An apparatus for studying spallation neutrons in the Aberdeen Tunnel laboratory

In this paper, we describe the design, construction and performance of an apparatus installed in the Aberdeen Tunnel laboratory in Hong Kong for studying spallation neutrons induced by cosmic-ray muons under a vertical rock overburden of 611 meter water equivalent (m.w.e.). The apparatus comprises o...

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Veröffentlicht in:	arXiv.org 2013-08
Hauptverfasser:	Blyth, S C, Chan, Y L, Chen, X C, Chu, M C, Hahn, R L, Ho, T H, Hsiung, Y B, Hu, B Z, Kwan, K K, Kwok, M W, Kwok, T, Lau, Y P, Lee, K P, Leung, J K C, Leung, K Y, Lin, G L, Lin, Y C, Luk, K B, Luk, W H, Ngai, H Y, Ngan, S Y, Pun, C S J, Shih, K, Tam, Y H, Tsang, R H M, Wang, C H, Wong, C M, Wong, H L, Wong, H H C, Wong, K K, Yeh, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Cosmic rays Gadolinium Hodoscopes Laboratories Muons Neutron counters Neutrons Overburden Physics - High Energy Physics - Experiment Physics - Instrumentation and Detectors Scintillation counters Spallation Weight
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Beschreibung
Zusammenfassung:	In this paper, we describe the design, construction and performance of an apparatus installed in the Aberdeen Tunnel laboratory in Hong Kong for studying spallation neutrons induced by cosmic-ray muons under a vertical rock overburden of 611 meter water equivalent (m.w.e.). The apparatus comprises of six horizontal layers of plastic-scintillator hodoscopes for determining the direction and position of the incident cosmic-ray muons. Sandwiched between the hodoscope planes is a neutron detector filled with 650 kg of liquid scintillator doped with about 0.06% of Gadolinium by weight for improving the efficiency of detecting the spallation neutrons. Performance of the apparatus is also presented.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1308.2924