Start-to-end transport design and multi-particle tracking for the ILC electron source*
نویسندگان
چکیده
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 − 09 . 0 ≤ + y x A A m and ≤ Δ × Δ z E (±25MeV)×(±3.46cm) − at the entrance of the damping ring injection line. The field and alignment errors and orbit correction are analyzed.
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