A Backscatter-Suppressed Beta Spectrometer for Neutron Decay Studies

Details A Backscatter-Suppressed Beta Spectrometer for Neutron Decay Studies A Backscatter-Suppressed Beta Spectrometer for Neutron Decay Studies

2004-01-21

arxiv.org/abs/nucl-ex/0401024v1

Nucl.Instrum.Meth. A538 (2005) 574-591

Physics

Nuclear Physics

Nuclear Experiment

27 pages, 20 figures

Scientific paper

10.1016/j.nima.2004.08.123

We describe a beta electron spectrometer for use in an upcoming experiment that will measure the beta-antineutrino correlation coefficient (a-coefficient) in neutron beta decay. Electron energy is measured by a thick plastic scintillator detector. A conical array of plastic scintillator veto detectors is used to suppress events where the electron backscattered. A Monte Carlo simulation of this device in the configuration of the a-coefficient experiment is presented. The design, construction, and testing of a full-scale prototype device is described. We discuss the performance of this spectrometer with respect to its suitability for the experiment.

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