Significant progress in the FELiChEM project for major scientific research instruments

[ Instrument Network Instrument Development ] On June 9th, 2019, the national major scientific research equipment development project "Fincilization of Infrared Laser-based Energy Chemistry Research Large Experimental Device" (FELiChEM), an important component of infrared laser light source, was successfully detected. An infrared laser coupled by a small hole.

"The large-scale experiment of energy chemistry research based on tunable infrared laser" is the "three schools and one school" affiliated to the "2011" Energy Materials Chemistry Collaborative Innovation Center Organization Center (Xiamen University, University of Science and Technology, Fudan University and Chinese Academy of Sciences Dalian Chemical Physics Research) The special national scientific research equipment and equipment developed jointly approved and approved. The goal of the project is to build an infrared free electron laser source at the international advanced level to fill the gap in the domestic free-laser laser user device in this band. At the same time, combined with the technical advantages of tuned infrared free electron laser source (IRFEL), the micro-process in the chemical reaction of the surface interface is reinterpreted at multiple levels and multiple angles, so that the physical and chemical research of surface interface in China has risen to a new height. The completion of this large-scale experimental device is highly promising as an important research base in related research fields in the world.

Among them, the tuned infrared free electron laser light source (IRFEL) is composed of an electron injector, a linear electron accelerator, an electron beam current transmission system, an oscillator, a beam line, a control and synchronization system, and an auxiliary system. Most of its components need to be specifically designed and developed according to the requirements of scientific goals. A small number of components can also be purchased for high-quality integration for specific work requirements and environments.

The infrared electronic laser light source was started and commissioned in July 2018. After nearly one year of unremitting efforts by the project light source team, the infrared laser coupled by the small hole was finally detected at about 6 pm on June 9, 2019, and its intensity reached spontaneous. 500 times of radiation, the first set of user-type infrared free electron laser independently developed by China has been realized for the first time.

At present, most of the instruments of the light detection experimental station, the optical dissociation experimental station and the optical excitation experimental station developed in the four core units have been transferred to the FELiChEM experimental hall located in the National Laboratory of Synchrotron Radiation, China University of Science and Technology. Next, the project light source team will make persistent efforts to further elaborate and improve to achieve the expected indicators. At the same time, each experimental station will also be integrated and jointly debugged with the infrared free electron laser source. The implementation of this project is of great significance to the development of energy-related basic scientific research in China.

(Source: Large-scale experimental device project group based on tunable infrared laser, Energy Materials Chemistry Collaborative Innovation Center, University of Science and Technology of China)