Vacuum studies with a VELO module

LHCb VELO modules will be operated in low vacuum with voltages as high as 500~V on both hybrids of the module. This note provides the first study on the breakdown voltages of a pre-production VELO module with varying pressures and venting with air. The breakdown voltages are measured by studying the...

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Detalles Bibliográficos
Autores principales: Bates, A, Marinho, F, Parkes, C, Saavedra, A
Lenguaje:eng
Publicado: 2007
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1046812
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author Bates, A
Marinho, F
Parkes, C
Saavedra, A
author_facet Bates, A
Marinho, F
Parkes, C
Saavedra, A
author_sort Bates, A
collection CERN
description LHCb VELO modules will be operated in low vacuum with voltages as high as 500~V on both hybrids of the module. This note provides the first study on the breakdown voltages of a pre-production VELO module with varying pressures and venting with air. The breakdown voltages are measured by studying the leakage currents of the sensors on the module and the measured breakdown curve is compared to the theoretical breakdown for a parallel plate capacitor. The effect of breakdown on the noise of the sensors is also studied. It is concluded that the modules should not be operated at voltages above 500~V over a pressure range of 0.1-760~Torr.
id cern-1046812
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10468122019-09-30T06:29:59Zhttp://cds.cern.ch/record/1046812engBates, AMarinho, FParkes, CSaavedra, AVacuum studies with a VELO moduleDetectors and Experimental TechniquesLHCb VELO modules will be operated in low vacuum with voltages as high as 500~V on both hybrids of the module. This note provides the first study on the breakdown voltages of a pre-production VELO module with varying pressures and venting with air. The breakdown voltages are measured by studying the leakage currents of the sensors on the module and the measured breakdown curve is compared to the theoretical breakdown for a parallel plate capacitor. The effect of breakdown on the noise of the sensors is also studied. It is concluded that the modules should not be operated at voltages above 500~V over a pressure range of 0.1-760~Torr.LHCb-2007-104CERN-LHCb-2007-104oai:cds.cern.ch:10468122007-07-16
spellingShingle Detectors and Experimental Techniques
Bates, A
Marinho, F
Parkes, C
Saavedra, A
Vacuum studies with a VELO module
title Vacuum studies with a VELO module
title_full Vacuum studies with a VELO module
title_fullStr Vacuum studies with a VELO module
title_full_unstemmed Vacuum studies with a VELO module
title_short Vacuum studies with a VELO module
title_sort vacuum studies with a velo module
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1046812
work_keys_str_mv AT batesa vacuumstudieswithavelomodule
AT marinhof vacuumstudieswithavelomodule
AT parkesc vacuumstudieswithavelomodule
AT saavedraa vacuumstudieswithavelomodule

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