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Particle and Photon Detection for a Neutron Radiative Decay Experiment



Thomas R. Gentile, Maynard S. Dewey, Hans P. Mumm, Jeffrey S. Nico, Alan K. Thompson, T E. Chupp, R Cooper, B M. Fisher, I Kremsky, F E. Wietfeldt, K G. Kiriluk, E Beise


We present the particle and photon detection methods employed in a program to observe neutron radiative beta-decay. The experiment is located at the NG-6 beam line at the National Institute of Standards and Technology Center for Neutron Research. Electrons and protons are guided by a 4.6 T magnetic field and detected by a silicon surface barrier detector. Photons with energies between 15 keV and 750 keV are registered by a detector consisting of a bismuth germanate scintillator coupled to a large area avalanche photodiode. The photon detector operates at a temperature near 80 K in the bore of a superconducting magnet. We discuss CsI as an alternative scintillator, and avalanche photodiodes for direct detection of photons in the 0.1 keV - 10 keV range.
Nuclear Instruments & Methods


gamma-ray, neutron decay, photodiode, photon, radiative, scintillator


Gentile, T. , Dewey, M. , Mumm, H. , Nico, J. , Thompson, A. , Chupp, T. , Cooper, R. , Fisher, B. , Kremsky, I. , Wietfeldt, F. , Kiriluk, K. and Beise, E. (2007), Particle and Photon Detection for a Neutron Radiative Decay Experiment, Nuclear Instruments & Methods, [online], (Accessed February 26, 2024)
Created April 11, 2007, Updated February 17, 2017