A5100360660- Radio Astronomy Observations and Technology
- Superconducting and THz Device Technology
- Magnetic confinement fusion research
- Cosmology and Gravitation Theories
- Plasma Diagnostics and Applications
- Ionosphere and magnetosphere dynamics
- Pulsars and Gravitational Waves Research
- Galaxies: Formation, Evolution, Phenomena
- Laser-Plasma Interactions and Diagnostics
- Advanced Measurement and Metrology Techniques
- Time Series Analysis and Forecasting
- Astrophysics and Star Formation Studies
- Soil Moisture and Remote Sensing
- High-Energy Particle Collisions Research
- Advanced Numerical Analysis Techniques
- Microwave Engineering and Waveguides
- Laser Design and Applications
- 3D Shape Modeling and Analysis
- Scientific Research and Discoveries
- Astrophysics and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Sunflower and Safflower Cultivation
- Solar and Space Plasma Dynamics
- Micro and Nano Robotics
- Antenna Design and Optimization
Sichuan University
2025
Huazhong University of Science and Technology
2021-2024
Princeton University
2020-2024
Kent State University
2024
Hebei University of Technology
2022
California University of Pennsylvania
2020-2022
Yale University
2022
Forschungszentrum Jülich
2018
Surrogate models are critical for accelerating computationally expensive simulations in science and engineering, particularly solving parametric partial differential equations (PDEs). Key challenges developing practical surrogate include managing high-dimensional inputs outputs handling geometrically complex variable domains, which often represented as point clouds. In this work, we systematically investigate the formulation of neural operators on clouds introduce Point Cloud Neural Operator...
The Simons Observatory (SO) experiment is a cosmic microwave background (CMB) located in the Atacama Desert, Chile. SO' s small aperture telescopes (SATs) consist of three designed for precise CMB polarimetry at large angular scales. Each SAT uses cryogenic rotating half-wave plate (HWP) as polarization modulator to mitigate atmospheric 1/f noise and other systematics. To realize efficient modulation over observation bands, we fabricated an achromatic HWP (AHWP) consisting sapphire plates...
We explore the quantum chromodynamics (QCD) phase diagram's complexities, including quark deconfinement transitions, liquid-gas changes, and critical points by using chiral mean-field (CMF) model that is able to capture all these features. introduce a vector meson field redefinition within CMF framework, enabling precise adjustments of masses coupling strengths related interactions. Performing new fit potential, we are replicate recent lattice QCD results, low-energy nuclear physics...
Abstract The J-TEXT three-wave polarimeter-interferometer system (POLARIS), which measures time-space distribution of electron density and current density, has been optimized with both the optical equilibrium reconstruction method. phase resolution a Faraday rotation angle improved from 0.1 to 0.06 degree in chords –0.18 0.18 m (plasma minor radius), sawtooth oscillation behavior detected by measurement. By combining POLARIS measured data fitting code (EFIT), an upgraded method developed,...
The Simons Observatory (SO) is a suite of instruments sensitive to temperature and polarization the cosmic microwave background (CMB) be located at Cerro Toco in Atacama Desert Chile. Five telescopes, one large aperture telescope four small will host roughly 70,000 highly multiplexed transition edge sensor (TES) detectors operated 100 mK. Each SO focal plane module (UFM) couples 1,764 TESes resonators multiplexing (uMux) readout circuit. Before detector integration, mK uMux components are...
The Simons Observatory (SO) will observe the cosmic microwave background (CMB) from Cerro Toco in Atacama Desert of Chile. observatory consists three 0.5m Small Aperture Telescopes (SATs) and one 6m Large Telescope (LAT), covering six frequency bands centering around 30, 40, 90, 150, 230, 280 GHz. SO observations transform our understanding universe by characterizing properties early universe, measuring number relativistic species mass neutrinos, improving galaxy evolution, constraining...
The Simons Observatory (SO) is a suite of telescopes located in the Atacama Desert Chile that will make sensitive measurements cosmic microwave background. There are host cosmological and astrophysical questions SO forecasted to address. universal focal-plane modules (UFMs) populate four telescope receiver focal planes. three varieties UFMs, each which contains transition-edge-sensor bolometers observing two spectral bands between 30 290~GHz. We describe novel mid-frequency target six at 90...
The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment located in the Atacama Desert Chile at an elevation of 5200 meters, nominally consisting array three 0.42-meter small aperture telescopes (SATs) and one 6-meter large telescope (LAT). SO will make accurate measurements CMB temperature polarization spanning six frequency bands ranging from 27 to 280 GHz, fielding total $\sim$68,000 detectors covering angular scales between arcminute tens degrees. In this...
