Multi-depth Measurement of Fast Neutrons
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
A spallation based multiplicity detector has been constructed and deployed to the Kimballton Underground Research Facility to measure the cosmogenic fast neutron flux anti-coincident from the initiating muon. Two of the three planned measurements have been completed (~380 and ~600 m.w.e) with sufficient statistics. The third measurement at level 14 (~4450 m.w.e.) is currently being performed. Current results at ~600 m.w.e. compare favourably to the one previous measurement at 550 m.w.e. For neutron energies between 100 and 200 MeV measurements at ~380 m.w.e. produce fluxes between 1e-8 and 7e-9 n/cm2/s/MeV and at ~600 m.w.e. measurements produce fluxes between 7e-9 and 1e-11 n/cm2/s/MeV.
- Research Organization:
- Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1494633
- Report Number(s):
- SAND--2014-18219; 672376
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cosmogenic Backgrounds in Borexino at 3800 m water-equivalent depth
THE DETECTION OF FAST NEUTRONS BY MEANS OF LIQUID-HEXANE-FILLED IONIZATION CHAMBERS