A5040007437- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle physics theoretical and experimental studies
- Gyrotron and Vacuum Electronics Research
- Advanced X-ray Imaging Techniques
- Advancements in Photolithography Techniques
- Laser-Plasma Interactions and Diagnostics
- Optical Systems and Laser Technology
- Astronomical Observations and Instrumentation
- Semiconductor materials and devices
- Energetic Materials and Combustion
- Radiation Detection and Scintillator Technologies
- Pharmacological Effects and Toxicity Studies
- GaN-based semiconductor devices and materials
- Integrated Circuits and Semiconductor Failure Analysis
- Semiconductor Lasers and Optical Devices
- Nanocluster Synthesis and Applications
- Pulsed Power Technology Applications
- Photonic and Optical Devices
- Catalysis and Hydrodesulfurization Studies
- Safety and Risk Management
- graph theory and CDMA systems
- Computational Physics and Python Applications
Institute of High Energy Physics
2013-2024
Chinese Academy of Sciences
2014-2024
Northwest University
2023
Zhejiang University
2022
University of Chinese Academy of Sciences
2021
Southwest Jiaotong University
2019
Institute of Fluid Physics
2018
Chinese Academy of Engineering
2018
Mianyang Normal University
2018
College of Environmental Protection
2015
The Circular Electron Positron Collider (CEPC) is a large international scientific facility proposed by the Chinese particle physics community to explore Higgs boson and provide critical tests of underlying fundamental principles Standard Model that might reveal new physics. CEPC, be hosted in China circular underground tunnel approximately 100 km circumference, designed operate as factory producing electron-positron collisions with center-of-mass energy 240 GeV. collider will also at around...
Chiral Au nanoclusters have promising application prospects in chiral sensing, asymmetric catalysis, and chiroptics. However, enantiopure superatomic homogold clusters with crystallographic structures emitting bright circularly polarized luminescence (CPL) remain challenging. In this study, we designed N-heterocyclic carbenes (NHCs), for the first time enantioselectively synthesized a pair of monovalent cationic Au13 clusters. This new enantiomeric has quasi-C2 symmetric core exhibited CPL...
Abstract The Circular Electron Positron Collider (CEPC) is a proposed electron-positron collider to be operated at unprecedented high energy and luminosity. To reduce background noise from spent particles, movable collimator system has been devised. This study presents comprehensive design of the for CEPC, addressing challenges posed by its interaction between synchrotron radiation, was thoroughly investigated. Several aspects, including optimization radiation load, thermodynamic design,...
A novel scheme for the focusing of high-energy leptons in future linear colliders was proposed 2001 [P. Raimondi and A. Seryi, Phys. Rev. Lett. 86, 3779 (2001)]. This has many advantageous properties over previously studied schemes, including being significantly shorter a given energy having better bandwidth. Experimental results from ATF2 accelerator at KEK are presented that validate operating principle such by demonstrating demagnification 1.3 GeV electron beam down to below 65 nm height...
ATF2 is a final-focus test beam line which aims to focus the low emittance from ATF damping ring vertical size of about 37 nm and demonstrate nanometer level stability. Several advanced diagnostics feedback tools are used. In December 2008, construction installation were completed commissioning started, supported by an international team Asian, European, U.S. scientists. The present status first results described.
To enhance the accuracy of phasor estimation under dynamic conditions, fundamental power signal is expressed by a multiple frequency Taylor model (MFTM) with several sub-phasors expanded series. The MFTM employed to depict characteristic voltage/current signals. Besides, an MFTM-based synchrophasor algorithm was proposed achieve accurate conditions as per IEEE C37.118.1. First, based on series, comprised Hz away from one. Second, decoupling coefficient matrix calculated offline generated...
We have performed molecular dynamics simulations in conjunction with the multiscale shock technique (MSST) to study initial chemical processes of condensed-phase RDX under various velocities (8 km s-1, 10 s-1 and 11 s-1). A self-consistent charge density functional tight-binding (SCC-DFTB) method was used. find that N-NO2 bond dissociation is primary pathway for NO2 groups facing (group 1) shock, whereas C-N scission dominant channel away from 2) shock. In addition, our results present are...
