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Title: Impedance issues in the CERN SPS

Abstract

The future use of the CERN SPS accelerator as injector for the Large Hadron Collider, LHC, and the possible use of the SPS as a neutrino source for the Gran Sasso experiment are pushing the maximum intensity requirements of the accelerator much higher than achieved up to now. At the same time the requirements on beam quality are becoming far more stringent. The SPS machine, built in the 70's, is not a 'smooth' machine. It contains many discontinuities in vacuum chamber cross-section and many cavity-like objects, as well as the 5 separate RF systems at present installed. All these lead to a high impedance, seen by the beam, spread over a wide frequency range. As a result there is a constant fight against instabilities, both single and multi bunch, as the intensity increases. A program of studies is under way in the SPS to identify, reduce, and remove where possible the sources of these impedances.

Authors:
 [1]
  1. CERN, Geneva (Switzerland)
Publication Date:
OSTI Identifier:
21207662
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 496; Journal Issue: 1; Conference: Workshop on instabilities of high intensity hadron beams in rings, Upton, NY (United States), 28 Jun - 1 Jul 1999; Other Information: DOI: 10.1063/1.1301876; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM BUNCHING; BEAM INJECTION; CAVITY RESONATORS; CERN LHC; CERN SPS SYNCHROTRON; COLLIDING BEAMS; ELECTRIC IMPEDANCE; INSTABILITY; NEUTRINOS; PROTON BEAMS; RF SYSTEMS; STABILITY

Citation Formats

Linnecar, T. Impedance issues in the CERN SPS. United States: N. p., 1999. Web. doi:10.1063/1.1301876.
Linnecar, T. Impedance issues in the CERN SPS. United States. https://doi.org/10.1063/1.1301876
Linnecar, T. 1999. "Impedance issues in the CERN SPS". United States. https://doi.org/10.1063/1.1301876.
@article{osti_21207662,
title = {Impedance issues in the CERN SPS},
author = {Linnecar, T},
abstractNote = {The future use of the CERN SPS accelerator as injector for the Large Hadron Collider, LHC, and the possible use of the SPS as a neutrino source for the Gran Sasso experiment are pushing the maximum intensity requirements of the accelerator much higher than achieved up to now. At the same time the requirements on beam quality are becoming far more stringent. The SPS machine, built in the 70's, is not a 'smooth' machine. It contains many discontinuities in vacuum chamber cross-section and many cavity-like objects, as well as the 5 separate RF systems at present installed. All these lead to a high impedance, seen by the beam, spread over a wide frequency range. As a result there is a constant fight against instabilities, both single and multi bunch, as the intensity increases. A program of studies is under way in the SPS to identify, reduce, and remove where possible the sources of these impedances.},
doi = {10.1063/1.1301876},
url = {https://www.osti.gov/biblio/21207662}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 496,
place = {United States},
year = {Fri Dec 03 00:00:00 EST 1999},
month = {Fri Dec 03 00:00:00 EST 1999}
}