Predictive study of current sharing temperature test in the Toroidal FieldModel Coil without LCT coil using the M&M code

The Toroidal Field Model Coil (TFMC) will be tested next year at Forschungs zentrum Karlsruhe, Germany, in the frame of the International Thermonuclear Experimental Reactor (ITER). The TFMC is pancake-wound on radial plates us ing 10 Nb3Sn two-channel cable-in-conduit conductors, jointed on the inner- and outer-side of the coil. The drivers for the test of current sharing te mperature (T-cs) are the resistive heaters located on the inlet plumbing to each conductor (DP1.1, DP1.2) of the first double pancake (DP1). Since all available sensors are outside the coil, T-cs in the conductor must be meas ured indirectly, which requires sophisticated analysis tools because of the complexity of the system. In the present work we use the recently develope d Multi-conductor Mithrandir (M&M) code. The main aim of the paper is of as sessing computationally possible scenarios of normal zone initiation in the high field region of the conductor, without quench propagation out of the inlet joint, in the test configuration without LCT coil. (C) 2001 Elsevier Science Ltd. All rights reserved.