SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 45: Instrumentation XIII
HK 45.6: Vortrag
Mittwoch, 22. März 2023, 18:45–19:00, SCH/A.101
Data analysis of a GEM detector with VMM3a readout at the AMBER pilot run — Pascal Henkel1, Karl Jonathan Flöthner3,1, Virginia Klapper1, •Michael Lupberger1,2, and Bernhard Ketzer1 — 1Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, Bonn, Germany — 2Universität Bonn, Physikalisches Institut, Bonn, Germany — 3CERN, Geneva, Switzerland
In its first phase, the AMBER experiment at CERN SPS plans, among others, a measurement of the proton form factor at small Q2, using high-energy muon-proton elastic scattering. During a pilot run in October 2021 a GEM-based planar tracking prototype detector took data using the self-triggered VMM3a ASIC as readout chip. The purpose was a first test of the prototype detector in a high muon rate environment and in various configurations of the chip. The time-stamped VMM data has to be combined with the triggered data from the COMPASS spectrometer and other detectors in the pilot run setup. For synchronization, COMPASS trigger signals where injected into a dedicated VMM chip, such that they were timestamped.
In the ongoing analysis the obtained data is brought into temporal match with the external trigger which will make it possible to reconstruct particle tracks from the triggered detectors and correlate them with the signals measured by the prototype detector. The results should give insights that help optimizing the chip configurations in order to evaluate in future measurements how the VMM3a performs in comparison to the APV25 readout chip for COMPASS GEMs.