• R.A. Baartman
  TRIUMF, Vancouver
• G. Franchetti
  GSI, Darmstadt
• E. Métral
  CERN, Geneva

32 papers were presented. Rather than summarizing each one individually, we give a few highlights, conditioned by the items in the working group charge, namely:

1. Summarize the state of the art in simulation capabilities. What developments are needed?
2. Summarize the state of the art in theory. What developments are needed?
3. Summarize recent developments in benchmarking experimental data with simulations. What critical experiments and diagnostic developments are needed to further refine the theory and simulations?
4. Summarize the state of the art in instability mitigation techniques. What further technology developments are needed?
5. Summarize the primary limitations to beam intensity in existing circular machines.
6. Summarize the key beam dynamics questions for high-intensity circular machines
7. Summarize opportunities for advancing the field.

Slides