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Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider
Crab cavities (CCs) are a key ingredient of the high luminosity Large Hadron Collider (HL-LHC) project for increasing the luminosity of the LHC. At KEKB, CCs have exhibited abrupt changes of phase and voltage during a time period of the order of a few LHC turns and considering the significant stored...
Autores principales: | , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2014
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevSTAB.17.051001 http://cds.cern.ch/record/2011654 |
_version_ | 1780946621719117824 |
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author | Yee-Rendon, Bruce Lopez-Fernandez, Ricardo Barranco, Javier Calaga, Rama Marsili, Aurelien Tomás, Rogelio Zimmermann, Frank Bouly, Frédéric |
author_facet | Yee-Rendon, Bruce Lopez-Fernandez, Ricardo Barranco, Javier Calaga, Rama Marsili, Aurelien Tomás, Rogelio Zimmermann, Frank Bouly, Frédéric |
author_sort | Yee-Rendon, Bruce |
collection | CERN |
description | Crab cavities (CCs) are a key ingredient of the high luminosity Large Hadron Collider (HL-LHC) project for increasing the luminosity of the LHC. At KEKB, CCs have exhibited abrupt changes of phase and voltage during a time period of the order of a few LHC turns and considering the significant stored energy in the HL-LHC beam, CC failures represent a serious threat in regard to LHC machine protection. In this paper, we discuss the effect of CC voltage or phase changes on a time interval similar to, or longer than, the one needed to dump the beam. The simulations assume a quasistationary-state distribution to assess the particles losses for the HL-LHC. These distributions produce beam losses below the safe operation threshold for Gaussian tails, while, for non-Gaussian tails are on the same order of the limit. Additionally, some mitigation strategies are studied for reducing the damage caused by the CC failures. |
id | oai-inspirehep.net-1331178 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2014 |
record_format | invenio |
spelling | oai-inspirehep.net-13311782022-08-10T20:29:52Zdoi:10.1103/PhysRevSTAB.17.051001http://cds.cern.ch/record/2011654engYee-Rendon, BruceLopez-Fernandez, RicardoBarranco, JavierCalaga, RamaMarsili, AurelienTomás, RogelioZimmermann, FrankBouly, FrédéricSimulations of fast crab cavity failures in the high luminosity Large Hadron ColliderHigh-Energy Accelerators and CollidersAccelerators and Storage RingsCrab cavities (CCs) are a key ingredient of the high luminosity Large Hadron Collider (HL-LHC) project for increasing the luminosity of the LHC. At KEKB, CCs have exhibited abrupt changes of phase and voltage during a time period of the order of a few LHC turns and considering the significant stored energy in the HL-LHC beam, CC failures represent a serious threat in regard to LHC machine protection. In this paper, we discuss the effect of CC voltage or phase changes on a time interval similar to, or longer than, the one needed to dump the beam. The simulations assume a quasistationary-state distribution to assess the particles losses for the HL-LHC. These distributions produce beam losses below the safe operation threshold for Gaussian tails, while, for non-Gaussian tails are on the same order of the limit. Additionally, some mitigation strategies are studied for reducing the damage caused by the CC failures.oai:inspirehep.net:13311782014 |
spellingShingle | High-Energy Accelerators and Colliders Accelerators and Storage Rings Yee-Rendon, Bruce Lopez-Fernandez, Ricardo Barranco, Javier Calaga, Rama Marsili, Aurelien Tomás, Rogelio Zimmermann, Frank Bouly, Frédéric Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider |
title | Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider |
title_full | Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider |
title_fullStr | Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider |
title_full_unstemmed | Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider |
title_short | Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider |
title_sort | simulations of fast crab cavity failures in the high luminosity large hadron collider |
topic | High-Energy Accelerators and Colliders Accelerators and Storage Rings |
url | https://dx.doi.org/10.1103/PhysRevSTAB.17.051001 http://cds.cern.ch/record/2011654 |
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