In this paper we show a systematic method of appropriate parameter choice for circular proton–proton collider by using an analytical expression the beam–beam tune shift limit, starting from given design goal and technical limitations. A suitable space has been explored. Based on scan, sets parameters designed 50 km 100 are proposed.
In order to avoid the pretzel orbit, CEPC is proposed use partial double ring scheme in CDR. this paper, a general method of how make an consistent machine parameter design with crab-waist by using analytical expression maximum beam–beam tune shift and beamstrahlung beam lifetime started from given IP vertical beta, power other technical limitations were developed. FFS crab sextupoles will be developed arc lattice redesigned acheive lower emittance for scheme.
Circular Electron-Positron Collider(CEPC) is one of the largest plans in high energy physics study at China, which would serve as Higgs Factory firstly and then upgrade to a hadron collider.In this paper we give 50km 100km design both single ring double schemes, including Z boson W by using optimized method.Also, potential CEPC running poles.And analysis relationship luminosity with circumference filling factor, gives way evaluate choice geometry.What's more, compare nominal performance...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTSupercritical Ethanolysis of Wheat Stalk Powder over CaO/Al2O3 and CaO/Al2O3/Fe3O4†Wen-Juan Xu‡, Wei Zhao*‡, Chen Sheng‡, Shi-Teng Zhong‡, Xiao-Na Wu‡, Cai-Hui Yan‡, Sha Bai‡, Zhi-Min Zong‡, Xian-Yong Wei*‡§View Author Information‡ Key Laboratory Coal Processing Efficient Utilization (Ministry Education), China University Mining Technology, Xuzhou 221008, Jiangsu, China§ Hubei Conversion New Carbon Material Laboratory, Wuhan Science 430081,...
A future Circular Electron Positron Collider (CEPC) has been proposed by China with the main goal of studying Higgs boson. Its baseline design, chosen on basis its performance, is a double ring scheme; an alternative design partial scheme which reduces budget while maintaining adequate performance. This paper will present collider lattice for scheme. The CEPC also work as W and Z factory. For modes, except in RF region, compatible lattices were obtained scaling down magnet strength energy.
In circular colliders, as well in damping rings and synchrotron radiation light sources, beam halo is one of the critical issues limiting performance potentially causing component damage activation. It imperative to clearly understand mechanisms that lead formation test available theoretical models. Elastic beam-gas scattering can drive particles large oscillation amplitudes be a potential source halo. this paper, numerical estimation Monte Carlo simulations process at ATF KEK are presented....
In this paper, we introduce the layout and lattice design of Circular-Electron-Positron-Collider (CEPC) partial double ring scheme Super-Proton-Proton-Collider (SPPC). The baseline CEPC is a single beam-pipe electron positron collider, which has to adopt pretzel orbit it not suitable serve as high luminosity [Formula: see text] factory. If choose scheme, can get higher with lower power be discuss details show dynamic aperture study optimization. We also first version SPPC although needs lots...
In this paper we showed a systematic method of appropriate parameter choice for circular pp collider by using analytical expression beam-beam tune shift limit started from given design goal and technical limitations. Based on parameters scan, obtain set SPPC with different circumferences like 54km, 78km or 100km energies 70TeV 100TeV. We also the first version lattice although it needs lots work to do be optimized.
In this paper, a consistent calculation method for the CEPC parameter choice with crab waist scheme is reported. A crosscheck of luminosity beam–beam simulations has been done. With new scheme, higher Higgs (+[Formula: see text]170%) can be reached while keeping Pre-CDR beam power or (19 MW) reduced same luminosity. compatible W and Z experiment. The at level [Formula: text]. Requirement energy acceptance to 1.5% by enlarging ring 100 km. arc optics Final Focus System (FFS) sextupoles have...
The ATF2 project is the final focus system prototype for ILC and CLIC linear collider projects, with purpose of reaching a 37nm vertical beam size at interaction point. In nanometer regime, higher order multipoles in magnets become crucial point consideration. strength rotation angle QEA were reconstructed from IHEP measurements compared KEK ones to be identical. Based on study skew sensitivity, we report analysis possible mitigation measured multipoles. A suggestion given which will benefit...