A5088684480- Gyrotron and Vacuum Electronics Research
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Microwave Engineering and Waveguides
- Metamaterials and Metasurfaces Applications
- Thermochemical Biomass Conversion Processes
- Atomic and Molecular Physics
- Advanced Battery Materials and Technologies
- Geomechanics and Mining Engineering
- Advancements in Battery Materials
- Laser-Plasma Interactions and Diagnostics
- Antenna Design and Analysis
- Mass Spectrometry Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Terahertz technology and applications
- Laser-induced spectroscopy and plasma
- Geothermal Energy Systems and Applications
- Supercapacitor Materials and Fabrication
- Rock Mechanics and Modeling
- Millimeter-Wave Propagation and Modeling
- Advanced Battery Technologies Research
- Photonic and Optical Devices
- Crystallography and Radiation Phenomena
- Energy Harvesting in Wireless Networks
- Pulsed Power Technology Applications
Beijing Institute of Technology
2023-2024
Northern Illinois University
2021-2024
Harbin University of Science and Technology
2024
Argonne National Laboratory
2022-2024
Hohai University
2021-2024
Xi'an University of Science and Technology
2023-2024
China Power Engineering Consulting Group (China)
2022-2023
Anhui University of Finance and Economics
2008-2023
SLAC National Accelerator Laboratory
2020-2021
Moscow Institute of Thermal Technology
2021
Sodium superionic conductor (NASICON) is a class of compounds with robust polyanionic frameworks and high thermal stability, which are regarded as prospective cathodes candidates for secondary batteries. However, NASICON typically have low discharge plateaus practical capacities in aqueous electrolytes. Here, Na 3 V 1.75 Fe 0.25 (PO 4 ) 2 F investigated cathode material the zinc/sodium While addition helps improvement structural low-cost substitution has positive impact on capacity...
An electron beam passing through a metamaterial structure is predicted to generate reversed Cherenkov radiation, an unusual and potentially very useful property. We present experimental test of this phenomenon using intense loaded waveguide. Power levels up 5 MW are observed in backward wave modes at frequency 2.40 GHz one microsecond pulsed 490 keV, 84 A 400 G magnetic field. Contrary expectations, the output power not generated mode. Instead, presence field, which required transport beam,...
We present the first demonstration of high-power, reversed-Cherenkov wakefield radiation by electron bunches passing through a metamaterial structure. The structure supports fundamental transverse magnetic mode with negative group velocity leading to radiation, which was clearly verified in experiments. Single 45 nC 65 MeV traversing generated up 25 MW 2 ns pulses at 11.4 GHz, excellent agreement theory. Two 85 appropriate temporal spacing 80 coherent superposition, highest rf power that...
The HALHF collaboration has discussed a new baseline for the project, taking into account comments from accelerator community on various aspects of original design. In particular, these concerned practicality dual-purpose linac to accelerate both colliding positron bunches and drive beams required plasma linac. addition, many other project were also considered; discussion conclusions are documented in this paper. Finally, is outlined that been optimised addresses several weaknesses design,...
This document outlines a community-driven Design Study for 10 TeV pCM Wakefield Accelerator Collider. The 2020 ESPP Report emphasized the need Advanced R\&D, and 2023 P5 calls ``delivery of an end-to-end design concept, including cost scales, with self-consistent parameters throughout." leverages recent experimental theoretical progress resulting from global R\&D program in order to deliver unified, Collider concept. Accelerators provide ultra-high accelerating gradients which enables...
Abstract Low‐temperature synthesis of polyanionic cathodes for sodium‐ion batteries is highly desirable but often plagued by prolonged reaction times and suboptimal crystallinity. To address these challenges, a novel self‐adaptive coordination field regulation (SACFR) strategy based on dynamic lock‐and‐release (DLR) mechanism introduced. Specifically, urea used as DLR carrier during synthesis, which dynamically “locks” “releases” vanadium ions controlled release, simultaneously “locking” H +...
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...
Experimental operation of a high power microwave source with metamaterial (MTM) structure is reported at levels to 2.9 MW 2.4 GHz in full 1 μs pulses. The MTM formed by waveguide that below cutoff for TM modes. loaded two axial copper plates machined complementary split ring resonators, allowing backward wave modes propagate the S-Band. A pulsed electron beam up 490 kV, 84 travels down center waveguide, midway between plates. generated Pierce gun and focused lens into solenoidal magnetic...
We present an experimental study of coherent high-power wakefield generation in a metamaterial (MTM) structure at 11.7 GHz by 65 MeV electron bunch trains the Argonne Wakefield Accelerator (AWA), following previous experiment, Stage-I AWA. Both Stage-II reported this paper, and experiment were conducted using MTM structures, which are all-metal periodic structures with period being much smaller than wavelength. Differences between two experiments include (1) length (Stage-I 8 cm 20 cm); (2)...
In this study, the rheology, fluidity, stability, and time-varying properties of cement paste with different substitute contents silica fume (SF) were investigated. The result showed that effects SF on macro-fluidity micro-rheological under water-cement ratios. addition increased yield stress plastic viscosity in range 2.61-18.44% 6.66-24.66%, respectively, reduced flow expansion 4.15-18.91%. effect gradually lost its regularity as w/c ratio increased. can effectively improve stability...
Abstract It is widely accepted that the next lepton collider beyond a Higgs factory would require center-of-mass energy of order up to 15 TeV. Since, given reasonable space and cost restrictions, conventional accelerator technology reaches its limits near this energy, high-gradient advanced acceleration concepts are attractive. Advanced novel accelerators (ANAs) leading candidates due their ability produce gradients on 1–100 GV/m, compact facilities. However, intermediate facilities (IEF)...
We present the design of a volumetric metamaterial (MTM) structure and its interaction with relativistic electron beam. This novel has promising applications in particle beam diagnostics, acceleration, microwave generation. The MTM cubic unit cell allowing structures arbitrary size to be configured as an array identical cells. allows exploration properties without having consider substrates or other supporting elements. dispersion characteristics are obtained using eigenmode simulations hfss...
Structure wakefield acceleration (SWFA) is well suited for the linear collider (LC) application due to its natural ability accelerate positrons and preserve emittance. Under SWFA roadmap, which was developed in response Snowmass 2013 recommendations, four principal technologies: drive beam, main structure, LC facility design, have been investigated. The two schemes under development are collinear accelerator (CWA), beam follow same path through a two-beam (TBA), where pass different...