New magnets available

This summer, the National Magnet Laboratory at the Massachusetts Institute of Technology began operating several new high‐field water‐cooled dc magnets. One of them, a modified Bitter‐type magnet with a $112″$ working bore, has reached 156 kG. It has been used in experiments on the Mössbauer effect and ultrasonic attenuation in metals. Another new magnet, with a four‐inch bore and high homogeneity, utilizing a radially cooled plate structure, has been operated at 65 kG. It is designed to reach a field of 100 kG, but will be operated at a lower level for some time to allow evaluation of its performance and to permit its use in a program of nuclear magnetic resonance research.