by
DrNick Mascarenhas(Sandia National Labs, Livermore CA)
→
Pacific/Honolulu
WAT 417 Library (University of Hawai'i, Manoa)
WAT 417 Library
University of Hawai'i, Manoa
2505 Correa Road
Description
Special nuclear material (SNM) emits high energy radiation during active
and passive interrogation. This radiation can be imaged thus allowing
visualization of shielded and/or smuggled SNM. Lower backgrounds and
higher penetration through hi-Z materials make neutrons the preferred
detectable in many scenarios. We have developed a neutron scatter camera
that directly images fast fission neutrons from SNM sources while
simultaneously measuring energy spectra. We have made many significant
advances in the design and implementation of such instruments leading
to an over 30 fold improvement in sensitivity. We will present results
from our detector including analysis techniques that we have developed
for neutron imaging, particle discrimination techniques. We will discuss
camera calibration and performance under realistic threat detection
scenarios, and future prospects in this field.
Organizer: J.G. Learned