A5088006735- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Characterization and Applications of Magnetic Nanoparticles
- Atomic and Subatomic Physics Research
- Geomagnetism and Paleomagnetism Studies
- Magnetic Field Sensors Techniques
- Particle Detector Development and Performance
- Magnetic properties of thin films
- Astrophysics and Cosmic Phenomena
- Minerals Flotation and Separation Techniques
- Nanoparticle-Based Drug Delivery
- Microfluidic and Bio-sensing Technologies
- Electrical and Bioimpedance Tomography
- Iron oxide chemistry and applications
- Scoliosis diagnosis and treatment
- Pelvic and Acetabular Injuries
- Cosmology and Gravitation Theories
- Ultrasound and Hyperthermia Applications
- Radiomics and Machine Learning in Medical Imaging
- Spinal Fractures and Fixation Techniques
Shanghai Jiao Tong University
2015-2025
Ministry of Industry and Information Technology
2023-2024
Beihang University
2022-2024
Shandong Institute of Automation
2023-2024
Chinese Academy of Sciences
2024
We report the WIMP dark matter search results using first physics-run data of PandaX-II 500 kg liquid xenon dual-phase time-projection chamber, operating at China JinPing Underground Laboratory. No candidate is identified above background. In combination with set during commissioning run, a total exposure 3.3$\times10^4$ kg-day,the most stringent limit to spin-independent interaction between ordinary and for range mass 3.5 1000 GeV/c$^2$. The best upper on scattering cross section found...
New constraints are presented on the spin-dependent weakly-interacting-massive-particle– (WIMP-)nucleon interaction from PandaX-II experiment, using a data set corresponding to total exposure of 3.3×104 kg day. Assuming standard axial-vector WIMP with Xe129 and Xe131 nuclei, most stringent upper limits WIMP-neutron cross sections for WIMPs masses above 10 GeV/c2 in all dark matter direct detection experiments. The minimum limit 4.1×10−41 cm2 at 90% confidence level is obtained mass 40...
We report new searches for solar axions and galactic axionlike dark matter particles, using the first low-background data from PandaX-II experiment at China Jinping Underground Laboratory, corresponding to a total exposure of about 2.7×104 kg day. No axion or particle candidate has been identified. The upper limit on axion-electron coupling (gAe) flux is found be 4.35×10−12 in mass range 10−5 1 keV/c2 with 90% confidence level, similar recent LUX result. also best Fe57 deexcitation. On other...
We present the results of a search for weakly interacting massive particles (WIMPs) from commissioning run PandaX-II experiment located at China Jinping Underground Laboratory. A WIMP data set with an exposure $306\ifmmode\times\else\texttimes\fi{}19.1\text{ }\text{ }\mathrm{kg}\text{\ensuremath{-}}\text{day}$ was taken, while its dominant $^{85}\mathrm{Kr}$ background used as electron recoil calibration. No candidates are identified, and 90% upper limit is on spin-independent elastic...
We report the results of a weakly interacting massive particle (WIMP) dark matter search using full 80.1 live-day exposure first stage PandaX experiment (PandaX-I) located in China Jin-Ping Underground Laboratory. The PandaX-I detector has been optimized for detecting low-mass WIMPs, achieving photon detection efficiency 9.6%. With fiducial liquid xenon target mass 54.0 kg, no significant excess events were found above expected background. A profile likelihood ratio analysis confirms our...
Abstract Radar echo data, a refined representation of detected targets, is gaining attention in electronic warfare, marine environment monitoring, and agriculture intelligence for land cover recognition. In contrast to prevailing studies involving two‐dimensional images such as synthetic aperture radar (SAR) or inverse SAR (ISAR) images, one‐dimensional High‐Resolution Range Profile (HRRP) data offers advantages easy access simple processing. Nonetheless, its potential application has yet be...
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Objective:</i> Open-sided field-free line magnetic particle imaging (OS FFL MPI) is a novel medical system configuration that has received significant attention in recent years. However, the measurement-based matrix (SM) image reconstruction for OS MPI typically requires multiple angle calibration (MAC), which time-consuming practice. xmlns:xlink="http://www.w3.org/1999/xlink">Methods:</i> To...
Magnetic Particle Imaging (MPI)-guided Fluid Hyperthermia (MFH) has the potential for widespread utilization, as it allows prediction of magnetothermal dosage, real-time visualization thermal therapy process, and precise localization lesion area. However, existing MPI-guided MFH (MPI-MFH) method is insensitive to concentration gradients magnetic nanoparticles (MNPs) susceptible causing damage normal tissues with high MNP concentrations during treatment, while inadequately heating tumor lower...
PandaX-II experiment is a dark matter direct detection using about half-ton of liquid xenon as the sensitive target. The electrical pulses detected by photomultiplier tubes from scintillation photons are recorded waveform digitizers. data acquisition relies on trigger system that generates common signals for all Previously an analog device-based was used system. In this paper we present new FPGA-based design and algorithms described. performance real presented.
We describe the electronics and data acquisition system used in first phase of PandaX experiment—a 120 kg dual-phase liquid xenon dark matter direct detection experiment China Jin-Ping Underground Laboratory. This utilized 180 channels commercial flash ADC waveform digitizers. During entire experimental run, has achieved low trigger threshold (<1 keV electron-equivalent energy) deadtime acquisition.
Magnetic particle imaging (MPI) is an emerging molecular technique that relies on the nonlinear magnetization response of superparamagnetic iron oxide nanoparticles. Open-sided MPI (OS-MPI) has attracted considerable interest for its potential to enhance interventional procedures. However, improving spatial resolution OS-MPI poses a significant challenge, mainly due inefficiencies selection coils in generating, rotating, and shifting high-gradient field-free line (FFL). To address this...
Open-sided magnetic particle imaging (OS-MPI) has garnered significant interest due to its potential for interventional applications. However, the system matrix calibration in OS-MPI using sequential scans is a time-consuming task and susceptible low signal-to-noise ratio (SNR) resulting from small sample size. These challenges have hindered practical implementation of matrix-based reconstruction sequentially scanned OS-MPI. To address these issues, we propose novel method, named scan-based...
Multi-color Magnetic Particle Imaging (MPI) technology offers high sensitivity and non-invasive imaging capabilities. It can simultaneously image multiple superparamagnetic iron oxide nanoparticles (SPIOs), facilitating more precise detection of molecular markers in vivo. However, the fixed drive frequency existing hand-held MPI devices makes it difficult to fully match nonlinear magnetic response different SPIOs, affecting spatial resolution quantitative accuracy multi-color imaging.