Title :
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
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;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.504779
