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What needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systems

After the initial plans in 2007 to run the LHC at 7 TeV, a number of unexpected events, and the extended knowledge of the machine that came after them, have convinced us to gradually reduce the beam energy to the current 3.5 TeV. As a consequence of this, some circuits have been commissioned to diff...

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Detalles Bibliográficos
Autor principal: Catalan Lasheras, N
Publicado: CERN 2011
Materias:
XX
Acceso en línea:https://dx.doi.org/10.5170/CERN-2011-005.165
http://cds.cern.ch/record/1353851
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author Catalan Lasheras, N
author_facet Catalan Lasheras, N
author_sort Catalan Lasheras, N
collection CERN
description After the initial plans in 2007 to run the LHC at 7 TeV, a number of unexpected events, and the extended knowledge of the machine that came after them, have convinced us to gradually reduce the beam energy to the current 3.5 TeV. As a consequence of this, some circuits have been commissioned to different energy levels. Some systems, as the quench protection system, are working at a reduced level of accuracy based on less demanding conditions. Nonconformities that were unacceptable for higher energy have no consequences at the current energy and are thus accepted. In this talk, we will review the current status of commissioning of all the circuits and estimate the time and effort necessary to make all circuits operational at higher energies. All existing nonconformities that need to be solved before increasing the energy will be reviewed and their impact in terms of machine safety and schedule will be assessed. The talk will try to outline a stepped energy increase compatible with the already planned maintenance periods and balanced between physics and commissioning time.
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institution Organización Europea para la Investigación Nuclear
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publisher CERN
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spelling cern-13538512022-08-10T20:25:23Zdoi:10.5170/CERN-2011-005.165http://cds.cern.ch/record/1353851Catalan Lasheras, NWhat needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systemsXXAfter the initial plans in 2007 to run the LHC at 7 TeV, a number of unexpected events, and the extended knowledge of the machine that came after them, have convinced us to gradually reduce the beam energy to the current 3.5 TeV. As a consequence of this, some circuits have been commissioned to different energy levels. Some systems, as the quench protection system, are working at a reduced level of accuracy based on less demanding conditions. Nonconformities that were unacceptable for higher energy have no consequences at the current energy and are thus accepted. In this talk, we will review the current status of commissioning of all the circuits and estimate the time and effort necessary to make all circuits operational at higher energies. All existing nonconformities that need to be solved before increasing the energy will be reviewed and their impact in terms of machine safety and schedule will be assessed. The talk will try to outline a stepped energy increase compatible with the already planned maintenance periods and balanced between physics and commissioning time.CERNoai:cds.cern.ch:13538512011
spellingShingle XX
Catalan Lasheras, N
What needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systems
title What needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systems
title_full What needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systems
title_fullStr What needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systems
title_full_unstemmed What needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systems
title_short What needs to be done to reach beam energy above 3.5 TeV? Commissioning of essential magnet powering and machine protection systems
title_sort what needs to be done to reach beam energy above 3.5 tev? commissioning of essential magnet powering and machine protection systems
topic XX
url https://dx.doi.org/10.5170/CERN-2011-005.165
http://cds.cern.ch/record/1353851
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