ARIES-RS DIVERTOR SYSTEM SELECTION AND ANALYSIS

The ARIES-RS divertor system is selected and analyzed. A radiative div ertor approach using Ne as the radiator is chosen to reduce the maximu m heat flux to < 6 MW m(-2). A 2 mm W layer is used to withstand surfa ce erosion allowing a design life close to 3 full-power-years. This W coating on the V-alloy structure is castellated to meet structural des ign limits. A detailed description of the calculated heat flux distrib ution, thermal-hydraulics, structural analysis, fabrication methods an d vacuum system design are presented. An innovative design using adjus table bolts is utilized to support the divertor plates, withstand disr uption loads and allow adjustment of alignment between plates. With th e exception of the concentration of Ne at the divertor, it is found th at this divertor system design can satisfy all the design criteria and most of the functional requirements specified by the project. (C) 199 7 Elsevier Science S.A.