Abstract
This chapter discusses the design feature of the EAST and its kW/4K cryogenic system. EAST is a Chinese National Project designed to develop scientific and technological basis on the steady state operation of advanced tokamak. The EAST superconducting tokamak is a full superconducting device, which consists of superconducting toroidal field (TF) and poloidal field (PF) magnets, vacuum vessel and in vessel components, thermal shields, and cryostat. The cooled components are TF magnets, PF magnets, support structure, and thermal shields. Dimensions of the EAST device are 10 m (with the main support) in height and 7.6m in diameter. Its total weight is 360 tons. Up to now the device fabrication is going on smoothly, all part of SC Magnet, Cryostat, Vacuum Vessel, and Thermal Shield will be completed this year. One CS coil and 10 of TF coil has been tested, the results show that all of the magnets can meet the design requirement.
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