Initial data from the Soudan 2 experiment

Conference · Tue May 01 04:00:00 EDT 1990

OSTI ID:6784458

Allison, W W.M.; Barr, G D; Brooks, C B; Cobb, J H; Giles, R H; Perkins, D H; Shield, P D; Thomson, M A; Tupper, L M; West, N ^[1]; Alner, G J; Cockerill, D J.A.; Edwards, V W; Garcia-Garcia, C; Litchfield, P J; Pearce, G F ^[2]; Ambats, I; Ayres, D S; Balka, L J; Barrett, W L ; Dawson, J W; Fields, T H; Goodman, M C; Hill, N

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1. Oxford Univ. (UK). Nuclear Physics Lab.
2. Rutherford Appleton Lab., Chilton (UK)

Soudan 2 is an 1100-ton tracking calorimeter which is being constructed to search for nucleon decay. The detector consists of finely segmented iron instrumented with drift tubes, and records three spatial coordinates and dE/dx for every gas crossing. Excellent event-reconstruction capability, particle identification, and muon sign and direction determination give superior rejection of the neutrino background to nucleon decay in many modes. Predicted detector performance has been verified using cosmic rays tracks and a charged particle test beam calibration. The first 516 tons of Soudan 2 are now in steady operation, with completion planned for 1992. Initial data on neutrino interactions in the first 0.23 fiducial-kiloton-year exposure are described here, as are preliminary results of a search for GUT magnetic monopoles. Plans for studies with single and multiple cosmic-ray muon events, and with contained atmospheric neutrino interactions, are also presented. 7 refs., 6 figs.

• Research Organization: Argonne National Lab., IL (USA). High Energy Physics Div.
• Sponsoring Organization: DOE/ER; MNU; STOFMN; UKSERC
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6784458
• Report Number(s): ANL-HEP-CP-90-49; CONF-900822--10; ON: DE90017833
• Country of Publication: United States
• Language: English

Related Subjects

440104 -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
COSMIC MUONS
COSMIC RADIATION
DECAY
DESIGN
ELEMENTARY PARTICLES
FERMIONS
HADRONS
IONIZING RADIATIONS
LEPTONS
MAGNETIC MONOPOLES
MEASURING INSTRUMENTS
MONOPOLES
MUONS
NEUTRINO OSCILLATION
NUCLEONS
PARTICLE DECAY
PARTICLE IDENTIFICATION
PERFORMANCE
POSTULATED PARTICLES
RADIATION DETECTORS
RADIATIONS
SHOWER COUNTERS