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Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade

The Mighty Tracker is a proposed upgrade to the downstream tracking system of LHCb for operations at luminosities of up to 1.5 × 10$^{34}$ cm$^{−2}$ s$^{−1}$ starting with the LHC Run 5 data taking period. It foresees the replacement of the most central area of the current scintillating fibre tracke...

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Autor principal: Hammerich, J
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/17/10/C10005
http://cds.cern.ch/record/2859798
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author Hammerich, J
author_facet Hammerich, J
author_sort Hammerich, J
collection CERN
description The Mighty Tracker is a proposed upgrade to the downstream tracking system of LHCb for operations at luminosities of up to 1.5 × 10$^{34}$ cm$^{−2}$ s$^{−1}$ starting with the LHC Run 5 data taking period. It foresees the replacement of the most central area of the current scintillating fibre tracker with High Voltage CMOS (HV-CMOS) pixel sensors. Due to the increased luminosity, occupancy will be too high for track reconstruction in the fibre tracker and the fibres would no longer withstand the radiation damage. HV-CMOS sensors have demonstrated a significant radiation tolerance and good performance making them an ideal choice of technology for the LHCb experiment. Monolithic Active Pixel Sensors (MAPS) fabricated in HV-CMOS processes provide fast charge collection via drift and allow the implementation of the readout on the same die as the sensitive volume. Due to the use of commercial processes, these sensors can be fabricated at low cost as no hybridisation with bump bonds is required. Since they are not fully depleted, the inactive volume can be reduced by thinning to achieve a total die thickness of 50 to 100 microns. A dedicated sensor called the MightyPix is developed for this programme. It is based on the HV-MAPS families MuPix and ATLASPix and tailored to the requirements of LHCb. To demonstrate the feasibility of this technology for the LHCb environment, prototypes have been irradiated. These sensors are tested in terms of efficiency, time resolution and power dissipation in temperature controlled environments.
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spelling cern-28597982023-06-06T09:25:10Zdoi:10.1088/1748-0221/17/10/C10005http://cds.cern.ch/record/2859798engHammerich, JTowards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgradeDetectors and Experimental TechniquesThe Mighty Tracker is a proposed upgrade to the downstream tracking system of LHCb for operations at luminosities of up to 1.5 × 10$^{34}$ cm$^{−2}$ s$^{−1}$ starting with the LHC Run 5 data taking period. It foresees the replacement of the most central area of the current scintillating fibre tracker with High Voltage CMOS (HV-CMOS) pixel sensors. Due to the increased luminosity, occupancy will be too high for track reconstruction in the fibre tracker and the fibres would no longer withstand the radiation damage. HV-CMOS sensors have demonstrated a significant radiation tolerance and good performance making them an ideal choice of technology for the LHCb experiment. Monolithic Active Pixel Sensors (MAPS) fabricated in HV-CMOS processes provide fast charge collection via drift and allow the implementation of the readout on the same die as the sensitive volume. Due to the use of commercial processes, these sensors can be fabricated at low cost as no hybridisation with bump bonds is required. Since they are not fully depleted, the inactive volume can be reduced by thinning to achieve a total die thickness of 50 to 100 microns. A dedicated sensor called the MightyPix is developed for this programme. It is based on the HV-MAPS families MuPix and ATLASPix and tailored to the requirements of LHCb. To demonstrate the feasibility of this technology for the LHCb environment, prototypes have been irradiated. These sensors are tested in terms of efficiency, time resolution and power dissipation in temperature controlled environments.oai:cds.cern.ch:28597982022
spellingShingle Detectors and Experimental Techniques
Hammerich, J
Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade
title Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade
title_full Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade
title_fullStr Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade
title_full_unstemmed Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade
title_short Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade
title_sort towards mightypix, an hv-maps for the lhcb mighty tracker upgrade
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1088/1748-0221/17/10/C10005
http://cds.cern.ch/record/2859798
work_keys_str_mv AT hammerichj towardsmightypixanhvmapsforthelhcbmightytrackerupgrade