A5001381477- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Gyrotron and Vacuum Electronics Research
- Physics of Superconductivity and Magnetism
- Superconductivity in MgB2 and Alloys
- Atomic and Subatomic Physics Research
- Boron and Carbon Nanomaterials Research
- Smart Grid and Power Systems
- Thermal Expansion and Ionic Conductivity
- Advanced Condensed Matter Physics
- Power Systems and Technologies
- Magnesium Alloys: Properties and Applications
- Text and Document Classification Technologies
- Web Data Mining and Analysis
- High-Energy Particle Collisions Research
- Magnetic confinement fusion research
- Anomaly Detection Techniques and Applications
- Digital Media Forensic Detection
- Power Systems and Renewable Energy
- Industrial Vision Systems and Defect Detection
- Service-Oriented Architecture and Web Services
- Particle physics theoretical and experimental studies
- Radiation Therapy and Dosimetry
Wuhan University of Technology
2025
SAIC Motor (China)
2025
University of Chinese Academy of Sciences
2024
Chinese Academy of Sciences
2005-2017
Institute of High Energy Physics
2013-2017
National Natural Science Foundation of China
2014
National Laboratory for Superconductivity
2005
Institute of Physics
2005
An accelerator-driven subcritical system (ADS) program was launched in China 2011, which aims to design and build an ADS demonstration facility with the capability of more than 1000 MW thermal power multiple phases lasting about 20 years. The driver linac is defined be 1.5 GeV energy, 10 mA current cw operation mode. To meet extremely high reliability availability, designed much installed margin fault tolerance, including hot-spare injectors local compensation method for key element...
In recent years, with the rapid development of deep forgery technology, its verisimilitude is increasing day by day, and social impact becoming more serious. However, although a variety face video detection algorithms have been proposed shown certain capabilities on open source data sets, in increasingly sophisticated differences between genuine fake videos are gradually difficult to be captured naked eye, existing methods generally problems such as low cross-compressibility poor robustness....
This paper addresses the inefficiency of manually screening fault knowledge in Chinese vehicle repair cases and proposes a NER method based on combined model aimed at efficiently extracting automotive entities from unstructured case texts. First, data characteristics historical are analyzed, response to issues such as misuse overuse punctuation redundant text, long-text segmentation rules designed, text classification is performed using Text-CNN method. Second, address low recognition...
In this paper we will show a general method of how to make an optimized parameter design circular e+e- Higgs Factory by using analytical expression maximum beam-beam and beamstrahlung beam lifetime started from given goal technical limitations. A space has been explored. Based on parameters scan RF scan, set designs for 50 km Circular (CHF) with different frequency was 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.
The 10 MeV accelerator-driven subcritical system (ADS) Injector I test stand at Institute of High Energy Physics (IHEP) is a testing facility dedicated to demonstrate one the two injector design schemes [Injector Scheme-I, which works 325 MHz], for ADS project in China. composed parts, linac part and beam dump line. former designed on basis MHz four-vane type copper structure radio frequency quadrupole superconducting (SC) spoke cavities with $\ensuremath{\beta}=0.12$. latter transport...
The period length is usually much larger than the cavity effective in a low energy superconducting linac. long drifts between cavities will not only decrease acceptance of linac, but also lead to possible instability. linac be more sensitive mismatch and other perturbations. From longitudinal motion equation, function which describes parametric resonance deduced relation instability region filling factor discussed. It indicates that if zero current phase advance per kept below 90°, driven by...
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...
Synthesis, lattice parameter changes, grain morphology, superconductivity and specific heat of a new superconductor Nb(1-x)Mg(x)B(2) (0.0 <= x 0.40) series were reported. Magnetization resistance measurements indicate that the superconducting transition temperature T(C) with = 0.10-0.40 is similar to 5 K. A large Meissner signal result superconductors have bulk superconductivity. The Debye theta(D) determined by measurement 419(+/- 10) K for Nb(0.75)Mg(0.25)B(2).
For the injector Scheme- I test stand of China-ADS (Accelerator Driven subcritical System), a beam with maximum power 100 kW will be produced and transported to dump. To solve very high thermal load problem at dump, two measures are taken deal huge density target. One is enlarge contact area between target, this accomplished by expanding profile target using slanted plates. The other produce more homogenous minimize density. Here dump line designed meet requirement expansion homogenization 3...
In this paper, we introduced the parameter choice and first version lattice design for a 61 km 100-km Super Proton–Proton Collider (SPPC). We started beam dynamics study from last year showed preliminary dynamic aperture result of these two SPPC versions. also layout, CEPC partial double ring, an advanced ring fully schemes.
The test stand of CADS Injector Ⅰ is built at the Institute High Energy Physics(IHEP). 3.2 MeV, 10 mA beam from RFQ will be transported and matched by medium energy transport line (MEBT1) to superconductive accelerating section. To minimize loss mismatch, Twiss parameters exit should got. method scanning quadrupole strength with wire scanner used in Ⅰ. As data process, traditional based on matrix bring errors for high intensity accelerators, especially low when space charge force very...
CEPC was proposed as an electron and positron collider ring with a circumference of 50–100 km to study the Higgs boson. Since proposal made, lattice design for has been carried out preliminary conceptual report written at end 2014. In this paper, we will describe principles pretzel scheme design, which is one most important issues in design. Then, show modification based on shown Pre-CDR. The latest orbit result also be shown. remained solved present discussed brief summary given end.
To merge the beam from either of two injectors to main linac, a dog-leg system will be employed in second Medium Energy Beam Transport (MEBT2) line China ADS driving accelerator. The achromatic condition has guaranteed avoid center excursion against energy jitter. RF cavities were found indispensable control bunch length growth MEBT2. full uncoupling between transverse and longitudinal plane is desired minimize projected rms emittances. uncoupled this dogleg with presence bunching deduced...