Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 85: Silicon Strip Detectors II

T 85.7: Talk

Thursday, March 18, 2021, 17:30–17:45, Tj

Beam test with the final readout scheme of Phase-2 CMS Outer Tracker 2S prototype modules — •Christian Dziwok², Lutz Feld¹, Katja Klein¹, Martin Lipinski¹, Alexander Pauls¹, Oliver Pooth², Nicolas Röwert¹, and Tim Ziemons² — ¹I. Physikalisches Institut B, RWTH Aachen University — ²III. Physikalisches Institut B, RWTH Aachen University

For the upcoming Phase-2 Upgrade for the operation of CMS at the HL-LHC a new silicon tracker design will be implemented. With extended acceptance and giving additional input of track p_T to the level-1 trigger, the new Outer Tracker will consist of 2S modules with two co-planar strip sensors and PS modules with a macro-pixel sensor and a strip sensor. Therefore, for these specialized detector modules the pT information of a track is already available online. Based on cluster size and position in a module’s sensors and its sensor spacing, a first pT trigger information is generated in its front-end ASIC and then constantly streamed to the back end at bunch crossing rate.

The final front-end ASIC CBC 3.1 was used alongside the concentrator ASIC CIC v1 and the serializer- and slow control ASICs GBTx and SCA without additional interface card for the first time. This final readout scheme of 2S modules has been tested with two modules at once at the test beam facility of DESY Hamburg using a 4 GeV electron beam and the DATURA telescope. This talk will showcase the efficiency of the new p_T discrimination mechanism and the test on synchronicity of modules.