Investigation of silicon sensors suitable for collider experiments in high luminosity environments
Abstract: Collider experiments such as the upcoming High Luminosity Large Hadron Collider (HL-LHC) or the Future Circular Collider (FCC) will increase the demands of the detectors used for charged particle track reconstruction. Not only will the sensors face fluences of up to 1×10^17 neq/cm^2 and many proton-proton interactions in the same or neighbouring bunch crossing, but also need to cover large areas while maintaining a good spatial resolution.
Thus, the sensors need a high radiation tolerance and an excellent time resolution, while the production costs need to be kept low. In this thesis, effects of radiation damage in planar silicon sensors were investigated, in particular, prolonged pulses observed in sensors showing strong charge multiplication and the observation of a significant decrease in pulse amplitude in subsequent detection. In a second study, the performance of stitched passive CMOS strip sensors, produced by a commercial large volume foundry, was evaluated before and after irradiation, where the stitching process was proven to show no undesired effects.
In order to enable time resolution measurements, two setups were built and calibrated to measure the time resolution using a beta source and a known Low Gain Avalanche Diode (LGAD) as reference, and using a laser with a fiber splitter. Various LGADs and 3D sensors were measured, where 3D pixel sensors show a competitive time resolution and the correlation between electric field and time resolution in 3D sensors could be proven
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Universität Freiburg, Dissertation, 2022
- Schlagwort
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Detectors
Silicon
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2022
- Urheber
- DOI
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10.6094/UNIFR/228617
- URN
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urn:nbn:de:bsz:25-freidok-2286174
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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25.03.2025, 13:51 MEZ
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Beteiligte
Entstanden
- 2022
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