Beam-based optical tuning of the Final Focus Test Beam

Author

Tenenbaum, P. ; Burke, D. ; Hartman, S. ; Helm, R. ; Irwin, J. ; Iverson, R. ; Raimondi, P. ; Spence, W. ; Bharadwaj, V. ; Halling, M. ; Holt, J. ; Buon, J. ; Jeanjean, J. ; Le Diberder, F. ; LePeltier, V. ; Puzo, P. ; Oide, K. ; Shintake, T. ; Yamamoto,

Author_Institution

Linear Accel. Center, Stanford Univ., CA, USA

Volume

2

fYear

1995

fDate

1-5 May 1995

Firstpage

749

Abstract

In order to reduce the SLAC 46.6 GeV beam to submicron sizes, the Final Focus Test Beam (FFTB) must meet tight tolerances on many aberrations. These aberrations include: mismatch and coupling of the incoming beam; dispersion; chromaticity; lattice errors in the chromatic correction sections; lattice coupling; and residual sextupole content in the quadrupoles. In order to address these aberrations, we have developed a procedure which combines trajectory analysis, use of intermediate wire scanners, and a pair of novel beam size monitors at the IP. This procedure allows the FFTB IP spot to be reduced to sizes under 100 nanometers

Keywords

beam handling techniques; particle beam focusing; 46.6 GeV; FFTB; FFTB IP spot; Final Focus Test Beam; SLAC 46.6 GeV beam; aberrations; beam size monitors; beam-based optical tuning; chromatic correction sections; chromaticity; coupling; dispersion; intermediate wire scanners; lattice coupling; lattice errors; mismatch; quadrupoles; residual sextupole content; tolerances; trajectory analysis; Chromatic dispersion; Colliding beam devices; Laboratories; Linear accelerators; Magnets; Optical coupling; Optical tuning; Particle beams; Testing; Wire;

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.1995.504779

Filename

504779