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

N Ohuchi ,Y Igarashi,T Shima,H Oide,H Otono H Otono,T Yamada,K Tauchi,A Toyoda,Risa Sakakibara ,Takaaki Sugino ,Hirochika Sumino ,Naoki Nagatani ,Kaoru Taketani ,Nao Higashi ,T Ichihara ,Takahiro Tomita ,Masaaki Kitaguchi ,Ryo Katayama ,Ryunosuke Kitahara ,Kenji Mishima ,Hideshi Yokoyama ,Hiroshi Matsumura ,Naoyuki Sumi ,Genki Tanaka ,Yoshihisa Iwashita ,Hirohiko M Shimizu ,Shinji Yamashita ,Manobu Tanaka ,Tamaki Yoshioka

doi:10.1016/j.nima.2015.08.006

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

N Ohuchi , Y Igarashi + Show 27 more

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https://doi.org/10.1016/j.nima.2015.08.006

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Journal: Nuclear Inst. and Methods in Physics Research, A	Publication Date: Aug 10, 2015
Citations: 15

Affiliation: High Energy Accelerator Research Organization, Osaka University, The University of Tokyo, Kyushu University, Nagoya University, Obayashi (Japan), Kyoto University

#Time Projection Chamber #Japan Proton Accelerator Research Complex + Show 8 more

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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.

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