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CERN-SPS Wire Scanner Impedance and Wire Heating Studies

This article describes a study performed on one of the CERN-SPS vertical rotational wire scanners in order to investigate the breakage of the wire, which occurred on several occasions during operation in 2012. The thermionic emission current of the wire was measured to evaluate temperature changes,...

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Autores principales: Berrig, OE, Caspers, F, Dehning, B, Emery, J, Hamani, M, Kuczerowski, J, Piselli, E, Salvant, B, Sautier, R, Veness, R, Vollinger, C, Vuitton, C, Zannini, C
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:http://cds.cern.ch/record/1972478
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author Berrig, OE
Caspers, F
Dehning, B
Emery, J
Hamani, M
Kuczerowski, J
Piselli, E
Salvant, B
Sautier, R
Veness, R
Vollinger, C
Vuitton, C
Zannini, C
author_facet Berrig, OE
Caspers, F
Dehning, B
Emery, J
Hamani, M
Kuczerowski, J
Piselli, E
Salvant, B
Sautier, R
Veness, R
Vollinger, C
Vuitton, C
Zannini, C
author_sort Berrig, OE
collection CERN
description This article describes a study performed on one of the CERN-SPS vertical rotational wire scanners in order to investigate the breakage of the wire, which occurred on several occasions during operation in 2012. The thermionic emission current of the wire was measured to evaluate temperature changes, and was observed to rise significantly as the wire approached the ultimate LHC beam in the SPS, indicating the possibility of strong coupling between the beam’s electromagnetic field and the wire. Different laboratory measurements, complemented by CST Microwave Studio simulations, have therefore been performed to try and understand the RF modes responsible for this heating. These results are presented here, along with the subsequent modifications adopted on all of the operational SPS wire scanners.
id cern-1972478
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling cern-19724782019-09-30T06:29:59Zhttp://cds.cern.ch/record/1972478engBerrig, OECaspers, FDehning, BEmery, JHamani, MKuczerowski, JPiselli, ESalvant, BSautier, RVeness, RVollinger, CVuitton, CZannini, CCERN-SPS Wire Scanner Impedance and Wire Heating StudiesAccelerators and Storage RingsAccelerators and Storage RingsThis article describes a study performed on one of the CERN-SPS vertical rotational wire scanners in order to investigate the breakage of the wire, which occurred on several occasions during operation in 2012. The thermionic emission current of the wire was measured to evaluate temperature changes, and was observed to rise significantly as the wire approached the ultimate LHC beam in the SPS, indicating the possibility of strong coupling between the beam’s electromagnetic field and the wire. Different laboratory measurements, complemented by CST Microwave Studio simulations, have therefore been performed to try and understand the RF modes responsible for this heating. These results are presented here, along with the subsequent modifications adopted on all of the operational SPS wire scanners.CERN-BE-2014-006oai:cds.cern.ch:19724782014-09-01
spellingShingle Accelerators and Storage Rings
Accelerators and Storage Rings
Berrig, OE
Caspers, F
Dehning, B
Emery, J
Hamani, M
Kuczerowski, J
Piselli, E
Salvant, B
Sautier, R
Veness, R
Vollinger, C
Vuitton, C
Zannini, C
CERN-SPS Wire Scanner Impedance and Wire Heating Studies
title CERN-SPS Wire Scanner Impedance and Wire Heating Studies
title_full CERN-SPS Wire Scanner Impedance and Wire Heating Studies
title_fullStr CERN-SPS Wire Scanner Impedance and Wire Heating Studies
title_full_unstemmed CERN-SPS Wire Scanner Impedance and Wire Heating Studies
title_short CERN-SPS Wire Scanner Impedance and Wire Heating Studies
title_sort cern-sps wire scanner impedance and wire heating studies
topic Accelerators and Storage Rings
Accelerators and Storage Rings
url http://cds.cern.ch/record/1972478
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