Coherent synchrotron radiation induced emittance growth in a chicane buncher

Short high-current microbunches are of considerable importance for future linear colliders and electron beam sources of coherent radiation such as X-ray free-electron lasers. There is recent interest in beam degradation associated with the transport of short high-current electron beams in magnetic bends and bunchers. We compare the observed emittance growth in an existing magnetic buncher system at Boeing with that calculated when coherent synchrotron radiation (CSR) effects are included, and conclude that the CSR effects are significant.