Author/Authors :
Avanzini، نويسنده , , C and Ciapetti، نويسنده , , G and Lucia، نويسنده , , E.De and Lacava، نويسنده , , F and Luisi، نويسنده , , C and Margutti، نويسنده , , G and Nisati، نويسنده , , A and Passaseo، نويسنده , , M and Pontecorvo، نويسنده , , L and Rosati، نويسنده , , S and Veneziano، نويسنده , , S and Verzocchi، نويسنده , , M and Valente، نويسنده , , P and Bacci، نويسنده , , C and Ceradini، نويسنده , , F and Bencivenni، نويسنده , , G and Calcat، نويسنده ,
Abstract :
We report on a beam test of a small prototype of the KLOE drift chamber in magnetic field. The chamber was operated with a 90% He–10% iC4H10 gas mixture. Drift space–time relations were studied. The average spatial resolution is about 110 μm in the absence of magnetic field and 120 μm in a 0.6 T magnetic field. Measurements of the primary ionization and drift velocity are reported. The measurement of dE/dx in a He-based gas mixture is also discussed.
