Optimization of the MCP Detector for the BepiColombo Mission

抄録

The BepiColombo is an international Mercury exploring mission which will be launched in 2014 and reach the planet in 2020. In this paper, we show the development status of the extreme ultraviolet (50-155 nm) detector for the mission. We have optimized the geometry of the micro channel plate that can achieve highest quantum detection efficiency. Furthermore, we have evaluated the quantum detection efficiencies of cesium iodide-coated micro channel plate which have been exposed to the air or dry nitrogen, in order to determine the treatment procedure to prevent performance degradation until the launch.