A5103014110- Nuclear Physics and Applications
- Advanced X-ray Imaging Techniques
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Astronomical Observations and Instrumentation
- Parallel Computing and Optimization Techniques
- Optical Systems and Laser Technology
- Nuclear reactor physics and engineering
- Advanced Measurement and Metrology Techniques
- Image and Object Detection Techniques
- Magnetic confinement fusion research
- Optical measurement and interference techniques
- X-ray Diffraction in Crystallography
Institute of High Energy Physics
2021-2025
China Spallation Neutron Source
2021-2025
Chinese Academy of Sciences
2021-2024
Key Laboratory of Guangdong Province
2024
A multi-slit very small angle neutron scattering (MS-VSANS) instrument has been finally accepted at the China Spallation Neutron Source (CSNS). It is first spallation source based VSANS instrument. MS-VSANS a good signal-to-noise ratio and can cover wide vector magnitude range from 0.00028 to 1.4 Å
Small-angle X-ray and neutron scattering (SAXS SANS) offer complementary insights into multi-scale multiphase structures. Efforts have been made to integrate SAXS SANS instruments, with only D22 at the Institut Laue-Langevin successfully implementing a setup; this was constrained horizontal geometry due space limitations high radiation noise. Here, we introduce an in situ vertical setup beamline 14, Very Small Angle Neutron Scattering (VSANS) instrument, China Spallation Source. The compact...
Abstract Alignment of superconducting cavities is one the important issues for China Spallation Neutron Source Phase II (CSNS II) linac. In order to obtain cavity displacement in process cooling down liquid helium temperature, a laser-based Poisson Spot Monitor (PSM) system was newly proposed and verification laboratory built. The PSM uses diffraction spot formed on CMOS camera after beam parallel laser passes through spherical target monitor position measured object, where fixed monitored...
Abstract Achieving high performance in synchrotron radiation light sources demands increased precision fiducialization and alignment of insertion devices (IDs). Conventional sensor systems utilizing Hall probes for high-precision magnetic field measurements face limitations determining the absolute position center IDs. In this paper, Magnetic Landmark (MLK), a novel solution based on magnetized block structure, is designed to address challenge. The MLK serves as an intermediary, establishing...
Abstract With the development of accelerator technology, scale accelerators is becoming larger, ranging from hundreds meters to several kilometers. For stable operation accelerators, high-precision alignment, positioning, and installation are crucial. Installing all equipment inside tunnel poses safety risks as personnel would be in a closed environment with potential radiation exposure for prolonged periods. To address challenges long adjustment maintenance periods due large-scale most...
A compact nested rotate sextupole permanent magnet (Nest-Rot-SPM) lens was designed for the focusing of pulsed neutrons. It is based on working conditions Very Small Angle Neutron Scattering (VSANS) instrument at China Spallation Source (CSNS), and expected to focus a neutron pulse from 6 Å 10.5 Å, without chromatic aberration. Three hurdles must be addressed, i.e., tremendous torque, heat deposition, synchronization with pulse, respectively. The bore diameter segment length are optimized...