Nuclear Data Research at LANSCE with Possible Relevance to IFMIF Robert C. Haight

1. LA-UR-07-7210 Nuclear Data Research at LANSCE with Possible Relevance to IFMIF Robert C. Haight Los Alamos National Laboratory IAEA Meeting on Nuclear Data for Advanced Systems – Fusion October 31 – November 2, 2007

2. IFMIF has many needs for nuclear data • IFMIF neutrons • Activation to 50 MeV • Gas production to 50 MeV – e.g. no Molybdenum • Neutron transport in sample environment • Displacements -- e.g. file MT=444 • IFMIF deuterons (and protons??) • Probably lots of data needs: e.g. D+Cu, etc. • Source reaction – • It is what it is; do we need to know it better • Imaging of source for beam steering and focusing

3. Nuclear data measurements at LANSCE are made with several instruments DANCE (n,g) FIGARO (n,xn+g) GEANIE (n,xg) N,Z (n,charged particle) Fission LSDS Double Frisch-grid fission chamber; also standard fission ion chamber; new detector station for fission and (n,alpha)

4. Isotope Production Facility (construction) H+ Source Drift Tube Linear Accelerator H- Source Line D 9 10 11A/B ER-1 7 12 8 6 13 Target 1 14 15 4 3 16 1 2 ER-2 5 Nuclear data experiments at LANSCE use neutrons at the Lujan Center, Target 2 and Target 4. Proton Radiography Line B NRAD, Ultra-Cold Neutrons Area A (inactive) Side-Coupled Linear Accelerator Proton Lujan Center LSDS PSR Target 2 GEANIE 120L 90R DANCE 60R Target 4 FIGARO 90L 30R 15R Fission; (n,alpha) 30L 15L N,Z

5. GEANIE (n,xg)

6. New GEANIE data significantly improve the 193Ir(n,n’)193mIr cross section database GEANIE LLNL/LANL

7. N,Z double-differential cross sections are studied with “standard” detector telescopes

8. We measure hydrogen and helium production cross sections for the Advanced Fuel Cycle Initiative Contact: Bob Haight These data differentiate among evaluations

9. Helium production data is being measured for several materials for neutron energies up to 100 MeV

10. ENDF/B-VII has problems for helium production by neutrons on iron in the 7-13 MeV range

11. Hydrogen production also is being measured

12. FIGARO – Fast neutron-Induced GAmma-Ray Observer FIGARO (n,xn+g) n X 20 liquid scintillator neutron detectors 2 gamma-ray detectors

13. Gamma-ray detectors near the sample trigger the event for study of neutron emission – needed for neutron transport 58,60Ni(n,n’) FIGARO (n,xn+g) • 20 Neutron detectors • En from time of flight ~ 1m • “Double time-of-flight“ experiment • Neutron emission in coincidence with gamma rays n x sample 22 m from WNR source Neutron emission contingent on one specific g-transition

14. Recapitulate: IFMIF has many needs for nuclear data • IFMIF neutrons • Activation to 50 MeV – GEANIE relevance • Gas production to 50 MeV – (n,z) – ENDF file incomplete • Neutron transport in sample environment - FIGARO • Displacements -- e.g. file MT=444 • IFMIF deuterons (and protons??) • Probably lots of data needs: e.g. D+Cu, etc. • Source reaction – • It is what it is; do we need to know it better • Imaging of source for beam steering and focusing