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Generation of 1.5 Million Beam Loss Threshold Values
CERN's Large Hadron Collider will store an unprecedented amount of energy in its circulating beams. Beamloss monitoring (BLM) is, therefore, critical for machine protection. It must protect against the consequences (equipment damage, quenches of superconducting magnets) of excessive beam loss....
Autores principales: | , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2008
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/1124306 |
_version_ | 1780914671116615680 |
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author | Holzer, E B Bocian, D Böhlen, T T Dehning, B Kramer, Daniel Ponce, L Priebe, A Sapinski, M Stockner, M |
author_facet | Holzer, E B Bocian, D Böhlen, T T Dehning, B Kramer, Daniel Ponce, L Priebe, A Sapinski, M Stockner, M |
author_sort | Holzer, E B |
collection | CERN |
description | CERN's Large Hadron Collider will store an unprecedented amount of energy in its circulating beams. Beamloss monitoring (BLM) is, therefore, critical for machine protection. It must protect against the consequences (equipment damage, quenches of superconducting magnets) of excessive beam loss. About 4000 monitors will be installed at critical loss locations. Each monitor has 384 beam abort thresholds associated; for 12 integrated loss durations ($40\mu$s to 83 s) and 32 energies (450GeV to 7 TeV). Depending on monitor location, the thresholds vary by orders of magnitude. For simplification, the monitors are grouped in 'families'. Monitors of one family protect similar magnets against equivalent loss scenarios. Therefore, they are given the same thresholds. The start-up calibration of the BLM system is required to be within a factor of five in accuracy; and the final accuracy should be a factor of two. Simulations (backed-up by control measurements) determine the relation between the BLM signal, the deposited energy and the critical energy deposition for damage or quench (temperature of the coil). The paper presents the strategy of determining 1.5 million threshold values. |
id | cern-1124306 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2008 |
record_format | invenio |
spelling | cern-11243062023-05-31T13:24:12Zhttp://cds.cern.ch/record/1124306engHolzer, E BBocian, DBöhlen, T TDehning, BKramer, DanielPonce, LPriebe, ASapinski, MStockner, MGeneration of 1.5 Million Beam Loss Threshold ValuesAccelerators and Storage RingsCERN's Large Hadron Collider will store an unprecedented amount of energy in its circulating beams. Beamloss monitoring (BLM) is, therefore, critical for machine protection. It must protect against the consequences (equipment damage, quenches of superconducting magnets) of excessive beam loss. About 4000 monitors will be installed at critical loss locations. Each monitor has 384 beam abort thresholds associated; for 12 integrated loss durations ($40\mu$s to 83 s) and 32 energies (450GeV to 7 TeV). Depending on monitor location, the thresholds vary by orders of magnitude. For simplification, the monitors are grouped in 'families'. Monitors of one family protect similar magnets against equivalent loss scenarios. Therefore, they are given the same thresholds. The start-up calibration of the BLM system is required to be within a factor of five in accuracy; and the final accuracy should be a factor of two. Simulations (backed-up by control measurements) determine the relation between the BLM signal, the deposited energy and the critical energy deposition for damage or quench (temperature of the coil). The paper presents the strategy of determining 1.5 million threshold values.LHC-PROJECT-Report-1158CERN-LHC-PROJECT-Report-1158oai:cds.cern.ch:11243062008-09-05 |
spellingShingle | Accelerators and Storage Rings Holzer, E B Bocian, D Böhlen, T T Dehning, B Kramer, Daniel Ponce, L Priebe, A Sapinski, M Stockner, M Generation of 1.5 Million Beam Loss Threshold Values |
title | Generation of 1.5 Million Beam Loss Threshold Values |
title_full | Generation of 1.5 Million Beam Loss Threshold Values |
title_fullStr | Generation of 1.5 Million Beam Loss Threshold Values |
title_full_unstemmed | Generation of 1.5 Million Beam Loss Threshold Values |
title_short | Generation of 1.5 Million Beam Loss Threshold Values |
title_sort | generation of 1.5 million beam loss threshold values |
topic | Accelerators and Storage Rings |
url | http://cds.cern.ch/record/1124306 |
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