Overview of the engineering design of the ITER divertor improvements towards manufacture

A divertor design, supported by R&D, capable of sustaining high heat loads and large electro-magnetic disturbances has been reported previously [1,2]. This paper reports on design improvements that, in response to reaction from researchers and industry, focus on cost reductions, holding to a minimum the number of component variants and pursuing the establishment of workable acceptance criteria for divertor armour joints (the latter reported in [3]). In addition, comment from remote assembly experts has prompted improvements of the in-vessel handling and cassette to vessel attachments.