1. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 1 Proton Interrogation Proposal 20081923 Steven Greene, P-25 2/5/2008

2. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 2 Proposal 20081923: Short Range Proton Interrogation Co-Investigators Chris Morris, P-25 (Principal Investigator) Steve Greene, P-25 Fesseha Mariam, P-25 David Clark, P-22 Mark Makela, P-25 Greg Canavan, P-DO Randy Spaulding, ISU Lori Waters, D-5 Jay Elson, D-5

3. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 3 Delayed neutron measurement Materials spanning the periodic chart - 12 C to 238 U Simple targets 10s or 100s of gram samples Simple counters 3 He gas mixture proportional counter LaBr

4. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 4 Proton interrogation of materials pRad facility is well suited. Pulse on demand Current monitor Beam profile from cameras Beta-delayed emissions diagnostic for uranium

5. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 5 Delayed neutron cross sections vs. A  Delayed neutrons from Pb, Hg, Au appear to arise from fission.  18 O has the highest delayed neutron production of all targets measured.  Typical background materials like iron and Aluminum have cross sections ~1/100 th of Uranium

6. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 6 Compound targets Preliminary investigation of shielding effects ‘Environmental’ clutter Intentional shielding

7. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 7 Relative neutron yields from compound targets

8. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 8 Present Proposal Detector development Multi-layered array Neutron energy binning Gamma signal Additional targets Simple, A = 100-150 Compound

9. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 9 Detector Development 3 He mixture proportional tubes CH 2 moderator Layered for energy binning

10. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 10 Targeting A = 100 - 150 Pd, Ag, Sn, I, Cs, La, Sm, Gd Compound Targets Materials in front of targets Materials around targets Materials behind targets

11. Operated by Los Alamos National Security, LLC for NNSA U N C L A S S I F I E D Slide 11 Time Request 30 - 50 targets and scenarios Average of ~1 target per hour, including setup & overhead Repeat some measurements at multiple detector distances Time is ~ 60 hours ‘Cycle B’ Fridays work