A5100364714- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Advancements in PLL and VCO Technologies
- Analog and Mixed-Signal Circuit Design
- Particle physics theoretical and experimental studies
- CCD and CMOS Imaging Sensors
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Neutrino Physics Research
- Particle accelerators and beam dynamics
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Radio Frequency Integrated Circuit Design
- Atomic and Subatomic Physics Research
- Magnetic confinement fusion research
- Distributed and Parallel Computing Systems
- Advanced Electrical Measurement Techniques
- Photonic and Optical Devices
- Medical Imaging Techniques and Applications
- VLSI and Analog Circuit Testing
- Pulsars and Gravitational Waves Research
- Nuclear Physics and Applications
- Low-power high-performance VLSI design
University of Science and Technology of China
2016-2025
Hebei Normal University
2020-2025
Hangzhou Medical College
2024-2025
Zhejiang Provincial People's Hospital
2024-2025
Shandong Tumor Hospital
2024
Shandong First Medical University
2024
China University of Petroleum, Beijing
2024
Chongqing Normal University
2024
North China University of Science and Technology
2024
Qingdao Institute of Marine Geology
2024
Abstract PICOSEC Micromegas (MM) is a precise timing gaseous detector based on Cherenkov radiator coupled with semi-transparent photocathode and an MM amplifying structure. The concept was successfully demonstrated through single-channel prototype, achieving sub-25 ps time resolution Minimum Ionizing Particles (MIPs). A series of studies followed, aimed at developing robust, large-area, scalable detectors high resolution, complemented by specialized fast-response readout electronics. This...
We present a theoretical analysis of the characteristics multitime averaging TDC and an improved implementation scheme that is adapted to our previous version FPGA TDCs from Xilinx Virtex 4 family without any modifications hardware. Using MATLAB we simulate timing performance on variety times. The simulation results are verified with bench-top tests. Based agreement between tests, offer guidelines for optimizing performance. With times achieve typical 9 ps RMS 12 effective bin size. Without 25 50 per
We present the implementation of a high-resolution Time-to-Digital Converter (TDC) in Field Programmable Gate Array (FPGA) from Xilinx Virtex-5 family. The design TDC is based on counter and interpolator method. Dedicated carry-in lines CARRY4 blocks FPGA are utilized for time interpolation, which realizes fine measurement within system clock period. Simulation results show that delay CIN to COUT block as large 104 ps. Thus we subdivide cell into finer taps higher resolution. Considering...
Lithology identification is crucial for understanding the characteristics of reservoirs, optimizing development plans, and enhancing efficiency. For shale oil formations, mineral composition complex lithological combinations are diverse, which imposes limitations on conventional well logging interpretation lithology identification.LithoScanner Logging a method quantifying content; however, discrepancies persist between logging-derived content core experimental results in actual exploration...
<title>Abstract</title> Attention-Deficit/Hyperactivity Disorder (ADHD) and Developmental Coordination (DCD) are two prevalent neurodevelopmental disorders occur with a comorbidity rate of up to 50%. Both the conditions associated significant motor skill deficits. The existed interventions often emphasize outcomes learning while process is overlooked underlining inconsistent results. This study evaluated effectiveness 12-week Enhanced Multi-Task Sensorimotor Intervention (MTSI) in improving...
<title>Abstract</title> <bold>Objective：</bold>To explore the effect of PAX1 and JAM3 gene methylation on pathological upgrading before conization. <bold>Methods：</bold>A total 549 patients who underwent colposcopy at our hospital were enrolled for analysis from December 2020 to April 2022. results in preoperative cervical exfoliated cells collected. Univariate multivariate logistic regression conducted identify independent risk factors influencing conization, aiming establish a prediction...
In the Cooling storage ring External-target Experiment (CEE) in heavy ion research facility Lanzhou (HIRFL), multigap resistive plate chambers (MRPCs) detectors are used for high-precision time-of-flight (TOF) measurement to identify scattered particles after beam hits target. Regarding external TOF (eTOF) and 2/3 internal (iTOF) detectors, a ~25-ps rms time precision is required readout electronics, whereas other 1/3 iTOF ~10-ps required. A electronics prototype was designed, including...
Abstract Pain caused by lumbar disc herniation (LDH) severely compromises patients’ quality of life. The combination steroid and local anesthetics is routinely employed in clinics to alleviate LDH‐induced pain. However, the approach only mediates transient efficacy requires repeated invasive epidural injections. Here a paravertebrally‐injected multifunctional hydrogel that can efficiently co‐load controlled release glucocorticoid betamethasone ropivacaine for sustained anti‐inflammation,...
