Abstract

Multiturn transverse beam instabilities place limitations on realizable beam currents in e+ e- storage rings. Such instabilities become particularly important as one considers future accelerators employing superconducting RF cavities. Higher order cavity modes (HOM) can couple to betatron and synchrobetatron harmonics and, unless sufficiently damped, will lead to instability. A code has been developed for computer simulation of the beam-HOM interaction. Results obtained agree well with experience. Of particular interest is the result that a realistic spread in synchrotron frequencies provides adequate Landau damping of quadrupole oscillations while not significantly affecting dipole behavior. The simulation predicts a quadrupole instability threshold above 1 Ampere for the Cornell elliptical superconducting cavity design placed in CESR.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.