G$^0$ Electronics and Data Acquisition (Forward-Angle Measurements)
Abstract
The G 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 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 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 forward-angle measurements.
Keywords
Cite
@article{arxiv.nucl-ex/0703026,
title = {G$^0$ Electronics and Data Acquisition (Forward-Angle Measurements)},
author = {D. Marchand and J. Arvieux and L. Bimbot and A. Biselli and J. Bouvier and H. Breuer and R. Clark and J. -C. Cuzon and M. Engrand and R. Foglio and C. Furget and X. Grave and B. Guillon and H. Guler and P. M. King and S. Kox and J. Kuhn and Y. Ky and J. Lachniet and J. Lenoble and E. Liatard and J. Liu and E. Munoz and J. Pouxe and G. Quéméner and B. Quinn and J. -S. Réal and O. Rossetto and R. Sellem},
journal= {arXiv preprint arXiv:nucl-ex/0703026},
year = {2010}
}
Comments
35 pages. 17 figures. This article is to be submitted to NIM section A. It has been written with Latex using \documentclass{elsart}. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment In Press (2007)