Tests of time projection chamber module with delay line readout

The results of TPC tests in an accelerator beam are described. This chamber with a 800x350x60 mm3 sensitive volume is a module of a large TPC with dimensions 800x350x1600 mm3. The coordinate along the signal wires is determined by means of electromagnetic delay lines. The chamber operates with a track efficiency of >90% and a spatial resolution of 0.2-0.5 mm for the electron drift and 1-1.5 mm for the delay lines. The TPC module operates with high efficiency in the magnetic field with B=1.5 T as well. The chamber was investigated using beams with intensities up to 106 particles/s. An electric gate, designed for the trigger mode of the chamber operation, was tested in the beam both with and without the magnetic field. (orig.)