A5101841749- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Superconducting and THz Device Technology
- Atomic and Subatomic Physics Research
- Black Holes and Theoretical Physics
- Analog and Mixed-Signal Circuit Design
- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Advancements in PLL and VCO Technologies
- Radiation Effects in Electronics
- Particle Accelerators and Free-Electron Lasers
- Photonic and Optical Devices
- CCD and CMOS Imaging Sensors
- Silicon and Solar Cell Technologies
- Optical Systems and Laser Technology
- Solidification and crystal growth phenomena
- Medical Imaging Techniques and Applications
- Spacecraft and Cryogenic Technologies
- Robotic Mechanisms and Dynamics
- Muon and positron interactions and applications
Brookhaven National Laboratory
2017-2025
Jilin University
2024-2025
Chengdu University of Traditional Chinese Medicine
2025
First Hospital of Jilin University
2024
Brookhaven College
2024
Jianghan University
2023
Campbell Collaboration
2019
University of Science and Technology of China
2012-2018
Liaoning Normal University
2012-2014
In Czochralski (CZ)-Si, crystal originated particles (COPs) and bulk micro-defects (BMDs), which are primarily composed of voids O-precipitates (OPs), respectively, have profound influences on the properties wafers and...
When an unmanned aerial vehicle (UAV) tilts to capture image of a ground target, variations in object distance may lead uneven resolution distribution, with the focal length ranging from zero full field view. The field-of-view (FFL), which is function view, characterizes optical properties system for each viewing angle. (FFL) quantifies incremental change height resulting marginal rays exiting system, infinitesimal angular at boundary. aberration manifests as effective variation that...
Abstract To investigate the forward kinematics problem of parallel mechanisms with complex limbs and to expand applicability powerful tool Conformal Geometric Algebra (CGA), a CGA-based modeling solution method for class platforms 3-RE structure after locking actuated joints is proposed in this paper. Given that angle between specific joint axes remains constant, set geometric constraints (PM) are determined. After translating unit direction vectors these common starting point, transformed...
The DAMPE (DArk Matter Particle Explorer) is a scientific satellite being developed in China, aimed at cosmic ray study, gamma astronomy, and searching for the clue of dark matter particles near future. BGO (Bismuth Germanate Oxide) Calorimeter, which consists 616 PMTs (photomultiplier tubes) 1848 dynode signals, crucial part payload measuring energy particles, distinguishing interesting from background, providing trigger information. An electronics system, 16 FEE (Front End Electronics)...
In this paper, a time-to-digital converter (TDC) based on 4 multi-phase clocks is implemented in XILINX's Virtex4 FPGA. Profit from the PLL technology we can adjust clock phase precisely. case, have 0°, 90°, 180°, 270° shift are generated. Each clock's rising edge has same delay to previous clock. Based those clocks, divide one period into parts. The bin size of TDC be proved 1/4 period. It new approach come true time interpolation within needs less logic resource than other kind TDC. Its...
Varying gravitational constant $G(t)$ (VG) cosmology is studied in this paper, where the modified Friedmann equation and energy conservation are given with respect to constant-$G$ theory. Considering extended Chaplygin gas (ECG) as background fluid (or thinking that ECG induced by variation of $G$), unified model dark matter obtained VG The parameter spaces investigated VG-ECG using recent cosmic data. Constraint results show...
The BGO calorimeter, which provides a wide measurement range of the primary cosmic ray spectrum, is key sub-detector Dark Matter Particle Explorer (DAMPE). readout electronics calorimeter consists 16 pieces Actel ProASIC Plus FLASH-based field-programmable gate array (FPGA), design-level flip-flops and embedded block random access memories (RAM) are single event upset (SEU) sensitive in harsh space environment. To comply with radiation hardness assurance (RHA), SEU mitigation methods,...
In liquid argon time projection chambers exposed to neutrino beams and running on or near surface levels, cosmic muons, other particles are incident the detectors while a single neutrino-induced event is being recorded. practice, this means that data from will be dominated by particles, both as source of triggers majority particle count in true neutrino-triggered events. work, we demonstrate novel application deep learning techniques remove these background applying full detector images SBND...
As a prototype of Deep Underground Neutrino Experiment far detector, ProtoDUNE single-phase liquid argon Time Projection Chamber will sit in H4 beam line at CERN to study detector response particles. It consists 6 full-size Anode Plane Assemblies (APAs) plus 2 Cathode (CPAs) form two 3.6m drift regions with total 15,360 readout channels. To achieve optimal noise performance, electronics developed for extremely low temperatures (77K-89K) operation has been studied an integral design concept...
The Short-Baseline Near Detector time projection chamber is unique in the design of its charge readout planes. These anode plane assemblies (APAs) have been fabricated and assembled to meet strict accuracy precision requirements: wire spacing 3 mm ± 0.5 tension 7 N 1 across 3,964 wires per APA, flatness within over 4 m × 2.5 extent each APA . This paper describes design, manufacture assembly these key detector components, with a focus on quality assurance at stage.
In liquid argon time projection chambers exposed to neutrino beams and running on or near surface levels, cosmic muons other particles are incident the detectors while a single neutrino-induced event is being recorded. practice, this means that data from will be dominated by particles, both as source of triggers majority particle count in true neutrino-triggered events. work, we demonstrate novel application deep learning techniques remove these background applying semantic segmentation full...
Abstract ColdADC is a low-noise 16-channel analog-to-digital converter ASIC designed for cold readout electronics of Liquid Argon Time Projection Chambers (LArTPCs) in the Deep Underground Neutrino Experiment (DUNE). was specifically operation at cryogenic temperatures (77 K–89 K). Cold considered to be an enabling technology liquid argon detectors neutrino experiments. The main function chip digitize signals from charge-sensitive amplifier BNL (LArASIC) and send digitized data aggregator...
The second and final version of ColdADC, called ColdADC_P2, is presented. ColdADC_P2 a 16-channel, 12-bit, 2 MS/s digitizer application-specific integrated circuit (ASIC) intended for use inside the DUNE Far Detector. contains two 16 pipelined analog-to-digital converters (ADCs) that each digitizes output eight sample-and-hold amplifiers (SHAs). Because application requires immersion in liquid argon (LAr), was developed using specialized design techniques long-term reliability...
The Dark Matter Particle Explorer (DAMPE) is being constructed as a scientific satellite to observe high energy cosmic rays in space. As main sub-detector of DAMPE, the BGO electromagnetic calorimeter provides wide measurement range deposition particles traversing detector and generates trigger information for selection module. There are 704 photomultiplier tube (PMT) dynode signals total generate sub-trigger signals, which bring difficulties design front end electronics (FEE) on...
ProtoDUNE-SP and SBND are both liquid argon (LAr) TPCs for neutrino experiments, they share many common development of cold electronics system. Cold decouples the electrode cryostat design from readout design. With front-end (FE) integrated with detector electrodes, noise is independent fiducial volume (signal cable lengths), much lower than warm electronics. mainly consists 960 FE ASICs, ADC ASICs 120 FPGAs to form Front End Mother Board (FEMB) assemblies. Each FEMB assembly made up an...
Abstract Silicon photomultiplier (SiPM) are used to collect scintillation photons in many cryogenic noble liquid detectors deployed around the world, such as DarkSide, nEXO, MEGII, ProtoDUNE and DUNE. An event burst phenomenon was observed during routine characterization on models of SiPMs operated nitrogen. These bursts consecutive pulses initiated by an intense dark photoelectron pulse with rate much lower than time-uncorrelated thermal pulse. Although these events is very low, it can...