  Beam quality preservation during transport of high-brightness electron beams
is of general concern in the design of modern accelerators. Methods to manage
incoherent synchrotron radiation (ISR) have been in place for decades; as beam
brightness has improved coherent synchrotron radiation (CSR) and the
microbunching instability (uBI) have emerged as performance limitations. We
apply the compensation analysis of diMitri, Cornacchia, and Spampinati - as
previously used by Borland - to the design of transport systems for use with
low-emittance beams, and find that appropriately configured second order
achromats will suppress transverse emittance growth due to CSR and appear to
limit uBI gain.

Accelerator Physics