Darmstadt 2008 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Postersitzung

HK 34.43: Poster

Thursday, March 13, 2008, 14:00–16:00, Poster C3

An online gas composition monitor detector: The ALICE Goofie — •Juan Francisco Castillo Hernandez — Gesellschaft für Schwerionenforschung (GSI)

The gas composition of the ALICE TPC is constantly monitored using a stand-alone detector integrated into the TPC gas system. From precision measurements of the drift velocity and gas gain one can obtain a precise measure of the gas composition. In this contribution we describe the detector set-up, the procedure used to extract the gas composition for the ternary gas mixture (Ne(90),CO2(10),N2(5),normalyzed to 105) as well as the data acquisition and analysis chain.