Start-to-end Transport Design and Multi-particle Tracking for the ILC Electron Source

Zhou, F. ; Batygin, Y. ; Brachman, A. ; Clendenin, J. ; Miller, R.H. ; Sheppard, J.C. ; Woodley, M.D. ; /SLAC

关键词: ELECTRON BEAMS;    POLARIZED BEAMS;    BEAM BUNCHING;    ALIGNMENT;    DAMPING;    DESIGN;    EFFICIENCY;    BEAM PROFILES;    BEAM INJECTION;    PERFORMANCE Accelerators;    ACCPHY;   

DOI  :  10.2172/898870
RP-ID  :  SLAC-PUB-12240
PID  :  OSTI ID: 898870
Others  :  TRN: US200708%%13

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

A train of 2-ns micro bunches of longitudinally polarized electrons are generated in a 120-kV DC-gun based injector in the ILC electron source; a bunching system with extremely high bunching efficiency to compress the micro-bunch down to 20 ps FWHM is designed. Complete optics to transport the electron bunch to the entrance of the 5-GeV damping ring injection line is developed. Start-to-end multi-particle tracking through the beamline is performed including the bunching system, pre-acceleration, chicane, 5-GeV superconducting booster linac, spin rotators and energy compressor. It shows that 94% of the electrons from the DC-gun are captured within the damping ring 6-D acceptance--A{sub x} + A{sub y} {le} 0.09 m and {Delta}E x {Delta}z {le} ({+-} 25 MeV) x ({+-} 3.46 cm)--at the entrance of the damping ring injection line. The field and alignment errors and orbit correction are analyzed.