A5047456728- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Neutrino Physics Research
- Radiation Dose and Imaging
- High-Energy Particle Collisions Research
- Advanced X-ray and CT Imaging
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Medical Imaging Techniques and Applications
- Numerical methods for differential equations
- Advanced Frequency and Time Standards
- Advanced Computational Techniques and Applications
- Sensor Technology and Measurement Systems
- Advanced Fiber Laser Technologies
- Magnetic confinement fusion research
- Advanced MEMS and NEMS Technologies
- Advanced Semiconductor Detectors and Materials
- Advanced Electrical Measurement Techniques
- CCD and CMOS Imaging Sensors
- Advanced Algorithms and Applications
- Acoustic Wave Resonator Technologies
- Radiation Detection and Scintillator Technologies
- Advanced Sensor and Control Systems
Institute of High Energy Physics
2023-2024
United Imaging Healthcare (China)
2024
Tsinghua University
2016-2018
Sichuan University
2014
Xidian University
2008
China Electronics Technology Group Corporation
2006
Academia Sinica
1992
We show that, under Dubrovin's notion of ''almost'' duality, the Frobenius manifold structure on orbit spaces extended affine Weyl groups type $\mathrm{ADE}$ is dual, for suitable choices weight markings, to equivariant quantum cohomology minimal resolution du Val singularity same Dynkin type. also provide a uniform Lie-theoretic construction Landau-Ginzburg mirrors resolutions. The mirror B-model described by one-dimensional LG superpotential associated spectral curve...
We report results of a search for light weakly interacting massive particle (WIMP) dark matter from the CDEX-1 experiment at China Jinping Underground Laboratory (CJPL). Constraints on WIMP-nucleon spin-independent (SI) and spin-dependent (SD) couplings are derived with physics threshold 160 eVee, an exposure 737.1 kg-days. The SI SD limits extend lower reach WIMPs to 2 GeV improve over our earlier bounds WIMP mass less than 6 GeV.
A 994 g mass p-type PCGe detector has been deployed during the first phase of China Dark matter EXperiment, aiming at direct searches for light weakly interacting massive particles. Measuring thickness dead layer a germanium is an issue major importance since it determines fiducial detector. This work reports method using uncollimated 133Ba source to determine thickness. The experimental design, data analysis and Monte Carlo simulation processes, as well statistical systematic uncertainties...
In the precise phase difference measurement, we developed dual coincidence detection method combined with a common oscillator. There is certain frequency between oscillator and two standard signals which have same nominal frequency. Utilizing suitable processing, time interval information can be obtained, without one cycle count error. The key technique circuit, measurement resolution of circuit always finite. For example, this kind stable reliable only nanosecond level. It hard to realize...
Photon-counting CT (PCCT) has the potential to provide superior spectral separation and improve material decomposition accuracy. However, PCDs face challenges of pixel-level inhomogeneity instability, necessitating frequent calibration specialized processing adaptive different responses. In this work, we introduce a generalized supervised training method for harmonization in PCCT. A multi-layer perceptron (MLP) network is trained achieve regardless individual PCD pixel responses, resulting...
Recent years the technique level of OCXOs are enhanced and production application quantities also increase obviously in China. Because request for higher specifications, lower cost, more quantity to OCXOs, many technologies have be developed suit market. This paper introduces main development China including results research by factories, institutes universities. becomes industrialized from conventional laboratory production. Some measurement techniques, aging equipment, test systems...
Abstract
We have researched, developed and applied a series of measuring testing technologies in the mass production exploitation precision frequency control devices including OCXO, TCXO, VCXO, PLL clock modules. They shown key function to performance improvement quality guarantee products. In this paper we shall present turn point regulation technology equipment dynamic storage crystal oscillators, aging techniques test technique phase noise, measurement stability production, reliability technology....