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Title: Comparison of LHC collimator beam-based alignment to BPM-interpolated centers
Authors: Valentino, Gianluca
Sammut, Nicholas
Assmann, Ralph W.
Bruce, Roderik
Müller, G. J.
Redaelli, Stefano
Rossi, Adriana
Lari, Luisella
Keywords: Large Hadron Collider (France and Switzerland)
Colliders (Nuclear physics)
Particle beams, Colliding
Issue Date: 2012
Publisher: Institute of Electrical and Electronics Engineers Inc.
Citation: Valentino, G., Sammut, N., Assmann, R. W., Bruce, R., Müller, G. J., Redaelli, S.,...Lari, L. (2012). Comparison of LHC collimator beam-based alignment to BPM-interpolated centers. International Particle Accelerator Conference, New Orleans. 2062-2064.
Abstract: The beam centers at the Large Hadron Collider collimators are determined by beam-basedalignment, where both jaws of a collimator are moved in separately until a loss spike isdetected on a Beam Loss Monitor downstream. Orbit drifts of more than a few hundredmicrometers cannot be tolerated, as they would compromise the performance of thecollimation system. Beam Position Monitors (BPMs) are installed at various locations aroundthe LHC ring, and a linear interpolation of the orbit can be obtained at the collimatorpositions. In this paper, the results obtained from beam-based alignment are compared withthe orbit interpolated from the BPM data throughout the 2011 and 2012 LHC proton runs.
ISBN: 9783954501151
Appears in Collections:Scholarly Works - FacICTCCE
Scholarly Works - FacICTMN

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