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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...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
2020
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1002/adem.201900927 http://cds.cern.ch/record/2815863 |
_version_ | 1780973549202178048 |
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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 |
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