Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 30: Instrumentation VI

HK 30.3: Vortrag

Mittwoch, 1. April 2020, 14:45–15:00, J-HS D

Commissioning of the GlueX DIRC at JLabAhmed Ali1,2, •Roman Dzhygadlo1, Klaus Peters1,2, and Jochen Schwiening1 for the GlueX collaboration — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Goethe-Universität Frankfurt

The GlueX experiment at Jefferson Laboratory aims to perform quantitative tests of non-perturbative QCD by studying the spectrum of light-quark mesons and baryons. A Detector of Internally Reflected Cherenkov light (DIRC) was recently installed to enhance the particle identification (PID) capability of the GlueX experiment by providing clean π/K separation up to 4 GeV/c momentum in the forward region (θ<11 degree), which will allow the study of hybrid mesons decaying into kaon final states with significantly higher efficiency and purity.

The new PID system is build using radiators from the decommissioned BaBar DIRC counter, combined with new compact photon cameras based on the SuperB FDIRC concept. The first half of the system was successfully installed and commissioned in early 2019. Commissioning of the complete GlueX DIRC with beam is scheduled for December 2019. We will discuss the status of the DIRC detector and its performance during commissioning.

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