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Cosmic Ray Shielding at NOvA

Document #:
Document type:
technical note
Submitted by:
Alec T Habig
Updated by:
Travis Olson
Document Created:
18 Oct 2011, 14:27
Contents Revised:
18 Oct 2011, 14:27
Metadata Revised:
03 May 2017, 14:00
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We used a muon telescope to calculate the cosmic ray background at the NOvA site and determine how effective the barite and other rock around the detector were at shielding. The cosmic ray flux was found to be 0.0053±7.1x10-5 muons cm-2sr-1s-1 under the barite which is 29±1.4% less than the flux outside. The rate of electromagnetic showers is 0.0028 ± .0006 showers per second which is 77 ± 5.3% less than the rate outside.
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Notes and Changes:
Krissie is now a docdb author, update this.
Associated with Events:
held from 14 Oct 2011 to 16 Oct 2011 in University of Minnesota, Twin Cities
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