Facility and site needs for the fire project

摘要

This paper describes concepts that have been developed for the layout of the FIRE buildings and facilities, and identifies major site requirements. The FIRE test cell. approximately 30×30 meters, is part of a structurally integrated tokamak and hot cell building. The main operating floor is set at grade, and the tokamak centerline is set 4.2 m above the floor. Overhead space is sufficient to allow a bridge crane to remove the tie rod structure from the assembled tokamak. FIRE will be designed so that the thick outer wall of the vacuum vessel and the TF coils provide enough shielding so that the exterior of the machine remains accessible for hands-on maintenance. However, during operation, and during maintenance activities that require the removal of a port plug, additional shielding is required. A movable shield roof, which operates above the tokamak but below the crane, is provided to close the shield boundary during operations.