KIT | KIT-Bibliothek | Impressum | Datenschutz

Selection of the silicon sensor thickness for the Phase-2 upgrade of the CMS Outer Tracker

CMS Tracker Collaboration; Adam, W.; Bergauer, T.; Blöch, D.; Dragicevic, M.; Frühwirth, R.; Hinger, V.; Steininger, H.; Beaumont, W.; Di Croce, D.; Janssen, X.; Kello, T.; Lelek, A.; Van Mechelen, P.; Van Putte, S.; Van Remortel, N.; Blekman, F.; Delcourt, M.; D'Hondt, J.; ... mehr


During the operation of the CMS experiment at the High-Luminosity LHC the silicon sensors of the Phase-2 Outer Tracker will be exposed to radiation levels that could potentially deteriorate their performance. Previous studies had determined that planar float zone silicon with n-doped strips on a p-doped substrate was preferred over p-doped strips on an n-doped substrate. The last step in evaluating the optimal design for the mass production of about 200 m$^{2}$ of silicon sensors was to compare sensors of baseline thickness (about 300 μm) to thinned sensors (about 240 μm), which promised several benefits at high radiation levels because of the higher electric fields at the same bias voltage. This study provides a direct comparison of these two thicknesses in terms of sensor characteristics as well as charge collection and hit efficiency for fluences up to 1.5 × 10$^{15}$ n$_{eq}$/cm$^{2}$. The measurement results demonstrate that sensors with about 300 μm thickness will ensure excellent tracking performance even at the highest considered fluence levels expected for the Phase-2 Outer Tracker.

Verlagsausgabe §
DOI: 10.5445/IR/1000140788
Veröffentlicht am 03.12.2021
DOI: 10.1088/1748-0221/16/11/P11028
Zitationen: 3
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2021
Sprache Englisch
Identifikator ISSN: 1748-0221
KITopen-ID: 1000140788
HGF-Programm 54.12.01 (POF IV, LK 01) Detection and Measurement
Weitere HGF-Programme 47.12.03 (POF IV, LK 01) Quantum-Computer Control Systems and Cryoelectronics
Erschienen in Journal of Instrumentation
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 16
Heft 11
Seiten Article no: P11028
Vorab online veröffentlicht am 22.11.2021
Nachgewiesen in Dimensions
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page