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Processing of Radiation Hard Particle Detectors on Czochralski Silicon

The purpose of this work was to study the radiation hardness of particle detectors. Silicon detectors are cost-effective andhave an excellent spatial resolution. Therefore, they are widely used in many high-energy physics experiments. It is knownthat oxygen improves the radiation hardness of silicon...

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Autor principal: Tuovinen, Esa
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1446570
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author Tuovinen, Esa
author_facet Tuovinen, Esa
author_sort Tuovinen, Esa
collection CERN
description The purpose of this work was to study the radiation hardness of particle detectors. Silicon detectors are cost-effective andhave an excellent spatial resolution. Therefore, they are widely used in many high-energy physics experiments. It is knownthat oxygen improves the radiation hardness of silicon detectors. The natural way to have a high concentration of oxygen insilicon is to use magnetic Czochralski silicon (MCz-Si). MCz-Si has intrinsically a relatively uniform and high level ofoxygen (5x10^17 cm^3) compared to regular float-zone silicon (FZ-Si). Such a level is hard to attain with other methods,namely the diffusion oxygenation of float-zone silicon.In the Large Hadron Collider (LHC) and its potential upgrade, the luminosity and the fluencies of fast hadrons can be sohigh that detectors made of standard detector-grade FZ-Si might not survive the planned operating period. MCz-Si offers animprovement to the lifetime of particle detectors through improved radiation hardness.This thesis takes a process-oriented view of the potential of the MCz-Si material. The processing of radiation detectors onMCz-Si is described, the process is characterized from the process point of view, and the radiation hardness is studied afterirradiations. There is also an emphasis on the intentional introduction of thermal donors (TDs) in high-resistivity MCz-Simaterial, and specifically on their potential in p-type MCz-Si detectors.
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institution Organización Europea para la Investigación Nuclear
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publishDate 2012
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spelling cern-14465702019-09-30T06:29:59Zhttp://cds.cern.ch/record/1446570engTuovinen, EsaProcessing of Radiation Hard Particle Detectors on Czochralski SiliconDetectors and Experimental TechniquesThe purpose of this work was to study the radiation hardness of particle detectors. Silicon detectors are cost-effective andhave an excellent spatial resolution. Therefore, they are widely used in many high-energy physics experiments. It is knownthat oxygen improves the radiation hardness of silicon detectors. The natural way to have a high concentration of oxygen insilicon is to use magnetic Czochralski silicon (MCz-Si). MCz-Si has intrinsically a relatively uniform and high level ofoxygen (5x10^17 cm^3) compared to regular float-zone silicon (FZ-Si). Such a level is hard to attain with other methods,namely the diffusion oxygenation of float-zone silicon.In the Large Hadron Collider (LHC) and its potential upgrade, the luminosity and the fluencies of fast hadrons can be sohigh that detectors made of standard detector-grade FZ-Si might not survive the planned operating period. MCz-Si offers animprovement to the lifetime of particle detectors through improved radiation hardness.This thesis takes a process-oriented view of the potential of the MCz-Si material. The processing of radiation detectors onMCz-Si is described, the process is characterized from the process point of view, and the radiation hardness is studied afterirradiations. There is also an emphasis on the intentional introduction of thermal donors (TDs) in high-resistivity MCz-Simaterial, and specifically on their potential in p-type MCz-Si detectors.CERN-THESIS-2012-050CMS-TS-2012-010oai:cds.cern.ch:14465702012
spellingShingle Detectors and Experimental Techniques
Tuovinen, Esa
Processing of Radiation Hard Particle Detectors on Czochralski Silicon
title Processing of Radiation Hard Particle Detectors on Czochralski Silicon
title_full Processing of Radiation Hard Particle Detectors on Czochralski Silicon
title_fullStr Processing of Radiation Hard Particle Detectors on Czochralski Silicon
title_full_unstemmed Processing of Radiation Hard Particle Detectors on Czochralski Silicon
title_short Processing of Radiation Hard Particle Detectors on Czochralski Silicon
title_sort processing of radiation hard particle detectors on czochralski silicon
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1446570
work_keys_str_mv AT tuovinenesa processingofradiationhardparticledetectorsonczochralskisilicon