Status of engineering design of liquid lithium target in IFMIF-EVEDA

Safety concept of the IFMIF/EVEDA lithium test loop

“…The basic structure of the loop [4] is the same as that of the target system of IFMIF [5], and all operation experience, including incidence experience, will be basically reflected to the IFMIF. Ninety percent (1830 kg) of the lithium is held in the main loop, and the residual quantity (approximately 200 kg) is held in the purification and impurity monitoring loops.…”

Present status of Japanese tasks for lithium target facility under IFMIF/EVEDA

“…Two concepts, namely Bayonet and Lip Seal, are considered for the target assembly [1]. JAEA has a responsibility with the Lip Seal concept, and has an idea to use the laser beam for cutting and welding of the lip part of the flanges.…”

“…Function of the Li target system is mainly to keep the steady flow of the liquid Li with 15 (10-20) m/s under the deuterium irradiation with 10 MW (1 GW/m 2 × 0.01 m 2 ). Design requirements of IFMIF Li target were summarized in the previous paper [1].…”

“…In IFMIF/EVEDA, tasks for lithium target system consist of 5 validation tasks (LF1-LF5) and a design task (LF6), and are shared by Japan and Europe [1]. LF1 is the biggest task in the target tasks, and is mainly conducted by JAEA.…”

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

“…The EVEDA tasks related to the Li target facility consist of six tasks. The EVEDA tasks related to the Li target facility was outlined by Nakamura et al [1]. Among these tasks, as a major Japanese activity, a Li Test Loop called the EVEDA Li Test Loop (ELTL) is now under construction at the O-arai site of the Japan Atomic Energy Agency (JAEA), scheduled for completion at the end of February 2011.…”