High Sensitivity Terahertz Detection Module

High Sensitivity Terahertz Detection Module (HSTDM) is one of the backend modules planned for the Chinese Space Station Telescope. The HSTDM is a $0.41\sim 0.51$ THz high sensitivity, high frequency resolution niobium nitride (NbN) SIS (Superconductor-Insulator-Superconductor) receiver system operating in a temperature range of 10K. The HSTDM will be used to achieve dual science tasks on terahertz astronomical and atmospheric observations from space, while demonstrating the high-energy-gap NbN superconducting mixer technology and terahertz signal source technology in space. In this paper, the HSTDM project and system are presented.