Experiments on the Design of Synchrotron Magnets

Abstract

An important aspect of the problem of synchrotron magnet design is that of obtaining a given magnetic energy in the guide field with the minimum expenditure of iron, copper, and condensers. Tests were made on d.c. magnet models of several configurations, using as criteria (1) the ratio of the peak energy in the useful portion of the magnet air gap to the peak energy which must be stored in the condensers, and (2), the ratio of magnetic flux in the gap to the flux in the return path of the magnetic circuit. Comparative performance data are tabulated. The method of shaping the pole faces to obtain the desired fall‐off of B with r over the greatest range in r is discussed, and a shape worked out by trial and error is given.