A5101700114- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Gyrotron and Vacuum Electronics Research
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- Ferroelectric and Piezoelectric Materials
- Remote Sensing and Land Use
- Advanced X-ray and CT Imaging
- Dielectric materials and actuators
- International Science and Diplomacy
- Nuclear reactor physics and engineering
- Electron and X-Ray Spectroscopy Techniques
- Geoscience and Mining Technology
- Radiation Dose and Imaging
- Advanced MRI Techniques and Applications
- Advanced Measurement and Detection Methods
- X-ray Spectroscopy and Fluorescence Analysis
- Medical Imaging Techniques and Applications
- Advanced Data Storage Technologies
Brookhaven National Laboratory
2008-2024
Xi'an Jiaotong University
2023-2024
Southeast University
2024
GSI Helmholtz Centre for Heavy Ion Research
2021-2024
SLAC National Accelerator Laboratory
2023-2024
Stanford Synchrotron Radiation Lightsource
2024
Jiangsu University
2023
Stanford University
2023
The First People's Hospital of Guiyang
2023
Chongqing University of Technology
2022
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, tune-defined as number of precessions per turn-is given by ν(s)=γG (γ Lorentz factor, G gyromagnetic anomaly). At 970 MeV/c, deuteron spins coherently precess at a frequency ≈120 kHz in Cooler Synchrotron COSY. The deduced from up-down asymmetry deuteron-carbon scattering. time interval 2.6 s, was determined with precision order 10^{-8}, 1×10^{-10} for continuous 100 s accelerator cycle. This...
We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of magnetic storage ring (COSY). This long spin coherence time is maintained through combination bunching, electron cooling, sextupole field corrections, and suppression collective effects current limits. record required for search an intrinsic electric dipole moment on at statistical sensitivity level approaching 10^{-29} e cm.
Deep Candida albicans infection is one of the major causes death in immunosuppressed hosts. Remodeling macrophages to phenotype M1 can decrease fungus burden and facilitate combating C. under an immunosuppressive state. In this study, a nanotrinity was exploited direct fungicidal macrophage polarization by leveraging regulation pathways redifferentiation. Conventional chemotherapeutic imatinib, which abrogate M2 via "shutting off" STAT6 phosphorylation pathway, encapsulated biodegradable...
We present a proposal for cold copper distributed coupling accelerator that can provide rapid route to precision Higgs physics with compact 8 km footprint. This is based on recent advances increase the efficiency and operating gradient of normal conducting accelerator. technology also provides an $e^{+}e^{-}$ collider path at multi-TeV energies. In this article, we describe our vision near-term R&D program needed pursue it.
Dielectric capacitors are widely used in pulsed power electronic devices due to their ultrahigh densities and extremely fast charge/discharge speed. To achieve enhanced energy storage density, maximum polarization (Pmax) breakdown strength (Eb) need be improved simultaneously. However, these two key parameters inversely correlated. In this study, order–disorder transition induced polar nanoregions have been achieved PbZrO3 thin films by making use of the low-energy ion implantation, enabling...
This Letter reports the successful use of feedback from a spin polarization measurement to revolution frequency $0.97\text{ }\text{ }\mathrm{GeV}/c$ bunched and polarized deuteron beam in Cooler Synchrotron (COSY) storage ring order control both precession rate ($\ensuremath{\approx}121\text{ }\mathrm{kHz}$) phase horizontal component. Real time synchronization with radio (rf) solenoid made possible rotation out plane, yielding demonstration method manipulate polarization. In particular,...
The stable spin direction of polarized particles in a storage ring was determined first experimentally, through an accurate measurement the tune and its response to longitudinal magnetic fields.
A coherent spin resonance excited by an rf dipole was used to overcome depolarization due intrinsic resonances at the Alternating Gradient Synchrotron (AGS) Brookhaven National Laboratory. We found that our data are consistent with a full flip of polarized proton beam, without emittance growth, $G\ensuremath{\gamma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}12+{\ensuremath{\nu}}_{z}$ and $36\ensuremath{-}{\ensuremath{\nu}}_{z}$, adiabatically exciting vertical betatron oscillation...
Abstract C 3 is an opportunity to realize e + - collider for the study of Higgs boson at √ s = 250 GeV, with a well defined upgrade path 550 GeV while staying on same short facility footprint [2,3]. based fundamentally new approach normal conducting linear accelerators that achieves both high gradient and efficiency relatively low cost. Given advanced state designs, key system requires technical maturation main linac. This paper presents staged towards demonstrate technology Direct (source...
Sustained coherent betatron oscillations have been produced in the Brookhaven National Laboratory Alternating Gradient Synchrotron (AGS) using a high-frequency oscillating dipole field operating very near subharmonic of tune. The were adiabatically induced and manipulated controlled fashion so that transverse emittance particle beam was preserved. This procedure will be used to induce spin flip AGS during crossing depolarizing resonances polarized operation. It may also find applications...
Recently, resonance driving terms were successfully measured in the CERN SPS and BNL RHIC from Fourier spectrum of beam position monitor (BPM) data. Based on these measurements a new analysis has been derived to extract truly local observables BPM These are called since they share some similarities with global terms. In this paper we derive analytically present experimental sextupolar RHIC. Nondestructive using ac dipoles also presented.
C$^3$ is an opportunity to realize e$^+$e$^-$ collider for the study of Higgs boson at $\sqrt{s} = 250$ GeV, with a well defined upgrade path 550 GeV while staying on same short facility footprint. based fundamentally new approach normal conducting linear accelerators that achieves both high gradient and efficiency relatively low cost. Given advanced state designs, key system requires technical maturation main linac. This white paper presents staged towards demonstrate technology Direct...
The measurement of direct photons from Au+Au collisions at √sNN=39 and 62.4 GeV in the transverse-momentum range 0.4<pT<3Gev/c is presented by PHENIX collaboration BNLRelativistic Heavy Ion Collider. A significant direct-photon yield observed both collision systems. universal scaling when pT spectra for different center-of-mass energies centrality selections √sNN=62.4 scaled with (dNch/dη)α α=1.21±0.04. This also holds true √sNN=200 measured earlier PHENIX, as well Pb+Pb √sNN=2760 published...
The measurement of the direct-photon spectrum from $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{{s}_{{}_{NN}}}=200$ GeV is presented by PHENIX Collaboration using external-photon-conversion technique for 0%--93% central in a transverse-momentum (${p}_{T}$) range 0.8--10 $\text{GeV}/c$. An excess direct photons, above prompt-photon production hard-scattering processes, observed ${p}_{T}<6\phantom{\rule{4pt}{0ex}}\text{GeV}/c$. Nonprompt photons are measured subtracting prompt component,...