Author/Authors :
Antipov، نويسنده , , Yu. S. Borisov and E. A. Zadvornyi ، نويسنده , , A and Goryachev، نويسنده , , R. A. Kayumov and I. H. Fakhrutdinov ، نويسنده , , R and Kozhin، نويسنده , , A and Salomatin، نويسنده , , Yu and Tumakov، نويسنده , , V and Vovenko، نويسنده , , A and Zimin، نويسنده , , S، نويسنده ,
Abstract :
A drift chamber prototype for the muon system of the ATLAS detector has been prepared and tested with a muon beam at CERN. The mechanical accuracy for the sense wire positions was measured with X-ray tomography (the rms is better than 33 μm). An ArCO2N2CF4 gas mixture (95%−2%−2%−1%) at an absolute pressure of 3 atm was used. Spatial resolutions σ = 80 μm (Us = 3400 V) and σ = 60 μm (Us = 3500 V) were achieved.
