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dc.contributor.authorValentino, Gianluca-
dc.contributor.authorAssmann, Ralph W.-
dc.contributor.authorBruce, Roderik-
dc.contributor.authorBurkart, Florian-
dc.contributor.authorPrevitali, Valentina-
dc.contributor.authorRedaelli, Stefano-
dc.contributor.authorSalvachua, Belen-
dc.contributor.authorStancari, Giulio-
dc.contributor.authorValishev, Alexander A.-
dc.date.accessioned2018-02-20T08:22:18Z-
dc.date.available2018-02-20T08:22:18Z-
dc.date.issued2013-
dc.identifier.citationValentino, G., Aßmann, R., Bruce, R., Burkart, F., Previtali, V., Redaelli, S.,... Valishev, A. (2013). Beam diffusion measurements using collimator scans in the LHC. Physical Review Special Topics - Accelerators and Beams, 16(2), 021003.en_GB
dc.identifier.urihttps://www.um.edu.mt/library/oar//handle/123456789/26978-
dc.description.abstractThe time evolution of beam losses during a collimator scan provides information on halo diffusion and population. This is an essential input for machine performance characterization and for the design of collimation systems. Beam halo measurements in the CERN Large Hadron Collider were conducted through collimator scrapings in a dedicated beam study for the first time at 4 TeV. Four scans were performed with two collimators, in the vertical plane for beam 1 and horizontally for beam 2, before and after bringing the beams into collisions. Inward and outward steps were performed. A diffusion model was used to interpret the observed loss rate evolution in response to the collimator steps. With this technique, diffusion coefficients were estimated as a function of betatron oscillation amplitude from approximately 3 to 7 standard deviations of the transverse beam distribution. A comparison of halo diffusion and core emittance growth rates is also presented.en_GB
dc.language.isoenen_GB
dc.publisherAmerican Physical Societyen_GB
dc.rightsinfo:eu-repo/semantics/openAccessen_GB
dc.subjectLarge Hadron Collider (France and Switzerland)en_GB
dc.subjectColliders (Nuclear physics)en_GB
dc.subjectCollimators (Optical instrument)en_GB
dc.titleBeam diffusion measurements using collimator scans in the LHCen_GB
dc.typearticleen_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.en_GB
dc.description.reviewedpeer-revieweden_GB
dc.identifier.doi10.1103/PhysRevSTAB.16.021003-
dc.publication.titlePhysical Review Special Topics - Accelerators and Beamsen_GB
Appears in Collections:Scholarly Works - FacICTCCE

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