Development of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams

Abstract

A new time projection chamber (TPC) was developed for neutron lifetime measurement using a pulsed cold neutron spallation source at the Japan Proton Accelerator Research Complex (J-PARC). Managing considerable background events from natural sources and the beam radioactivity is a challenging aspect of this measurement. To overcome this problem, the developed TPC has unprecedented features such as the use of polyether-ether-ketone plates in the support structure and internal surfaces covered with ${}^6$Li-enriched tiles to absorb outlier neutrons. In this paper, the design and performance of the new TPC are reported in detail.

33 pages, 10 figures

References in corpus (1)

• Improved Determination of the Neutron Lifetime

Cited by in corpus (7)

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• Neutron lifetime measurement with pulsed cold neutrons
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• Detection System for Neutron $\beta$ Decay Correlations in the UCNB and Nab experiments
• Measurement of $\gamma$ rays from ${}^6$LiF tile as an inner wall of a neutron-decay detector
• Fundamental physics activities with pulsed neutron at J-PARC(BL05)