Abstract
A method based on recording the γ-ray pulse, emitted from the reactor channel and transmitted through the rotor slits of a mechanical chopper, has been used to determined the zero channel of a neutron time-of-flight spectrometer. The experimental shape of the γ-ray pulse, recorded by the time analyser, was fitted with a calculated expression based on the transmission of the γ-ray pulse through the chopper rotor. The accuracy in the zero-channel determination was found to be within 10 μs, which is half the channel width of the time analyser used.
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