DC–DC powering for the CMS pixel upgrade

DC–DC powering for the CMS pixel upgrade

The CMS experiment plans to replace its silicon pixel detector with a new one with improved rate capability and an additional detection layer at the end of 2016. In order to cope with the increased number of detector modules the new pixel detector will be powered via DC–DC converters close to the se...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2013-12, Vol.732, p.493-496
Hauptverfasser: Feld, Lutz, Fleck, Martin, Friedrichs, Marcel, Hensch, Richard, Karpinski, Waclaw, Klein, Katja, Rittich, David, Sammet, Jan, Wlochal, Michael
Format: Artikel
Sprache:eng
Schlagworte:
Accelerators
CMS
Converters
DC to DC
DC–DC conversion
Design engineering
Detectors
LHC upgrades
Modules
Pixel detector
Pixels
Power distribution
Silicon
Systems design
Tracking systems
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Zusammenfassung:The CMS experiment plans to replace its silicon pixel detector with a new one with improved rate capability and an additional detection layer at the end of 2016. In order to cope with the increased number of detector modules the new pixel detector will be powered via DC–DC converters close to the sensitive detector volume. This paper reviews the DC–DC powering scheme and reports on the ongoing R&D program to develop converters for the pixel upgrade. Design choices are discussed and results from the electrical and thermal characterisation of converter prototypes are shown. An emphasis is put on system tests with up to 24 converters. The performance of pixel modules powered by DC–DC converters is compared to conventional powering. The integration of the DC–DC powering scheme into the pixel detector is described and system design issues are reviewed.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2013.06.053