Technical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam Screen

The shielded pair resonator technique is used to measure the surface resistance of the copper coated LHC beam screen both at room temperature and at cryogenic temperature with a strong magnetic field up to several Teslas, like in the LHC superconducting magnets. From its concept, the RF-based measur...

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Detalles Bibliográficos
Autor principal: Tan, J
Lenguaje:eng
Publicado: 2000
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/426232
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author Tan, J
author_facet Tan, J
author_sort Tan, J
collection CERN
description The shielded pair resonator technique is used to measure the surface resistance of the copper coated LHC beam screen both at room temperature and at cryogenic temperature with a strong magnetic field up to several Teslas, like in the LHC superconducting magnets. From its concept, the RF-based measurements principle appears to be straight forward, but it turns out in practice to be very sensitive to a large number of parameters which are being described in the present report. Some practical hints are proposed to overcome these technical hitches and optimize the geometry as well. An estimate of the thermal load of the LHC beam screen is given, standing in the range 200-250 mW/m for two circulating beams.
id cern-426232
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-4262322023-05-05T13:07:47Zhttp://cds.cern.ch/record/426232engTan, JTechnical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam ScreenAccelerators and Storage RingsThe shielded pair resonator technique is used to measure the surface resistance of the copper coated LHC beam screen both at room temperature and at cryogenic temperature with a strong magnetic field up to several Teslas, like in the LHC superconducting magnets. From its concept, the RF-based measurements principle appears to be straight forward, but it turns out in practice to be very sensitive to a large number of parameters which are being described in the present report. Some practical hints are proposed to overcome these technical hitches and optimize the geometry as well. An estimate of the thermal load of the LHC beam screen is given, standing in the range 200-250 mW/m for two circulating beams.CERN-SL-2000-002-APoai:cds.cern.ch:4262322000-01-19
spellingShingle Accelerators and Storage Rings
Tan, J
Technical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam Screen
title Technical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam Screen
title_full Technical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam Screen
title_fullStr Technical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam Screen
title_full_unstemmed Technical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam Screen
title_short Technical and Practical Information on the Surface Resistance Measurement Bench Using the Shielded Pair Method: Application to the LHC Beam Screen
title_sort technical and practical information on the surface resistance measurement bench using the shielded pair method: application to the lhc beam screen
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/426232
work_keys_str_mv AT tanj technicalandpracticalinformationonthesurfaceresistancemeasurementbenchusingtheshieldedpairmethodapplicationtothelhcbeamscreen

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