A possible screening procedure for random multipole field errors before tracking studies

Abstract

It is an elaborate process to evaluate the stability limit of particle motion in the presence of multipole field errors. Extensive analysis on the linear and nonlinear lattices and tracking studies are often required. It is therefore very useful to design screening'' procedures to tell if a particular set of multipole errors is unacceptable without extensive studies. Although passing the screening does not necessarily mean good stability limits, failing the screening does mean the stability region is too small to be acceptable. In this note we propose one possible screening procedure to be applied to the random multipole field errors in the SSC. Other screening procedures are not excluded from being applied simultaneously.