A. Honma, THE OPAL SILICON STRIP MICROVERTEX DETECTOR UPGRADE TO 2 COORDINATE READOUT, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 348(2-3), 1994, pp. 409-415
The OPAL experiment at the CERN LEP collider recently upgraded its sil
icon strip microvertex detector from one coordinate readout (phi only)
to two coordinate readout (phi and z). This will allow for three dime
nsional vertexing and should improve lifetime measurements as well as
b-jet tagging and identification. This paper describes the new microve
rtex detector system with emphasis on the novel techniques and new com
ponents used to obtain the second coordinate information. Some prelimi
nary results on detector performance from data taken in the current LE
P run are presented.