Blyth, SC

Chan, YL

Chen, XC

Chu, MC

Cui, K

Hahn, RL

Ho, TH

Hsiung, YB

Hu, BZ

Kwan, KK

Kwok, MW

Kwok, T

Lau, YP

Leung, JKC

Leung, KY

Lin, GL

Lin, YC

Luk, KB

Luk, WH

Ngai, HY

Ngan, SY

Pun, JCS

Shih, K

Tam, YH

Tsang, RHM

Wang, CH

Wong, CM

Wong, HLH

Wong, KK

Yeh, M

Zhang, BJ

Physical Review D

HKU Scholars Hub

Measurement of cosmic-ray muons and muon-induced neutrons in the Aberdeen Tunnel Underground Laboratory

We have measured the muon flux and production rate of muon-induced neutrons at a depth of 611 m water equivalent. Our apparatus comprises three layers of crossed plastic scintillator hodoscopes for tracking the incident cosmic-ray muons and 760 L of a gadolinium-doped liquid scintillator for producing and detecting neutrons. The vertical muon intensity was measured to be Iμ=(5.7±0.6)×10-6 cm-2 s-1 sr-1. The yield of muon-induced neutrons in the liquid scintillator was determined to be Yn=(1.19±0.08(stat)±0.21(syst))×10-4 neutrons/(μ·g·cm-2). A fit to the recently measured neutron yields at different depths gave a mean muon energy dependence of 0.76±0.03 for liquid-scintillator targets

Measurement of cosmic-ray muons and muon-induced neutrons in the Aberdeen Tunnel Underground Laboratory

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