Bunch length measurements at the Advanced Photon Source (APS) linear accelerator

Author

Sereno, N.S. ; Fuja, R. ; Gold, C. ; Grelick, A.E. ; Nassiri, A. ; Song, J.J. ; White, M.

Author_Institution

Adv. Photon Source, Argonne Nat. Lab., IL, USA

Volume

2

fYear

1995

fDate

1-5 May 1995

Firstpage

1070

Abstract

Measurements of the APS linac micro-bunch length are performed by backphasing a single 2856-MHz, S-band linac waveguide and using a downstream spectrometer to observe the beam. By measuring the beam width in the dispersive plane as a function of RF power into the linac waveguide, the bunch length can be determined absolutely provided the beam energy and dispersion at the spectrometer are known. The bunch length determined in this fashion is used to calibrate a fifth-harmonic bunch length cavity which is used for real-time bunch length monitoring

Keywords

X-ray production; accelerator RF systems; accelerator cavities; beam handling techniques; electron accelerators; electron spectrometers; electron spectroscopy; particle beam diagnostics; storage rings; 2856 MHz; APS linac microbunch length; APS linear accelerator; Advanced Photon Source; RF power; beam width; bunch length measurements; dispersive plane; downstream spectrometer; fifth-harmonic bunch length cavity; real-time bunch length monitoring; single S-band linac waveguide backphasing; Dispersion; Energy measurement; Length measurement; Linear particle accelerator; Monitoring; Performance evaluation; Planar waveguides; Power measurement; Radio frequency; Spectroscopy;

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.1995.505132

Filename

505132