2026-09-21T12:12:52Zhttps://iris.unitn.it/oai/requestoai:iris.unitn.it:11572/3676992026-04-03T00:46:27Zcom_11572_237821com_11572_101871col_11572_237822ou_ou00006
Development of Small-Pitch, Thin 3D Sensors for Pixel Detector Upgrades at HL-LHC
Sultan, D M S
Sultan, D M S
Dalla Betta, Gian Franco
Settore ING-IND/20 - Misure e Strumentazione Nucleari
Settore ING-INF/07 - Misure Elettriche e Elettroniche
Settore ING-INF/01 - Elettronica
Settore FIS/01 - Fisica Sperimentale
3D Si radiation sensors came along with extreme radiation hard properties, primarily owing to the geometrical advantages over planar sensors where electrodes are formed penetrating through the active substrate volume. Among them: reduction of the inter-electrode distance, lower depletion voltage requirement, inter-columnar high electric field distribution, lower trapping probability, faster charge collection capability, lower power dissipation, and lower inter-pitch charge sharing. Since several years, FBK has developed 3D sensors with a double-sided technology, that have also been installed in the ATLAS Insertable B-Layer at LHC. However, the future High-Luminosity LHC (HL-LHC) upgrades, aimed to be operational by 2024, impose a complete swap of current 3D detectors with more radiation hard sensor design, able to withstand very large particle fluences up to 2×1016 cm-2 1-MeV equivalent neutrons. The extreme luminosity conditions and related issues in occupancy and radiation hardness lead to very dense pixel granularity (50×50 or 25×100 μm2), thinner active region (~100 μm), narrower columnar electrodes (~5μm diameter) with reduced inter-electrode spacing (~30 μm), and very slim edges (~100 μm) into the 3D pixel sensor design. This thesis includes the development of this new generation of small-pitch and thin 3D radiation sensors aimed at the foreseen Inner Tracker (ITk) upgrades at HL-LHC.
2017
info:eu-repo/semantics/doctoralThesis
https://hdl.handle.net/11572/367699
http://dx.doi.org/10.15168/11572_367699
10.15168/11572_367699
eng
firstpage:1
lastpage:184
numberofpages:184
info:eu-repo/semantics/openAccess
Università degli studi di Trento
place:TRENTO
license:Tutti i diritti riservati (All rights reserved)
license:Tutti i diritti riservati (All rights reserved)
license uri:iris.PRI01