Author/Authors :
Agnello، نويسنده , , M and Botta، نويسنده , , E and Bressani، نويسنده , , T and Busso، نويسنده , , L and Calvo، نويسنده , , D and Feliciello، نويسنده , , A and Filippi، نويسنده , , A and Iazzi، نويسنده , , F and Marcello، نويسنده , , S and Minetti، نويسنده , , B and Morra، نويسنده , , S. and Mirfakhrai، نويسنده , , N and Rossetto، نويسنده , , E and Sharma، نويسنده , , A، نويسنده ,
Abstract :
We have measured the performances of a large (115 × 57) cm2 planar drift chamber filled with a HeiC4H10 (70–30) mixture in a beam. The spatial resolution is better than 100 μm along the whole drift cell. Local and integrated efficiencies are 99.3±0.2% and 98.1±0.2% respectively. The coordinate along the wire is measured by the charge division method and the resolution at the center is 0.61% of the wire length.
