Author/Authors :
Bernreuther، نويسنده , , S and Borissov، نويسنده , , A.B and Bِttcher، نويسنده , , H and Brons، نويسنده , , S and Brückner، نويسنده , , W and Buchsteiner، نويسنده , , A and Ferstl، نويسنده , , M and Gنrber، نويسنده , , Y and Gute، نويسنده , , A and Harder، نويسنده , , U and Hasch، نويسنده , , D and Kirsch، نويسنده , , M and Krause، نويسنده , , B and Lachnit، نويسنده , , W.A and Meiكner، نويسنده , , F and Modrak، نويسنده , , G and Neunreither، نويسنده ,
Abstract :
The tracking system of the HERMES spectrometer behind the bending magnet consists of two pairs of large planar 6-plane drift chambers. The design and performance of these chambers is described. This description comprises details on the mechanical and electronical design, information about the gas mixture used and its properties, results on alignment, calibration, resolution, and efficiencies, and a discussion of the experience gained through the first three years of operation.
