BMAD Beam-Breakup Calculation Update Jim Crittenden ERL @ CESR Meeting 23 July 2009 Statistical Comparison to ERL-06-01 Info on critical HOM/cavity for CM's Minimum ERL
ERL-06-01 Fig. 11a 2006 Lattice with two HOMs and 10 Mhz frequency spread Mean 2076. RMS 341. The BMAD BBU threshold calculation reproduces both the average value and spread of the ERL-06-01 calculations
“Minimal” ERL Optics Design Chris Mayes' dissertation Optimized symmetric linacs Useful for studying BBU optimization methods
Minimal ERL BBU Thresholds Two ERL-06-01 HOMs and 10 Mhz frequency spread Threshold currents similar to CERL 7.4 Critical cavity most often at high-energy end of first linac