This issue of our newsletter again reflects the continuity, diversity and vitality essential to the health of the field of beam dynamics. Continuity with the past is reflected in the descriptions of research in the still fertile field of beam dynamics in proton synchrotrons.
Diversity is apparent in the span of activities described in just a few articles.
Working within what appears from the outside to be a rather narrow field, you get the chance to apply knowledge of a wide range of the sub-fields of academic physics, not to mention mathematics, engineering, computing and, sooner or later, management science. This can be true even when you spend many years working on one machine and the range of applications of particle beams just adds a further dimension. Few research disciplines offer such variety. Diversity in our institutions is also necessary. Clearly large and small accelerator laboratories contribute to the development of beam physics in different ways.