Conveners
Session 9: Cosmogenics
- Richard Schnee (South Dakota School of Mines & Technology)
Anton Empl
(University of Houston)
20/03/2015, 10:20
Invited
Presentation
The next generation of experiments searching for rare-physics events with increased sensitivity will require precise predictions of cosmogenic backgrounds. Recent high quality deep underground measurements for cosmogenic neutrons in large liquid scintillator targets were used to study the FLUKA simulation package for this purpose. The results and conclusions drawn from a detailed benchmark...
Dr
Yasuhiro Nakajima
(LBNL)
20/03/2015, 10:40
Invited
Presentation
In the Fall of 2012, we conducted a beam test at CERN to study the feasibility of using the M2 beam line to systematically study the production properties of muon-induced fast neutrons. The M2 beam line is capable of delivering high intensity muon beam with momentum up to 280 GeV/c. Our experimental setup consists of a lead target and a neutron detector surrounded by veto counters placed at...
Mr
Yu Chen
(Syracuse University)
20/03/2015, 11:00
Contributed
Presentation
Muon-induced neutrons are a problematic background for underground experiments searching for rare-event interactions such as WIMP dark-matter scatters, neutrino interactions with matter, neutrinoless double-beta decay, and proton decay. Current knowledge of both the rate and energy spectrum of such cosmogenic neutrons is limited. The Neutron Multiplicity Meter (NMM) is a water Cherenkov...
Kimberly Palladino
(SLAC)
20/03/2015, 11:20
Contributed
Presentation
Low background experiments must contend with the intrinsic radioactivity of their detector and surrounding materials, including radiogenic neutrons which may be generated by spontaneous fission and alpha-n reactions. To calculate the expected neutron yield and spectra from alpha-n reactions due to the thorium and uranium decay chains, cross-section databases and nuclear model code systems must...
Mr
Caleb Roecker
(University California Berkeley)
20/03/2015, 11:40
Contributed
Presentation
Fast neutrons can be created by muogenic processes and produce a depth dependent background for rare-event neutral particle detectors. Muogenic fast neutrons can have energies extending past several hundred MeV. Muons that do not pass through but near the active shielding of these detectors are particularly problematic since they may produce high energy neutrons capable of penetrating the...
