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LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design

The LHC collimation system, ensuring both functions of beam cleaning and machine protection, is potentially submitted to high-energy beam impacts. Currently the collimators setup is performed by monitoring beam losses generated by the collimator jaws when approaching the particle beam. This procedur...

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Autores principales: Dallocchio, A, Bertarelli, A, Boccard, C, Carra, F, Gasior, M, Gentini, L, Timmins, M
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:http://cds.cern.ch/record/1552838
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author Dallocchio, A
Bertarelli, A
Boccard, C
Carra, F
Gasior, M
Gentini, L
Timmins, M
author_facet Dallocchio, A
Bertarelli, A
Boccard, C
Carra, F
Gasior, M
Gentini, L
Timmins, M
author_sort Dallocchio, A
collection CERN
description The LHC collimation system, ensuring both functions of beam cleaning and machine protection, is potentially submitted to high-energy beam impacts. Currently the collimators setup is performed by monitoring beam losses generated by the collimator jaws when approaching the particle beam. This procedure is applied to all LHC collimators (almost one hundred), taking several hours, and needs to be repeated if beam settings change significantly. Furthermore, during the beam-based alignment, the LHC tertiary collimators are potentially exposed to abnormal losses entailing possible damage to their tungsten jaws. To improve the efficiency of the machine operation and better control the particle beam a new advanced design embedding Beam Position Monitors (BPM) into the movable collimator jaws has been developed. This paper describes the mechanical design of various types of future collimators with embedded BPMs. Experimental measurements performed on a simplified functional prototype installed in the CERN SPS showed that, thanks to on-board BPMs, the collimator could be precisely, rapidly, and safely aligned and the beam position accurately measured.
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spelling cern-15528382019-09-30T06:29:59Z http://cds.cern.ch/record/1552838 eng Dallocchio, A Bertarelli, A Boccard, C Carra, F Gasior, M Gentini, L Timmins, M LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design Accelerators and Storage Rings 8: Collimators & materials for higher beam power beam The LHC collimation system, ensuring both functions of beam cleaning and machine protection, is potentially submitted to high-energy beam impacts. Currently the collimators setup is performed by monitoring beam losses generated by the collimator jaws when approaching the particle beam. This procedure is applied to all LHC collimators (almost one hundred), taking several hours, and needs to be repeated if beam settings change significantly. Furthermore, during the beam-based alignment, the LHC tertiary collimators are potentially exposed to abnormal losses entailing possible damage to their tungsten jaws. To improve the efficiency of the machine operation and better control the particle beam a new advanced design embedding Beam Position Monitors (BPM) into the movable collimator jaws has been developed. This paper describes the mechanical design of various types of future collimators with embedded BPMs. Experimental measurements performed on a simplified functional prototype installed in the CERN SPS showed that, thanks to on-board BPMs, the collimator could be precisely, rapidly, and safely aligned and the beam position accurately measured. info:eu-repo/grantAgreement/EC/FP7/227579 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/1552838 2011
spellingShingle Accelerators and Storage Rings
8: Collimators & materials for higher beam power beam
Dallocchio, A
Bertarelli, A
Boccard, C
Carra, F
Gasior, M
Gentini, L
Timmins, M
LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design
title LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design
title_full LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design
title_fullStr LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design
title_full_unstemmed LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design
title_short LHC Collimators with Embedded Beam Position Monitors: a New Adbanced Mechanical Design
title_sort lhc collimators with embedded beam position monitors: a new adbanced mechanical design
topic Accelerators and Storage Rings
8: Collimators & materials for higher beam power beam
url http://cds.cern.ch/record/1552838
http://cds.cern.ch/record/1552838
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