Speaker
Mr
Talent Kwok
(The University of Hong Kong)
Description
The Aberdeen Tunnel Laboratory in Hong Kong is about 50 km southwest of the Daya Bay Experimental site. It has a vertical overburden of 668 m.w.e. in the middle of the Hong Kong Island. In the laboratory, a muon tracker and a neutron detector have been built to measure the flux and angular distribution of the underground cosmic-ray muons, and spallation neutrons produced by these muons.
The muon tracker consists of 150 plastic scintillator hodoscopes and proportional tubes, arranged in staggered order on six layers. Fours layers cover the neutron detector from above. Two layers are put under the neutron detector. The firing pattern of these detectors can be reconstructed to yield the angular information and position of the cosmic-ray muons that reach the neutron detector.
The coincidence of the muon tracker detectors is used to trigger the neutron detector, which contains 760 liters of LAB-based liquid scintillator doped with 0.1% gadolinium to enhance neutron capture. Delayed coincidence of scintillations due to a muon and its spallation neutrons will identify the muonic events from background.
The status of the Aberdeen Tunnel Experiment will be presented.
Primary author
Mr
Talent Kwok
(The University of Hong Kong)
Co-authors
B.J. Zhang
(The Chinese University of Hong Kong)
B.Z. Hu
(National Chiao-Tung University)
C.H. Wang
(National United University)
C.J. Chen
(National Chiao-Tung University)
C.M. Wong
(The Chinese University of Hong Kong)
G.L. Lin
(National Chiao-Tung University)
H. Liu
(The University of Hong Kong)
H.Y. Ngai
(The University of Hong Kong)
J.C.S. Pun
(The University of Hong Kong)
J.K.C. Leung
(The University of Hong Kong)
K.B. Luk
(University of California at Berkeley)
K.K. Kwan
(The Chinese University of Hong Kong)
K.K. Wong
(The Chinese University of Hong Kong)
K.P. Tong
(The University of Hong Kong)
M. Yeh
(Brookhaven National Laboratory)
M.C. Chu
(The Chinese University of Hong Kong)
M.W. Kwok
(The Chinese University of Hong Kong)
R.L. Hahn
(Brookhaven National Laboratory)
S.C. Blyth
(National Taiwan University)
S.Y. Ngan
(The Chinese University of Hong Kong)
W.H. Luk
(The Chinese University of Hong Kong)
W.Y. Lai
(The University of Hong Kong)
X.C. Chen
(The Chinese University of Hong Kong)
Y. Hsiung
(National Taiwan University)
Y.C. Lin
(The University of Hong Kong)