We explore the Quantum Chromodynamics (QCD) phase diagram's complexities, including quark deconfinement transitions, liquid-gas changes, and critical points, using chiral mean-field (CMF) model that is able to capture all these features. introduce a vector meson renormalization within CMF framework, enabling precise adjustments of masses coupling strengths related interactions. Performing new fit potential, we are replicate recent lattice QCD results, low energy nuclear physics properties,...
The Advanced Atacama Cosmology Telescope Polarimeter (AdvACT) \cite{thornton} is an upgrade for the using Transition Edge Sensor (TES) detector arrays to measure cosmic microwave background (CMB) temperature and polarization anisotropies in multiple frequencies. low frequency (LF) array was deployed early 2020. It consists of 292 TES bolometers observing two bands centered at 27 GHz 39 GHz. At these frequencies, it sensitive synchrotron radiation from our galaxy as well CMB, complements...
A recently developed plasma-wall self-organization (PWSO) model predicts a significantly enhanced density limit, which may be attainable in tokamaks with ECRH-assisted ohmic startup and sufficiently high initial neutral density. Experiments have been conducted on J-TEXT to validate such limit scenario based this model. Experimental results demonstrate that increasing the pre-filled gas pressure or ECRH power during phase can effectively enhance plasma purity raise at flat-top. Despite...
Abstract The Simons Observatory (SO) experiment is a cosmic microwave background (CMB) located in the Atacama Desert, Chile. SO’s small aperture telescopes (SATs) consist of three designed for precise CMB polarimetry at large angular scales. Each SAT uses cryogenic rotating half-wave plate (HWP) as polarization modulator to mitigate atmospheric 1/f noise and other systematics. To realize efficient modulation over observation bands, we fabricated an achromatic HWP (AHWP) consisting sapphire...
This article presents an in-depth study of the sequence events leading to density limit disruption in J-TEXT tokamak plasmas, with emphasis on boudary turbulent transport and high-field-side high-density (HFSHD) front. These phenomena were extensively investigated by using Langmuir probe Polarimeter-interferometer diagnostics.
Abstract A heterodyne collective scattering system has been designed and developed to investigate the turbulent transport of core plasma on J-TEXT. dual-HCN laser which consists two separately pumped HCN gas lasers at 337 μ m as source system. The intermediate frequency (IF) is ∼1 MHz when there a 4 cavity length difference capable maintain stability more than 5 h without manual operation. Detection channels three different angles (2 ≤ k ⊥ 12 cm −1 ) have installed with Schottky barrier...
The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that consists of three 0.5 m small-aperture telescopes and one 6 large-aperture telescope, sited at an elevation 5200 in the Atacama Desert Chile. SO will utilize more than 60,000 transition edge sensors (TES) to observe CMB temperature polarization six frequency bands from 27-280 GHz. Common both small large aperture telescope receivers (LATR) 300K-4K Universal Readout Harness (URH), which...
The far infrared polarimeter–interferometer system (POLARIS) on the Joint-TEXT has been upgraded recently. A new support structure applied to mixer array of POLARIS for adjusting position mixers precisely. Five detection chords have added low field side by optimizing utilization efficiency laser beams both sides beam splitting grid. spatial resolution can be improved from 3 1.5 cm. better measurement plasma electron density and current obtained after is upgraded. initial experimental result...
The distribution and bending of dislocations in GaN/step-graded (Al,Ga)N/AlN buffer layers grown on Si(111) are investigated by cross-sectional scanning tunnelling microscopy (STM) transmission electron (STEM). We observe with -type Burgers vector intersecting the m-plane cleavage surface having line directions bent off [0001] growth direction toward non-polar directions. spatial indicates consecutive due to strain at interfaces between subsequent lattice mismatched doping junctions,...
The Simons Observatory is a ground-based cosmic microwave background survey experiment that consists of three 0.5 m small-aperture telescopes and one 6 large-aperture telescope, sited at an elevation 5200 in the Atacama Desert Chile. SO will deploy 60,000 transition-edge sensor (TES) bolometers 49 separate focal-plane modules across suite four covering 30/40 GHz low frequency (LF), 90/150 mid (MF), 220/280 ultra-high (UHF). Each MF UHF module packages 1720 optical detectors spreading 12...
The Simons Observatory (SO) is a ground-based cosmic microwave background instrument to be sited in the Atacama Desert Chile. SO will deploy 60,000 transition-edge sensor bolometers 49 separate focal-plane modules across suite of four telescopes covering three dichroic bands termed low frequency (LF), mid (MF) and ultra-high (UHF). Each MF UHF module packages 1720 optical detectors corresponding 100 mK SQUID multiplexing readout components. In this paper we describe testing program have...