A5101724836- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Advanced Measurement and Metrology Techniques
- Advanced X-ray Imaging Techniques
- Power Systems and Technologies
- Advanced Measurement and Detection Methods
- Gyrotron and Vacuum Electronics Research
- Statistical and numerical algorithms
- Geodetic Measurements and Engineering Structures
- Advanced Computational Techniques and Applications
- Inertial Sensor and Navigation
- Cyclone Separators and Fluid Dynamics
- Advanced Sensor and Control Systems
- Geophysics and Gravity Measurements
- Philippine History and Culture
- Iterative Learning Control Systems
- Particle Detector Development and Performance
- Tactile and Sensory Interactions
- Visual Attention and Saliency Detection
- Mass Spectrometry Techniques and Applications
- Image Processing and 3D Reconstruction
- Optical measurement and interference techniques
- Scientific Measurement and Uncertainty Evaluation
- Image and Object Detection Techniques
National Synchrotron Radiation Laboratory
2000-2025
University of Science and Technology of China
2006-2025
Beijing Information Science & Technology University
2023
Nanjing University of the Arts
2010
PLA Army Service Academy
2009
Abstract To meet the needs of Hefei Advanced Light Facility project and reasonably use close-range photogrammetric system in future alignment work. The research on method accuracy Aicon DPA photogrammetry for geometric element measurement was carried out. Using external consistency internal as evaluation indexes, systems are designed built with laser interferometer (XL80), tracker (AT 960), standard tetrahedral marble guide to test point coordinates, distance, flatness repeatability...
Abstract With advancements in science and technology, more countries are investing fourth-generation light sources. The scale of these sources continues to expand, the requirements for alignment accuracy also higher. increasing particle accelerators accuracy, optimal design tunnel control networks has become a core research issue. This study focuses on 480-meter storage ring Hefei Advanced Light Facility (HALF). We systematically analyze impact laser tracker measurement distance network...
To enhance the pre-alignment accuracy of Hefei advanced light facility as a fourth-generation low-energy synchrotron radiation device, four-station laser tracker multilateration measurement system (FLTMMS) has been constructed, which can reduce beam energy loss. ensure FLTMMS possesses excellent performance, we have adopted geometric relationships and incident angles to reflective target spheres core design principles. By applying these principles, established an accurate model for loss...
Abstract To ensure the long-term stability of beam and further construction needs, it is necessary to re-measure particle accelerator regularly. Since 2013, we have been measuring HLS-II control network with laser trackers level for 10 years. Taking as object study, introduced data acquisition strategy period 2013–2023. We analyzed horizontal vertical deformation trends each point. In direction, fused geometric elevation tracker by using MC-GMM (a Gauss-Markov model which considers...
Abstract In order to improve the solution quality of 3D coordinate transformation parameters, a robust optimization model is obtained by integrating within overall framework genetic algorithm in this paper. The minimum weighted sum squares point residuals common points taken as objective function for optimization, and parallel search started from initial population, updating process set used generate new better individuals, adaptive weight combination corresponding optimum fitness at end...
In order to improve the quality and stability of synchrotron light, Hefei Light Source has a major upgrade.Higher accuracy is necessary for installation alignment storage ring magnets.It not necessarily essential that magnets are positioned exactly.In fact, aim adjust neighboring with high one another; in other words, these on smoothing curve.The paper presents an attempt develop reliable method based curve fitting least squares iteration according structure characteristics HLSⅡ.The...
Abstract When the important components of particle accelerator are installed, it is required to locate instrument in global coordinate system by measuring control points surrounding tunnels, which involves datumn transformation between and station system, selection model has gradually become a potential breakthrough solving problem. Four different models euler angle, Rodrigues matrix, dual quaternion twelve parameters used analyze compare solution parameters, accuracy index, iteration...
Abstract In recent years, the 4th generation synchrotron radiation light sources have gradually emerged. However, accumulated errors in Laser Tracker multi-station measurements make it challenging to meet accuracy requirements for control network measurement, especially direction of elevation. To address this issue, paper proposes utilize Hydrostatic Leveling System (HLS) provide high-precision external constraints measurement. Firstly, based on measurement principle capacitive HLS sensor, a...
Abstract Salient object detection via deep neural networks usually needs a large amount of images with human annotation. To avoid laborious and consuming annotation, we propose robust unsupervised salient method three stages in this work. Our first uses unlabeled data to generate an activation map which indicates the coarse location object. Then one scribble generation based on is proposed, provides foreground background high confidence. Finally, model trained supervision generated scribble....