Development of a high homogeneity 14T magnet

A high homogeneity magnet, up to 14 Tesla at 4.2 K with magnet bore of 74mm was developed. This magnet is the starting point in order to develop a 600 MHz/52 mm magnet system for NMR spectroscopy. The field homogeneity is bett er than 5ppm over 1cm diameter sphere volume without any shim-coils. The ma gnet can be operated in persistent mode and driven mode, The required magne tic field decay rate is 0.1 ppm/hour. A quench analysis has been studied. M agnetic and structural analysis has been performed, Main data of the magnet system, phases of technological development and test results are reported in this paper.