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Investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detector
Central to the design of any detector system is a detailed understanding of the current and power dissipation due to the implications on power supply design, thermal management and mechanical stability. It is well documented that certain 130-nm CMOS technologies exhibit an increase in the leakage cu...
Autores principales: | , |
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Lenguaje: | eng |
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2018
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/2644358 |
_version_ | 1780960377867075584 |
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author | Woelker, Ricardo Sawyer, Craig |
author_facet | Woelker, Ricardo Sawyer, Craig |
author_sort | Woelker, Ricardo |
collection | CERN |
description | Central to the design of any detector system is a detailed understanding of the current and power dissipation due to the implications on power supply design, thermal management and mechanical stability. It is well documented that certain 130-nm CMOS technologies exhibit an increase in the leakage current when exposed to ionising radiation. Such 130-nm technology is employed in the readout ASICs of the ATLAS ITk Strip Tracker Upgrade. Using the so-called $\textit{ABC130}$ prototype chipset, measurements are presented which allow the parametrisation of the increase in current as a function of dose rate in the region of phase space most applicable to High-Luminosity LHC conditions. Studies investigating the batch-by-batch, chip-by-chip and wafer-by-wafer variation of the total current increase are presented which demonstrate a significant batch-by-batch variation alongside non-negligible variations within wafers. Furthermore, studies are shown investigating the long-term annealing of irradiated chips (up to four months storing chips at 80$~^\circ$C). Finally, the feasibility of pre-irradiating wafers to mitigate the current increase is demonstrated. |
id | cern-2644358 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2018 |
record_format | invenio |
spelling | cern-26443582022-01-14T15:04:42Zhttp://cds.cern.ch/record/2644358engWoelker, RicardoSawyer, CraigInvestigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detectorParticle Physics - ExperimentCentral to the design of any detector system is a detailed understanding of the current and power dissipation due to the implications on power supply design, thermal management and mechanical stability. It is well documented that certain 130-nm CMOS technologies exhibit an increase in the leakage current when exposed to ionising radiation. Such 130-nm technology is employed in the readout ASICs of the ATLAS ITk Strip Tracker Upgrade. Using the so-called $\textit{ABC130}$ prototype chipset, measurements are presented which allow the parametrisation of the increase in current as a function of dose rate in the region of phase space most applicable to High-Luminosity LHC conditions. Studies investigating the batch-by-batch, chip-by-chip and wafer-by-wafer variation of the total current increase are presented which demonstrate a significant batch-by-batch variation alongside non-negligible variations within wafers. Furthermore, studies are shown investigating the long-term annealing of irradiated chips (up to four months storing chips at 80$~^\circ$C). Finally, the feasibility of pre-irradiating wafers to mitigate the current increase is demonstrated.ATL-ITK-PROC-2018-015oai:cds.cern.ch:26443582018-10-22 |
spellingShingle | Particle Physics - Experiment Woelker, Ricardo Sawyer, Craig Investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detector |
title | Investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detector |
title_full | Investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detector |
title_fullStr | Investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detector |
title_full_unstemmed | Investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detector |
title_short | Investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the ATLAS ITk strip detector |
title_sort | investigations into the effect of gamma irradiation on the leakage current of 130-nm readout chips for the atlas itk strip detector |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2644358 |
work_keys_str_mv | AT woelkerricardo investigationsintotheeffectofgammairradiationontheleakagecurrentof130nmreadoutchipsfortheatlasitkstripdetector AT sawyercraig investigationsintotheeffectofgammairradiationontheleakagecurrentof130nmreadoutchipsfortheatlasitkstripdetector |