Detecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound Measurements

The 360 MJ stored energy of the 7 TeV LHC beams can seriously damage the beam line elements in case of accidental beam losses. Notably, the collimators will sit at 6 to 7 sigmas from the beam centre (1.2 to 1.4 mm) and will be hit and possibly damaged in case of failures, with a consequent degradati...

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Detalles Bibliográficos
Autores principales: Redaelli, Stefano, Aberle, Oliver, Assmann, R W, Masi, Alessandro, Spiezia, Giovanni
Lenguaje:eng
Publicado: 2005
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/872261
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author Redaelli, Stefano
Aberle, Oliver
Assmann, R W
Masi, Alessandro
Spiezia, Giovanni
author_facet Redaelli, Stefano
Aberle, Oliver
Assmann, R W
Masi, Alessandro
Spiezia, Giovanni
author_sort Redaelli, Stefano
collection CERN
description The 360 MJ stored energy of the 7 TeV LHC beams can seriously damage the beam line elements in case of accidental beam losses. Notably, the collimators will sit at 6 to 7 sigmas from the beam centre (1.2 to 1.4 mm) and will be hit and possibly damaged in case of failures, with a consequent degradation of the cleaning performance of the overall collimation system. The experience from operating machines shows that an a-posteriori identification of the damaged collimators from the observed performance degradation is extremely challenging. Collimator tests with beam at the SPS have shown that the impact of 450 GeV proton beams at intensities from 1010to 3x1013 could be detected by measuring sound and vibrations induced by the impacting beams.
id cern-872261
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
record_format invenio
spelling cern-8722612023-05-31T13:24:23Zhttp://cds.cern.ch/record/872261engRedaelli, StefanoAberle, OliverAssmann, R WMasi, AlessandroSpiezia, GiovanniDetecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound MeasurementsAccelerators and Storage RingsThe 360 MJ stored energy of the 7 TeV LHC beams can seriously damage the beam line elements in case of accidental beam losses. Notably, the collimators will sit at 6 to 7 sigmas from the beam centre (1.2 to 1.4 mm) and will be hit and possibly damaged in case of failures, with a consequent degradation of the cleaning performance of the overall collimation system. The experience from operating machines shows that an a-posteriori identification of the damaged collimators from the observed performance degradation is extremely challenging. Collimator tests with beam at the SPS have shown that the impact of 450 GeV proton beams at intensities from 1010to 3x1013 could be detected by measuring sound and vibrations induced by the impacting beams.LHC-Project-Report-843CERN-LHC-Project-Report-843oai:cds.cern.ch:8722612005-08-09
spellingShingle Accelerators and Storage Rings
Redaelli, Stefano
Aberle, Oliver
Assmann, R W
Masi, Alessandro
Spiezia, Giovanni
Detecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound Measurements
title Detecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound Measurements
title_full Detecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound Measurements
title_fullStr Detecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound Measurements
title_full_unstemmed Detecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound Measurements
title_short Detecting Impacts of Proton Beams on the LHC Collimators With Vibration and Sound Measurements
title_sort detecting impacts of proton beams on the lhc collimators with vibration and sound measurements
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/872261
work_keys_str_mv AT redaellistefano detectingimpactsofprotonbeamsonthelhccollimatorswithvibrationandsoundmeasurements
AT aberleoliver detectingimpactsofprotonbeamsonthelhccollimatorswithvibrationandsoundmeasurements
AT assmannrw detectingimpactsofprotonbeamsonthelhccollimatorswithvibrationandsoundmeasurements
AT masialessandro detectingimpactsofprotonbeamsonthelhccollimatorswithvibrationandsoundmeasurements
AT spieziagiovanni detectingimpactsofprotonbeamsonthelhccollimatorswithvibrationandsoundmeasurements

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