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The LHC Beam Loss Measurement System

<p align="justify">An unprecedented amount of energy will be stored in the circulating beams of LHC. The loss of even a very small fraction of a beam may induce a quench in the superconducting magnets or cause physical damage to machine components. A fast (one turn) loss of 3<sup&...

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Autores principales: Dehning, B, Effinger, E, Emery, J, Ferioli, G, Guaglio, G, Holzer, E B, Kramer, Daniel, Ponce, L, Prieto, V, Stockner, M, Zamantzas, C
Lenguaje:eng
Publicado: 2007
Materias:
Acceso en línea:http://cds.cern.ch/record/1057235
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author Dehning, B
Effinger, E
Emery, J
Ferioli, G
Guaglio, G
Holzer, E B
Kramer, Daniel
Ponce, L
Prieto, V
Stockner, M
Zamantzas, C
author_facet Dehning, B
Effinger, E
Emery, J
Ferioli, G
Guaglio, G
Holzer, E B
Kramer, Daniel
Ponce, L
Prieto, V
Stockner, M
Zamantzas, C
author_sort Dehning, B
collection CERN
description <p align="justify">An unprecedented amount of energy will be stored in the circulating beams of LHC. The loss of even a very small fraction of a beam may induce a quench in the superconducting magnets or cause physical damage to machine components. A fast (one turn) loss of 3<sup><b> . </b></sup>10<sup>-9</sup> and a constant loss of 3<sup><b> . </b></sup>10<sup>-12</sup> times the nominal beam intensity can quench a dipole magnet. A fast loss of 3<sup><b> . </b></sup>10<sup>-6</sup> times nominal beam intensity can damage a magnet. The stored energy in the LHC beam is a factor of 200 (or more) higher than in existing hadron machines with superconducting magnets (HERA, TEVATRON, RHIC), while the quench levels of the LHC magnets are a factor of about 5 to 20 lower than the quench levels of these machines. To comply with these requirements the detectors, ionisation chambers and secondary emission monitors are designed very reliable with a large operational range. Several stages of the acquisition chain are doubled and frequent functionality tests are automatically executed. The failure probabilities of single components were identified and optimised. First measurements show the large dynamic range of the system.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
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spelling cern-10572352023-05-31T13:24:38Zhttp://cds.cern.ch/record/1057235engDehning, BEffinger, EEmery, JFerioli, GGuaglio, GHolzer, E BKramer, DanielPonce, LPrieto, VStockner, MZamantzas, CThe LHC Beam Loss Measurement SystemAccelerators and Storage Rings<p align="justify">An unprecedented amount of energy will be stored in the circulating beams of LHC. The loss of even a very small fraction of a beam may induce a quench in the superconducting magnets or cause physical damage to machine components. A fast (one turn) loss of 3<sup><b> . </b></sup>10<sup>-9</sup> and a constant loss of 3<sup><b> . </b></sup>10<sup>-12</sup> times the nominal beam intensity can quench a dipole magnet. A fast loss of 3<sup><b> . </b></sup>10<sup>-6</sup> times nominal beam intensity can damage a magnet. The stored energy in the LHC beam is a factor of 200 (or more) higher than in existing hadron machines with superconducting magnets (HERA, TEVATRON, RHIC), while the quench levels of the LHC magnets are a factor of about 5 to 20 lower than the quench levels of these machines. To comply with these requirements the detectors, ionisation chambers and secondary emission monitors are designed very reliable with a large operational range. Several stages of the acquisition chain are doubled and frequent functionality tests are automatically executed. The failure probabilities of single components were identified and optimised. First measurements show the large dynamic range of the system.LHC-PROJECT-Report-1025CERN-LHC-PROJECT-Report-1025oai:cds.cern.ch:10572352007
spellingShingle Accelerators and Storage Rings
Dehning, B
Effinger, E
Emery, J
Ferioli, G
Guaglio, G
Holzer, E B
Kramer, Daniel
Ponce, L
Prieto, V
Stockner, M
Zamantzas, C
The LHC Beam Loss Measurement System
title The LHC Beam Loss Measurement System
title_full The LHC Beam Loss Measurement System
title_fullStr The LHC Beam Loss Measurement System
title_full_unstemmed The LHC Beam Loss Measurement System
title_short The LHC Beam Loss Measurement System
title_sort lhc beam loss measurement system
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1057235
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