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München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Instrumentation II

HK 8.8: Vortrag

Montag, 18. März 2019, 15:45–16:00, HS 12

Ladder assembly procedure for the Silicon Tracking System of the CBM Experiment — •Shaifali Mehta for the CBM collaboration — Universität Tübingen, Tübingen, Germany — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

The Compressed Baryonic Matter (CBM) experiment is one of the major scientific pillars of the future Facility for Anti-proton and Ion Research (FAIR), which is presently under construction adjacent to GSI, Darmstadt. In the CBM experiment, the main task of the Silicon Tracking System is to reconstruct the tracks and measure the momentum of charged particles. The detector comprises of 896 detector modules, based on double-sided silicon microstrip sensors distributed on 8 tracking stations. The stations are made from mechanical half units onto which carbon fibre detector ladders are mounted holding the modules. A tool has been designed to study the feasibility of the ladder assembly. One half of the longest ladder variant has been assembled with 5 non-functional modules. The same assembly technique was used to build a ladder with two functional modules for the mini-STS detector demonstrator which is currently in the mini-CBM set-up at SIS18.
This work focuses on integrating modules onto ladders which are then optically surveyed with a precision of ±10 µm. The ladder assembly concept of mounting the modules on the ladder with a mechanical precision better than 100 µm will be presented in this talk.

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