Survey and analysis of line-frequency interference in the CEBAF accelerator

Author

Tiefenback, M.G. ; Li, Rui

Author_Institution

Continuous Electron Beam Accel. Facility, Newport News, VA, USA

Volume

3

fYear

1995

fDate

1-5 May 1995

Firstpage

1870

Abstract

Feedthrough of interference from the AC power line into accelerator components is a problem which in pulsed accelerators can be reduced by operation synchronous with the AC line. This means of avoiding line-frequency effects is ineffective for continuous wave machines such as the CEBAF accelerator. We have measured line-frequency perturbations at CEBAF both in beam position and energy by using the beam position monitor system as a multiple-channel sampling oscilloscope. Comparing these data against the measured static optics (taken synchronously with the AC line) we have been able to identify point sources of interference, and resolve line-synchronous variations in the beam energy at a level near 0.001%

Keywords

beam handling equipment; beam handling techniques; electron accelerators; particle beam diagnostics; AC power line; CEBAF accelerator; beam energy; beam position; beam position monitor system; interference feedthrough; line-frequency interference; line-synchronous variations; multiple-channel sampling oscilloscope; point sources; pulsed accelerators; static optics; synchronous operation; Acceleration; Delay effects; Electron accelerators; Electron beams; Energy measurement; Interference; Monitoring; Particle beams; Position measurement; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505390

Filename

505390