Conceptual design of the W7-X port liners

摘要

The experimental stellarator Wendelstein 7-X has a large variety of ports for plasma diagnostics. For the steady-state operation with 10 MW input power and a plasma pulse length of up to 30 min, 101 diagnostics ports need to be shielded with actively cooled port liners made of stainless steel. A total of 41 variants of port liners taking into account the various port geometries and the interfaces with different types of diagnostics have to be installed. Before starting the production, different concepts have been studied. Five full-scale demonstrators and three different technologies representative of the port liner variety have been designed and are being produced. Results of this fabrication will serve as a basis for the procurement of the 101 port liners. (C) 2016 Elsevier B.V. All rights reserved.