On the inherent stability of non-isochronous recirculating accelerators

Abstract In a recent paper on polytrons [H. Herminghaus, Nucl. Instr. and Meth. A305 (1991) 1] it was noted rather marginally that non-isochronous recirculation schemes should offer inherently superior energy stability as compared to isochronous schemes. Meanwhile several discussions showed that this beneficial feature does not seem to be recognized widely in the accelerator community. Therefore, in the following, the mechanism involved is briefly described and some numerical examples of its effect are given.