energy recovery linacs (ERLs) given at the 32nd Advanced ICFA Beam Workshop on ERLs.
The goal of this paper is to summarize the progress achieved in analytical, numerical, and
experimental studies of the instability and outline available and proposed BBU mitigation
techniques. In this paper, a simplified theory of multipass BBU in recirculating linacs is
presented. Several BBU suppression techniques and their working principles are discussed …