Development and Manufacture of a PF Conductor Tail Mock-Up
The ITER-PF winding pack�s design consists of a stack of double pancakes made of NbTi CIC conductor, with a square section stainless steel jacket. At each electrical joint, and terminals, a structural element is required to react the operating hoop load on the conductor. In the present design, this is provided by a �conductor tail�, welded to the conductor jacket and bonded to the adjacent turns. The operational hoop load is in this way transmitted to the bulk of the coil, by shear stresses, through the interposed insulation. A FEM based design was previously developed based on a hollow profiled tail, with a length in the range 600-650 mm. The manufacturing of the prototype conductor tail has now been qualified with the production of four tails, followed by tests to weld the conductor tail to the PF conductor jacket, bent at 500 mm radius, as for the PF pancake conductor exits. At present, a full-size mock-up of the conductor tail, simulating its working conditions, is in the process of being assembled. This includes two of the conductor tails previously manufactured and steel plates simulating the inertia of the adjacent conductors. The conductor tail and the adjacent parts are insulated with fiberglass - Kapton tape, assembled with G10 filler blocks and impregnated, to form a mock-up in the shape of straight beam. The mock-up is to be subject to fatigue tests, at the laboratory of ENEA-Brasimone, at LN2 temperature, twice the nominal load for 60 000 cycles.
Bibliographic Reference: An oral paper given at: 19th International Conference on Magnet Technology Organised by: INFN Sezione di Genova; Genova (IT) Held at: Congress Centre "Magazzini del Cotone", Genova (IT)
Availability: Available from Association EURATOM-CEA, Département de Recherches sur la Fusion Contrôlée, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail: firstname.lastname@example.org
Record Number: 200518348 / Last updated on: 2005-10-04
Original language: en
Available languages: en