High Energy Particle Detector Launched on board China’s Electromagnetic Satellite


China’s latest science satellite, the Zhangheng-1 (ZH-1) – also known as the China Seismo-Electromagnetic Satellite (CSES) - was launched into space from Jiuquan Satellite Launch Center at 15:51 local time on February 2nd, 2018.

ZH-1 carries eight instruments to measure the electromagnetic effects of earthquakes above magnitude 6 in China, and earthquakes above magnitude 7 all over the world.

Among the eight instruments on board the satellite is the High-Energy Particle Package (HEPP), which was developed by the Institute of High Energy Physics, Chinese Academy of Sciences.

HEPP is composed of three instruments designed to measure high energy particles (a solar X-ray detector, a high-energy detector and a low-energy detector). Its main function is to measure the flux, energy spectrum and direction of energetic electrons in the range 0.1-50 MeV and high energy protons at 2-200 MeV, at the position of the orbiting satellite, and monitor real-time changes in the solar X-ray spectrum.

The High-Energy Particle Package is an efficient device to capture the energy spectrum, direction distribution and spatial distribution of high energy particles in space. Scientists believe that the detector could provide a possible approach for exploring space monitoring and even earthquake prediction.


 High-Energy Particle Package, from left to right , a high-energy detector, a low-energy detector and a solar X-ray detector (Image by IHEP)

Contact Information

Mr. Guo Lijun

International Office, IHEP

E-mail: ljguo@ihep.ac.cn