Development of a Thermal Control System with Mechanically Pumped CO2 Two-Phase Loops for the AMS-02 Tracker on the ISS

To provide a stable thermal environment for the AMS-Tracker, a thermal control system based on mechanically pumped CO2 two-phase loops was developed. It has been operating reliably in space since May 19, 2011. In this article, we summarize the design, construction, tests, and performance of the AMS-Tracker thermal control system (AMS-TTCS).