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HK: Fachverband Hadronen und Kerne

HK 18: Accelerators and Instrumentation I

HK 18.1: Talk

Monday, March 16, 2009, 16:30–16:45, H-ZO 80

Beam identification system of the COMPASS-Experiment — •Prometeusz Jasinski — Institut für Kernphysik, Universität Mainz, Johann-Joachim-Becherweg 45, 55099 Mainz

In order to study the production of exotic mesons the COMPASS experiment at CERN took data with a 190 GeV/c hadron beam in the year 2008. The negative hadron beam contains mainly of pions and a small fraction of about 3% of Kaons. To identify and trigger on the small Kaon component, two beam Cherenkov Detectors with Achromatic Ringfocus, so called CEDAR detectors were installed. In the talk I will present the detector performance of the CEDARs during the 2008 run, including their efficiency and the achieved purity of the Kaon signal. Prospects for the upcoming hadron run in 2009 will also be discussed. Supported by BMBF under the contract 06MZ224