Observation of a shadow of the Moon in the underground muon flux in the Soudan 2 detector

Journal Article · Mon May 01 04:00:00 EDT 2000 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.61.092002· OSTI ID:20216157

Cobb, J H ^[1]; Marshak, M L ^[2]; Allison, W W. M. ^[1]; Alner, G J ^[3]; Ayres, D S ^[4]; Barrett, W L ^[5]; Bode, C ^[2]; Border, P M ^[2]; Brooks, C B ^[1]; Cotton, R J ^[3]

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1. Department of Physics, University of Oxford, Oxford OX1 3RH, (United Kingdom)
2. University of Minnesota, Minneapolis, Minnesota 55455 (United States)
3. Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, (United Kingdom)
4. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
5. Western Washington University, Bellingham, Washington 98225 (United States)

A shadow of the Moon, with a statistical significance of 5{sigma}, has been observed in the underground muon flux at a depth of 2090 mwe using the Soudan 2 detector. The angular resolution of the detector is well described by a Gaussian with a sigma {<=}0.3 degree sign . The position of the shadow confirms that the alignment of the detector is known to better than 0.15 degree sign and has remained stable during ten years of data taking. (c) 2000 The American Physical Society.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• OSTI ID: 20216157
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 61; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CALORIMETERS
COSMIC MUONS
COSMIC RAY DETECTION
EXPERIMENTAL DATA
MOON