A5101724959- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- CCD and CMOS Imaging Sensors
- Radiation Effects in Electronics
- Silicon Carbide Semiconductor Technologies
- Particle physics theoretical and experimental studies
- Electrostatic Discharge in Electronics
- Plasma Diagnostics and Applications
- Dark Matter and Cosmic Phenomena
- Radio Frequency Integrated Circuit Design
- Scheduling and Optimization Algorithms
- Particle Accelerators and Free-Electron Lasers
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Data Storage Technologies
- Carbohydrate Chemistry and Synthesis
- Muon and positron interactions and applications
- Advancements in Photolithography Techniques
- Flexible and Reconfigurable Manufacturing Systems
- Plant-derived Lignans Synthesis and Bioactivity
- Advanced Semiconductor Detectors and Materials
- Advanced Manufacturing and Logistics Optimization
- Magnolia and Illicium research
- Superconducting Materials and Applications
- Astrophysics and Cosmic Phenomena
- Photocathodes and Microchannel Plates
University of Chinese Academy of Sciences
2023-2025
Shanghai Institute of Organic Chemistry
2025
Chinese Academy of Sciences
2020-2024
Institute of High Energy Physics
2019-2024
Beijing Shijingshan Hospital
2020-2022
University of California, Santa Cruz
2016-2020
University of Science and Technology of China
2020
Rubriflordilactone B is a Schisandra bisnortriterpenoid with unique 5/5/7/6/5/5-hexacyclic framework that includes characteristic tetrasubstituted aromatic ring. Herein, we report convergent, enantioselective total synthesis of this natural product by bioinspired skeletal reorganization approach. Key transformations include chelation-controlled [2,3]-Wittig-Still rearrangement to assemble the western cyclohexenyl fragment complete diastereocontrol, Cu(II)-catalyzed tandem acyloin...
This paper reports the latest technological development on Low Gain Avalanche Detector (LGAD) and introduces a new architecture of these detectors called inverse-LGAD (iLGAD). Both approaches are based standard Photo Diodes (APD) concept, commonly used in optical X-ray detection applications, including an internal multiplication charge generated by radiation. The is inherent to basic n++–p+–p structure, where doping profile p+ layer optimized achieve high field impact ionization at junction....
The proposed Circular Electron Positron Collider (CEPC) imposes new challenges for the vertex detector in terms of high resolution, low material, fast readout and power. Monolithic Active Pixel Sensor (MAPS) technology has been chosen as one most promising candidates to satisfy these requirements. A MAPS prototype, called TaichuPix1, based on a data-driven structure, together with column drain architecture, benefiting from ALPIDE FE-I3 approaches, implemented achieve readout. This paper...
Low Gain Avalanche Detectors (LGAD) are silicon sensors with a time resolution better than 20 ps. The ATLAS and CMS experiments designing LGAD detectors to address the pile-up challenge at High Luminosity-Large Hadron Collider (HL-LHC) . Institute of Energy Physics (IHEP) High-Granularity Timing Detector group has recently developed its first version sensors. structure was designed using Technology Computer-Aided Design (TCAD) simulations optimized obtain high breakdown voltage ideal gain....
The thickness of the high-resistivity layer (activelayer) is a crucial factor affecting timing resolution oflow gain avalanche diodes (LGADs). We studied poten-tial improvement charge particlesbased on LGADs with different active thicknesses. TheInstitute High Energy Physics (IHEP) and Novel DeviceLaboratory (NDL) jointly designed two types LGAD sensorswith thicknesses 33 50μm. timingresolution given by contributions from time walk, jitter,and nonuniform deposition (Landau term). jitterand...
Abstract We present the design and performance of MUX64, a 64-to-1 analogue multiplexer ASIC for ATLAS High Granularity Timing Detector (HGTD). The MUX64 transmits one its 64 inputs selected by six address lines voltages or temperatures being monitored to an lpGBT ADC channel. prototype ASICs fabricated in TSMC 130 nm CMOS technology were prepared wire-bonding QFN88 packaging format. A total 280 chips was examined functionality quality assurance. accelerated aging test conducted at 85 °C...
Low-gain avalanche diode (LGAD) is the chosen technology for ATLAS high-granularity timing detector (HGTD). According to previous studies, acceptor removal effect due radiation and single-event burnout (SEB) at high bias voltages are still a challenge LGAD. The Institute of High Energy Physics (IHEP), Beijing, China, cooperated with Microelectronics (IME), design fabrication IHEP-IME LGAD sensors shallow carbon deep N++ layer improve hardness After neutron irradiation up <inline-formula...
This article presents a detailed investigation of the influence carbon co-implantation on radiation hardness low gain avalanche detectors (LGADs). The implantation and thermal annealing during LGAD fabrication could improve device's hardness. As an attempt to explain mechanism implanted suppress acceptor removal induced by neutron irradiation, coefficients ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...
The performances of Low Gain Avalanche diode (LGAD) sensors from a neutron irradiation campaign with fluences 0.8 x 10^15, 15 10^15 and 2.5 neq/cm2 are reported in this article. These LGAD developed by the Institute High Energy Physics, Chinese Academy Sciences Novel Device Laboratory for Granularity Timing Detector Luminosity Large Hadron Collider. timing resolution collected charge were measured electrons beta source. After fluence neq/cm2, decreases 40 fC to 7 fC, signal-to-noise ratio...
The proposed Circular Electron-Positron Collider (CEPC) presents new challenges for pixel detectors in terms of cell size and functionality. A high data rate digital design readout architecture a Monolithic Active Pixel Sensor (MAPS) prototype the CEPC vertex detector is presented. MAPS prototype, together with column drain based architecture, benefiting from ALPIDE (ALice PIxel DEtector) FE-I3 approaches, has been implemented to achieve spatial resolution, fast readout, low power...