The horizontal drift chambers for the focal plane proton-polarimeter of the 3-spectrometer setup at MAMI

2002

Abstract Large-area horizontal drift chambers have been built for use in a proton polarimeter. A gas mixture of 20% argon and 80% ethane is used. The left–right assignment is achieved by measuring the difference of the signals induced on neighboring potential wires. A spatial resolution of 300 μm is achieved.