Determination of the neutron lifetime by counting trapped protons

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Abstract

A description of an in-beam neutron lifetime experiment which employs a Penning trap for decay protons as a mechanism for the detection of neutron decay events is presented. A novel method for the accurate change in volume of the trap is discussed. Signal to noise ratios for neutron decay of ≈ 500 have been achieved. Preliminary results are discussed and an analysis of expected errors is given.

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