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Title: G0 Electronics and Data Acquisition (Forward-Angle Measurements)

Abstract

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.

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
902174
Report Number(s):
JLAB-PHY-07-622; DOE/ER/40150-4260; nucl-ex/0703026
TRN: US0702803
DOE Contract Number:
AC05-84ER40150
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; ARCHITECTURE; ASYMMETRY; CROSS SECTIONS; DATA ACQUISITION; ELASTIC SCATTERING; HELICITY; MONITORING; PROTONS; QUARKS; SPECTRA

Citation Formats

D. Marchand, J. Arvieux, L. Bimbot, A. Biselli, J. Bouvier, H. Breuer, R. Clark, J.-C. Cuzon, M. Engrand, R. Foglio, C. Furget, X. Grave, B. Guillon, H. Guler, P.M. King, S. Kox, J. Kuhn, Y. Ky, J. Lachniet, J. Lenoble, E. Liatard, J. Liu, E. Munoz, J. Pouxe, G. Quéméne, B. Quinn, J.-S. Réal, O. Rossetto, and R. Sellem. G0 Electronics and Data Acquisition (Forward-Angle Measurements). United States: N. p., 2007. Web.
D. Marchand, J. Arvieux, L. Bimbot, A. Biselli, J. Bouvier, H. Breuer, R. Clark, J.-C. Cuzon, M. Engrand, R. Foglio, C. Furget, X. Grave, B. Guillon, H. Guler, P.M. King, S. Kox, J. Kuhn, Y. Ky, J. Lachniet, J. Lenoble, E. Liatard, J. Liu, E. Munoz, J. Pouxe, G. Quéméne, B. Quinn, J.-S. Réal, O. Rossetto, & R. Sellem. G0 Electronics and Data Acquisition (Forward-Angle Measurements). United States.
D. Marchand, J. Arvieux, L. Bimbot, A. Biselli, J. Bouvier, H. Breuer, R. Clark, J.-C. Cuzon, M. Engrand, R. Foglio, C. Furget, X. Grave, B. Guillon, H. Guler, P.M. King, S. Kox, J. Kuhn, Y. Ky, J. Lachniet, J. Lenoble, E. Liatard, J. Liu, E. Munoz, J. Pouxe, G. Quéméne, B. Quinn, J.-S. Réal, O. Rossetto, and R. Sellem. Wed . "G0 Electronics and Data Acquisition (Forward-Angle Measurements)". United States. doi:. https://www.osti.gov/servlets/purl/902174.
@article{osti_902174,
title = {G0 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. Quéméne and B. Quinn and J.-S. Réal and O. Rossetto and R. Sellem},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 18 00:00:00 EDT 2007},
month = {Wed Apr 18 00:00:00 EDT 2007}
}