![]() |
![]() |
![]() ![]() |
Abstract. The ITER Toroidal Field (TF) coils are made up of a winding pack
enclosed in a case. In the central region the noses of the coils are wedge
shaped and fit together to form a circular vault. On the outside an
intercoil support structure joins the coil above and below the equator. The
goal of the ITER project L2 is to verify the design principles, design
procedures, design criteria, operating margins, analysis methods and
manufacturing process, including Quality Assurance (QA) capable of
application to the ITER TF coils. The project is divided into two
subprojects: TF Model Coil (TFMC) construction and testing and TF coil case
fabrication demonstration. The conceptual design of the ITER TFMC has been
carried out by the ITER EU HT, the engineering design and construction by
European Industries. The testing of the TFMC is foreseen in the TOSKA
facility at FZK Karlsruhe starting in the first quarter of 2001. The
feasibility demonstration of the TF coil case is being carried out also by
European industry by: Forging trapezoidal tubes with variable wall
thickness, casting new modified 316LN type material for the intercoil
structure and the parts of the case subject to lower stresses, qualifying
the welding and NDT methods to be applied to the heavy thickness
(250mm) to be joined together to form the casing.
IAEA 2001