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Comparative evaluation of analogue front-end designs for the CMS Inner Tracker at the High Luminosity LHC

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.; Mechelen, P. Van; Van Putte, S.; Van Remortel, N.; Blekman, F.; Delcourt, M.; D’Hondt, J.; Lowette, S.; ... mehr

Abstract:

The CMS Inner Tracker, made of silicon pixel modules, will be entirely replaced prior to the start of the High Luminosity LHC period. One of the crucial components of the new Inner Tracker system is the readout chip, being developed by the RD53 Collaboration, and in particular its analogue front-end, which receives the signal from the sensor and digitizes it. Three different analogue front-ends (Synchronous, Linear, and Differential) were designed and implemented in the RD53A demonstrator chip. A dedicated evaluation program was carried out to select the most suitable design to build a radiation tolerant pixel detector able to sustain high particle rates with high efficiency and a small fraction of spurious pixel hits. The test results showed that all three analogue front-ends presented strong points, but also limitations. The Differential front-end demonstrated very low noise, but the threshold tuning became problematic after irradiation. Moreover, a saturation in the preamplifier feedback loop affected the return of the signal to baseline and thus increased the dead time. The Synchronous front-end showed very good timing performance, but also higher noise. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000142413
Veröffentlicht am 27.01.2022
Originalveröffentlichung
DOI: 10.1088/1748-0221/16/12/P12014
Scopus
Zitationen: 6
Web of Science
Zitationen: 3
Dimensions
Zitationen: 10
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1748-0221
KITopen-ID: 1000142413
HGF-Programm 54.12.01 (POF IV, LK 01) Detection and Measurement
Erschienen in Journal of Instrumentation
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 16
Heft 12
Seiten Art.-Nr.: P12014
Nachgewiesen in Dimensions
Scopus
Web of Science
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