Cargando…

Impact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary Collimators

Accidental beam impacts on the tertiary collimators (TCTs) can lead to significant energy deposition in the triplet region and to leakage of the induced particle shower towards the experimental cavern. In this work, carried out in the context of the planned High Luminosity Upgrade of the LHC, severe...

Descripción completa

Detalles Bibliográficos
Autores principales: Tsinganis, Andrea, Bruce, Roderik, Cerutti, Francesco, Lechner, Anton
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.18429/JACoW-IPAC2017-MOPAB011
http://cds.cern.ch/record/2287338
_version_ 1780956064510902272
author Tsinganis, Andrea
Bruce, Roderik
Cerutti, Francesco
Lechner, Anton
author_facet Tsinganis, Andrea
Bruce, Roderik
Cerutti, Francesco
Lechner, Anton
author_sort Tsinganis, Andrea
collection CERN
description Accidental beam impacts on the tertiary collimators (TCTs) can lead to significant energy deposition in the triplet region and to leakage of the induced particle shower towards the experimental cavern. In this work, carried out in the context of the planned High Luminosity Upgrade of the LHC, severe impacts from asynchronous beam dumps on the horizontal tertiary collimators in cells 4 and 6 of the CMS insertion were studied, with half or a full proton bunch impacting on a collimator jaw. The choice of jaw material is shown to be of great importance, with over a factor of 10 increase in peak energy density values in the triplet coils moving from tungsten (Inermet) to molybdenum graphite jaws. Nevertheless, although the quench limit is exceeded in at least one or more triplet magnets in all the evaluated scenarios, values remain well below the damage limit. Energy spectra of particles leaking into the experimental cavern have also been estimated and are presented here.
id oai-inspirehep.net-1626189
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
record_format invenio
spelling oai-inspirehep.net-16261892019-09-30T06:29:59Zdoi:10.18429/JACoW-IPAC2017-MOPAB011http://cds.cern.ch/record/2287338engTsinganis, AndreaBruce, RoderikCerutti, FrancescoLechner, AntonImpact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary CollimatorsAccelerators and Storage RingsAccidental beam impacts on the tertiary collimators (TCTs) can lead to significant energy deposition in the triplet region and to leakage of the induced particle shower towards the experimental cavern. In this work, carried out in the context of the planned High Luminosity Upgrade of the LHC, severe impacts from asynchronous beam dumps on the horizontal tertiary collimators in cells 4 and 6 of the CMS insertion were studied, with half or a full proton bunch impacting on a collimator jaw. The choice of jaw material is shown to be of great importance, with over a factor of 10 increase in peak energy density values in the triplet coils moving from tungsten (Inermet) to molybdenum graphite jaws. Nevertheless, although the quench limit is exceeded in at least one or more triplet magnets in all the evaluated scenarios, values remain well below the damage limit. Energy spectra of particles leaking into the experimental cavern have also been estimated and are presented here.CERN-ACC-2017-301oai:inspirehep.net:16261892017
spellingShingle Accelerators and Storage Rings
Tsinganis, Andrea
Bruce, Roderik
Cerutti, Francesco
Lechner, Anton
Impact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary Collimators
title Impact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary Collimators
title_full Impact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary Collimators
title_fullStr Impact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary Collimators
title_full_unstemmed Impact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary Collimators
title_short Impact on the HL-LHC Triplet Region and Experiments From Asynchronous Beam Dumps on Tertiary Collimators
title_sort impact on the hl-lhc triplet region and experiments from asynchronous beam dumps on tertiary collimators
topic Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-IPAC2017-MOPAB011
http://cds.cern.ch/record/2287338
work_keys_str_mv AT tsinganisandrea impactonthehllhctripletregionandexperimentsfromasynchronousbeamdumpsontertiarycollimators
AT bruceroderik impactonthehllhctripletregionandexperimentsfromasynchronousbeamdumpsontertiarycollimators
AT ceruttifrancesco impactonthehllhctripletregionandexperimentsfromasynchronousbeamdumpsontertiarycollimators
AT lechneranton impactonthehllhctripletregionandexperimentsfromasynchronousbeamdumpsontertiarycollimators