The 8Li Calibration Source for the Sudbury Neutrino Obervatory
Abstract
A calibration source employing 8Li (t_1/2 = 0.838s) has been developed for use with the Sudbury Neutrino Observatory (SNO). This source creates a spectrum of beta particles with an energy range similar to that of the SNO 8B solar neutrino signal. The source is used to test the SNO detector's energy response, position reconstruction and data reduction algorithms. The 8Li isotope is created using a deuterium-tritium neutron generator in conjunction with a 11B target, and is carried to a decay chamber using a gas/aerosol transport system. The decay chamber detects prompt alpha particles by gas scintillation in coincidence with the beta particles which exit through a thin stainless steel wall. A description is given of the production, transport, and tagging techniques along with a discussion of the performance and application of the source.
Keywords
Cite
@article{arxiv.nucl-ex/0202024,
title = {The 8Li Calibration Source for the Sudbury Neutrino Obervatory},
author = {N. J. Tagg and A. Hamer and B. Sur and E. D. Earle and R. L. Helmer and G. Jonkmans and B. A. Moffat and J. J. Simpson},
journal= {arXiv preprint arXiv:nucl-ex/0202024},
year = {2009}
}
Comments
11 pages plus 9 figures, Sumbitted to Nuclear Instruments and Methods A