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Serial powering in four-chip prototype RD53A modules for Phase 2 upgrade of the CMS pixel detector
- Journal Article
Serial powering is the baseline choice for the upgrade of the CMS pixel detector for the High Luminosity LHC. The first results with the four-chip prototype pixel detector modules based on the demonstrator 65nm CMOS technology RD53A chip are presented. The serially powered chain is operated at a constant supply current and the regulation is performed on-chip using a shunt low-dropout regulator (SLDO). Chips on each module are powered in parallel to prevent single-point failures. The SLDO behaviour in the system is presented as well as relevant differences in the behaviour compared to single chips. The noise levels are measured in pixels of a module in a serially powered chain and no increase is observed compared to a single module or the reported noise levels for a single chip. © 2020 Elsevier B.V. Show more
Journal / seriesNuclear Instruments & Methods in Physics Research. Section A
Pages / Article No.
SubjectSerial powering; Shunt low-dropout regulator; CMS pixel detector; RD53A
Organisational unit03904 - Wallny, Rainer / Wallny, Rainer
NotesAuthor on behalf of the CMS Tracker Group.
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