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T: Fachverband Teilchenphysik

T 44: Pixeldetektoren 2 (gemeinsam mit HK)

T 44.3: Gruppenbericht

Dienstag, 28. März 2017, 11:30–11:50, F 073

The vertex detector of NA61/SHINE* — •Michael Deveaux for the NA61/SHINE collaboration — Goethe Universität Frankfurt

The vertex detector of NA61/SHINE at the CERN SPS aims to collect open charm data in Pb+Pb collisions at high SPS energies. In a first phase, the so-called Small Acceptance Vertex Detector (SAVD) was developed and installed. It consists of four layers of 50  µ m thin MIMOSA-26AHR CMOS sensors providing a spatial resolution of ∼ 3.5  µ m. The sensors are integrated on the new ultra-lightweight support and cooling carbon fiber structures developed for the ALICE ITS upgrade. The readout of the detector and the techniques for integrating the sensors were derived from the prototype of the CBM Micro Vertex Detector.

We discuss the concept and design of the detector and show first results on the detector performance as obtained from a beam test with a 150A GeV/c Pb+Pb beam carried out in December 2016. Moreover, we give an outlook toward the construction of a full vertex detector.

* Supported by the Polish NCN (2014/15/B/ST2/02537), St-Petersburg Univ. (11.38.242.2015) and HIC for FAIR.