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In the framework of the preparation for the realization of the international thermonuclear experimental reactor (ITER), the construction and test of relevant models of seven different parts of the reactor was decided. Two of them are related to the superconducting coils: the toroidal field model coil (TFMC) and the central solenoid model coil (CSMC). For these superconducting coils, due to the expected high values of the current (greater or equal to 60kA) and voltage (greater or equal to 5 kV with respect to the ground) the adopted technology was that of cable in conduit conductor (CICC). Until recently, little experience of this technology existed. Therefore, an extensive research and development programme has been carried out, in the last 10 years, by the ITER partners and particularly in Europe, to design, industrialize and test these large conductors and their joints. The EURATOM associations CEA and ENEA played a leading part in this phase. The CICC concept is described and the results of the developments are presented. In the framework of this programme, three full size conductors and joint samples were tested at the European Sultan test facility, to validate the technological choices and check that the ITER specifications were met. The results of these tests are presented in detail. Starting from the strand critical properties, the conductors made of about 1000 strands did reach their expected performance. The joints of these large conductors are very special and delicate components. Their behaviour was quite successful and the joint resistance of these samples was well within the specifications.

Additional information

Authors: DUCHATEAU J-L, Association EURATOM-CEA Cadarache, St Paul-lez-Durance (FR);CIAZYNSKI D, Association EURATOM-CEA Cadarache, St Paul-lez-Durance (FR);LIBEYRE P, Association EURATOM-CEA Cadarache, St Paul-lez-Durance (FR);SPADONI M, Association Euratom-ENEA, Frascati (IT);RICCI M, Association Euratom-ENEA, Frascati (IT);DELLA CORTE A, Association Euratom-ENEA, Frascati (IT);SALPIETRO E, EFDA-CSU, Garching (DE)
Bibliographic Reference: An article published in: Superconductor Science and Technology, 15 (June 2002), pp. R17-R29
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