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Power distribution studies for CMS forward tracker

Abstract : The Electronic Systems Engineering Department of the Computing Division at the Fermi National Accelerator Laboratory is carrying out R&D investigations for the upgrade of the power distribution system of the Compact Muon Solenoid (CMS) Pixel Tracker at the Large Hadron Collider (LHC). Among the goals of this effort is that of analyzing the feasibility of alternative powering schemes for the forward tracker, including DC to DC voltage conversion techniques using commercially available and custom switching regulator circuits. Tests of these approaches are performed using the PSI46 pixel readout chip currently in use at the CMS Tracker. Performance measures of the detector electronics will include pixel noise and threshold dispersion results. Issues related to susceptibility to switching noise will be studied and presented. In this paper, we describe the current power distribution network of the CMS Tracker, study the implications of the proposed upgrade with DC-DC converters powering scheme and perform noise susceptibility analysis.
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Aida Todri-Sanial, Marcos Turqueti, Ryan Rivera, Simon Kwan. Power distribution studies for CMS forward tracker. IEEE Nuclear Science Symposium Conference Record (NSS/MIC), 2009, Orlando, United States. ⟨10.1109/NSSMIC.2009.5402390⟩. ⟨lirmm-01973782⟩



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