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

作者：Arimoto Y; Higashi N; Igarashi Y; Iwashita Y; Ino T; Katayama R; Kitaguchi M; Kitahara R; Matsumura H; Mishima K; Nagakura N; Oide H; Otono H^*; Sakakibara R; Shima T; Shimizu H M; Sugino T; Sumi N; Sumino H; Taketani K; Tanaka G; Tanaka M; Tauchi K; Toyoda A; Tomita T; Yamada T; Yamashita S; Yokoyama H; Yoshioka T

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2015, 799: 187-196.

DOI：10.1016/j.nima.2015.08.006

• Neutron lifetime
• Time projection chamber

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 Li-6-enriched tiles to absorb outlier neutrons. In this paper, the design and performance of the new TPC are reported in detail.

• 出版日期2015-11-1