Affordable Access

deepdyve-link
Publisher Website

Observation, control and modal analysis of longitudinal coupled bunch instabilities in the ALS via a digital feedback system

Authors
  • Fox, J.D.
  • Claus, R.
  • Hindi, H.
  • Linscott, I.
  • Prabhakar, S.
  • Ross, W.
  • Teytelman, D.
  • Drago, A.
  • Serio, M.
  • Byrd, J.
  • Corlett, J.
  • Stover, G.
Publication Date
Sep 01, 1996
Identifiers
DOI: 10.1063/1.52278
OAI: oai:inspirehep.net:424371
Source
INSPIRE-HEP
Keywords
License
Unknown
External links

Abstract

The operation of a longitudinal multibunch damping system using digital signal processing (DSP) techniques is shown via measurements from the Lawrence Berkeley Laboratory (LBL) Advanced Light Source (ALS). The feedback system (developed for use by PEP-II, ALS, and DAɸNE) uses a parallel array of signal processors to implement a bunch-by-bunch feedback system for sampling rates up to 500 MHz. The programmable DSP system allows feedback control as well as accelerator diagnostics. A diagnostic technique is illustrated which uses the DSP system to excite and then damp the beam. The resulting 12-ms time domain transient is Fourier analyzed to provide the simultaneous measurement of growth rates and damping rates of all unstable coupled-bunch beam modes.

Report this publication

Statistics

Seen <100 times