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Electron Trajectory in an Undulator with Dipole Field and BPM Errors

Technical Report ·
DOI:https://doi.org/10.2172/839700· OSTI ID:839700
A statistical analysis of a corrected electron trajectory through a planar undulator is presented. The undulator is composed of multiple modular sections each containing N dipoles with random field strength errors and misaligned beam position monitors (BPMs) between each section. An analytical formula for the rms trajectory is derived to aid in the understanding of the impacts of BPM location and alignment on the trajectory. The results are applied to the LCLS FEL undulator where the requirements on electron trajectory straightness are very demanding.
Research Organization:
Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
Sponsoring Organization:
SC
DOE Contract Number:
AC02-76SF00515
OSTI ID:
839700
Report Number(s):
SLAC-TN-05-041
Country of Publication:
United States
Language:
English

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