抄録
The Central Solenoid (CS) model coil program was established in 1992 as one of the projects for the Engineering Design Activity (EDA) of the International Thermonuclear Experimental Reactor (ITER). The Toroidal Field (TF) insert was developed by Russia to demonstrate TF conductor performance and tested in the bore of the CS model coil under application of a 13-T magnetic field. The TF insert was successfully charged to 46kA at 13T. In this paper, we describe the quench characteristics and results of AC loss measurements. In order to investigate the quench characteristics of the TF conductor, quench tests were performed at 46kA, 12T and 6.5K. An inductive heater 200mm in length was utilized to create artifical quenching and the currents of the TF insert and CS model coil were kept for 9s after normal zone appearance. The normal zone length was 16m, and the maximum velocity was 2m/s. The maximum temperature was estimated as 160K with slight deviation. For AC loss measurement, the mandrel is a large error source, and it is difficult to separate coupling loss at the TF insert from measured AC loss at a faster charge. Hysteresis loss was measured utilizing the calorimetric method, and the values were almost same as the expected values from strand data.
