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Wire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection Problem

The transverse distribution of particles in the hadron beam of the Large HadronCollider (LHC) is measured using wire scanners that pass a thin wire through thehadron beam and detect scattered radiation. Increasing demands on beaminstrumentation in the LHC leads one to consider the choice of material...

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Detalles Bibliográficos
Autores principales: Bigland, Hal, Huber, John E, Veness, Raymond, Cocks, Alan C F
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1002/adem.201900927
http://cds.cern.ch/record/2815863
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author Bigland, Hal
Huber, John E
Veness, Raymond
Cocks, Alan C F
author_facet Bigland, Hal
Huber, John E
Veness, Raymond
Cocks, Alan C F
author_sort Bigland, Hal
collection CERN
description The transverse distribution of particles in the hadron beam of the Large HadronCollider (LHC) is measured using wire scanners that pass a thin wire through thehadron beam and detect scattered radiation. Increasing demands on beaminstrumentation in the LHC leads one to consider the choice of material for thewire. Here, it is shown that this material choice depends on thermal, mechanical,and radiation scattering properties. Simple analytical models are used to developan Ashby material index for the design problem. It is confirmed that carbonfibers,currently used in several scanners, are high-performing materials for thisapplication. The key compromises in the material choice are identified. Notably,thermal conductivity and emissivity are relatively unimportant, whereas heatcapacity, tolerance of high temperature, and mechanical strength dominate thematerial index. Potential competitor materials are identified, along with directionsto pursue for performance enhancement.
id cern-2815863
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
record_format invenio
spelling cern-28158632022-07-15T20:49:06Zdoi:10.1002/adem.201900927http://cds.cern.ch/record/2815863engBigland, HalHuber, John EVeness, RaymondCocks, Alan C FWire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection ProblemDetectors and Experimental TechniquesThe transverse distribution of particles in the hadron beam of the Large HadronCollider (LHC) is measured using wire scanners that pass a thin wire through thehadron beam and detect scattered radiation. Increasing demands on beaminstrumentation in the LHC leads one to consider the choice of material for thewire. Here, it is shown that this material choice depends on thermal, mechanical,and radiation scattering properties. Simple analytical models are used to developan Ashby material index for the design problem. It is confirmed that carbonfibers,currently used in several scanners, are high-performing materials for thisapplication. The key compromises in the material choice are identified. Notably,thermal conductivity and emissivity are relatively unimportant, whereas heatcapacity, tolerance of high temperature, and mechanical strength dominate thematerial index. Potential competitor materials are identified, along with directionsto pursue for performance enhancement.oai:cds.cern.ch:28158632020
spellingShingle Detectors and Experimental Techniques
Bigland, Hal
Huber, John E
Veness, Raymond
Cocks, Alan C F
Wire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection Problem
title Wire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection Problem
title_full Wire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection Problem
title_fullStr Wire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection Problem
title_full_unstemmed Wire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection Problem
title_short Wire Materials for Scanners in the Large Hadron Collider: An Unusual Materials Selection Problem
title_sort wire materials for scanners in the large hadron collider: an unusual materials selection problem
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1002/adem.201900927
http://cds.cern.ch/record/2815863
work_keys_str_mv AT biglandhal wirematerialsforscannersinthelargehadroncollideranunusualmaterialsselectionproblem
AT huberjohne wirematerialsforscannersinthelargehadroncollideranunusualmaterialsselectionproblem
AT venessraymond wirematerialsforscannersinthelargehadroncollideranunusualmaterialsselectionproblem
AT cocksalancf wirematerialsforscannersinthelargehadroncollideranunusualmaterialsselectionproblem