Abstract
A full size prototype of the KLOE drift chamber has been constructed and exposed to a 50 GeV/c pion beam at CERN. Five hundred single sense wire square cells, 3 × π cm2 and 1.5 × π/2 cm2, arranged in thirty layers (approximately 2300 wires in total), have been strung at stereo angles ranging from 50 to 120 mrad between two cone shaped carbon fiber end plates. Results on the studies of the time-to-distance relations, on spatial and dE/dx resolutions in a 90%He — 10%iC4H10 gas mixture are presented together with the main ideas underlying the algorithm used for reconstructing straight tracks in an all stereo drift chamber.
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