Optimization and nonlinear solver experiences in high-intensity rf ion linac problems

摘要

Optimization techniques and nonlinear equation solvers have long been used as tools for advanced problems in high-intensity rf ion linacs. It is expected that the use of these tools will increase dramatically in the future, as computer software and hardware facilitates their development and use. Three such problems are discussed: development of an rf field tuning method to work around a systematic error in the LAMPF linac, investigation of this tuning method to identify why it does not always converge, and investigations of the fundamental space-charge physics of linacs for minimizing beam losses.