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Title: Measurements of cosmic-ray correlated events at the Soudan underground laboratory

The ceiling and walls of the Low Background Facility at the Soudan Underground Laboratory are lined proportional tubes which form a 30 m × 17 m ×12 m muon tracker. The data acquisition records GPS-generated time stamps along with position information. The tracker is a refurbished version of the Soudan 2 proton-decay muon veto shield. It can now be used in conjunction with other experiments housed within its walls. Particularly interesting is the possible measurement of cavern muons coincident with high-energy neutron detections in the Neutron Multiplicity Meter (NMM), a 4-tonne gadolinium-loaded water Cherenkov neutron capture detector atop a 20-kilotonne lead target. Here we cover the ability of the shield and co-located detectors to achieve coincident timing resolutions of about 1 microsecond via GPS-synchronized absolute timing electronics. The usage of such technology for constraining muon-neutron correlations underground is discussed.
Authors:
;  [1] ;  [2]
  1. School of Physics and Astronomy, University of Minnesota, Minneapolis MN 55455 (United States)
  2. Department of Physics, Syracuse University, Syracuse NY 13244 (United States)
Publication Date:
OSTI Identifier:
22218176
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1549; Journal Issue: 1; Conference: LRT 2013: 4. international workshop on low radioactivity techniques, Assergi (Italy), 10-12 Apr 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CAPTURE; CHERENKOV COUNTERS; CORRELATIONS; COSMIC MUONS; DATA ACQUISITION; GADOLINIUM; GAS TRACK DETECTORS; MULTIPLICITY; NEUTRON DETECTION; NEUTRON REACTIONS; POSITION SENSITIVE DETECTORS; PROPORTIONAL COUNTERS; PROTONS; RESOLUTION; UNDERGROUND