The Calculation of an Air Gap Between Pancake Windings in a Superconducting Magnet by Using the Response Surface Method

摘要

The effects of a gap at a high temperature superconducting magnet which has an insert magnet and an outsert magnet are examined. Both magnets consist of pancake windings. The optimum gap of an insert magnet and an outsert magnet are calculated by using the response surface method. The insert magnet consists of 8 YBCO pancake windings. The number of turns of a pancake winding and the inner diameter of the insert magnet are 60 turns and 40 mm, respectively. The outsert magnet consists of 12 BSCCO-2223 pancake windings. The number of turns of a pancake winding and the inner diameter of the outsert magnet are 100 turns and 115 mm, respectively. The calculation results show the optimum gap of the insert magnet and the outsert magnet are 0 and 10.3 mm, respectively. When there is a gap of 10.3 mm in the outsert magnet the central magnetic field increased by 11.4% from 604.2 to 542.6 mT. RSM is proved to be an effective mean for finding optimum gaps in a shorter time comparing with other non-deterministic optimization technique.