A. Andryakov et al., THE FULL-LENGTH PROTOTYPE OF THE KLOE DRIFT CHAMBER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 404(2-3), 1998, pp. 248-264
The main goal of the KLOE experiment is the study of CP violation in t
he K mesons system, with an accuracy of 10(-4) in the measurement of R
e(epsilon'/epsilon). This task imposes strong constraints on the desig
n and operation of the drift chamber, which must reconstruct the charg
ed decays of low momentum K-L's and K-S's with high efficiency and hig
h resolution, full-length prototype of the chamber has been built and
tested on a 50 GeV/c beam. The analysis of the large sample of data ha
s allowed a detailed study of the time to distance relations as a func
tion of the track parameters and of the peculiar geometry of the drift
cell, The detector performance, in terms of efficiency, spatial resol
utions and dE/dx resolution, is illustrated and discussed. (C) 1998 El
sevier Science B.V. All rights reserved.