A precise method for the detection of the two photons from the neutral pion decay in hypernuclear spectroscopy
Abstract
An experimental technique for the light lambda-hypernuclei structure studies by using (negative kaon, neutral pion) reaction and Neutral Meson Spectrometer (NMS) developed at the BNL has been described. Position dependence calibration of the BGO conversion planes of the NMS was invented as the solution to the crucial constraint of the high resolution in single-lambda spectroscopy. Position parameters of the BGO crystal rods were fitted out from the out-of-kaon beam measured data as obtained by the original small highly collimated Co-60 source method, based on the coincidences between top and bottom signals of each BGO rod.
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