%0 Journal Article
%T G$^0$ Electronics and Data Acquisition (Forward-Angle Measurements)
%A D. Marchand
%A J. Arvieux
%A L. Bimbot
%A A. Biselli
%A J. Bouvier
%A H. Breuer
%A R. Clark
%A J. -C. Cuzon
%A M. Engrand
%A R. Foglio
%A C. Furget
%A X. Grave
%A B. Guillon
%A H. Guler
%A P. M. King
%A S. Kox
%A J. Kuhn
%A Y. Ky
%A J. Lachniet
%A J. Lenoble
%A E. Liatard
%A J. Liu
%A E. Munoz
%A J. Pouxe
%A G. Qu¨¦m¨¦ner
%A B. Quinn
%A J. -S. R¨¦al
%A O. Rossetto
%A R. Sellem
%J Physics
%D 2007
%I arXiv
%R 10.1016/j.nima.2007.11.028
%X The G$^0$ parity-violation experiment at Jefferson Lab (Newport News, VA) is designed to determine the contribution of strange/anti-strange quark pairs to the intrinsic properties of the proton. In the forward-angle part of the experiment, the asymmetry in the cross section was measured for $\vec{e}p$ elastic scattering by counting the recoil protons corresponding to the two beam-helicity states. Due to the high accuracy required on the asymmetry, the G$^0$ experiment was based on a custom experimental setup with its own associated electronics and data acquisition (DAQ) system. Highly specialized time-encoding electronics provided time-of-flight spectra for each detector for each helicity state. More conventional electronics was used for monitoring (mainly FastBus). The time-encoding electronics and the DAQ system have been designed to handle events at a mean rate of 2 MHz per detector with low deadtime and to minimize helicity-correlated systematic errors. In this paper, we outline the general architecture and the main features of the electronics and the DAQ system dedicated to G$^0$ forward-angle measurements.
%U http://arxiv.org/abs/nucl-ex/0703026v1