Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 91: Streifendetektoren 2 (gemeinsam mit HK)

T 91.9: Vortrag

Mittwoch, 29. März 2017, 18:45–19:00, F 102

DC-DC Powered Silicon Microstrip Modules for the CMS Phase-II Tracker — Lutz Feld, Waclaw Karpinski, Katja Klein, •Marius Preuten, and Max Rauch — I. Physikalisches Institut B - RWTH Aachen

To prepare the CMS experiment for the High Luminosity LHC and its planned instantaneous luminosity of 5·10³⁴ cm⁻²s⁻¹ the CMS Silicon Tracker will be replaced in the Long Shutdown 3 (around 2025). The new Tracker will comprise about 15000 conceptually new modules: Two identical vertically spaced silicon microstrip sensors are integrated into a single module and read out by the same front-end chip. The displacement of the hits between both sensors - caused by the bending of charged particle tracks within the 3.8 T magnetic field - can be used to infer a lower bound on the pT of the track within a single module.
In order to satisfy the increased power demand of the new front-end electronics at minimal material budget an on-board DC-DC converter scheme was chosen. These converters, the high voltage circuit and the electro-optical conversion are merged into a single PCB (Service Hybrid) and are an integral part of the new tracker modules. First full size module prototypes have been produced and are currently tested. Results on the electrical performance during system tests including a Service Hybrid, will be presented in this talk.