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Highlights of Accelerator R&D at Shanghai Light Sources Cluster  
  • Z.T. Zhao
    SSRF, Shanghai, People’s Republic of China
  In order to establish a world-class photonic science research center, several large-scale facilities including synchrotron radiation light source and free electron lasers had been scheduled at SARI. SSRF had been completed at the end of 2010 and currently in operation as the only third-generation synchrotron radiation source in China. SXFEL-TF has completed and demonstrated EEHG-HGHG mode at the end of 2020. This facility will be upgraded to a EXFEL-UF in 2021. The SHINE project started Infrastructure construction and key instruments development from 2018. Currently the injector tunnel is ready for accelerator installation and commissioning. To ensure the smooth construction of the aforementioned accelerator facilities, the accelerator team has carried out research on a number of key technologies: including superconducting acceleration modules, room temperature high-gradient acceleration technology, advanced undulator technology, and digital beam diagnostics and control technology. This article will briefly introduce the construction and operation of the above-mentioned large scientific facilities, as well as the latest progress of key technology development.  
slides icon Slides MOKL01 [15.931 MB]  
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Large-scale Quantum Communication Network  
  • J. Yin
    USTC, Hefei, Anhui, People’s Republic of China
  Free-space quantum communication with satellites opens a promising avenue for global secure quantum network and large-scale test of quantum foundations. Here we report a serial of experimental progresses on free-space quantum communication over long distance. In the meantime, Chinese Quantum Science Satellite has been launched on August 16th 2016. Through nearly one year of efforts, we have achieved the three major scientific goals’satellite-based entanglement distribution over 1200km, ground-to-satellite quantum teleportation and satellite-to-ground quantum key distribution. Intercontinental quantum communication between China and Europe at locations separated by 7600 km has also been demonstrated, using the satellite as a relay. In this report, we will first introduce the latest experimental progress through Micius, such as the first realization of entanglement-based QKD over 1,120 kilometres without the need for trusted relays, integrated space-to-ground quantum communication network over 4,600 kilometres, and satellite-based quantum-secure time transfer.  
slides icon Slides TUKL01 [7.110 MB]  
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Digital Transformation of Urban Economy and Case Study  
  • D.J. Ning
    SARI-CAS, Pudong, Shanghai, People’s Republic of China
  The speaker hopes to help audience understand the internal driving force of China’s urban economic digital transformation from the perspective of logic thinking, and help entrepreneurs clarify the internal basic logic and main entry points of enterprises, industry parks and other urban entities to carry out digital transformation and upgrading through case analysis.  
slides icon Slides WEKL01 [3.303 MB]  
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Infrared Remote Sensors for Chinese Meteorological Satellites  
  • L. Ding
    Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, People’s Republic of China
  An infrared hyper-spectral sounder, Geostationary Interferometric Infrared Sounder (GIIRS) on-board FY-4A satellite, is the first interferometer with less than 1 wavenumber spectral resolution that works on geostationary orbit. GIIRS takes measurements of three dimensional atmospheric structure from interference of split light beams, complementing the advanced IR sounders in polar orbit. It measures the infrared radiation spectrum distribution in the middle and long wave infrared spectra of the earth by using the Fourier spectroscopic technique. GIIRS provides breakthrough measurements with the temporal, horizontal, and vertical resolution needed to resolve the quickly changing water vapor and temperature structures associated with severe weather events. Through the atmospheric detection made by GIIRS, the weather trend is calculated for the numerical weather prediction model, and the large-scale, rapid, continuous and long-term meteorological measurements have been realized. The international Meteorological community is eager to use the new type of data and get experience with it, as Dr. Tillmann Mohr, former Director-General of EUMETSAT , mentioned.  
slides icon Slides THKL01 [7.464 MB]  
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Laser Ion Accelerator and Its Applications  
  • C. Lin
    PKU, Beijing, People’s Republic of China
  The concept of laser plasma acceleration was first proposed by Tajima and Dawson in 1979, and was soon extended from accelerating electrons with gas targets to accelerating ions with solid targets. It is considered as a promising candidate for future compact accelerator and radiation source. Laser ion acceleration is a very high gradient explosive process’when an ultrahigh-intensity laser irradiates on a solid target, the established acceleration field can exceed TV/m, accelerating ions to high energy within tens of micron distance. The laser-driven pulsed high-current ion sources may enable significant advances in many fields, such as tumor therapy, proton radiograph, warm dense matter and fast ignition of fusion cores. In this presentation, we will introduce several main acceleration mechanisms and the latest research progress of laser ion acceleration. We will also introduce some frontier developments of laser proton accelerator in Peking University. With the support of the Ministry of Science and Technology of China, a prototype of proton radiotherapy system based on PW (10 15 W) laser accelerator is under construction.  
slides icon Slides FRKL01 [8.107 MB]  
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