The WEST project: Current status of the ITER-like tungsten divertor

•We presented the ITER-like W components occurred for the WEST divertor.•The main features including key elements of the design were detailed.•The main results of studies investigating the integration constraints or issues were reported.•The WEST ITER-like divertor design reached a mature stage to enable the launching of the procurement phase.

The WEST (W – for tungsten – Environment in Steady-state Tokamak) project is an upgrade of Tore Supra from a limiter based tokamak with carbon PFCs into an X-point divertor tokamak with full-tungsten armour while keeping its long discharge capability. The WEST project will primarily offer the key capability of testing for the first time the ITER technology in real plasma environment. In particular, the main divertor (i.e. the lower divertor) of the WEST project will be based on actively cooled tungsten monoblock components and will follow as closely as possible the design and the assembling technology, foreseen for the ITER divertor units.The current design of WEST ITER-like tungsten divertor has now reached a mature stage following the 2013 WEST Final Design Review. This paper presents the key elements of the design, reports the technological requirements and reviews the main design and integration issues.