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The objective of this workshop is to bring together researchers studying high order mode (HOM) suppression in superconducting cavities in the fields ranging from energy recovery linacs, light sources and linear collider applications. HOMs excited by beam in superconducting cavities can create excessive heat load on the cryogenic system and dilute beam quality, giving rise to a beam break up instability in the worst case. The workshop will discuss the current status of both experimental and theoretical work in this area. Issues in electron and proton linacs, Tesla style cavities, 3d harmonic cavities, TEM crabbing and other cavity designs will be considered. Current experiments at Fermilab, JLab, ORNL, Cornell University, and FLASH will be reviewed.
Workshop Working groups (conveners):
- HOM damping requirement (J. Sekutowicz, N. Solyak)
- HOM-based diagnostics (N. Baboi, R. Jones)
- RF simulation and beam dynamics (M. Liepe, O. Napoly)
- HOM damping couplers and loads (J. Delayen, T. Khabiboulline)
- Low level RF, controls and system integration (B. Chase, L. Doolittle)
Fermi National Accelerator Laboratory P.O. Box 500 Batavia, IL 60510-5011 United States
The Registration Fee for this workshop is $169 and covers coffee breaks, supplies, and administrative costs of organizing this event. Payment may be made by check, cash, bank transfer, credit card (MasterCard and Visa only) or project task.

Fermi Research Alliance, LLC will host a reception on Monday, July 14, 2014, at 5:30 p.m. in the Gallery on the Second Floor Crossover of Wilson Hall.  All participants and companions are invited to attend.

Due to lack of interest and a minimum attendance requirement at Riverview Banquets, the workshop dinner is being relocated to the "Top of the Rock" loft at the Rock Bottom Brewery restaurant located at 28256 Diehl Road in Warrenville. Dinner attendees no longer have to purchase tickets because participants will be paying individually for their dinners. Those individuals who paid for the dinner in advance will be issued a credit on their credit cards after the workshop is over. The dinner will still take place on Tuesday evening, July 15, 2014, at 6:30 p.m.