Data Processing Of CCD Dark Matter Experiment And Adjustment Of Domestic X-ray Focusing Mirror

Since the discovery of dark matter,dark matter detection and research has never stopped,and has become a frontier subject in the field of physical research.However,the nature of dark matter is still unknown,scientists around the world are trying to find out dark matter.Dark matter detection requires a low background environment.In order to better explore the conditions required for dark matter detection,we set up a SET of CCD detection device in China Jinping Underground Laboratory to explore the factors affecting dark matter detection.In order to have a better research of dark matter,Chinese scientists have launched and led a major international cooperative space science project,the enhanced X-ray time-varying and polarization Space Observatory,which will carry the first set of domestically produced X-ray focusing mirrors.The main work of this paper is divided into two parts: The first part studies the influence of radon concentration in low background environment on the detection experimental device through long-term monitoring and data collection in Jinping experiment;The results show that radon gas concentration has an influence on the CCD detection count rate.The correlation coefficient of the total number rate is 0.90±0.03.This work provides data support for the future dark matter detection.The second part assembles and modulates the structural parts and thermal controls of the first set of domestic focusing mirrors,finds out the most appropriate modulation method,improves the assembly process and technology,and provides experience for the future installation and modulation of domestic focusing mirrors.