Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 24: Gasgefüllte Detektoren 1 (gemeinsam mit HK)

T 24.8: Talk

Monday, March 27, 2017, 18:45–19:00, F 102

Multicomponent drift gas mixtures for the SHiP Muon Magnetic Spectrometer — •Stefan Bieschke, Caren Hagner, Daniel Bick, Joachim Ebert, and Walter Schmidt-Parzefall — Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, 22761 Hamburg

SHiP is a proposed beam dump experiment to Search for Hidden Particles. It has a dedicated subdetector for neutrino physics that is equipped with a Muon Magnetic Spectrometer. For the spectrometer, upgraded drift tubes from the OPERA experiment are foreseen. The drift gas mixture used at OPERA had a high maximum drift time and a non-linear rt-relation. Due to the high rates at a beam dump experiment, a faster drift gas is needed. By adding small amounts of Nitrogen to the drift gas mixture, the maximum drift time was significantly reduced and the rt-relation became more linear. The drift gas mixture Ar:CO₂:N₂ 96:3:1 was found to be best suited candidate for a linear and fast drift gas mixture at atmospheric pressure.