Bonn 2020 – wissenschaftliches Programm
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HK 62.3: Vortrag
Freitag, 3. April 2020, 11:30–11:45, H-HS XIII
First 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, Max Rauch1, 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 pT 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 up to 4 modules at once at the test beam facility of DESY Hamburg using a 4 GeV electron beam and the AIDA telescope. This talk will showcase the efficiency of the new pT discrimination mechanism and the test on synchronicity of modules.