Title :
Characterization of a PWT photoinjector at heavy beam loading
Author :
Yu, D. ; Smirnov, A.V. ; Newsham, D. ; Luo, Y. ; Zeng, J. ; Braun, H.H.
Author_Institution :
DULY Res. Inc., Rancho Palos Verdes, CA, USA
Abstract :
The performance of a single-section, S-band, plane-wave-transformer (PWT) photoelectron linac is characterized by a high (multi-ampere) average current required for advanced applications such as Compton x-ray sources and linear colliders. Single bunch dynamics and multi-bunch beam loading effects are considered. The threshold current for a regenerative BBU is calculated using a generalized Panofsky-Wenzel theorem, including such effects as the Lorentz force component of the transverse wake field, inhomogeneous solenoidal focusing field, high relative energy gain and interaction with the waves of different polarizations. Stimulated regenerative BBU is considered for cumulative BBU
Keywords :
electron accelerators; linear accelerators; particle beam bunching; particle beam injection; Lorentz force; PWT photoinjector; S-band; generalized Panofsky-Wenzel theorem; multi-bunch beam loading; photoelectron linac; plane-wave-transformer; single bunch dynamics; threshold current; Backscatter; Colliding beam accelerators; Electrons; Frequency; Klystrons; Linear particle accelerator; Optical coupling; Polarization; Power supplies; Threshold current;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987356
