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Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC
The ATLAS experiment will undergo around the year 2025 a replacement of the tracker system in view of the high luminosity phase of the LHC (HL-LHC) with a new 5-layer pixel system. Thin planar pixel sensors are promising candidates to instrument the innermost region of the new pixel system, thanks t...
Autores principales: | , , , , |
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Formato: | info:eu-repo/semantics/article |
Lenguaje: | eng |
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JINST
2017
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1088/1748-0221/12/01/C01024 http://cds.cern.ch/record/2243467 |
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author | Macchiolo, Anna Beyer, Julien La Rosa, Alessandro Nisius, Richard Savic, Natascha |
author_facet | Macchiolo, Anna Beyer, Julien La Rosa, Alessandro Nisius, Richard Savic, Natascha |
author_sort | Macchiolo, Anna |
collection | CERN |
description | The ATLAS experiment will undergo around the year 2025 a replacement of the tracker system in view of the high luminosity phase of the LHC (HL-LHC) with a new 5-layer pixel system. Thin planar pixel sensors are promising candidates to instrument the innermost region of the new pixel system, thanks to the reduced contribution to the material budget and their high charge collection efficiency after irradiation. The sensors of 50-150 μm thickness, interconnected to FE-I4 read-out chips, have been characterized with radioactive sources and beam tests. In particular active edge sensors have been investigated. The performance of two different versions of edge designs are compared: the first with a bias ring, and the second one where only a floating guard ring has been implemented. The hit efficiency at the edge has also been studied after irradiation at a fluence of 10(15) n(eq)/cm(2). Highly segmented sensors will represent a challenge for the tracking in the forward region of the pixel system at HL-LHC. In order to reproduce the performance of 50x50 μm(2) pixels at high pseudo-rapidity values, FE-I4 compatible planar pixel sensors have been studied before and after irradiation in beam tests at high incidence angles with respect to the short pixel direction. Results on the hit efficiency in this configuration are discussed for different sensor thicknesses. |
format | info:eu-repo/semantics/article |
id | cern-2243467 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2017 |
publisher | JINST |
record_format | invenio |
spelling | cern-22434672023-03-14T17:38:18Z doi:10.1088/1748-0221/12/01/C01024 http://cds.cern.ch/record/2243467 eng Macchiolo, Anna Beyer, Julien La Rosa, Alessandro Nisius, Richard Savic, Natascha Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC physics.ins-det Detectors and Experimental Techniques 7: Advanced hybrid pixel detectors The ATLAS experiment will undergo around the year 2025 a replacement of the tracker system in view of the high luminosity phase of the LHC (HL-LHC) with a new 5-layer pixel system. Thin planar pixel sensors are promising candidates to instrument the innermost region of the new pixel system, thanks to the reduced contribution to the material budget and their high charge collection efficiency after irradiation. The sensors of 50-150 μm thickness, interconnected to FE-I4 read-out chips, have been characterized with radioactive sources and beam tests. In particular active edge sensors have been investigated. The performance of two different versions of edge designs are compared: the first with a bias ring, and the second one where only a floating guard ring has been implemented. The hit efficiency at the edge has also been studied after irradiation at a fluence of 10(15) n(eq)/cm(2). Highly segmented sensors will represent a challenge for the tracking in the forward region of the pixel system at HL-LHC. In order to reproduce the performance of 50x50 μm(2) pixels at high pseudo-rapidity values, FE-I4 compatible planar pixel sensors have been studied before and after irradiation in beam tests at high incidence angles with respect to the short pixel direction. Results on the hit efficiency in this configuration are discussed for different sensor thicknesses. The ATLAS experiment will undergo around the year 2025 a replacement of the tracker system in view of the high luminosity phase of the LHC (HL-LHC) with a new 5-layer pixel system. Thin planar pixel sensors are promising candidates to instrument the innermost region of the new pixel system, thanks to the reduced contribution to the material budget and their high charge collection efficiency after irradiation. The sensors of 50-150 $\mu$m thickness, interconnected to FE-I4 read-out chips, have been characterized with radioactive sources and beam tests. In particular active edge sensors have been investigated. The performance of two different versions of edge designs are compared: the first with a bias ring, and the second one where only a floating guard ring has been implemented. The hit efficiency at the edge has also been studied after irradiation at a fluence of $10^{15}$ \neqcm. Highly segmented sensors will represent a challenge for the tracking in the forward region of the pixel system at HL-LHC. In order to reproduce the performance of 50x50 $\mu$m$^2$ pixels at high pseudo-rapidity values, FE-I4 compatible planar pixel sensors have been studied before and after irradiation in beam tests at high incidence angles with respect to the short pixel direction. Results on the hit efficiency in this configuration are discussed for different sensor thicknesses. info:eu-repo/grantAgreement/EC/FP7/654168 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/2243467 JINST JINST, 01 (2017) pp. C01024 2017-01-12 |
spellingShingle | physics.ins-det Detectors and Experimental Techniques 7: Advanced hybrid pixel detectors Macchiolo, Anna Beyer, Julien La Rosa, Alessandro Nisius, Richard Savic, Natascha Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC |
title | Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC |
title_full | Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC |
title_fullStr | Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC |
title_full_unstemmed | Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC |
title_short | Optimization of thin n-in-p planar pixel modules for the ATLAS upgrade at HL-LHC |
title_sort | optimization of thin n-in-p planar pixel modules for the atlas upgrade at hl-lhc |
topic | physics.ins-det Detectors and Experimental Techniques 7: Advanced hybrid pixel detectors |
url | https://dx.doi.org/10.1088/1748-0221/12/01/C01024 http://cds.cern.ch/record/2243467 http://cds.cern.ch/record/2243467 |
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