This paper presents unique first wall tile attachment concepts of round or square graphite tiles to an Inconel 625 vacuum vessel (VV) with carbon-carbon (c-c) structural/mechanical elements to satisfy the following objectives.

  1. A low profile installation to optimize field efficiency.
  2. Tile alignment of sufficient precision to fully protect the VV, without adverse interference of the plasma.
  3. Adequate structural capacity to safely accommodate normal static and dynamic loads as well as disruption and handling loads.
  4. A tile and tile shank-to-VV wall stud mechanical interface that provides an acceptable level of conductive heat transfer while accommodating freedom of thermal expansion and contraction.
  5. A minimum irradiated life expectancy of 3,000 operating pulses.
  6. A reliable and repeatable method of replacing first wall tiles by means of a conventional remote manipulator device.