Design of purification loop and traps for the IFMIF/EVEDA Li Test Loop: Design of cold trap

Engineering Validation and Engineering Design Activities (EVEDA) for the International Fusion Materials Irradiation Facility (IFMIF) were started under a collaborative international project known as the ITER Broader Approach. This paper presents the design of a cold trap for reducing oxygen concentration in Li installed in a purification loop of the EVEDA Li Test Loop (ELTL). Oxygen concentration during operation of the ELTL was estimated and the cold trap is designed with reference to the design of sodium cold trap developed for fast breeder reactor research. The presumed values in this design are expected to be reevaluated through the ELTL test program by using off- and on-line impurity monitors.