Reliability and Performance Studies of DC-DC Conversion Powering Scheme for the CMS Pixel Tracker at SLHC

Abstract : The upgrades of the Large Hadron Collider (LHC) introduce a significant challenge to the power distribution of the detectors. DC-DC conversion is the preferred powering scheme proposed to be integrated for the CMS tracker to deliver high input voltage levels and performing a step-down conversion nearby the detector modules. In this work, we propose a step-up/step-down powering scheme by performing voltage step up at the CAEN supply unit and voltage step down near the detector. We designed step-up converters and investigate the pixel performance and power loss on the FPIX power distribution system. Tests are performed using the PSI46 pixel readout chips on a forward pixel panel module and the DC-DC converters developed at CERN and Fermi- lab. Reliability studies include the voltage drop measurements on the readout chips and the power supply noise generated from the converter. Performance studies include pixel noise and threshold dispersion results. Comparison between step-down only and step-up/step-down conversion power- ing schemes are provided.
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Journal of Instrumentation, IOP Publishing, 2010, 5 (C12010), 〈10.1088/1748-0221/5/12/C12010〉
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-01255752
Contributeur : Aida Todri-Sanial <>
Soumis le : lundi 25 janvier 2016 - 10:14:20
Dernière modification le : dimanche 24 décembre 2017 - 14:02:01

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Aida Todri, L. Perera, R. Rivera, S. Kwan. Reliability and Performance Studies of DC-DC Conversion Powering Scheme for the CMS Pixel Tracker at SLHC. Journal of Instrumentation, IOP Publishing, 2010, 5 (C12010), 〈10.1088/1748-0221/5/12/C12010〉. 〈lirmm-01255752〉

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