Core Viewpoint - The first high-energy direct geometry inelastic neutron scattering time-of-flight spectrometer in China has been successfully accepted and put into use, marking a significant advancement in the observation of the microscopic structure and dynamic properties of materials [1][2]. Group 1: Instrument Overview - The spectrometer, developed by Sun Yat-sen University and the China Spallation Neutron Source, fills a gap in inelastic neutron scattering above 100 meV in China [1]. - It functions as a "super camera" that captures the dynamics of atomic and molecular vibrations and rotations on a picosecond timescale, providing detailed insights into the microscopic world [1]. Group 2: Scientific Applications - The instrument can measure the spatial distribution and energy changes of scattered neutrons, aiding in the study of the dynamic behavior of material microstructures and the strength of magnetic atomic correlations [2]. - In high-temperature superconductivity research, it can accurately measure spin fluctuations and phonon density of states in superconductors, providing critical experimental evidence for understanding high-temperature superconducting mechanisms [2]. - In the field of energy materials, it can measure the spatial distribution of phonon spectra in thermoelectric materials, guiding the design of higher-performance thermoelectric materials [2]. - In biomedicine, neutron scattering technology allows scientists to study the motion of biomolecules under conditions closer to physiological environments, opening new avenues for drug development [2]. Group 3: Development Process - The construction of the spectrometer began in 2019 after a strategic cooperation agreement was signed in 2017, following two years of verification and preliminary research [3]. - The development involved collaboration among multiple technical teams to overcome challenges in key components such as the neutron chopper and large vacuum scattering chamber [3]. - After more than two years of debugging, the spectrometer has achieved internationally leading performance levels and will be open for use by domestic and international researchers [3].

Core Viewpoint - The successful completion and delivery of China's first high-energy direct geometry inelastic neutron scattering time-of-flight spectrometer marks a significant advancement in the observation of the microscopic structure and dynamic properties of materials, filling a gap in inelastic neutron scattering above 100 meV in China [1][2]. Group 1: Instrument Overview - The spectrometer, developed by Sun Yat-sen University and the China Spallation Neutron Source, is likened to a "super camera" that captures dynamic processes of atomic and molecular vibrations and rotations on a picosecond timescale [1]. - It operates by measuring the spin waves and phonon spectra of materials, utilizing the non-charged and penetrating nature of neutrons to probe microscopic movements within materials [1][2]. Group 2: Applications and Research Support - The instrument can provide spatial distribution and energy change information of scattered neutrons, aiding in the study of magnetic atomic correlations within materials, thus supporting foundational research across physics, chemistry, biology, and materials science [2]. - In high-temperature superconductivity research, the spectrometer can accurately measure spin fluctuations and phonon density of states in superconductors, providing critical experimental evidence for understanding high-temperature superconducting mechanisms [2]. - In the field of energy materials, it can measure the spatial distribution of phonon spectra in thermoelectric materials, guiding the design of higher-performance thermoelectric materials [2]. - In biomedicine, neutron scattering technology allows scientists to study the motion of biomolecules under conditions closer to physiological environments, opening new avenues for drug development [2]. Group 3: Development Process - The construction of the spectrometer began in 2019 after a strategic cooperation agreement was signed in 2017, following two years of feasibility studies and research [3]. - The development involved collaboration among multiple technical teams to overcome challenges in key components such as the neutron chopper and large vacuum scattering chamber [3]. - After two years of debugging, the spectrometer has achieved internationally leading performance levels, capable of rapid switching between multi-wavelength and single-wavelength modes, and providing environments for a wide range of inelastic neutron scattering experiments [3]. - The "super camera" will be open for use by domestic and international researchers, serving national strategic needs and fostering the development of top-tier professionals [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].