Abstract The Cooling Storage Ring (CSR) External-target Experiment (CEE) is the first multi-purpose nuclear physics experimental device to operate in GeV energy range at Heavy-Ion Research Facility (HIRFL-CSR) Lanzhou, China.The primary goals of CEE are study bulk properties dense matter and understand quantum chromo-dynamic (QCD) phase diagram by measuring charged particles produced heavy-ion collisions target region with large acceptance. An inner time flight (iTOF) system has been...
Abstract A trigger system has been designed and implemented for the external-target experiment (CEE), which is under construction at heavy ion facility in Lanzhou, cooling storage ring (HIRFL-CSR). The aims studying high-density nuclear matter properties with collisions GeV energy regime. adopts a master-slave structure serial data transmission mode using optical fiber to deal multi subdetectors long-distance signal flow. logic, based on field programmable gate array (FPGA) technologies, can...
The time-of-flight (TOF) mass spectrometry is one of the most widely used techniques to get information about composition and structure compounds. time digitizer, based on time-to-digital conversion, important parts in modern TOF spectrometry, which often implemented with analog circuitry or application-specific-integrated-circuit (ASIC) devices. However, it difficult achieve a high density approach. Furthermore, ASIC requires long design cycle function cannot be easily revised for different...
Abstract The Cooling Storage Ring (CSR) External-target Experiment (CEE) will be the first large-scale nuclear physics experimental device at CSR of Heavy-Ion Research Facility in Lanzhou (HIRFL) China. A new T0 detector has been proposed to measure multiplicity, angular distribution and timing information charged particles produced heavy-ion collisions target region. Multi-gap resistive plate chamber (MRPC) technology was chosen as part construction detector, which provides precision event...
This brief presents a digital background calibration technique for timing skew in time-interleaved (TI) analog-to-digital converters (ADCs). It updates the step adaptively based on detection error. results large update initially, and it reduces with cycle going on. More than two times convergence time is saved compared conventional fixed method. Besides, by extending compensation to second-order, both range accuracy are improved. To demonstrate effectiveness of proposed calibration,...
Abstract A heavy-ion collision facility called the cooler storage ring (CSR) external-target experiment (CEE) is scheduled in Lanzhou, China. The time measurement of charged particles at forward angle will be conducted by external time-of-flight (eTOF) subsystem, which built with multigap resistive plate chambers (MRPC). This work describes tasks, performance criteria, detector layout, and prototype test results while outlining technical design development status CEE-eTOF wall. effectiveness...
A stepped-up tree encoder (SUTE) has been designed to deal with the issue of non-thermometer-to-binary (NTH2B) encoding for a 10-ps wave union FPGA TDC. The is made up two pipeline stages: pre-encoding and parallel encoding, capable bubble error correction (BEC) as well. With this algorithm applied in Xilinx Virtex-4 FPGA, we achieved NTH2B conversion rate 100 MHz more than 200-bit non-thermometer codes.
A high precision, low dead time, large dynamic range time-to-digital (TDC) architecture, suited to be implemented in Actel flash-based and anti-fuse FPGAs, is presented this paper. prototype board has been designed with such a TDC three different industrial grade FPGAs: an FPGA AX500, FPGAs APA600 A3PE1500. Test results showed that time resolution of 225 ps RMS 758 averaged bin size was obtained for APA600, while 127 427 For 37 75 obtained. Thermal tests suggested the TDCs operate well...
The time-to-digital converter(TDC) is an equipment which aims to measure the accurate time of edges input signal. Our work present I/O Tile based multi-phase clock TDC, implemented in Field-Programmable-Gate-Array(FPGA). A hit signal sampled by 8 equidistant phase-shifted clocks Tile. differential standard connecting buffered buffer and split into two complementary outputs before feeding adjacent ISERDESes. ISERDESes are configured as oversample mode, used capture 2 phase DDR data. One...
The LHAASO (Large High Altitude Air Shower Observatory) experiment is proposed for a very high energy gamma ray source survey, in which the WCDA (Water Cherenkov Detector Array) one of major components. In WCDA, total 3600 PMTs are placed under water four ponds, each with size 150 m×150 m. Precise time and charge measurement required PMT signals, over large signal amplitude range from single P.E. (photo electron) to 4000 To fulfill requirement so many front end nodes scattered area, special...
Small animal Positron Emission Tomography (PET) is dedicated to small imaging, which requires high position and energy precision, as well good flexibility efficiency of the electronics. This paper presents design a digital signal processing logic for marmoset brain PET system based on LYSO crystal arrays, SiPMs, resistive network readout method. We implement 32-channel in single Xilinx Artix-7 Field-Programmable Gate Array (FPGA). The designed support four online modes are regular data mode,...
Ti 3+ self-doped BaTiO 3 has been successfully developed as a multifunctional sensor, demonstrating outstanding performance in detecting light intensity, force, and temperature.