beam current range 0.1 - 1 ampere very high efficiency recovery. The possibility a future upgrade to two-pass also being considered. heart 5-cell 703.75 MHz super-conducting RF strong Higher Order Mode (HOM) damping. flexible lattice provides test-bed for exploring issues...
An energy recovery linac (ERL), under development at Brookhaven National Laboratory [1,2], will push ERLs further towards high current and brightness beams. This R&D ERL operate in two modes: a mode charge mode. In this paper we present lattice of the machine PARMELA simulations from cathode to beam dump. We discuss design considerations main parameters for various modes operation.
The Relativistic Heavy Ion Collider (RHIC) contributes fundamental advances to nuclear physics by colliding a wide range of ions. A novel electron cooling section, which is key component the proposed luminosity upgrade for RHIC, requires acceleration high-charge bunches with low emittance and energy spread. promising candidate source recently developed concept high quantum efficiency photoinjector diamond amplifier. We have started implement algorithms, within VORPAL particle-in-cell...
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.
The future electron-ion collider (eRHIC) at Brookhaven National Laboratory demands a high-current, polarized, bunched electron beam [http://www.bnl.gov/cad/eRhic]. One of the challenges here is to combine beams generated by multiple cathodes so address issue designing and prototyping combiner with high-frequency (700 kHz) rotational magnetic fields. This article presents its design, simulation, details some test results from this unprecedented device.
We report on recent progress toward development of secondary emission “amplifiers” for photocathodes. Secondary gain over 300 has been achieved in transmission mode and a variety diamond samples. Techniques sample preparation, including hydrogenation to achieve negative electron affinity (NEA), have adapted this application.