Author/Authors :
Angstadt، نويسنده , , R. and Bagby، نويسنده , , L. and Bean، نويسنده , , A. and Bolton، نويسنده , , T. and Buchholz، نويسنده , , D. and Butler، نويسنده , , D. and Christofek، نويسنده , , L. and Cooper، نويسنده , , W.E. and Daly، نويسنده , , C.H. and Demarteau، نويسنده , , M. and Foglesong، نويسنده , , J. and Gerber، نويسنده , , C.E. and Gonzalez، نويسنده , , H. and Green، نويسنده , , J. and Guldenman، نويسنده , , H. and Hanagaki، نويسنده , , K، نويسنده ,
Abstract :
This paper describes the design, fabrication, installation and performance of the new inner layer called Layer 0 (L0) that was inserted in the existing Run IIa silicon micro-strip tracker (SMT) of the D0 experiment at the Fermilab Tevatron p¯p collider. L0 provides tracking information from two layers of sensors, which are mounted with center lines at a radial distance of 16.1 and 17.6 mm from the beam axis. The sensors and read-out electronics are mounted on a specially designed and fabricated carbon fiber structure that includes cooling for sensor and read-out electronics. The structure has a thin polyimide circuit bonded to it so that the circuit couples electrically to the carbon fiber allowing the support structure to be used both for detector grounding and a low impedance connection between the remotely mounted hybrids and the sensors.
Keywords :
Support structure , D0 , Silicon microstrip tracker , Layer 0 , Tevatron , Carbon fiber
