The new year brings new things | The high-brightness ultraviolet light source independently developed by Fermion Instruments helped Academician Xue Qikun's team complete the ARPES system upgrade

The old year has unfolded thousands of brocades, and the new year will make further progress. Carrying the dawn of the new year, on January 10, 2020, the technicians of the plasma department of Fermion Instruments once again delivered good news. On the MBE-STM-ARPES ultra-high vacuum complex system of the team of Academician Xue Qikun of Tsinghua University, they successfully completed the upgrade and installation of the independently developed BL1200s vacuum ultraviolet light source, successfully replacing the original Scienta VUV5k vacuum ultraviolet light source.

The upgraded BL1200s vacuum ultraviolet light source can use a variety of working gases such as He, Ne, Ar, Kr, and Xe, covering the spectral range of 8.4eV-40.8eV (147.6nm-30.4nm). At the main cavity sample, the ultraviolet light flux of HeI (21.2eV) is greater than 1012photonsc, and the spot size is about 0.8 mm. Compared with the Scienta VUV5k light source, the BL1200s light source is compact and easy to operate. Under the condition of using 1/3 of the power of the original system, the vacuum increment of the main cavity is only 1/3 of that before the upgrade, but the ultraviolet light flux of HeI (21.2eV) has reached 3 times that before the upgrade. For this system upgrade, the plasma department completed the production and delivery within one month, and completed the disassembly of the old system and the installation and optimization of the new system within 3 days, which gave new vitality to the old system worth tens of millions of yuan, ensured the continuous and uninterrupted important experimental research, and helped China's cutting-edge scientific research.

If you want to do your work well, you must first sharpen your tools

Instruments are indispensable tools for scientific research and technological innovation. Whoever has the right to speak on high-end scientific instruments can seize the opportunity of innovation and development and occupy the high ground of scientific research and technological innovation. In 2019, the trade conflict between China and the United States reached its peak. During this year, economic growth slowdown, trade decline, and manufacturing downturn became the main labels of economic pressure on both China and the United States. The shortcomings faced by China in the fields of high-end manufacturing and core technologies have also become the focus of attention after the ZTE incident.

The ZTE incident warns us that companies based on foreign core technologies will sooner or later be controlled by others. Only by learning from the pain, abandoning the doctrine of taking things, strengthening independent core technologies, and further improving the competitiveness of continuous research and development will we not be controlled by others.

As the only multi-gas light source on the market that can work stably for a long time, BL1000s has unparalleled advantages in brightness, output spectral line width, life and stability. After years of testing and adjustment, it can now provide complete solutions for various docking interfaces and uses. The upgraded BL1200s vacuum ultraviolet light source is based on the original BL1000s and BL1010s ultraviolet light sources. It has further developed a more functional multi-energy monochromatic deep ultraviolet light source that can fully meet the various needs of ARPES, UPS, and PEEM users.