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 6Li-enriched tiles to absorb outlier neutrons. In this paper, the design and performance of the new TPC are reported in detail.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- November 2015
- DOI:
- 10.1016/j.nima.2015.08.006
- arXiv:
- arXiv:1503.07936
- Bibcode:
- 2015NIMPA.799..187A
- Keywords:
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- Neutron lifetime;
- Time projection chamber;
- Physics - Instrumentation and Detectors;
- Nuclear Experiment
- E-Print:
- 33 pages, 10 figures