Abstract

When the length of wire used to make an HTS magnet is fixed, the magnetic properties of the HTS magnet including the central magnetic field and stored energy mostly depend on the aspect ratio of the HTS magnet. This paper presents calculations of the magnetic properties of a BSCCO HTS magnet at various aspect ratios. The HTS magnet was assumed to be made by pancake windings. The total length of the BSCCO wire was varied from 2 to 10 km. For a specific length of the BSCCO wire, the number of pancake windings was varied up to 70. The inner diameter of the HTS magnet was fixed to be 50 mm and 77 K. When the length of the BSCCO wire was 2 km, the central magnetic field was maximum when 34 pancake windings were used. The maximum central magnetic field and the current of the HTS magnet were 859.3 mT and 21.8 A, respectively. The number of turns of a single pancake winding and the aspect ratio of the HTS magnet were 171 turns and 2.54, respectively.

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