3.5x0.5 m2 drift tube modules made of Al alloys

Methane filled drift tube modules each comprising eight 40 mm in diameter drift tubes with the anode wire diameter of 40 or 60 μm have been studied. The plateau of efficient detection for minimal ionizing particles is 1.2 kV with 1.5 μm threshold of detection electronics. The measured time-coordinate relations are showm. Maximum electron drift time-coordinate relations are 0.30 μm, averaged over the radius coordinate resolution is 0.23 mm by cosmic particles. The module characteristics do not depend on the Al alloy type. The modules can be used to construct the coordinate detectors of elementary particles with the area of thousand square meters. 8 refs