FEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo Goniometer

The UA9 piezo-goniometer has been designed to guarantee micro-radians-accuracy angular positioning of a silicon crystal for a crystal collimation experiment in the LHC, and to minimize the impact on the LHC beam coupling impedance. This paper presents a Finite Element Method (FEM) study of the devic...

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Detalles Bibliográficos
Autores principales: Danisi, A, Zannini, C, Passarelli, A, Masi, A, Losito, R, Salvant, B
Lenguaje:eng
Publicado: 2014
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1749085
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author Danisi, A
Zannini, C
Passarelli, A
Masi, A
Losito, R
Salvant, B
author_facet Danisi, A
Zannini, C
Passarelli, A
Masi, A
Losito, R
Salvant, B
author_sort Danisi, A
collection CERN
description The UA9 piezo-goniometer has been designed to guarantee micro-radians-accuracy angular positioning of a silicon crystal for a crystal collimation experiment in the LHC, and to minimize the impact on the LHC beam coupling impedance. This paper presents a Finite Element Method (FEM) study of the device, in both parking and operational positions, to evaluate its impact on the LHC impedance budget. In addition, the shielding contribution of the RF gaskets has been carefully evaluated, with the objective to assess the consequences for operation in case of their failure. A final word is drawn on the overall device impedance criticality.
id cern-1749085
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling cern-17490852022-08-17T13:24:50Zhttp://cds.cern.ch/record/1749085engDanisi, AZannini, CPassarelli, AMasi, ALosito, RSalvant, BFEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo GoniometerAccelerators and Storage RingsThe UA9 piezo-goniometer has been designed to guarantee micro-radians-accuracy angular positioning of a silicon crystal for a crystal collimation experiment in the LHC, and to minimize the impact on the LHC beam coupling impedance. This paper presents a Finite Element Method (FEM) study of the device, in both parking and operational positions, to evaluate its impact on the LHC impedance budget. In addition, the shielding contribution of the RF gaskets has been carefully evaluated, with the objective to assess the consequences for operation in case of their failure. A final word is drawn on the overall device impedance criticality.CERN-ACC-2014-0192oai:cds.cern.ch:17490852014-06-01
spellingShingle Accelerators and Storage Rings
Danisi, A
Zannini, C
Passarelli, A
Masi, A
Losito, R
Salvant, B
FEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo Goniometer
title FEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo Goniometer
title_full FEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo Goniometer
title_fullStr FEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo Goniometer
title_full_unstemmed FEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo Goniometer
title_short FEM Analysis of Beam-coupling Impedance and RF Contacts Criticality on the LHC UA9 Piezo Goniometer
title_sort fem analysis of beam-coupling impedance and rf contacts criticality on the lhc ua9 piezo goniometer
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1749085
work_keys_str_mv AT danisia femanalysisofbeamcouplingimpedanceandrfcontactscriticalityonthelhcua9piezogoniometer
AT zanninic femanalysisofbeamcouplingimpedanceandrfcontactscriticalityonthelhcua9piezogoniometer
AT passarellia femanalysisofbeamcouplingimpedanceandrfcontactscriticalityonthelhcua9piezogoniometer
AT masia femanalysisofbeamcouplingimpedanceandrfcontactscriticalityonthelhcua9piezogoniometer
AT lositor femanalysisofbeamcouplingimpedanceandrfcontactscriticalityonthelhcua9piezogoniometer
AT salvantb femanalysisofbeamcouplingimpedanceandrfcontactscriticalityonthelhcua9piezogoniometer

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