Momentum Cleaning in the CERN LHC

This paper describes the optimization of the optics and the collimator geometry for the momentum cleaning insertion of the LHC. To collimate the off-momentum secondary halo without disturbing the circ ulating beam, the normalized dispersion in IR3 is made as large as in the arcs. The jaw locations a...

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Detalles Bibliográficos
Autores principales: Kaltchev, D I, Craddock, M K, Servranckx, R V, Risselada, Thys
Lenguaje:eng
Publicado: 1998
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/359256
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author Kaltchev, D I
Craddock, M K
Servranckx, R V
Risselada, Thys
author_facet Kaltchev, D I
Craddock, M K
Servranckx, R V
Risselada, Thys
author_sort Kaltchev, D I
collection CERN
description This paper describes the optimization of the optics and the collimator geometry for the momentum cleaning insertion of the LHC. To collimate the off-momentum secondary halo without disturbing the circ ulating beam, the normalized dispersion in IR3 is made as large as in the arcs. The jaw locations and orientations are numerically optimized to reduce the momentum-dependent halo amplitude. The second ary halo is kept within the available aperture for momentum deviations up to 0.44%, where the horizontal aperture is 4$\sigma\, compared to 12$\sigma\ on-momentum.
id cern-359256
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-3592562023-05-31T13:22:19Zhttp://cds.cern.ch/record/359256engKaltchev, D ICraddock, M KServranckx, R VRisselada, ThysMomentum Cleaning in the CERN LHCAccelerators and Storage RingsThis paper describes the optimization of the optics and the collimator geometry for the momentum cleaning insertion of the LHC. To collimate the off-momentum secondary halo without disturbing the circ ulating beam, the normalized dispersion in IR3 is made as large as in the arcs. The jaw locations and orientations are numerically optimized to reduce the momentum-dependent halo amplitude. The second ary halo is kept within the available aperture for momentum deviations up to 0.44%, where the horizontal aperture is 4$\sigma\, compared to 12$\sigma\ on-momentum.LHC-Project-Report-194CERN-LHC-Project-Report-194oai:cds.cern.ch:3592561998-06-30
spellingShingle Accelerators and Storage Rings
Kaltchev, D I
Craddock, M K
Servranckx, R V
Risselada, Thys
Momentum Cleaning in the CERN LHC
title Momentum Cleaning in the CERN LHC
title_full Momentum Cleaning in the CERN LHC
title_fullStr Momentum Cleaning in the CERN LHC
title_full_unstemmed Momentum Cleaning in the CERN LHC
title_short Momentum Cleaning in the CERN LHC
title_sort momentum cleaning in the cern lhc
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/359256
work_keys_str_mv AT kaltchevdi momentumcleaninginthecernlhc
AT craddockmk momentumcleaninginthecernlhc
AT servranckxrv momentumcleaninginthecernlhc
AT risseladathys momentumcleaninginthecernlhc

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