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Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC

The LHC heavy-ion program with 208Pb⁸²⁺ beams is foreseen to benefit from a significant intensity upgrade in 2022. A performance limitation may arise from ion fragments scattered out of the collimators in the betatron cleaning insertion, which risk quenching superconducting magnets during periods of...

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Autores principales: Potoine, Jean-Baptiste, Bruce, Roderik, Cai, Rongrong, Esposito, Luigi Salvatore, Hermes, Pascal, Lechner, Anton, Redaelli, Stefano, Waets, Andreas, Wrobel, Frederic
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.18429/JACoW-IPAC2022-WEPOST018
http://cds.cern.ch/record/2845750
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author Potoine, Jean-Baptiste
Bruce, Roderik
Cai, Rongrong
Esposito, Luigi Salvatore
Hermes, Pascal
Lechner, Anton
Redaelli, Stefano
Waets, Andreas
Wrobel, Frederic
author_facet Potoine, Jean-Baptiste
Bruce, Roderik
Cai, Rongrong
Esposito, Luigi Salvatore
Hermes, Pascal
Lechner, Anton
Redaelli, Stefano
Waets, Andreas
Wrobel, Frederic
author_sort Potoine, Jean-Baptiste
collection CERN
description The LHC heavy-ion program with 208Pb⁸²⁺ beams is foreseen to benefit from a significant intensity upgrade in 2022. A performance limitation may arise from ion fragments scattered out of the collimators in the betatron cleaning insertion, which risk quenching superconducting magnets during periods of short beam lifetime. In order to mitigate this risk, an alternative collimation technique, relying on bent crystals as primary collimators, will be used in future heavy-ion runs. In this paper, we study the power deposition in superconducting magnets by means of FLUKA shower simulations, comparing the standard collimation system against the crystal-based one. The studies focus on the dispersion suppressor regions downstream of the betatron cleaning insertion, where the ion fragment losses are the highest. Based on these studies, we quantify the expected quench margin expected in future runs with 208Pb⁸²⁺ beams.
id cern-2845750
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2022
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spelling cern-28457502023-01-11T21:31:16Zdoi:10.18429/JACoW-IPAC2022-WEPOST018http://cds.cern.ch/record/2845750engPotoine, Jean-BaptisteBruce, RoderikCai, RongrongEsposito, Luigi SalvatoreHermes, PascalLechner, AntonRedaelli, StefanoWaets, AndreasWrobel, FredericPower Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHCAccelerators and Storage RingsThe LHC heavy-ion program with 208Pb⁸²⁺ beams is foreseen to benefit from a significant intensity upgrade in 2022. A performance limitation may arise from ion fragments scattered out of the collimators in the betatron cleaning insertion, which risk quenching superconducting magnets during periods of short beam lifetime. In order to mitigate this risk, an alternative collimation technique, relying on bent crystals as primary collimators, will be used in future heavy-ion runs. In this paper, we study the power deposition in superconducting magnets by means of FLUKA shower simulations, comparing the standard collimation system against the crystal-based one. The studies focus on the dispersion suppressor regions downstream of the betatron cleaning insertion, where the ion fragment losses are the highest. Based on these studies, we quantify the expected quench margin expected in future runs with 208Pb⁸²⁺ beams.oai:cds.cern.ch:28457502022
spellingShingle Accelerators and Storage Rings
Potoine, Jean-Baptiste
Bruce, Roderik
Cai, Rongrong
Esposito, Luigi Salvatore
Hermes, Pascal
Lechner, Anton
Redaelli, Stefano
Waets, Andreas
Wrobel, Frederic
Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC
title Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC
title_full Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC
title_fullStr Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC
title_full_unstemmed Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC
title_short Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC
title_sort power deposition studies for crystal-based heavy ion collimation in the lhc
topic Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-IPAC2022-WEPOST018
http://cds.cern.ch/record/2845750
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