Göttingen 2012 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 63: Halbleiterdetektoren: Forschung und Entwicklung 1

T 63.7: Vortrag

Montag, 27. Februar 2012, 18:20–18:35, ZHG 001

Development of DC-DC converters for the upgrade of the CMS pixel detector — Lutz Feld, Waclaw Karpinski, Katja Klein, •Jan Sammet, and Michael Wlochal — RWTH Aachen University, Germany

Around 2017, the pixel detector of the CMS experiment at LHC will be upgraded. The amount of current that has to be provided to the front-end electronics is expected to increase by a factor of two. Since the space available for cables is limited, this would imply unacceptable power losses in the available supply cables. Therefore it is foreseen to place DC-DC converters close to the front-end electronics, allowing to provide the power at higher voltages and thereby to facilitate the supply of the required currents with the present cable plant.

The talk introduces the foreseen powering scheme of the pixel upgrade and summarizes the results of system test measurements with CMS pixel sensor modules, radiation tolerant DC-DC converters and the full power supply chain of the pixel detector. In addition, measurements of the converter efficiency and performance before, after and during thermal cycling will be presented.