|
abstract:
|
Extensive work has been done involving beam break-up (BBU) in linear accelerators. There is a wealth of analytic and experimental data available. Recently, a comprehensive computer code was developed at LBL to study beam break-up due to wakefields. This thesis will review the basic physics of beam break-up in linear accelerators. A survey of BBU analytic work and a re-derivation of a few significant results will be given at a level better suited to advanced undergraduate and graduate students. Numerical work will center on two devices: the Advanced Test Accelerator at LLNL; and the Two Beam Accelerator, a proposed high gradient accelerator. Additionally, experimental data will be reviewed (for the ATA) to establish agreement between analytic, numerical and experimental work. Although the numerical simulations allow for extremely complex cases to be quickly analyzed, the simpler cases addressed by analytic work (theory) will be heavily emphasized. It will be an aim of this thesis to be at a level which is comprehendible to a student.
|