Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 24: Detector systems II

T 24.2: Talk

Tuesday, March 31, 2020, 17:20–17:35, H-HS II

Commissioning of the LHCb Scintillating Fibre Tracker — Sebastian Bachmann, Daniel Berninghoff, Xiaoxue Han, Blake Leverington, Uli Uwer, and •Lukas Witola — Physikalisches Institut, Heidelberg, Deutschland

The LHCb detector is currently undergoing a major upgrade. The modifications will enable the detector to operate at an increased instantaneous luminosity and to read out data at the LHC bunch crossing rate of 40 MHz. The new operating conditions require the replacement of the complete tracking system. The main tracking stations will be replaced by the SciFi Tracker, a large, high granular scintillating fibre tracker readout by arrays of silicon photomultipliers (SiPMs). A custom ASIC is used to digitise the SiPM signals at 40 MHz. Further digital electronics perform clustering and data-compression before the data is sent via optical links to the DAQ system.
The detector modules together with the readout electronics and all services are mounted on so-called C-Frames. After a first prototype has been build and tested, the serial assembly of frames has started in March 2019. The talk will give an overview of the detector and present experiences from the serial production and the latest commissioning results.