As a step in the milestone of the 1 GHz NMR spectrometer project, a 920 MHz (21.6 T) NMR magnet was successfully manufactured at TML in 2001. The magnet is made of 15% Sn-bronze-processed (Nb,Ti)3Sn, Ta-reinforced (Nb,Ti)3Sn and NbTi conductors. It has been used for structural biology studies. In 2003, a 930 MHz (21.9 T) NMR magnet was also developed by using a 16% Sn-bronze-processed (Nb,Ti)3Sn conductor. It has been used for solid state NMR. NMR measurements using a resistive magnet and a hybrid magnet at TML have also started. The present status of our NMR magnets, as well as our future plan will be reported.
Tsukuba Magnet Laboratory