Core Insights - The first high-energy direct geometric inelastic neutron scattering spectrometer in China has been successfully accepted, marking a significant advancement in the field of neutron scattering research [1][2] - This spectrometer fills a gap in the availability of high-energy inelastic neutron scattering instruments above 100 meV in China, providing a crucial research platform for various materials [1] - The spectrometer is designed to expand research capabilities from static material structures to dynamic material behaviors [1] Group 1 - The high-energy inelastic neutron scattering spectrometer, developed by Sun Yat-sen University and the China Spallation Neutron Source Science Center, is referred to as a "super camera" [1] - It began construction in September 2019 and features innovative designs in multi-beam experimental modes, with several self-developed components [1] - The spectrometer achieved its first neutron beam detection on January 12, 2023, after two years of debugging, with an incident neutron energy range of 10-1500 meV and a best energy resolution of 3% [1] Group 2 - The spectrometer utilizes the unique properties of neutrons, such as being electrically neutral and having strong penetration capabilities, to directly probe the microscopic movements within materials [2] - It can detect dynamic processes of atoms and molecules on a picosecond timescale, effectively allowing for "video" recording of material behaviors, unlike other spectrometers that only provide "photographs" [2] - Following its acceptance, the spectrometer will enter a trial operation phase and is expected to be officially available to users by 2026, supporting advanced research in high-temperature superconductivity, quantum magnetism, thermoelectric materials, and more [2]

Core Points - The first high-energy direct geometry inelastic neutron scattering time-of-flight spectrometer in China has been successfully delivered and accepted for use, marking a significant advancement in the field of inelastic neutron scattering [2][3] - The spectrometer fills a gap in inelastic neutron scattering above 100 MeV, indicating a key step forward for China in this scientific area [2] - The spectrometer is designed to provide insights into the dynamic information of materials at the atomic level, enabling the study of various physical and chemical processes [3] Summary by Sections - **Development and Collaboration** - The high-energy spectrometer was developed through a collaboration between Sun Yat-sen University and the Institute of High Energy Physics of the Chinese Academy of Sciences, formalized in a cooperation agreement signed in December 2017 [2] - The successful acceptance of the spectrometer was confirmed by experts who evaluated its performance against design specifications [2] - **Technical Capabilities** - The spectrometer utilizes the unique properties of neutrons, which are electrically neutral and have strong penetration capabilities, allowing for direct observation of microscopic movements within materials [2] - It can detect dynamic processes of atoms and molecules on a picosecond timescale, capturing how they vibrate, rotate, and transfer energy [3] - **Applications and Impact** - The high-energy spectrometer will support advanced research in various fields, including high-temperature superconductivity, quantum magnetism, thermoelectric materials, ion diffusion in batteries, and biological materials [3] - As a major national scientific infrastructure, it will be open for use across multiple disciplines, providing robust support for fundamental research in physics, chemistry, materials science, and biology [3]

Core Viewpoint - The successful acceptance of China's first high-energy direct geometry inelastic neutron scattering time-of-flight spectrometer fills a significant gap in the country's capabilities for inelastic neutron scattering above 100 meV, enabling advanced studies of material's microscopic structures and dynamic properties [2][3]. Group 1: Instrument Capabilities - The high-energy inelastic neutron scattering spectrometer can measure both the spatial distribution and energy changes of scattered neutrons, allowing for the analysis of material's microscopic dynamic behaviors in momentum and energy space [3]. - It operates with an incident neutron energy range of 10-1500 meV, achieving an optimal energy resolution of 3% for dynamic excitation signals [3]. - The spectrometer supports a wide temperature range of 1.5-800 K and a magnetic field environment of up to 7T, covering most experimental scenarios for inelastic neutron scattering [3]. Group 2: Scientific Value - In high-temperature superconductivity research, the spectrometer can accurately measure spin fluctuations in superconductors, analyze their relationship with superconductivity, and provide critical experimental evidence for understanding high-temperature superconducting mechanisms [4]. - In the field of energy materials, it can track the diffusion processes of atoms and ions in lithium batteries and hydrogen storage materials, offering theoretical guidance for designing higher-performance energy materials [4]. - In biomedicine, the spectrometer enables the study of the dynamic behavior of biological macromolecules like proteins under near-physiological conditions, paving the way for new drug development [4]. Group 3: Future Prospects - The construction team of the spectrometer has initiated the development of a multi-field coupling loading analysis module, supported by national major scientific instrument development projects [4]. - With its acceptance and upcoming user access, the spectrometer is set to embark on a journey of scientific exploration, helping scientists uncover more mysteries of nature and providing strong support for the development of fundamental disciplines such as physics, chemistry, materials science, and biology [4].

Core Points - The first high-energy direct geometry inelastic neutron scattering time-of-flight spectrometer in China has been accepted and put into use, marking a significant advancement in material dynamics research [1][3] - This spectrometer will provide experimental conditions for research in physics, chemistry, materials science, mechanics, and interdisciplinary studies [1] Group 1 - The unique feature of the spectrometer is its ability to utilize the non-charged and penetrating nature of neutrons to directly probe the microscopic movements within materials [3] - It fills the gap in inelastic neutron scattering above 100 meV in China, allowing for the measurement of both spatial distribution and energy changes of scattered neutrons [3] - The spectrometer can measure the dynamic behavior of microscopic structures in both momentum and energy space, enhancing the understanding of material properties [3] Group 2 - The spectrometer employs a combination of Fermi chopper and bandwidth chopper to enable rapid switching between multi-wavelength and single-wavelength modes [3]