Title :
Effect of insertion devices on beam dynamics of the 8 GeV light source storage ring
Author :
Nagaoka, R. ; Yoshida, Kenta ; Tanaka, K. Yoshida H ; Tsumaki, K. ; Hara, M.
Author_Institution :
RIKEN-JAERI Synchrotron Radiat. Facility, Tokyo, Japan
Abstract :
The influence of the insertion devices on the beam dynamics of the 8-GeV Chasman-Green lattice was evaluated. Effects were examined for a 166-pole undulator of a period length of 3 cm and a 12-pole wiggler of a period length of 18 cm. Particle tracking was performed with an extended version of the computer code Racetrack. It was found that linear distortion is more pronounced with a wiggler while nonlinear distortion is more pronounced with an undulator. It was also found that the degrees of both linear and nonlinear distortion in the 8-GeV machine are not critical for the operation of the machine. Nonlinear effects of short period devices reduce the vertical dynamic aperture to a considerable extent, but it still exceeds the gap of the chamber required for these devices
Keywords :
beam handling equipment; electron accelerators; particle beam diagnostics; storage rings; 12-pole wiggler; 166-pole undulator; 8 GeV; Chasman-Green lattice; beam dynamics; computer code Racetrack; insertion devices; light source storage ring; linear distortion; nonlinear distortion; short period devices; Electric breakdown; Intrusion detection; Lattices; Light sources; Maxwell equations; Optical distortion; Particle tracking; Storage rings; Synchrotron radiation; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73449
