Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 65: Combined Instrumentation Session: Silicon Pixel Detectors (joint session HK/T)

HK 65.3: Vortrag

Freitag, 3. April 2020, 11:30–11:45, J-HS K

First measurements with an ALPIDE MAPS telescope in an 40-Ar test beam at GSI — •Pascal Becht for the ALICE collaboration — GSI Helmholzzentrum für Schwerionenforschung, Darmstadt, Germany

In the framework of the ALICE Inner Tracking System (ITS) upgrade during LHC’s long shutdown 2, a new silicon sensor chip was developed and produced. This ALICE Pixel Detector (ALPIDE) chip is entirely built up of Monolithic Active Pixel Sensors (MAPS) and can be thinned down to 50 µm. It features a low material budget of only 0.05% X/X0 as well as a position resolution in the order of 5 µm, which makes it suitable for the use in high-resolution beam telescopes.

In order to investigate the detector performance different beam tests with e. g. proton or pion beams have been performed using an ALPIDE MAPS telescope. To study the performance of such telescopes being irradiated with highly ionising particles, a 7-layer ALPIDE MAPS telescope has been brought to GSI and installed in a test beam area. In this talk, first results of this 50 MeV/u 40-Ar beam test at GSI are discussed.

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