Title :
Beam breakup simulations for the cornell x-ray ERL
Author :
Song, C. ; Hoffstaetter, G.
Author_Institution :
CLASSE, Ithaca
Abstract :
Multi-pass, multi-bunch beam-breakup (BBU) can limit the current in linac-based recirculating accelerators. We have made the computation of the transverse and longitudinal BBU-threshold current available in BMAD,Cornell´s main accelerator simulation library. The coupling of horizontal and vertical motion as well as time of flight effects are automatically contained. Subsequently we present a detailed simulation study of transverse and longitudinal BBU in the proposed 5GeV Energy Recovery Linac light source at Cornell University, including the use of frequency randomization, polarized cavities and optical manipulations to improve the threshold current.
Keywords :
X-rays; accelerator RF systems; accelerator cavities; beam handling techniques; electron accelerators; electron beams; light sources; linear accelerators; particle beam bunching; BBU-threshold current; BMAD; CORNELL X-ray ERL; Cornells main accelerator simulation library; Energy Recovery Linac light source; beam breakup simulations; electron beam; electron volt energy 5 GeV; frequency randomization; linac-based recirculating accelerators; multibunch beam-breakup; multipass beam-breakup; polarized RF cavity; time of flight effects; Acceleration; Computational modeling; Electron beams; Frequency; Libraries; Linear particle accelerator; Optical modulation; Optical polarization; Particle beams; Threshold current;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4441038
